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From 5c328efd4f012365c9a08f7f2b23e293f639c43f Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 2 May 2013 14:59:01 +0200
Subject: [PATCH 147/164] mmc: MIPS: ralink: add sdhci for mt7620a SoC
Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/mmc/host/Kconfig | 11 +
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/mt6575_sd.h | 1068 ++++++++++++++++++
drivers/mmc/host/sdhci-mt7620.c | 2314 +++++++++++++++++++++++++++++++++++++++
4 files changed, 3394 insertions(+)
create mode 100644 drivers/mmc/host/mt6575_sd.h
create mode 100644 drivers/mmc/host/sdhci-mt7620.c
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -249,6 +249,17 @@ config MMC_SDHCI_BCM2835
If unsure, say N.
+config MMC_SDHCI_MT7620
+ tristate "SDHCI platform support for the MT7620 SD/MMC Controller"
+ depends on SOC_MT7620
+ depends on MMC_SDHCI_PLTFM
+ select MMC_SDHCI_IO_ACCESSORS
+ help
+ This selects the BCM2835 SD/MMC controller. If you have a BCM2835
+ platform with SD or MMC devices, say Y or M here.
+
+ If unsure, say N.
+
config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-
obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o
obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o
obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o
+obj-$(CONFIG_MMC_SDHCI_MT7620) += sdhci-mt7620.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
--- /dev/null
+++ b/drivers/mmc/host/mt6575_sd.h
@@ -0,0 +1,1068 @@
+/* Copyright Statement:
+ *
+ * This software/firmware and related documentation ("MediaTek Software") are
+ * protected under relevant copyright laws. The information contained herein
+ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
+ * Without the prior written permission of MediaTek inc. and/or its licensors,
+ * any reproduction, modification, use or disclosure of MediaTek Software,
+ * and information contained herein, in whole or in part, shall be strictly prohibited.
+ */
+/* MediaTek Inc. (C) 2010. All rights reserved.
+ *
+ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
+ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
+ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
+ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
+ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
+ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
+ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
+ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
+ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
+ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
+ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
+ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
+ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
+ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
+ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
+ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
+ *
+ * The following software/firmware and/or related documentation ("MediaTek Software")
+ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
+ * applicable license agreements with MediaTek Inc.
+ */
+
+#ifndef MT6575_SD_H
+#define MT6575_SD_H
+
+#include <linux/bitops.h>
+#include <linux/mmc/host.h>
+
+// #include <mach/mt6575_reg_base.h> /* --- by chhung */
+
+typedef void (*sdio_irq_handler_t)(void*); /* external irq handler */
+typedef void (*pm_callback_t)(pm_message_t state, void *data);
+
+#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */
+#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */
+#define MSDC_RST_PIN_EN (1 << 2) /* emmc reset pin is wired */
+#define MSDC_SDIO_IRQ (1 << 3) /* use internal sdio irq (bus) */
+#define MSDC_EXT_SDIO_IRQ (1 << 4) /* use external sdio irq */
+#define MSDC_REMOVABLE (1 << 5) /* removable slot */
+#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */
+#define MSDC_HIGHSPEED (1 << 7) /* high-speed mode support */
+#define MSDC_UHS1 (1 << 8) /* uhs-1 mode support */
+#define MSDC_DDR (1 << 9) /* ddr mode support */
+#define MSDC_SPE (1 << 10) /* special support */
+#define MSDC_INTERNAL_CLK (1 << 11) /* Force Internal clock */
+#define MSDC_TABDRV (1 << 12) /* TABLET */
+
+
+#define MSDC_SMPL_RISING (0)
+#define MSDC_SMPL_FALLING (1)
+
+#define MSDC_CMD_PIN (0)
+#define MSDC_DAT_PIN (1)
+#define MSDC_CD_PIN (2)
+#define MSDC_WP_PIN (3)
+#define MSDC_RST_PIN (4)
+
+enum {
+ MSDC_CLKSRC_26MHZ = 0,
+ MSDC_CLKSRC_197MHZ = 1,
+ MSDC_CLKSRC_208MHZ = 2
+};
+
+struct msdc_hw {
+ unsigned char clk_src; /* host clock source */
+ unsigned char cmd_edge; /* command latch edge */
+ unsigned char data_edge; /* data latch edge */
+ unsigned char clk_drv; /* clock pad driving */
+ unsigned char cmd_drv; /* command pad driving */
+ unsigned char dat_drv; /* data pad driving */
+ unsigned long flags; /* hardware capability flags */
+ unsigned long data_pins; /* data pins */
+ unsigned long data_offset; /* data address offset */
+
+ /* config gpio pull mode */
+ void (*config_gpio_pin)(int type, int pull);
+
+ /* external power control for card */
+ void (*ext_power_on)(void);
+ void (*ext_power_off)(void);
+
+ /* external sdio irq operations */
+ void (*request_sdio_eirq)(sdio_irq_handler_t sdio_irq_handler, void *data);
+ void (*enable_sdio_eirq)(void);
+ void (*disable_sdio_eirq)(void);
+
+ /* external cd irq operations */
+ void (*request_cd_eirq)(sdio_irq_handler_t cd_irq_handler, void *data);
+ void (*enable_cd_eirq)(void);
+ void (*disable_cd_eirq)(void);
+ int (*get_cd_status)(void);
+
+ /* power management callback for external module */
+ void (*register_pm)(pm_callback_t pm_cb, void *data);
+};
+
+extern struct msdc_hw msdc0_hw;
+extern struct msdc_hw msdc1_hw;
+extern struct msdc_hw msdc2_hw;
+extern struct msdc_hw msdc3_hw;
+
+
+/*--------------------------------------------------------------------------*/
+/* Common Macro */
+/*--------------------------------------------------------------------------*/
+#define REG_ADDR(x) ((volatile u32*)(base + OFFSET_##x))
+
+/*--------------------------------------------------------------------------*/
+/* Common Definition */
+/*--------------------------------------------------------------------------*/
+#define MSDC_FIFO_SZ (128)
+#define MSDC_FIFO_THD (64) // (128)
+#define MSDC_NUM (4)
+
+#define MSDC_MS (0)
+#define MSDC_SDMMC (1)
+
+#define MSDC_MODE_UNKNOWN (0)
+#define MSDC_MODE_PIO (1)
+#define MSDC_MODE_DMA_BASIC (2)
+#define MSDC_MODE_DMA_DESC (3)
+#define MSDC_MODE_DMA_ENHANCED (4)
+#define MSDC_MODE_MMC_STREAM (5)
+
+#define MSDC_BUS_1BITS (0)
+#define MSDC_BUS_4BITS (1)
+#define MSDC_BUS_8BITS (2)
+
+#define MSDC_BRUST_8B (3)
+#define MSDC_BRUST_16B (4)
+#define MSDC_BRUST_32B (5)
+#define MSDC_BRUST_64B (6)
+
+#define MSDC_PIN_PULL_NONE (0)
+#define MSDC_PIN_PULL_DOWN (1)
+#define MSDC_PIN_PULL_UP (2)
+#define MSDC_PIN_KEEP (3)
+
+#define MSDC_MAX_SCLK (48000000) /* +/- by chhung */
+#define MSDC_MIN_SCLK (260000)
+
+#define MSDC_AUTOCMD12 (0x0001)
+#define MSDC_AUTOCMD23 (0x0002)
+#define MSDC_AUTOCMD19 (0x0003)
+
+#define MSDC_EMMC_BOOTMODE0 (0) /* Pull low CMD mode */
+#define MSDC_EMMC_BOOTMODE1 (1) /* Reset CMD mode */
+
+enum {
+ RESP_NONE = 0,
+ RESP_R1,
+ RESP_R2,
+ RESP_R3,
+ RESP_R4,
+ RESP_R5,
+ RESP_R6,
+ RESP_R7,
+ RESP_R1B
+};
+
+/*--------------------------------------------------------------------------*/
+/* Register Offset */
+/*--------------------------------------------------------------------------*/
+#define OFFSET_MSDC_CFG (0x0)
+#define OFFSET_MSDC_IOCON (0x04)
+#define OFFSET_MSDC_PS (0x08)
+#define OFFSET_MSDC_INT (0x0c)
+#define OFFSET_MSDC_INTEN (0x10)
+#define OFFSET_MSDC_FIFOCS (0x14)
+#define OFFSET_MSDC_TXDATA (0x18)
+#define OFFSET_MSDC_RXDATA (0x1c)
+#define OFFSET_SDC_CFG (0x30)
+#define OFFSET_SDC_CMD (0x34)
+#define OFFSET_SDC_ARG (0x38)
+#define OFFSET_SDC_STS (0x3c)
+#define OFFSET_SDC_RESP0 (0x40)
+#define OFFSET_SDC_RESP1 (0x44)
+#define OFFSET_SDC_RESP2 (0x48)
+#define OFFSET_SDC_RESP3 (0x4c)
+#define OFFSET_SDC_BLK_NUM (0x50)
+#define OFFSET_SDC_CSTS (0x58)
+#define OFFSET_SDC_CSTS_EN (0x5c)
+#define OFFSET_SDC_DCRC_STS (0x60)
+#define OFFSET_EMMC_CFG0 (0x70)
+#define OFFSET_EMMC_CFG1 (0x74)
+#define OFFSET_EMMC_STS (0x78)
+#define OFFSET_EMMC_IOCON (0x7c)
+#define OFFSET_SDC_ACMD_RESP (0x80)
+#define OFFSET_SDC_ACMD19_TRG (0x84)
+#define OFFSET_SDC_ACMD19_STS (0x88)
+#define OFFSET_MSDC_DMA_SA (0x90)
+#define OFFSET_MSDC_DMA_CA (0x94)
+#define OFFSET_MSDC_DMA_CTRL (0x98)
+#define OFFSET_MSDC_DMA_CFG (0x9c)
+#define OFFSET_MSDC_DBG_SEL (0xa0)
+#define OFFSET_MSDC_DBG_OUT (0xa4)
+#define OFFSET_MSDC_PATCH_BIT (0xb0)
+#define OFFSET_MSDC_PATCH_BIT1 (0xb4)
+#define OFFSET_MSDC_PAD_CTL0 (0xe0)
+#define OFFSET_MSDC_PAD_CTL1 (0xe4)
+#define OFFSET_MSDC_PAD_CTL2 (0xe8)
+#define OFFSET_MSDC_PAD_TUNE (0xec)
+#define OFFSET_MSDC_DAT_RDDLY0 (0xf0)
+#define OFFSET_MSDC_DAT_RDDLY1 (0xf4)
+#define OFFSET_MSDC_HW_DBG (0xf8)
+#define OFFSET_MSDC_VERSION (0x100)
+#define OFFSET_MSDC_ECO_VER (0x104)
+
+/*--------------------------------------------------------------------------*/
+/* Register Address */
+/*--------------------------------------------------------------------------*/
+
+/* common register */
+#define MSDC_CFG REG_ADDR(MSDC_CFG)
+#define MSDC_IOCON REG_ADDR(MSDC_IOCON)
+#define MSDC_PS REG_ADDR(MSDC_PS)
+#define MSDC_INT REG_ADDR(MSDC_INT)
+#define MSDC_INTEN REG_ADDR(MSDC_INTEN)
+#define MSDC_FIFOCS REG_ADDR(MSDC_FIFOCS)
+#define MSDC_TXDATA REG_ADDR(MSDC_TXDATA)
+#define MSDC_RXDATA REG_ADDR(MSDC_RXDATA)
+#define MSDC_PATCH_BIT0 REG_ADDR(MSDC_PATCH_BIT)
+
+/* sdmmc register */
+#define SDC_CFG REG_ADDR(SDC_CFG)
+#define SDC_CMD REG_ADDR(SDC_CMD)
+#define SDC_ARG REG_ADDR(SDC_ARG)
+#define SDC_STS REG_ADDR(SDC_STS)
+#define SDC_RESP0 REG_ADDR(SDC_RESP0)
+#define SDC_RESP1 REG_ADDR(SDC_RESP1)
+#define SDC_RESP2 REG_ADDR(SDC_RESP2)
+#define SDC_RESP3 REG_ADDR(SDC_RESP3)
+#define SDC_BLK_NUM REG_ADDR(SDC_BLK_NUM)
+#define SDC_CSTS REG_ADDR(SDC_CSTS)
+#define SDC_CSTS_EN REG_ADDR(SDC_CSTS_EN)
+#define SDC_DCRC_STS REG_ADDR(SDC_DCRC_STS)
+
+/* emmc register*/
+#define EMMC_CFG0 REG_ADDR(EMMC_CFG0)
+#define EMMC_CFG1 REG_ADDR(EMMC_CFG1)
+#define EMMC_STS REG_ADDR(EMMC_STS)
+#define EMMC_IOCON REG_ADDR(EMMC_IOCON)
+
+/* auto command register */
+#define SDC_ACMD_RESP REG_ADDR(SDC_ACMD_RESP)
+#define SDC_ACMD19_TRG REG_ADDR(SDC_ACMD19_TRG)
+#define SDC_ACMD19_STS REG_ADDR(SDC_ACMD19_STS)
+
+/* dma register */
+#define MSDC_DMA_SA REG_ADDR(MSDC_DMA_SA)
+#define MSDC_DMA_CA REG_ADDR(MSDC_DMA_CA)
+#define MSDC_DMA_CTRL REG_ADDR(MSDC_DMA_CTRL)
+#define MSDC_DMA_CFG REG_ADDR(MSDC_DMA_CFG)
+
+/* pad ctrl register */
+#define MSDC_PAD_CTL0 REG_ADDR(MSDC_PAD_CTL0)
+#define MSDC_PAD_CTL1 REG_ADDR(MSDC_PAD_CTL1)
+#define MSDC_PAD_CTL2 REG_ADDR(MSDC_PAD_CTL2)
+
+/* data read delay */
+#define MSDC_DAT_RDDLY0 REG_ADDR(MSDC_DAT_RDDLY0)
+#define MSDC_DAT_RDDLY1 REG_ADDR(MSDC_DAT_RDDLY1)
+
+/* debug register */
+#define MSDC_DBG_SEL REG_ADDR(MSDC_DBG_SEL)
+#define MSDC_DBG_OUT REG_ADDR(MSDC_DBG_OUT)
+
+/* misc register */
+#define MSDC_PATCH_BIT REG_ADDR(MSDC_PATCH_BIT)
+#define MSDC_PATCH_BIT1 REG_ADDR(MSDC_PATCH_BIT1)
+#define MSDC_PAD_TUNE REG_ADDR(MSDC_PAD_TUNE)
+#define MSDC_HW_DBG REG_ADDR(MSDC_HW_DBG)
+#define MSDC_VERSION REG_ADDR(MSDC_VERSION)
+#define MSDC_ECO_VER REG_ADDR(MSDC_ECO_VER) /* ECO Version */
+
+/*--------------------------------------------------------------------------*/
+/* Register Mask */
+/*--------------------------------------------------------------------------*/
+
+/* MSDC_CFG mask */
+#define MSDC_CFG_MODE (0x1 << 0) /* RW */
+#define MSDC_CFG_CKPDN (0x1 << 1) /* RW */
+#define MSDC_CFG_RST (0x1 << 2) /* RW */
+#define MSDC_CFG_PIO (0x1 << 3) /* RW */
+#define MSDC_CFG_CKDRVEN (0x1 << 4) /* RW */
+#define MSDC_CFG_BV18SDT (0x1 << 5) /* RW */
+#define MSDC_CFG_BV18PSS (0x1 << 6) /* R */
+#define MSDC_CFG_CKSTB (0x1 << 7) /* R */
+#define MSDC_CFG_CKDIV (0xff << 8) /* RW */
+#define MSDC_CFG_CKMOD (0x3 << 16) /* RW */
+
+/* MSDC_IOCON mask */
+#define MSDC_IOCON_SDR104CKS (0x1 << 0) /* RW */
+#define MSDC_IOCON_RSPL (0x1 << 1) /* RW */
+#define MSDC_IOCON_DSPL (0x1 << 2) /* RW */
+#define MSDC_IOCON_DDLSEL (0x1 << 3) /* RW */
+#define MSDC_IOCON_DDR50CKD (0x1 << 4) /* RW */
+#define MSDC_IOCON_DSPLSEL (0x1 << 5) /* RW */
+#define MSDC_IOCON_D0SPL (0x1 << 16) /* RW */
+#define MSDC_IOCON_D1SPL (0x1 << 17) /* RW */
+#define MSDC_IOCON_D2SPL (0x1 << 18) /* RW */
+#define MSDC_IOCON_D3SPL (0x1 << 19) /* RW */
+#define MSDC_IOCON_D4SPL (0x1 << 20) /* RW */
+#define MSDC_IOCON_D5SPL (0x1 << 21) /* RW */
+#define MSDC_IOCON_D6SPL (0x1 << 22) /* RW */
+#define MSDC_IOCON_D7SPL (0x1 << 23) /* RW */
+#define MSDC_IOCON_RISCSZ (0x3 << 24) /* RW */
+
+/* MSDC_PS mask */
+#define MSDC_PS_CDEN (0x1 << 0) /* RW */
+#define MSDC_PS_CDSTS (0x1 << 1) /* R */
+#define MSDC_PS_CDDEBOUNCE (0xf << 12) /* RW */
+#define MSDC_PS_DAT (0xff << 16) /* R */
+#define MSDC_PS_CMD (0x1 << 24) /* R */
+#define MSDC_PS_WP (0x1UL<< 31) /* R */
+
+/* MSDC_INT mask */
+#define MSDC_INT_MMCIRQ (0x1 << 0) /* W1C */
+#define MSDC_INT_CDSC (0x1 << 1) /* W1C */
+#define MSDC_INT_ACMDRDY (0x1 << 3) /* W1C */
+#define MSDC_INT_ACMDTMO (0x1 << 4) /* W1C */
+#define MSDC_INT_ACMDCRCERR (0x1 << 5) /* W1C */
+#define MSDC_INT_DMAQ_EMPTY (0x1 << 6) /* W1C */
+#define MSDC_INT_SDIOIRQ (0x1 << 7) /* W1C */
+#define MSDC_INT_CMDRDY (0x1 << 8) /* W1C */
+#define MSDC_INT_CMDTMO (0x1 << 9) /* W1C */
+#define MSDC_INT_RSPCRCERR (0x1 << 10) /* W1C */
+#define MSDC_INT_CSTA (0x1 << 11) /* R */
+#define MSDC_INT_XFER_COMPL (0x1 << 12) /* W1C */
+#define MSDC_INT_DXFER_DONE (0x1 << 13) /* W1C */
+#define MSDC_INT_DATTMO (0x1 << 14) /* W1C */
+#define MSDC_INT_DATCRCERR (0x1 << 15) /* W1C */
+#define MSDC_INT_ACMD19_DONE (0x1 << 16) /* W1C */
+
+/* MSDC_INTEN mask */
+#define MSDC_INTEN_MMCIRQ (0x1 << 0) /* RW */
+#define MSDC_INTEN_CDSC (0x1 << 1) /* RW */
+#define MSDC_INTEN_ACMDRDY (0x1 << 3) /* RW */
+#define MSDC_INTEN_ACMDTMO (0x1 << 4) /* RW */
+#define MSDC_INTEN_ACMDCRCERR (0x1 << 5) /* RW */
+#define MSDC_INTEN_DMAQ_EMPTY (0x1 << 6) /* RW */
+#define MSDC_INTEN_SDIOIRQ (0x1 << 7) /* RW */
+#define MSDC_INTEN_CMDRDY (0x1 << 8) /* RW */
+#define MSDC_INTEN_CMDTMO (0x1 << 9) /* RW */
+#define MSDC_INTEN_RSPCRCERR (0x1 << 10) /* RW */
+#define MSDC_INTEN_CSTA (0x1 << 11) /* RW */
+#define MSDC_INTEN_XFER_COMPL (0x1 << 12) /* RW */
+#define MSDC_INTEN_DXFER_DONE (0x1 << 13) /* RW */
+#define MSDC_INTEN_DATTMO (0x1 << 14) /* RW */
+#define MSDC_INTEN_DATCRCERR (0x1 << 15) /* RW */
+#define MSDC_INTEN_ACMD19_DONE (0x1 << 16) /* RW */
+
+/* MSDC_FIFOCS mask */
+#define MSDC_FIFOCS_RXCNT (0xff << 0) /* R */
+#define MSDC_FIFOCS_TXCNT (0xff << 16) /* R */
+#define MSDC_FIFOCS_CLR (0x1UL<< 31) /* RW */
+
+/* SDC_CFG mask */
+#define SDC_CFG_SDIOINTWKUP (0x1 << 0) /* RW */
+#define SDC_CFG_INSWKUP (0x1 << 1) /* RW */
+#define SDC_CFG_BUSWIDTH (0x3 << 16) /* RW */
+#define SDC_CFG_SDIO (0x1 << 19) /* RW */
+#define SDC_CFG_SDIOIDE (0x1 << 20) /* RW */
+#define SDC_CFG_INTATGAP (0x1 << 21) /* RW */
+#define SDC_CFG_DTOC (0xffUL << 24) /* RW */
+
+/* SDC_CMD mask */
+#define SDC_CMD_OPC (0x3f << 0) /* RW */
+#define SDC_CMD_BRK (0x1 << 6) /* RW */
+#define SDC_CMD_RSPTYP (0x7 << 7) /* RW */
+#define SDC_CMD_DTYP (0x3 << 11) /* RW */
+#define SDC_CMD_DTYP (0x3 << 11) /* RW */
+#define SDC_CMD_RW (0x1 << 13) /* RW */
+#define SDC_CMD_STOP (0x1 << 14) /* RW */
+#define SDC_CMD_GOIRQ (0x1 << 15) /* RW */
+#define SDC_CMD_BLKLEN (0xfff<< 16) /* RW */
+#define SDC_CMD_AUTOCMD (0x3 << 28) /* RW */
+#define SDC_CMD_VOLSWTH (0x1 << 30) /* RW */
+
+/* SDC_STS mask */
+#define SDC_STS_SDCBUSY (0x1 << 0) /* RW */
+#define SDC_STS_CMDBUSY (0x1 << 1) /* RW */
+#define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */
+
+/* SDC_DCRC_STS mask */
+#define SDC_DCRC_STS_NEG (0xf << 8) /* RO */
+#define SDC_DCRC_STS_POS (0xff << 0) /* RO */
+
+/* EMMC_CFG0 mask */
+#define EMMC_CFG0_BOOTSTART (0x1 << 0) /* W */
+#define EMMC_CFG0_BOOTSTOP (0x1 << 1) /* W */
+#define EMMC_CFG0_BOOTMODE (0x1 << 2) /* RW */
+#define EMMC_CFG0_BOOTACKDIS (0x1 << 3) /* RW */
+#define EMMC_CFG0_BOOTWDLY (0x7 << 12) /* RW */
+#define EMMC_CFG0_BOOTSUPP (0x1 << 15) /* RW */
+
+/* EMMC_CFG1 mask */
+#define EMMC_CFG1_BOOTDATTMC (0xfffff << 0) /* RW */
+#define EMMC_CFG1_BOOTACKTMC (0xfffUL << 20) /* RW */
+
+/* EMMC_STS mask */
+#define EMMC_STS_BOOTCRCERR (0x1 << 0) /* W1C */
+#define EMMC_STS_BOOTACKERR (0x1 << 1) /* W1C */
+#define EMMC_STS_BOOTDATTMO (0x1 << 2) /* W1C */
+#define EMMC_STS_BOOTACKTMO (0x1 << 3) /* W1C */
+#define EMMC_STS_BOOTUPSTATE (0x1 << 4) /* R */
+#define EMMC_STS_BOOTACKRCV (0x1 << 5) /* W1C */
+#define EMMC_STS_BOOTDATRCV (0x1 << 6) /* R */
+
+/* EMMC_IOCON mask */
+#define EMMC_IOCON_BOOTRST (0x1 << 0) /* RW */
+
+/* SDC_ACMD19_TRG mask */
+#define SDC_ACMD19_TRG_TUNESEL (0xf << 0) /* RW */
+
+/* MSDC_DMA_CTRL mask */
+#define MSDC_DMA_CTRL_START (0x1 << 0) /* W */
+#define MSDC_DMA_CTRL_STOP (0x1 << 1) /* W */
+#define MSDC_DMA_CTRL_RESUME (0x1 << 2) /* W */
+#define MSDC_DMA_CTRL_MODE (0x1 << 8) /* RW */
+#define MSDC_DMA_CTRL_LASTBUF (0x1 << 10) /* RW */
+#define MSDC_DMA_CTRL_BRUSTSZ (0x7 << 12) /* RW */
+#define MSDC_DMA_CTRL_XFERSZ (0xffffUL << 16)/* RW */
+
+/* MSDC_DMA_CFG mask */
+#define MSDC_DMA_CFG_STS (0x1 << 0) /* R */
+#define MSDC_DMA_CFG_DECSEN (0x1 << 1) /* RW */
+#define MSDC_DMA_CFG_BDCSERR (0x1 << 4) /* R */
+#define MSDC_DMA_CFG_GPDCSERR (0x1 << 5) /* R */
+
+/* MSDC_PATCH_BIT mask */
+#define MSDC_PATCH_BIT_WFLSMODE (0x1 << 0) /* RW */
+#define MSDC_PATCH_BIT_ODDSUPP (0x1 << 1) /* RW */
+#define MSDC_PATCH_BIT_CKGEN_CK (0x1 << 6) /* E2: Fixed to 1 */
+#define MSDC_PATCH_BIT_IODSSEL (0x1 << 16) /* RW */
+#define MSDC_PATCH_BIT_IOINTSEL (0x1 << 17) /* RW */
+#define MSDC_PATCH_BIT_BUSYDLY (0xf << 18) /* RW */
+#define MSDC_PATCH_BIT_WDOD (0xf << 22) /* RW */
+#define MSDC_PATCH_BIT_IDRTSEL (0x1 << 26) /* RW */
+#define MSDC_PATCH_BIT_CMDFSEL (0x1 << 27) /* RW */
+#define MSDC_PATCH_BIT_INTDLSEL (0x1 << 28) /* RW */
+#define MSDC_PATCH_BIT_SPCPUSH (0x1 << 29) /* RW */
+#define MSDC_PATCH_BIT_DECRCTMO (0x1 << 30) /* RW */
+
+/* MSDC_PATCH_BIT1 mask */
+#define MSDC_PATCH_BIT1_WRDAT_CRCS (0x7 << 3)
+#define MSDC_PATCH_BIT1_CMD_RSP (0x7 << 0)
+
+/* MSDC_PAD_CTL0 mask */
+#define MSDC_PAD_CTL0_CLKDRVN (0x7 << 0) /* RW */
+#define MSDC_PAD_CTL0_CLKDRVP (0x7 << 4) /* RW */
+#define MSDC_PAD_CTL0_CLKSR (0x1 << 8) /* RW */
+#define MSDC_PAD_CTL0_CLKPD (0x1 << 16) /* RW */
+#define MSDC_PAD_CTL0_CLKPU (0x1 << 17) /* RW */
+#define MSDC_PAD_CTL0_CLKSMT (0x1 << 18) /* RW */
+#define MSDC_PAD_CTL0_CLKIES (0x1 << 19) /* RW */
+#define MSDC_PAD_CTL0_CLKTDSEL (0xf << 20) /* RW */
+#define MSDC_PAD_CTL0_CLKRDSEL (0xffUL<< 24) /* RW */
+
+/* MSDC_PAD_CTL1 mask */
+#define MSDC_PAD_CTL1_CMDDRVN (0x7 << 0) /* RW */
+#define MSDC_PAD_CTL1_CMDDRVP (0x7 << 4) /* RW */
+#define MSDC_PAD_CTL1_CMDSR (0x1 << 8) /* RW */
+#define MSDC_PAD_CTL1_CMDPD (0x1 << 16) /* RW */
+#define MSDC_PAD_CTL1_CMDPU (0x1 << 17) /* RW */
+#define MSDC_PAD_CTL1_CMDSMT (0x1 << 18) /* RW */
+#define MSDC_PAD_CTL1_CMDIES (0x1 << 19) /* RW */
+#define MSDC_PAD_CTL1_CMDTDSEL (0xf << 20) /* RW */
+#define MSDC_PAD_CTL1_CMDRDSEL (0xffUL<< 24) /* RW */
+
+/* MSDC_PAD_CTL2 mask */
+#define MSDC_PAD_CTL2_DATDRVN (0x7 << 0) /* RW */
+#define MSDC_PAD_CTL2_DATDRVP (0x7 << 4) /* RW */
+#define MSDC_PAD_CTL2_DATSR (0x1 << 8) /* RW */
+#define MSDC_PAD_CTL2_DATPD (0x1 << 16) /* RW */
+#define MSDC_PAD_CTL2_DATPU (0x1 << 17) /* RW */
+#define MSDC_PAD_CTL2_DATIES (0x1 << 19) /* RW */
+#define MSDC_PAD_CTL2_DATSMT (0x1 << 18) /* RW */
+#define MSDC_PAD_CTL2_DATTDSEL (0xf << 20) /* RW */
+#define MSDC_PAD_CTL2_DATRDSEL (0xffUL<< 24) /* RW */
+
+/* MSDC_PAD_TUNE mask */
+#define MSDC_PAD_TUNE_DATWRDLY (0x1F << 0) /* RW */
+#define MSDC_PAD_TUNE_DATRRDLY (0x1F << 8) /* RW */
+#define MSDC_PAD_TUNE_CMDRDLY (0x1F << 16) /* RW */
+#define MSDC_PAD_TUNE_CMDRRDLY (0x1FUL << 22) /* RW */
+#define MSDC_PAD_TUNE_CLKTXDLY (0x1FUL << 27) /* RW */
+
+/* MSDC_DAT_RDDLY0/1 mask */
+#define MSDC_DAT_RDDLY0_D0 (0x1F << 0) /* RW */
+#define MSDC_DAT_RDDLY0_D1 (0x1F << 8) /* RW */
+#define MSDC_DAT_RDDLY0_D2 (0x1F << 16) /* RW */
+#define MSDC_DAT_RDDLY0_D3 (0x1F << 24) /* RW */
+
+#define MSDC_DAT_RDDLY1_D4 (0x1F << 0) /* RW */
+#define MSDC_DAT_RDDLY1_D5 (0x1F << 8) /* RW */
+#define MSDC_DAT_RDDLY1_D6 (0x1F << 16) /* RW */
+#define MSDC_DAT_RDDLY1_D7 (0x1F << 24) /* RW */
+
+#define MSDC_CKGEN_MSDC_DLY_SEL (0x1F<<10)
+#define MSDC_INT_DAT_LATCH_CK_SEL (0x7<<7)
+#define MSDC_CKGEN_MSDC_CK_SEL (0x1<<6)
+#define CARD_READY_FOR_DATA (1<<8)
+#define CARD_CURRENT_STATE(x) ((x&0x00001E00)>>9)
+
+/*--------------------------------------------------------------------------*/
+/* Descriptor Structure */
+/*--------------------------------------------------------------------------*/
+typedef struct {
+ u32 hwo:1; /* could be changed by hw */
+ u32 bdp:1;
+ u32 rsv0:6;
+ u32 chksum:8;
+ u32 intr:1;
+ u32 rsv1:15;
+ void *next;
+ void *ptr;
+ u32 buflen:16;
+ u32 extlen:8;
+ u32 rsv2:8;
+ u32 arg;
+ u32 blknum;
+ u32 cmd;
+} gpd_t;
+
+typedef struct {
+ u32 eol:1;
+ u32 rsv0:7;
+ u32 chksum:8;
+ u32 rsv1:1;
+ u32 blkpad:1;
+ u32 dwpad:1;
+ u32 rsv2:13;
+ void *next;
+ void *ptr;
+ u32 buflen:16;
+ u32 rsv3:16;
+} bd_t;
+
+/*--------------------------------------------------------------------------*/
+/* Register Debugging Structure */
+/*--------------------------------------------------------------------------*/
+
+typedef struct {
+ u32 msdc:1;
+ u32 ckpwn:1;
+ u32 rst:1;
+ u32 pio:1;
+ u32 ckdrven:1;
+ u32 start18v:1;
+ u32 pass18v:1;
+ u32 ckstb:1;
+ u32 ckdiv:8;
+ u32 ckmod:2;
+ u32 pad:14;
+} msdc_cfg_reg;
+typedef struct {
+ u32 sdr104cksel:1;
+ u32 rsmpl:1;
+ u32 dsmpl:1;
+ u32 ddlysel:1;
+ u32 ddr50ckd:1;
+ u32 dsplsel:1;
+ u32 pad1:10;
+ u32 d0spl:1;
+ u32 d1spl:1;
+ u32 d2spl:1;
+ u32 d3spl:1;
+ u32 d4spl:1;
+ u32 d5spl:1;
+ u32 d6spl:1;
+ u32 d7spl:1;
+ u32 riscsz:1;
+ u32 pad2:7;
+} msdc_iocon_reg;
+typedef struct {
+ u32 cden:1;
+ u32 cdsts:1;
+ u32 pad1:10;
+ u32 cddebounce:4;
+ u32 dat:8;
+ u32 cmd:1;
+ u32 pad2:6;
+ u32 wp:1;
+} msdc_ps_reg;
+typedef struct {
+ u32 mmcirq:1;
+ u32 cdsc:1;
+ u32 pad1:1;
+ u32 atocmdrdy:1;
+ u32 atocmdtmo:1;
+ u32 atocmdcrc:1;
+ u32 dmaqempty:1;
+ u32 sdioirq:1;
+ u32 cmdrdy:1;
+ u32 cmdtmo:1;
+ u32 rspcrc:1;
+ u32 csta:1;
+ u32 xfercomp:1;
+ u32 dxferdone:1;
+ u32 dattmo:1;
+ u32 datcrc:1;
+ u32 atocmd19done:1;
+ u32 pad2:15;
+} msdc_int_reg;
+typedef struct {
+ u32 mmcirq:1;
+ u32 cdsc:1;
+ u32 pad1:1;
+ u32 atocmdrdy:1;
+ u32 atocmdtmo:1;
+ u32 atocmdcrc:1;
+ u32 dmaqempty:1;
+ u32 sdioirq:1;
+ u32 cmdrdy:1;
+ u32 cmdtmo:1;
+ u32 rspcrc:1;
+ u32 csta:1;
+ u32 xfercomp:1;
+ u32 dxferdone:1;
+ u32 dattmo:1;
+ u32 datcrc:1;
+ u32 atocmd19done:1;
+ u32 pad2:15;
+} msdc_inten_reg;
+typedef struct {
+ u32 rxcnt:8;
+ u32 pad1:8;
+ u32 txcnt:8;
+ u32 pad2:7;
+ u32 clr:1;
+} msdc_fifocs_reg;
+typedef struct {
+ u32 val;
+} msdc_txdat_reg;
+typedef struct {
+ u32 val;
+} msdc_rxdat_reg;
+typedef struct {
+ u32 sdiowkup:1;
+ u32 inswkup:1;
+ u32 pad1:14;
+ u32 buswidth:2;
+ u32 pad2:1;
+ u32 sdio:1;
+ u32 sdioide:1;
+ u32 intblkgap:1;
+ u32 pad4:2;
+ u32 dtoc:8;
+} sdc_cfg_reg;
+typedef struct {
+ u32 cmd:6;
+ u32 brk:1;
+ u32 rsptyp:3;
+ u32 pad1:1;
+ u32 dtype:2;
+ u32 rw:1;
+ u32 stop:1;
+ u32 goirq:1;
+ u32 blklen:12;
+ u32 atocmd:2;
+ u32 volswth:1;
+ u32 pad2:1;
+} sdc_cmd_reg;
+typedef struct {
+ u32 arg;
+} sdc_arg_reg;
+typedef struct {
+ u32 sdcbusy:1;
+ u32 cmdbusy:1;
+ u32 pad:29;
+ u32 swrcmpl:1;
+} sdc_sts_reg;
+typedef struct {
+ u32 val;
+} sdc_resp0_reg;
+typedef struct {
+ u32 val;
+} sdc_resp1_reg;
+typedef struct {
+ u32 val;
+} sdc_resp2_reg;
+typedef struct {
+ u32 val;
+} sdc_resp3_reg;
+typedef struct {
+ u32 num;
+} sdc_blknum_reg;
+typedef struct {
+ u32 sts;
+} sdc_csts_reg;
+typedef struct {
+ u32 sts;
+} sdc_cstsen_reg;
+typedef struct {
+ u32 datcrcsts:8;
+ u32 ddrcrcsts:4;
+ u32 pad:20;
+} sdc_datcrcsts_reg;
+typedef struct {
+ u32 bootstart:1;
+ u32 bootstop:1;
+ u32 bootmode:1;
+ u32 pad1:9;
+ u32 bootwaidly:3;
+ u32 bootsupp:1;
+ u32 pad2:16;
+} emmc_cfg0_reg;
+typedef struct {
+ u32 bootcrctmc:16;
+ u32 pad:4;
+ u32 bootacktmc:12;
+} emmc_cfg1_reg;
+typedef struct {
+ u32 bootcrcerr:1;
+ u32 bootackerr:1;
+ u32 bootdattmo:1;
+ u32 bootacktmo:1;
+ u32 bootupstate:1;
+ u32 bootackrcv:1;
+ u32 bootdatrcv:1;
+ u32 pad:25;
+} emmc_sts_reg;
+typedef struct {
+ u32 bootrst:1;
+ u32 pad:31;
+} emmc_iocon_reg;
+typedef struct {
+ u32 val;
+} msdc_acmd_resp_reg;
+typedef struct {
+ u32 tunesel:4;
+ u32 pad:28;
+} msdc_acmd19_trg_reg;
+typedef struct {
+ u32 val;
+} msdc_acmd19_sts_reg;
+typedef struct {
+ u32 addr;
+} msdc_dma_sa_reg;
+typedef struct {
+ u32 addr;
+} msdc_dma_ca_reg;
+typedef struct {
+ u32 start:1;
+ u32 stop:1;
+ u32 resume:1;
+ u32 pad1:5;
+ u32 mode:1;
+ u32 pad2:1;
+ u32 lastbuf:1;
+ u32 pad3:1;
+ u32 brustsz:3;
+ u32 pad4:1;
+ u32 xfersz:16;
+} msdc_dma_ctrl_reg;
+typedef struct {
+ u32 status:1;
+ u32 decsen:1;
+ u32 pad1:2;
+ u32 bdcsen:1;
+ u32 gpdcsen:1;
+ u32 pad2:26;
+} msdc_dma_cfg_reg;
+typedef struct {
+ u32 sel:16;
+ u32 pad2:16;
+} msdc_dbg_sel_reg;
+typedef struct {
+ u32 val;
+} msdc_dbg_out_reg;
+typedef struct {
+ u32 clkdrvn:3;
+ u32 rsv0:1;
+ u32 clkdrvp:3;
+ u32 rsv1:1;
+ u32 clksr:1;
+ u32 rsv2:7;
+ u32 clkpd:1;
+ u32 clkpu:1;
+ u32 clksmt:1;
+ u32 clkies:1;
+ u32 clktdsel:4;
+ u32 clkrdsel:8;
+} msdc_pad_ctl0_reg;
+typedef struct {
+ u32 cmddrvn:3;
+ u32 rsv0:1;
+ u32 cmddrvp:3;
+ u32 rsv1:1;
+ u32 cmdsr:1;
+ u32 rsv2:7;
+ u32 cmdpd:1;
+ u32 cmdpu:1;
+ u32 cmdsmt:1;
+ u32 cmdies:1;
+ u32 cmdtdsel:4;
+ u32 cmdrdsel:8;
+} msdc_pad_ctl1_reg;
+typedef struct {
+ u32 datdrvn:3;
+ u32 rsv0:1;
+ u32 datdrvp:3;
+ u32 rsv1:1;
+ u32 datsr:1;
+ u32 rsv2:7;
+ u32 datpd:1;
+ u32 datpu:1;
+ u32 datsmt:1;
+ u32 daties:1;
+ u32 dattdsel:4;
+ u32 datrdsel:8;
+} msdc_pad_ctl2_reg;
+typedef struct {
+ u32 wrrxdly:3;
+ u32 pad1:5;
+ u32 rdrxdly:8;
+ u32 pad2:16;
+} msdc_pad_tune_reg;
+typedef struct {
+ u32 dat0:5;
+ u32 rsv0:3;
+ u32 dat1:5;
+ u32 rsv1:3;
+ u32 dat2:5;
+ u32 rsv2:3;
+ u32 dat3:5;
+ u32 rsv3:3;
+} msdc_dat_rddly0;
+typedef struct {
+ u32 dat4:5;
+ u32 rsv4:3;
+ u32 dat5:5;
+ u32 rsv5:3;
+ u32 dat6:5;
+ u32 rsv6:3;
+ u32 dat7:5;
+ u32 rsv7:3;
+} msdc_dat_rddly1;
+typedef struct {
+ u32 dbg0sel:8;
+ u32 dbg1sel:6;
+ u32 pad1:2;
+ u32 dbg2sel:6;
+ u32 pad2:2;
+ u32 dbg3sel:6;
+ u32 pad3:2;
+} msdc_hw_dbg_reg;
+typedef struct {
+ u32 val;
+} msdc_version_reg;
+typedef struct {
+ u32 val;
+} msdc_eco_ver_reg;
+
+struct msdc_regs {
+ msdc_cfg_reg msdc_cfg; /* base+0x00h */
+ msdc_iocon_reg msdc_iocon; /* base+0x04h */
+ msdc_ps_reg msdc_ps; /* base+0x08h */
+ msdc_int_reg msdc_int; /* base+0x0ch */
+ msdc_inten_reg msdc_inten; /* base+0x10h */
+ msdc_fifocs_reg msdc_fifocs; /* base+0x14h */
+ msdc_txdat_reg msdc_txdat; /* base+0x18h */
+ msdc_rxdat_reg msdc_rxdat; /* base+0x1ch */
+ u32 rsv1[4];
+ sdc_cfg_reg sdc_cfg; /* base+0x30h */
+ sdc_cmd_reg sdc_cmd; /* base+0x34h */
+ sdc_arg_reg sdc_arg; /* base+0x38h */
+ sdc_sts_reg sdc_sts; /* base+0x3ch */
+ sdc_resp0_reg sdc_resp0; /* base+0x40h */
+ sdc_resp1_reg sdc_resp1; /* base+0x44h */
+ sdc_resp2_reg sdc_resp2; /* base+0x48h */
+ sdc_resp3_reg sdc_resp3; /* base+0x4ch */
+ sdc_blknum_reg sdc_blknum; /* base+0x50h */
+ u32 rsv2[1];
+ sdc_csts_reg sdc_csts; /* base+0x58h */
+ sdc_cstsen_reg sdc_cstsen; /* base+0x5ch */
+ sdc_datcrcsts_reg sdc_dcrcsta; /* base+0x60h */
+ u32 rsv3[3];
+ emmc_cfg0_reg emmc_cfg0; /* base+0x70h */
+ emmc_cfg1_reg emmc_cfg1; /* base+0x74h */
+ emmc_sts_reg emmc_sts; /* base+0x78h */
+ emmc_iocon_reg emmc_iocon; /* base+0x7ch */
+ msdc_acmd_resp_reg acmd_resp; /* base+0x80h */
+ msdc_acmd19_trg_reg acmd19_trg; /* base+0x84h */
+ msdc_acmd19_sts_reg acmd19_sts; /* base+0x88h */
+ u32 rsv4[1];
+ msdc_dma_sa_reg dma_sa; /* base+0x90h */
+ msdc_dma_ca_reg dma_ca; /* base+0x94h */
+ msdc_dma_ctrl_reg dma_ctrl; /* base+0x98h */
+ msdc_dma_cfg_reg dma_cfg; /* base+0x9ch */
+ msdc_dbg_sel_reg dbg_sel; /* base+0xa0h */
+ msdc_dbg_out_reg dbg_out; /* base+0xa4h */
+ u32 rsv5[2];
+ u32 patch0; /* base+0xb0h */
+ u32 patch1; /* base+0xb4h */
+ u32 rsv6[10];
+ msdc_pad_ctl0_reg pad_ctl0; /* base+0xe0h */
+ msdc_pad_ctl1_reg pad_ctl1; /* base+0xe4h */
+ msdc_pad_ctl2_reg pad_ctl2; /* base+0xe8h */
+ msdc_pad_tune_reg pad_tune; /* base+0xech */
+ msdc_dat_rddly0 dat_rddly0; /* base+0xf0h */
+ msdc_dat_rddly1 dat_rddly1; /* base+0xf4h */
+ msdc_hw_dbg_reg hw_dbg; /* base+0xf8h */
+ u32 rsv7[1];
+ msdc_version_reg version; /* base+0x100h */
+ msdc_eco_ver_reg eco_ver; /* base+0x104h */
+};
+
+struct scatterlist_ex {
+ u32 cmd;
+ u32 arg;
+ u32 sglen;
+ struct scatterlist *sg;
+};
+
+#define DMA_FLAG_NONE (0x00000000)
+#define DMA_FLAG_EN_CHKSUM (0x00000001)
+#define DMA_FLAG_PAD_BLOCK (0x00000002)
+#define DMA_FLAG_PAD_DWORD (0x00000004)
+
+struct msdc_dma {
+ u32 flags; /* flags */
+ u32 xfersz; /* xfer size in bytes */
+ u32 sglen; /* size of scatter list */
+ u32 blklen; /* block size */
+ struct scatterlist *sg; /* I/O scatter list */
+ struct scatterlist_ex *esg; /* extended I/O scatter list */
+ u8 mode; /* dma mode */
+ u8 burstsz; /* burst size */
+ u8 intr; /* dma done interrupt */
+ u8 padding; /* padding */
+ u32 cmd; /* enhanced mode command */
+ u32 arg; /* enhanced mode arg */
+ u32 rsp; /* enhanced mode command response */
+ u32 autorsp; /* auto command response */
+
+ gpd_t *gpd; /* pointer to gpd array */
+ bd_t *bd; /* pointer to bd array */
+ dma_addr_t gpd_addr; /* the physical address of gpd array */
+ dma_addr_t bd_addr; /* the physical address of bd array */
+ u32 used_gpd; /* the number of used gpd elements */
+ u32 used_bd; /* the number of used bd elements */
+};
+
+struct msdc_host
+{
+ struct msdc_hw *hw;
+
+ struct mmc_host *mmc; /* mmc structure */
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ struct mmc_request *mrq;
+ int cmd_rsp;
+ int cmd_rsp_done;
+ int cmd_r1b_done;
+
+ int error;
+ spinlock_t lock; /* mutex */
+ struct semaphore sem;
+
+ u32 blksz; /* host block size */
+ u32 base; /* host base address */
+ int id; /* host id */
+ int pwr_ref; /* core power reference count */
+
+ u32 xfer_size; /* total transferred size */
+
+ struct msdc_dma dma; /* dma channel */
+ u32 dma_addr; /* dma transfer address */
+ u32 dma_left_size; /* dma transfer left size */
+ u32 dma_xfer_size; /* dma transfer size in bytes */
+ int dma_xfer; /* dma transfer mode */
+
+ u32 timeout_ns; /* data timeout ns */
+ u32 timeout_clks; /* data timeout clks */
+
+ atomic_t abort; /* abort transfer */
+
+ int irq; /* host interrupt */
+
+ struct tasklet_struct card_tasklet;
+
+ struct completion cmd_done;
+ struct completion xfer_done;
+ struct pm_message pm_state;
+
+ u32 mclk; /* mmc subsystem clock */
+ u32 hclk; /* host clock speed */
+ u32 sclk; /* SD/MS clock speed */
+ u8 core_clkon; /* Host core clock on ? */
+ u8 card_clkon; /* Card clock on ? */
+ u8 core_power; /* core power */
+ u8 power_mode; /* host power mode */
+ u8 card_inserted; /* card inserted ? */
+ u8 suspend; /* host suspended ? */
+ u8 reserved;
+ u8 app_cmd; /* for app command */
+ u32 app_cmd_arg;
+ u64 starttime;
+};
+
+static inline unsigned int uffs(unsigned int x)
+{
+ unsigned int r = 1;
+
+ if (!x)
+ return 0;
+ if (!(x & 0xffff)) {
+ x >>= 16;
+ r += 16;
+ }
+ if (!(x & 0xff)) {
+ x >>= 8;
+ r += 8;
+ }
+ if (!(x & 0xf)) {
+ x >>= 4;
+ r += 4;
+ }
+ if (!(x & 3)) {
+ x >>= 2;
+ r += 2;
+ }
+ if (!(x & 1)) {
+ x >>= 1;
+ r += 1;
+ }
+ return r;
+}
+#define sdr_read8(reg) __raw_readb(reg)
+#define sdr_read16(reg) __raw_readw(reg)
+#define sdr_read32(reg) __raw_readl(reg)
+#define sdr_write8(reg,val) __raw_writeb(val,reg)
+#define sdr_write16(reg,val) __raw_writew(val,reg)
+#define sdr_write32(reg,val) __raw_writel(val,reg)
+
+#define sdr_set_bits(reg,bs) ((*(volatile u32*)(reg)) |= (u32)(bs))
+#define sdr_clr_bits(reg,bs) ((*(volatile u32*)(reg)) &= ~((u32)(bs)))
+
+#define sdr_set_field(reg,field,val) \
+ do { \
+ volatile unsigned int tv = sdr_read32(reg); \
+ tv &= ~(field); \
+ tv |= ((val) << (uffs((unsigned int)field) - 1)); \
+ sdr_write32(reg,tv); \
+ } while(0)
+#define sdr_get_field(reg,field,val) \
+ do { \
+ volatile unsigned int tv = sdr_read32(reg); \
+ val = ((tv & (field)) >> (uffs((unsigned int)field) - 1)); \
+ } while(0)
+
+#endif
+
--- /dev/null
+++ b/drivers/mmc/host/sdhci-mt7620.c
@@ -0,0 +1,2314 @@
+/* Copyright Statement:
+ *
+ * This software/firmware and related documentation ("MediaTek Software") are
+ * protected under relevant copyright laws. The information contained herein
+ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
+ * Without the prior written permission of MediaTek inc. and/or its licensors,
+ * any reproduction, modification, use or disclosure of MediaTek Software,
+ * and information contained herein, in whole or in part, shall be strictly prohibited.
+ *
+ * MediaTek Inc. (C) 2010. All rights reserved.
+ *
+ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
+ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
+ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
+ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
+ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
+ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
+ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
+ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
+ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
+ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
+ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
+ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
+ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
+ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
+ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
+ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
+ *
+ * The following software/firmware and/or related documentation ("MediaTek Software")
+ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
+ * applicable license agreements with MediaTek Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
+#include <linux/mmc/sdio.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/pm.h>
+
+#define MSDC_SMPL_FALLING (1)
+#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */
+#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */
+#define MSDC_REMOVABLE (1 << 5) /* removable slot */
+#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */
+#define MSDC_HIGHSPEED (1 << 7)
+
+#define IRQ_SDC 22
+
+#include <asm/dma.h>
+
+#include "mt6575_sd.h"
+
+#define DRV_NAME "mtk-sd"
+
+#define HOST_MAX_NUM (1) /* +/- by chhung */
+
+#define HOST_MAX_MCLK (48000000) /* +/- by chhung */
+#define HOST_MIN_MCLK (260000)
+
+#define HOST_MAX_BLKSZ (2048)
+
+#define MSDC_OCR_AVAIL (MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33)
+
+#define GPIO_PULL_DOWN (0)
+#define GPIO_PULL_UP (1)
+
+#define DEFAULT_DEBOUNCE (8) /* 8 cycles */
+#define DEFAULT_DTOC (40) /* data timeout counter. 65536x40 sclk. */
+
+#define CMD_TIMEOUT (HZ/10) /* 100ms */
+#define DAT_TIMEOUT (HZ/2 * 5) /* 500ms x5 */
+
+#define MAX_DMA_CNT (64 * 1024 - 512) /* a single transaction for WIFI may be 50K*/
+
+#define MAX_GPD_NUM (1 + 1) /* one null gpd */
+#define MAX_BD_NUM (1024)
+#define MAX_BD_PER_GPD (MAX_BD_NUM)
+
+#define MAX_HW_SGMTS (MAX_BD_NUM)
+#define MAX_PHY_SGMTS (MAX_BD_NUM)
+#define MAX_SGMT_SZ (MAX_DMA_CNT)
+#define MAX_REQ_SZ (MAX_SGMT_SZ * 8)
+
+#ifdef MT6575_SD_DEBUG
+static struct msdc_regs *msdc_reg[HOST_MAX_NUM];
+#endif
+
+//=================================
+#define PERI_MSDC0_PDN (15)
+//#define PERI_MSDC1_PDN (16)
+//#define PERI_MSDC2_PDN (17)
+//#define PERI_MSDC3_PDN (18)
+
+struct msdc_host *msdc_6575_host[] = {NULL,NULL,NULL,NULL};
+
+struct msdc_hw msdc0_hw = {
+ .clk_src = 0,
+ .cmd_edge = MSDC_SMPL_FALLING,
+ .data_edge = MSDC_SMPL_FALLING,
+ .clk_drv = 4,
+ .cmd_drv = 4,
+ .dat_drv = 4,
+ .data_pins = 4,
+ .data_offset = 0,
+ .flags = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED,
+};
+
+static struct resource mtk_sd_resources[] = {
+ [0] = {
+ .start = 0xb0130000,
+ .end = 0xb0133fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_SDC, /*FIXME*/
+ .end = IRQ_SDC, /*FIXME*/
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device mtk_sd_device = {
+ .name = "mtk-sd",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mtk_sd_resources),
+ .resource = mtk_sd_resources,
+};
+/* end of +++ */
+
+static int msdc_rsp[] = {
+ 0, /* RESP_NONE */
+ 1, /* RESP_R1 */
+ 2, /* RESP_R2 */
+ 3, /* RESP_R3 */
+ 4, /* RESP_R4 */
+ 1, /* RESP_R5 */
+ 1, /* RESP_R6 */
+ 1, /* RESP_R7 */
+ 7, /* RESP_R1b */
+};
+
+/* For Inhanced DMA */
+#define msdc_init_gpd_ex(gpd,extlen,cmd,arg,blknum) \
+ do { \
+ ((gpd_t*)gpd)->extlen = extlen; \
+ ((gpd_t*)gpd)->cmd = cmd; \
+ ((gpd_t*)gpd)->arg = arg; \
+ ((gpd_t*)gpd)->blknum = blknum; \
+ }while(0)
+
+#define msdc_init_bd(bd, blkpad, dwpad, dptr, dlen) \
+ do { \
+ BUG_ON(dlen > 0xFFFFUL); \
+ ((bd_t*)bd)->blkpad = blkpad; \
+ ((bd_t*)bd)->dwpad = dwpad; \
+ ((bd_t*)bd)->ptr = (void*)dptr; \
+ ((bd_t*)bd)->buflen = dlen; \
+ }while(0)
+
+#define msdc_txfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_TXCNT) >> 16)
+#define msdc_rxfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_RXCNT) >> 0)
+#define msdc_fifo_write32(v) sdr_write32(MSDC_TXDATA, (v))
+#define msdc_fifo_write8(v) sdr_write8(MSDC_TXDATA, (v))
+#define msdc_fifo_read32() sdr_read32(MSDC_RXDATA)
+#define msdc_fifo_read8() sdr_read8(MSDC_RXDATA)
+
+
+#define msdc_dma_on() sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO)
+#define msdc_dma_off() sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO)
+
+#define msdc_retry(expr,retry,cnt) \
+ do { \
+ int backup = cnt; \
+ while (retry) { \
+ if (!(expr)) break; \
+ if (cnt-- == 0) { \
+ retry--; mdelay(1); cnt = backup; \
+ } \
+ } \
+ WARN_ON(retry == 0); \
+ } while(0)
+
+#if 0 /* +/- chhung */
+#define msdc_reset() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
+ dsb(); \
+ msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
+ } while(0)
+#else
+#define msdc_reset() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
+ msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
+ } while(0)
+#endif /* end of +/- */
+
+#define msdc_clr_int() \
+ do { \
+ volatile u32 val = sdr_read32(MSDC_INT); \
+ sdr_write32(MSDC_INT, val); \
+ } while(0)
+
+#define msdc_clr_fifo() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_FIFOCS, MSDC_FIFOCS_CLR); \
+ msdc_retry(sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_CLR, retry, cnt); \
+ } while(0)
+
+#define msdc_irq_save(val) \
+ do { \
+ val = sdr_read32(MSDC_INTEN); \
+ sdr_clr_bits(MSDC_INTEN, val); \
+ } while(0)
+
+#define msdc_irq_restore(val) \
+ do { \
+ sdr_set_bits(MSDC_INTEN, val); \
+ } while(0)
+
+/* clock source for host: global */
+static u32 hclks[] = {48000000}; /* +/- by chhung */
+
+//============================================
+// the power for msdc host controller: global
+// always keep the VMC on.
+//============================================
+#define msdc_vcore_on(host) \
+ do { \
+ printk("[+]VMC ref. count<%d>\n", ++host->pwr_ref); \
+ (void)hwPowerOn(MT65XX_POWER_LDO_VMC, VOL_3300, "SD"); \
+ } while (0)
+#define msdc_vcore_off(host) \
+ do { \
+ printk("[-]VMC ref. count<%d>\n", --host->pwr_ref); \
+ (void)hwPowerDown(MT65XX_POWER_LDO_VMC, "SD"); \
+ } while (0)
+
+//====================================
+// the vdd output for card: global
+// always keep the VMCH on.
+//====================================
+#define msdc_vdd_on(host) \
+ do { \
+ (void)hwPowerOn(MT65XX_POWER_LDO_VMCH, VOL_3300, "SD"); \
+ } while (0)
+#define msdc_vdd_off(host) \
+ do { \
+ (void)hwPowerDown(MT65XX_POWER_LDO_VMCH, "SD"); \
+ } while (0)
+
+#define sdc_is_busy() (sdr_read32(SDC_STS) & SDC_STS_SDCBUSY)
+#define sdc_is_cmd_busy() (sdr_read32(SDC_STS) & SDC_STS_CMDBUSY)
+
+#define sdc_send_cmd(cmd,arg) \
+ do { \
+ sdr_write32(SDC_ARG, (arg)); \
+ sdr_write32(SDC_CMD, (cmd)); \
+ } while(0)
+
+// can modify to read h/w register.
+//#define is_card_present(h) ((sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1);
+#define is_card_present(h) (((struct msdc_host*)(h))->card_inserted)
+
+/* +++ chhung */
+#ifndef __ASSEMBLY__
+#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff)
+#else
+#define PHYSADDR(a) ((a) & 0x1fffffff)
+#endif
+/* end of +++ */
+static unsigned int msdc_do_command(struct msdc_host *host,
+ struct mmc_command *cmd,
+ int tune,
+ unsigned long timeout);
+
+static int msdc_tune_cmdrsp(struct msdc_host*host,struct mmc_command *cmd);
+
+#ifdef MT6575_SD_DEBUG
+static void msdc_dump_card_status(struct msdc_host *host, u32 status)
+{
+ static char *state[] = {
+ "Idle", /* 0 */
+ "Ready", /* 1 */
+ "Ident", /* 2 */
+ "Stby", /* 3 */
+ "Tran", /* 4 */
+ "Data", /* 5 */
+ "Rcv", /* 6 */
+ "Prg", /* 7 */
+ "Dis", /* 8 */
+ "Reserved", /* 9 */
+ "Reserved", /* 10 */
+ "Reserved", /* 11 */
+ "Reserved", /* 12 */
+ "Reserved", /* 13 */
+ "Reserved", /* 14 */
+ "I/O mode", /* 15 */
+ };
+ if (status & R1_OUT_OF_RANGE)
+ printk("[CARD_STATUS] Out of Range\n");
+ if (status & R1_ADDRESS_ERROR)
+ printk("[CARD_STATUS] Address Error\n");
+ if (status & R1_BLOCK_LEN_ERROR)
+ printk("[CARD_STATUS] Block Len Error\n");
+ if (status & R1_ERASE_SEQ_ERROR)
+ printk("[CARD_STATUS] Erase Seq Error\n");
+ if (status & R1_ERASE_PARAM)
+ printk("[CARD_STATUS] Erase Param\n");
+ if (status & R1_WP_VIOLATION)
+ printk("[CARD_STATUS] WP Violation\n");
+ if (status & R1_CARD_IS_LOCKED)
+ printk("[CARD_STATUS] Card is Locked\n");
+ if (status & R1_LOCK_UNLOCK_FAILED)
+ printk("[CARD_STATUS] Lock/Unlock Failed\n");
+ if (status & R1_COM_CRC_ERROR)
+ printk("[CARD_STATUS] Command CRC Error\n");
+ if (status & R1_ILLEGAL_COMMAND)
+ printk("[CARD_STATUS] Illegal Command\n");
+ if (status & R1_CARD_ECC_FAILED)
+ printk("[CARD_STATUS] Card ECC Failed\n");
+ if (status & R1_CC_ERROR)
+ printk("[CARD_STATUS] CC Error\n");
+ if (status & R1_ERROR)
+ printk("[CARD_STATUS] Error\n");
+ if (status & R1_UNDERRUN)
+ printk("[CARD_STATUS] Underrun\n");
+ if (status & R1_OVERRUN)
+ printk("[CARD_STATUS] Overrun\n");
+ if (status & R1_CID_CSD_OVERWRITE)
+ printk("[CARD_STATUS] CID/CSD Overwrite\n");
+ if (status & R1_WP_ERASE_SKIP)
+ printk("[CARD_STATUS] WP Eraser Skip\n");
+ if (status & R1_CARD_ECC_DISABLED)
+ printk("[CARD_STATUS] Card ECC Disabled\n");
+ if (status & R1_ERASE_RESET)
+ printk("[CARD_STATUS] Erase Reset\n");
+ if (status & R1_READY_FOR_DATA)
+ printk("[CARD_STATUS] Ready for Data\n");
+ if (status & R1_SWITCH_ERROR)
+ printk("[CARD_STATUS] Switch error\n");
+ if (status & R1_APP_CMD)
+ printk("[CARD_STATUS] App Command\n");
+
+ printk("[CARD_STATUS] '%s' State\n", state[R1_CURRENT_STATE(status)]);
+}
+
+static void msdc_dump_ocr_reg(struct msdc_host *host, u32 resp)
+{
+ if (resp & (1 << 7))
+ printk("[OCR] Low Voltage Range\n");
+ if (resp & (1 << 15))
+ printk("[OCR] 2.7-2.8 volt\n");
+ if (resp & (1 << 16))
+ printk("[OCR] 2.8-2.9 volt\n");
+ if (resp & (1 << 17))
+ printk("[OCR] 2.9-3.0 volt\n");
+ if (resp & (1 << 18))
+ printk("[OCR] 3.0-3.1 volt\n");
+ if (resp & (1 << 19))
+ printk("[OCR] 3.1-3.2 volt\n");
+ if (resp & (1 << 20))
+ printk("[OCR] 3.2-3.3 volt\n");
+ if (resp & (1 << 21))
+ printk("[OCR] 3.3-3.4 volt\n");
+ if (resp & (1 << 22))
+ printk("[OCR] 3.4-3.5 volt\n");
+ if (resp & (1 << 23))
+ printk("[OCR] 3.5-3.6 volt\n");
+ if (resp & (1 << 24))
+ printk("[OCR] Switching to 1.8V Accepted (S18A)\n");
+ if (resp & (1 << 30))
+ printk("[OCR] Card Capacity Status (CCS)\n");
+ if (resp & (1 << 31))
+ printk("[OCR] Card Power Up Status (Idle)\n");
+ else
+ printk("[OCR] Card Power Up Status (Busy)\n");
+}
+
+static void msdc_dump_rca_resp(struct msdc_host *host, u32 resp)
+{
+ u32 status = (((resp >> 15) & 0x1) << 23) |
+ (((resp >> 14) & 0x1) << 22) |
+ (((resp >> 13) & 0x1) << 19) |
+ (resp & 0x1fff);
+
+ printk("[RCA] 0x%.4x\n", resp >> 16);
+
+ msdc_dump_card_status(host, status);
+}
+
+static void msdc_dump_io_resp(struct msdc_host *host, u32 resp)
+{
+ u32 flags = (resp >> 8) & 0xFF;
+ char *state[] = {"DIS", "CMD", "TRN", "RFU"};
+
+ if (flags & (1 << 7))
+ printk("[IO] COM_CRC_ERR\n");
+ if (flags & (1 << 6))
+ printk("[IO] Illgal command\n");
+ if (flags & (1 << 3))
+ printk("[IO] Error\n");
+ if (flags & (1 << 2))
+ printk("[IO] RFU\n");
+ if (flags & (1 << 1))
+ printk("[IO] Function number error\n");
+ if (flags & (1 << 0))
+ printk("[IO] Out of range\n");
+
+ printk("[IO] State: %s, Data:0x%x\n", state[(resp >> 12) & 0x3], resp & 0xFF);
+}
+#endif
+
+static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
+{
+ u32 base = host->base;
+ u32 timeout, clk_ns;
+
+ host->timeout_ns = ns;
+ host->timeout_clks = clks;
+
+ clk_ns = 1000000000UL / host->sclk;
+ timeout = ns / clk_ns + clks;
+ timeout = timeout >> 16; /* in 65536 sclk cycle unit */
+ timeout = timeout > 1 ? timeout - 1 : 0;
+ timeout = timeout > 255 ? 255 : timeout;
+
+ sdr_set_field(SDC_CFG, SDC_CFG_DTOC, timeout);
+
+/* printk("Set read data timeout: %dns %dclks -> %d x 65536 cycles\n",
+ ns, clks, timeout + 1);*/
+}
+
+static void msdc_eirq_sdio(void *data)
+{
+ struct msdc_host *host = (struct msdc_host *)data;
+
+// printk("SDIO EINT\n");
+
+ mmc_signal_sdio_irq(host->mmc);
+}
+
+static void msdc_eirq_cd(void *data)
+{
+ struct msdc_host *host = (struct msdc_host *)data;
+
+// printk("CD EINT\n");
+
+ tasklet_hi_schedule(&host->card_tasklet);
+}
+
+static void msdc_tasklet_card(unsigned long arg)
+{
+ struct msdc_host *host = (struct msdc_host *)arg;
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ u32 inserted;
+ u32 status = 0;
+
+ spin_lock(&host->lock);
+
+ if (hw->get_cd_status) {
+ inserted = hw->get_cd_status();
+ } else {
+ status = sdr_read32(MSDC_PS);
+ inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
+ }
+
+ host->card_inserted = inserted;
+
+ if (!host->suspend) {
+ host->mmc->f_max = HOST_MAX_MCLK;
+ mmc_detect_change(host->mmc, msecs_to_jiffies(20));
+ }
+
+// printk("card found<%s>\n", inserted ? "inserted" : "removed");
+
+ spin_unlock(&host->lock);
+}
+
+static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
+{
+ u32 base = host->base;
+ u32 hclk = host->hclk;
+ u32 mode, flags, div, sclk;
+
+ if (!hz) {
+// printk("set mclk to 0!!!\n");
+ msdc_reset();
+ return;
+ }
+
+ msdc_irq_save(flags);
+
+ if (ddr) {
+ mode = 0x2;
+ if (hz >= (hclk >> 2)) {
+ div = 1;
+ sclk = hclk >> 2;
+ } else {
+ div = (hclk + ((hz << 2) - 1)) / (hz << 2);
+ sclk = (hclk >> 2) / div;
+ }
+ } else if (hz >= hclk) {
+ mode = 0x1;
+ div = 0;
+ sclk = hclk;
+ } else {
+ mode = 0x0;
+ if (hz >= (hclk >> 1)) {
+ div = 0;
+ sclk = hclk >> 1;
+ } else {
+ div = (hclk + ((hz << 2) - 1)) / (hz << 2);
+ sclk = (hclk >> 2) / div;
+ }
+ }
+
+ sdr_set_field(MSDC_CFG, MSDC_CFG_CKMOD, mode);
+ sdr_set_field(MSDC_CFG, MSDC_CFG_CKDIV, div);
+
+ while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB));
+
+ host->sclk = sclk;
+ host->mclk = hz;
+ msdc_set_timeout(host, host->timeout_ns, host->timeout_clks);
+
+/* printk("!!! Set<%dKHz> Source<%dKHz> -> sclk<%dKHz>\n",
+ hz / 1000, hclk / 1000, sclk / 1000);
+*/
+ msdc_irq_restore(flags);
+}
+
+static void msdc_abort_data(struct msdc_host *host)
+{
+ u32 base = host->base;
+ struct mmc_command *stop = host->mrq->stop;
+
+// printk("Need to Abort. dma<%d>\n", host->dma_xfer);
+
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+
+ if (stop) {
+// printk("stop when abort CMD<%d>\n", stop->opcode);
+ msdc_do_command(host, stop, 0, CMD_TIMEOUT);
+ }
+}
+
+static unsigned int msdc_command_start(struct msdc_host *host,
+ struct mmc_command *cmd, int tune, unsigned long timeout)
+{
+ u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO |
+ MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO |
+ MSDC_INT_ACMD19_DONE;
+ u32 base = host->base;
+ u32 opcode = cmd->opcode;
+ u32 rawcmd;
+ u32 resp;
+ unsigned long tmo;
+
+ if (opcode == MMC_SEND_OP_COND || opcode == SD_APP_OP_COND)
+ resp = RESP_R3;
+ else if (opcode == MMC_SET_RELATIVE_ADDR || opcode == SD_SEND_RELATIVE_ADDR)
+ resp = (mmc_cmd_type(cmd) == MMC_CMD_BCR) ? RESP_R6 : RESP_R1;
+ else if (opcode == MMC_FAST_IO)
+ resp = RESP_R4;
+ else if (opcode == MMC_GO_IRQ_STATE)
+ resp = RESP_R5;
+ else if (opcode == MMC_SELECT_CARD)
+ resp = (cmd->arg != 0) ? RESP_R1B : RESP_NONE;
+ else if (opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED)
+ resp = RESP_R1;
+ else if (opcode == SD_SEND_IF_COND && (mmc_cmd_type(cmd) == MMC_CMD_BCR))
+ resp = RESP_R1;
+ else {
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_R1:
+ resp = RESP_R1;
+ break;
+ case MMC_RSP_R1B:
+ resp = RESP_R1B;
+ break;
+ case MMC_RSP_R2:
+ resp = RESP_R2;
+ break;
+ case MMC_RSP_R3:
+ resp = RESP_R3;
+ break;
+ case MMC_RSP_NONE:
+ default:
+ resp = RESP_NONE;
+ break;
+ }
+ }
+
+ cmd->error = 0;
+ rawcmd = opcode | msdc_rsp[resp] << 7 | host->blksz << 16;
+
+ if (opcode == MMC_READ_MULTIPLE_BLOCK) {
+ rawcmd |= (2 << 11);
+ } else if (opcode == MMC_READ_SINGLE_BLOCK) {
+ rawcmd |= (1 << 11);
+ } else if (opcode == MMC_WRITE_MULTIPLE_BLOCK) {
+ rawcmd |= ((2 << 11) | (1 << 13));
+ } else if (opcode == MMC_WRITE_BLOCK) {
+ rawcmd |= ((1 << 11) | (1 << 13));
+ } else if (opcode == SD_IO_RW_EXTENDED) {
+ if (cmd->data->flags & MMC_DATA_WRITE)
+ rawcmd |= (1 << 13);
+ if (cmd->data->blocks > 1)
+ rawcmd |= (2 << 11);
+ else
+ rawcmd |= (1 << 11);
+ } else if (opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int)-1) {
+ rawcmd |= (1 << 14);
+ } else if ((opcode == SD_APP_SEND_SCR) ||
+ (opcode == SD_APP_SEND_NUM_WR_BLKS) ||
+ (opcode == SD_SWITCH && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
+ (opcode == SD_APP_SD_STATUS && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
+ (opcode == MMC_SEND_EXT_CSD && (mmc_cmd_type(cmd) == MMC_CMD_ADTC))) {
+ rawcmd |= (1 << 11);
+ } else if (opcode == MMC_STOP_TRANSMISSION) {
+ rawcmd |= (1 << 14);
+ rawcmd &= ~(0x0FFF << 16);
+ }
+
+// printk("CMD<%d><0x%.8x> Arg<0x%.8x>\n", opcode , rawcmd, cmd->arg);
+
+ tmo = jiffies + timeout;
+
+ if (opcode == MMC_SEND_STATUS) {
+ for (;;) {
+ if (!sdc_is_cmd_busy())
+ break;
+
+ if (time_after(jiffies, tmo)) {
+ //printk("XXX cmd_busy timeout: before CMD<%d>\n", opcode);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ goto end;
+ }
+ }
+ } else {
+ for (;;) {
+ if (!sdc_is_busy())
+ break;
+ if (time_after(jiffies, tmo)) {
+ //printk("XXX sdc_busy timeout: before CMD<%d>\n", opcode);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ goto end;
+ }
+ }
+ }
+
+ //BUG_ON(in_interrupt());
+ host->cmd = cmd;
+ host->cmd_rsp = resp;
+ init_completion(&host->cmd_done);
+ sdr_set_bits(MSDC_INTEN, wints);
+ sdc_send_cmd(rawcmd, cmd->arg);
+
+end:
+ return cmd->error;
+}
+
+static unsigned int msdc_command_resp(struct msdc_host *host, struct mmc_command *cmd,
+ int tune, unsigned long timeout)
+{
+ u32 base = host->base;
+ //u32 opcode = cmd->opcode;
+ u32 resp;
+ u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO |
+ MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO |
+ MSDC_INT_ACMD19_DONE;
+
+ resp = host->cmd_rsp;
+
+ BUG_ON(in_interrupt());
+ spin_unlock(&host->lock);
+ if (!wait_for_completion_timeout(&host->cmd_done, 10*timeout)) {
+ //printk("XXX CMD<%d> wait_for_completion timeout ARG<0x%.8x>\n", opcode, cmd->arg);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ }
+ spin_lock(&host->lock);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+ host->cmd = NULL;
+
+ if (!tune)
+ return cmd->error;
+
+ /* memory card CRC */
+ if (host->hw->flags & MSDC_REMOVABLE && cmd->error == (unsigned int)(-EIO) ) {
+ if (sdr_read32(SDC_CMD) & 0x1800) {
+ msdc_abort_data(host);
+ } else {
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ cmd->error = msdc_tune_cmdrsp(host,cmd);
+ }
+
+ return cmd->error;
+}
+
+static unsigned int msdc_do_command(struct msdc_host *host, struct mmc_command *cmd,
+ int tune, unsigned long timeout)
+{
+ if (!msdc_command_start(host, cmd, tune, timeout))
+ msdc_command_resp(host, cmd, tune, timeout);
+
+ //printk(" return<%d> resp<0x%.8x>\n", cmd->error, cmd->resp[0]);
+ return cmd->error;
+}
+
+static int msdc_pio_abort(struct msdc_host *host, struct mmc_data *data, unsigned long tmo)
+{
+ u32 base = host->base;
+ int ret = 0;
+
+ if (atomic_read(&host->abort))
+ ret = 1;
+
+ if (time_after(jiffies, tmo)) {
+ data->error = (unsigned int)-ETIMEDOUT;
+ //printk("XXX PIO Data Timeout: CMD<%d>\n", host->mrq->cmd->opcode);
+ ret = 1;
+ }
+
+ if (ret) {
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ //printk("msdc pio find abort\n");
+ }
+
+ return ret;
+}
+
+static int msdc_pio_read(struct msdc_host *host, struct mmc_data *data)
+{
+ struct scatterlist *sg = data->sg;
+ u32 base = host->base;
+ u32 num = data->sg_len;
+ u32 *ptr;
+ u8 *u8ptr;
+ u32 left;
+ u32 count, size = 0;
+ u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR;
+ unsigned long tmo = jiffies + DAT_TIMEOUT;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ while (num) {
+ left = sg_dma_len(sg);
+ ptr = sg_virt(sg);
+ while (left) {
+ if ((left >= MSDC_FIFO_THD) && (msdc_rxfifocnt() >= MSDC_FIFO_THD)) {
+ count = MSDC_FIFO_THD >> 2;
+ do {
+ *ptr++ = msdc_fifo_read32();
+ } while (--count);
+ left -= MSDC_FIFO_THD;
+ } else if ((left < MSDC_FIFO_THD) && msdc_rxfifocnt() >= left) {
+ while (left > 3) {
+ *ptr++ = msdc_fifo_read32();
+ left -= 4;
+ }
+
+ u8ptr = (u8 *)ptr;
+ while(left) {
+ * u8ptr++ = msdc_fifo_read8();
+ left--;
+ }
+ }
+
+ if (msdc_pio_abort(host, data, tmo))
+ goto end;
+ }
+ size += sg_dma_len(sg);
+ sg = sg_next(sg); num--;
+ }
+end:
+ data->bytes_xfered += size;
+ //printk(" PIO Read<%d>bytes\n", size);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+ if(data->error)
+ printk("read pio data->error<%d> left<%d> size<%d>\n", data->error, left, size);
+
+ return data->error;
+}
+
+static int msdc_pio_write(struct msdc_host* host, struct mmc_data *data)
+{
+ u32 base = host->base;
+ struct scatterlist *sg = data->sg;
+ u32 num = data->sg_len;
+ u32 *ptr;
+ u8 *u8ptr;
+ u32 left;
+ u32 count, size = 0;
+ u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR;
+ unsigned long tmo = jiffies + DAT_TIMEOUT;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ while (num) {
+ left = sg_dma_len(sg);
+ ptr = sg_virt(sg);
+
+ while (left) {
+ if (left >= MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
+ count = MSDC_FIFO_SZ >> 2;
+ do {
+ msdc_fifo_write32(*ptr); ptr++;
+ } while (--count);
+ left -= MSDC_FIFO_SZ;
+ } else if (left < MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
+ while (left > 3) {
+ msdc_fifo_write32(*ptr); ptr++;
+ left -= 4;
+ }
+
+ u8ptr = (u8*)ptr;
+ while( left) {
+ msdc_fifo_write8(*u8ptr);
+ u8ptr++;
+ left--;
+ }
+ }
+
+ if (msdc_pio_abort(host, data, tmo))
+ goto end;
+ }
+ size += sg_dma_len(sg);
+ sg = sg_next(sg); num--;
+ }
+end:
+ data->bytes_xfered += size;
+ //printk(" PIO Write<%d>bytes\n", size);
+ if(data->error)
+ printk("write pio data->error<%d>\n", data->error);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+
+ return data->error;
+}
+
+static void msdc_dma_start(struct msdc_host *host)
+{
+ u32 base = host->base;
+ u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1);
+
+ //printk("DMA start\n");
+}
+
+static void msdc_dma_stop(struct msdc_host *host)
+{
+ u32 base = host->base;
+ u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR;
+
+ //printk("DMA status: 0x%.8x\n",sdr_read32(MSDC_DMA_CFG));
+
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1);
+ while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS);
+ sdr_clr_bits(MSDC_INTEN, wints); /* Not just xfer_comp */
+
+ //printk("DMA stop\n");
+}
+
+static u8 msdc_dma_calcs(u8 *buf, u32 len)
+{
+ u32 i, sum = 0;
+
+ for (i = 0; i < len; i++)
+ sum += buf[i];
+
+ return 0xFF - (u8)sum;
+}
+
+static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
+{
+ u32 base = host->base;
+ u32 sglen = dma->sglen;
+ u32 j, num, bdlen;
+ u8 blkpad, dwpad, chksum;
+ struct scatterlist *sg = dma->sg;
+ gpd_t *gpd;
+ bd_t *bd;
+
+ switch (dma->mode) {
+ case MSDC_MODE_DMA_BASIC:
+ BUG_ON(dma->xfersz > 65535);
+ BUG_ON(dma->sglen != 1);
+ sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg)));
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg));
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0);
+ break;
+
+ case MSDC_MODE_DMA_DESC:
+ blkpad = (dma->flags & DMA_FLAG_PAD_BLOCK) ? 1 : 0;
+ dwpad = (dma->flags & DMA_FLAG_PAD_DWORD) ? 1 : 0;
+ chksum = (dma->flags & DMA_FLAG_EN_CHKSUM) ? 1 : 0;
+
+ num = (sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD;
+ BUG_ON(num !=1 );
+
+ gpd = dma->gpd;
+ bd = dma->bd;
+ bdlen = sglen;
+
+ gpd->hwo = 1; /* hw will clear it */
+ gpd->bdp = 1;
+ gpd->chksum = 0; /* need to clear first. */
+ gpd->chksum = (chksum ? msdc_dma_calcs((u8 *)gpd, 16) : 0);
+
+ for (j = 0; j < bdlen; j++) {
+ msdc_init_bd(&bd[j], blkpad, dwpad, sg_dma_address(sg), sg_dma_len(sg));
+ if( j == bdlen - 1)
+ bd[j].eol = 1;
+ else
+ bd[j].eol = 0;
+ bd[j].chksum = 0; /* checksume need to clear first */
+ bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0);
+ sg++;
+ }
+
+ dma->used_gpd += 2;
+ dma->used_bd += bdlen;
+
+ sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1);
+ sdr_write32(MSDC_DMA_SA, PHYSADDR((u32)dma->gpd_addr));
+ break;
+ }
+
+// printk("DMA_CTRL = 0x%x\n", sdr_read32(MSDC_DMA_CTRL));
+// printk("DMA_CFG = 0x%x\n", sdr_read32(MSDC_DMA_CFG));
+// printk("DMA_SA = 0x%x\n", sdr_read32(MSDC_DMA_SA));
+
+ return 0;
+}
+
+static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma,
+ struct scatterlist *sg, unsigned int sglen)
+{
+ BUG_ON(sglen > MAX_BD_NUM);
+
+ dma->sg = sg;
+ dma->flags = DMA_FLAG_EN_CHKSUM;
+ dma->sglen = sglen;
+ dma->xfersz = host->xfer_size;
+ dma->burstsz = MSDC_BRUST_64B;
+
+ if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT)
+ dma->mode = MSDC_MODE_DMA_BASIC;
+ else
+ dma->mode = MSDC_MODE_DMA_DESC;
+
+// printk("DMA mode<%d> sglen<%d> xfersz<%d>\n", dma->mode, dma->sglen, dma->xfersz);
+
+ msdc_dma_config(host, dma);
+}
+
+static void msdc_set_blknum(struct msdc_host *host, u32 blknum)
+{
+ u32 base = host->base;
+
+ sdr_write32(SDC_BLK_NUM, blknum);
+}
+
+static int msdc_do_request(struct mmc_host*mmc, struct mmc_request*mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ u32 base = host->base;
+ unsigned int left=0;
+ int dma = 0, read = 1, dir = DMA_FROM_DEVICE, send_type=0;
+
+#define SND_DAT 0
+#define SND_CMD 1
+
+ BUG_ON(mmc == NULL);
+ BUG_ON(mrq == NULL);
+
+ host->error = 0;
+ atomic_set(&host->abort, 0);
+
+ cmd = mrq->cmd;
+ data = mrq->cmd->data;
+
+ if (!data) {
+ send_type = SND_CMD;
+ if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+ } else {
+ BUG_ON(data->blksz > HOST_MAX_BLKSZ);
+ send_type=SND_DAT;
+
+ data->error = 0;
+ read = data->flags & MMC_DATA_READ ? 1 : 0;
+ host->data = data;
+ host->xfer_size = data->blocks * data->blksz;
+ host->blksz = data->blksz;
+
+ host->dma_xfer = dma = ((host->xfer_size >= 512) ? 1 : 0);
+
+ if (read)
+ if ((host->timeout_ns != data->timeout_ns) ||
+ (host->timeout_clks != data->timeout_clks))
+ msdc_set_timeout(host, data->timeout_ns, data->timeout_clks);
+
+ msdc_set_blknum(host, data->blocks);
+
+ if (dma) {
+ msdc_dma_on();
+ init_completion(&host->xfer_done);
+
+ if (msdc_command_start(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+
+ dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+ dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
+ msdc_dma_setup(host, &host->dma, data->sg, data->sg_len);
+
+ if (msdc_command_resp(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+
+ msdc_dma_start(host);
+
+ spin_unlock(&host->lock);
+ if (!wait_for_completion_timeout(&host->xfer_done, DAT_TIMEOUT)) {
+ /*printk("XXX CMD<%d> wait xfer_done<%d> timeout!!\n", cmd->opcode, data->blocks * data->blksz);
+ printk(" DMA_SA = 0x%x\n", sdr_read32(MSDC_DMA_SA));
+ printk(" DMA_CA = 0x%x\n", sdr_read32(MSDC_DMA_CA));
+ printk(" DMA_CTRL = 0x%x\n", sdr_read32(MSDC_DMA_CTRL));
+ printk(" DMA_CFG = 0x%x\n", sdr_read32(MSDC_DMA_CFG));*/
+ data->error = (unsigned int)-ETIMEDOUT;
+
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ spin_lock(&host->lock);
+ msdc_dma_stop(host);
+ } else {
+ if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+
+ if (read) {
+ if (msdc_pio_read(host, data))
+ goto done;
+ } else {
+ if (msdc_pio_write(host, data))
+ goto done;
+ }
+
+ if (!read) {
+ while (1) {
+ left = msdc_txfifocnt();
+ if (left == 0) {
+ break;
+ }
+ if (msdc_pio_abort(host, data, jiffies + DAT_TIMEOUT)) {
+ break;
+ /* Fix me: what about if data error, when stop ? how to? */
+ }
+ }
+ } else {
+ /* Fix me: read case: need to check CRC error */
+ }
+
+ /* For write case: SDCBUSY and Xfer_Comp will assert when DAT0 not busy.
+ For read case : SDCBUSY and Xfer_Comp will assert when last byte read out from FIFO.
+ */
+
+ /* try not to wait xfer_comp interrupt.
+ the next command will check SDC_BUSY.
+ SDC_BUSY means xfer_comp assert
+ */
+
+ } // PIO mode
+
+ /* Last: stop transfer */
+ if (data->stop){
+ if (msdc_do_command(host, data->stop, 0, CMD_TIMEOUT) != 0) {
+ goto done;
+ }
+ }
+ }
+
+done:
+ if (data != NULL) {
+ host->data = NULL;
+ host->dma_xfer = 0;
+ if (dma != 0) {
+ msdc_dma_off();
+ host->dma.used_bd = 0;
+ host->dma.used_gpd = 0;
+ dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
+ }
+ host->blksz = 0;
+
+ // printk("CMD<%d> data<%s %s> blksz<%d> block<%d> error<%d>",cmd->opcode, (dma? "dma":"pio\n"),
+ // (read ? "read ":"write") ,data->blksz, data->blocks, data->error);
+ }
+
+ if (mrq->cmd->error) host->error = 0x001;
+ if (mrq->data && mrq->data->error) host->error |= 0x010;
+ if (mrq->stop && mrq->stop->error) host->error |= 0x100;
+
+ //if (host->error) printk("host->error<%d>\n", host->error);
+
+ return host->error;
+}
+
+static int msdc_app_cmd(struct mmc_host *mmc, struct msdc_host *host)
+{
+ struct mmc_command cmd;
+ struct mmc_request mrq;
+ u32 err;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = MMC_APP_CMD;
+#if 0 /* bug: we meet mmc->card is null when ACMD6 */
+ cmd.arg = mmc->card->rca << 16;
+#else
+ cmd.arg = host->app_cmd_arg;
+#endif
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ mrq.cmd = &cmd; cmd.mrq = &mrq;
+ cmd.data = NULL;
+
+ err = msdc_do_command(host, &cmd, 0, CMD_TIMEOUT);
+ return err;
+}
+
+static int msdc_tune_cmdrsp(struct msdc_host*host, struct mmc_command *cmd)
+{
+ int result = -1;
+ u32 base = host->base;
+ u32 rsmpl, cur_rsmpl, orig_rsmpl;
+ u32 rrdly, cur_rrdly = 0, orig_rrdly;
+ u32 skip = 1;
+
+ /* ==== don't support 3.0 now ====
+ 1: R_SMPL[1]
+ 2: PAD_CMD_RESP_RXDLY[26:22]
+ ==========================*/
+
+ // save the previous tune result
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_RSPL, orig_rsmpl);
+ sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, orig_rrdly);
+
+ rrdly = 0;
+ do {
+ for (rsmpl = 0; rsmpl < 2; rsmpl++) {
+ /* Lv1: R_SMPL[1] */
+ cur_rsmpl = (orig_rsmpl + rsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, cur_rsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ //printk("TUNE_CMD app_cmd<%d> failed: RESP_RXDLY<%d>,R_SMPL<%d>\n",
+ // host->mrq->cmd->opcode, cur_rrdly, cur_rsmpl);
+ continue;
+ }
+ }
+ result = msdc_do_command(host, cmd, 0, CMD_TIMEOUT); // not tune.
+ //printk("TUNE_CMD<%d> %s PAD_CMD_RESP_RXDLY[26:22]<%d> R_SMPL[1]<%d>\n", cmd->opcode,
+// (result == 0) ? "PASS" : "FAIL", cur_rrdly, cur_rsmpl);
+
+ if (result == 0) {
+ return 0;
+ }
+ if (result != (unsigned int)(-EIO)) {
+ // printk("TUNE_CMD<%d> Error<%d> not -EIO\n", cmd->opcode, result);
+ return result;
+ }
+
+ /* should be EIO */
+ if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */
+ msdc_abort_data(host);
+ }
+ }
+
+ /* Lv2: PAD_CMD_RESP_RXDLY[26:22] */
+ cur_rrdly = (orig_rrdly + rrdly + 1) % 32;
+ sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, cur_rrdly);
+ }while (++rrdly < 32);
+
+ return result;
+}
+
+/* Support SD2.0 Only */
+static int msdc_tune_bread(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ u32 ddr=0;
+ u32 dcrc = 0;
+ u32 rxdly, cur_rxdly0, cur_rxdly1;
+ u32 dsmpl, cur_dsmpl, orig_dsmpl;
+ u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3;
+ u32 cur_dat4, cur_dat5, cur_dat6, cur_dat7;
+ u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
+ u32 orig_dat4, orig_dat5, orig_dat6, orig_dat7;
+ int result = -1;
+ u32 skip = 1;
+
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl);
+
+ /* Tune Method 2. */
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
+
+ rxdly = 0;
+ do {
+ for (dsmpl = 0; dsmpl < 2; dsmpl++) {
+ cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ //printk("TUNE_BREAD app_cmd<%d> failed\n", host->mrq->cmd->opcode);
+ continue;
+ }
+ }
+ result = msdc_do_request(mmc,mrq);
+
+ sdr_get_field(SDC_DCRC_STS, SDC_DCRC_STS_POS|SDC_DCRC_STS_NEG, dcrc); /* RO */
+ if (!ddr) dcrc &= ~SDC_DCRC_STS_NEG;
+ //printk("TUNE_BREAD<%s> dcrc<0x%x> DATRDDLY0/1<0x%x><0x%x> dsmpl<0x%x>\n",
+ // (result == 0 && dcrc == 0) ? "PASS" : "FAIL", dcrc,
+ // sdr_read32(MSDC_DAT_RDDLY0), sdr_read32(MSDC_DAT_RDDLY1), cur_dsmpl);
+
+ /* Fix me: result is 0, but dcrc is still exist */
+ if (result == 0 && dcrc == 0) {
+ goto done;
+ } else {
+ /* there is a case: command timeout, and data phase not processed */
+ if (mrq->data->error != 0 && mrq->data->error != (unsigned int)(-EIO)) {
+ //printk("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>\n",
+ // result, mrq->cmd->error, mrq->data->error);
+ goto done;
+ }
+ }
+ }
+
+ cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
+ cur_rxdly1 = sdr_read32(MSDC_DAT_RDDLY1);
+
+ /* E1 ECO. YD: Reverse */
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat4 = (cur_rxdly1 >> 24) & 0x1F;
+ orig_dat5 = (cur_rxdly1 >> 16) & 0x1F;
+ orig_dat6 = (cur_rxdly1 >> 8) & 0x1F;
+ orig_dat7 = (cur_rxdly1 >> 0) & 0x1F;
+ } else {
+ orig_dat0 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat4 = (cur_rxdly1 >> 0) & 0x1F;
+ orig_dat5 = (cur_rxdly1 >> 8) & 0x1F;
+ orig_dat6 = (cur_rxdly1 >> 16) & 0x1F;
+ orig_dat7 = (cur_rxdly1 >> 24) & 0x1F;
+ }
+
+ if (ddr) {
+ cur_dat0 = (dcrc & (1 << 0) || dcrc & (1 << 8)) ? ((orig_dat0 + 1) % 32) : orig_dat0;
+ cur_dat1 = (dcrc & (1 << 1) || dcrc & (1 << 9)) ? ((orig_dat1 + 1) % 32) : orig_dat1;
+ cur_dat2 = (dcrc & (1 << 2) || dcrc & (1 << 10)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
+ cur_dat3 = (dcrc & (1 << 3) || dcrc & (1 << 11)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
+ } else {
+ cur_dat0 = (dcrc & (1 << 0)) ? ((orig_dat0 + 1) % 32) : orig_dat0;
+ cur_dat1 = (dcrc & (1 << 1)) ? ((orig_dat1 + 1) % 32) : orig_dat1;
+ cur_dat2 = (dcrc & (1 << 2)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
+ cur_dat3 = (dcrc & (1 << 3)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
+ }
+ cur_dat4 = (dcrc & (1 << 4)) ? ((orig_dat4 + 1) % 32) : orig_dat4;
+ cur_dat5 = (dcrc & (1 << 5)) ? ((orig_dat5 + 1) % 32) : orig_dat5;
+ cur_dat6 = (dcrc & (1 << 6)) ? ((orig_dat6 + 1) % 32) : orig_dat6;
+ cur_dat7 = (dcrc & (1 << 7)) ? ((orig_dat7 + 1) % 32) : orig_dat7;
+
+ cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);
+ cur_rxdly1 = (cur_dat4 << 24) | (cur_dat5 << 16) | (cur_dat6 << 8) | (cur_dat7 << 0);
+
+ sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);
+ sdr_write32(MSDC_DAT_RDDLY1, cur_rxdly1);
+
+ } while (++rxdly < 32);
+
+done:
+ return result;
+}
+
+static int msdc_tune_bwrite(struct mmc_host *mmc,struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+
+ u32 wrrdly, cur_wrrdly = 0, orig_wrrdly;
+ u32 dsmpl, cur_dsmpl, orig_dsmpl;
+ u32 rxdly, cur_rxdly0;
+ u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
+ u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3;
+ int result = -1;
+ u32 skip = 1;
+
+ // MSDC_IOCON_DDR50CKD need to check. [Fix me]
+
+ sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, orig_wrrdly);
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl );
+
+ /* Tune Method 2. just DAT0 */
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
+ cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
+
+ /* E1 ECO. YD: Reverse */
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 0) & 0x1F;
+ } else {
+ orig_dat0 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
+ }
+
+ rxdly = 0;
+ do {
+ wrrdly = 0;
+ do {
+ for (dsmpl = 0; dsmpl < 2; dsmpl++) {
+ cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ //printk("TUNE_BWRITE app_cmd<%d> failed\n", host->mrq->cmd->opcode);
+ continue;
+ }
+ }
+ result = msdc_do_request(mmc,mrq);
+
+ //printk("TUNE_BWRITE<%s> DSPL<%d> DATWRDLY<%d> MSDC_DAT_RDDLY0<0x%x>\n",
+ // result == 0 ? "PASS" : "FAIL",
+ // cur_dsmpl, cur_wrrdly, cur_rxdly0);
+
+ if (result == 0) {
+ goto done;
+ }
+ else {
+ /* there is a case: command timeout, and data phase not processed */
+ if (mrq->data->error != (unsigned int)(-EIO)) {
+ //printk("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>\n",
+ // && result, mrq->cmd->error, mrq->data->error);
+ goto done;
+ }
+ }
+ }
+ cur_wrrdly = (orig_wrrdly + wrrdly + 1) % 32;
+ sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, cur_wrrdly);
+ } while (++wrrdly < 32);
+
+ cur_dat0 = (orig_dat0 + rxdly) % 32; /* only adjust bit-1 for crc */
+ cur_dat1 = orig_dat1;
+ cur_dat2 = orig_dat2;
+ cur_dat3 = orig_dat3;
+
+ cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);
+ sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);
+ } while (++rxdly < 32);
+
+done:
+ return result;
+}
+
+static int msdc_get_card_status(struct mmc_host *mmc, struct msdc_host *host, u32 *status)
+{
+ struct mmc_command cmd;
+ struct mmc_request mrq;
+ u32 err;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = MMC_SEND_STATUS;
+ if (mmc->card) {
+ cmd.arg = mmc->card->rca << 16;
+ } else {
+ //printk("cmd13 mmc card is null\n");
+ cmd.arg = host->app_cmd_arg;
+ }
+ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ mrq.cmd = &cmd; cmd.mrq = &mrq;
+ cmd.data = NULL;
+
+ err = msdc_do_command(host, &cmd, 1, CMD_TIMEOUT);
+
+ if (status)
+ *status = cmd.resp[0];
+
+ return err;
+}
+
+static int msdc_check_busy(struct mmc_host *mmc, struct msdc_host *host)
+{
+ u32 err = 0;
+ u32 status = 0;
+
+ do {
+ err = msdc_get_card_status(mmc, host, &status);
+ if (err)
+ return err;
+ /* need cmd12? */
+ //printk("cmd<13> resp<0x%x>\n", status);
+ } while (R1_CURRENT_STATE(status) == 7);
+
+ return err;
+}
+
+static int msdc_tune_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ int ret=0, read;
+
+ cmd = mrq->cmd;
+ data = mrq->cmd->data;
+
+ read = data->flags & MMC_DATA_READ ? 1 : 0;
+
+ if (read) {
+ if (data->error == (unsigned int)(-EIO))
+ ret = msdc_tune_bread(mmc,mrq);
+ } else {
+ ret = msdc_check_busy(mmc, host);
+ if (ret){
+ //printk("XXX cmd13 wait program done failed\n");
+ return ret;
+ }
+ /* CRC and TO */
+ /* Fix me: don't care card status? */
+ ret = msdc_tune_bwrite(mmc,mrq);
+ }
+
+ return ret;
+}
+
+static void msdc_ops_request(struct mmc_host *mmc,struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+
+ if (host->mrq) {
+ //printk("XXX host->mrq<0x%.8x>\n", (int)host->mrq);
+ BUG();
+ }
+ if (!is_card_present(host) || host->power_mode == MMC_POWER_OFF) {
+ //printk("cmd<%d> card<%d> power<%d>\n", mrq->cmd->opcode, is_card_present(host), host->power_mode);
+ mrq->cmd->error = (unsigned int)-ENOMEDIUM;
+ mrq->done(mrq);
+ return;
+ }
+ spin_lock(&host->lock);
+
+ host->mrq = mrq;
+
+ if (msdc_do_request(mmc,mrq))
+ if(host->hw->flags & MSDC_REMOVABLE && mrq->data && mrq->data->error)
+ msdc_tune_request(mmc,mrq);
+
+ if (mrq->cmd->opcode == MMC_APP_CMD) {
+ host->app_cmd = 1;
+ host->app_cmd_arg = mrq->cmd->arg; /* save the RCA */
+ } else {
+ host->app_cmd = 0;
+ }
+
+ host->mrq = NULL;
+
+ spin_unlock(&host->lock);
+
+ mmc_request_done(mmc, mrq);
+}
+
+/* called by ops.set_ios */
+static void msdc_set_buswidth(struct msdc_host *host, u32 width)
+{
+ u32 base = host->base;
+ u32 val = sdr_read32(SDC_CFG);
+
+ val &= ~SDC_CFG_BUSWIDTH;
+
+ switch (width) {
+ default:
+ case MMC_BUS_WIDTH_1:
+ width = 1;
+ val |= (MSDC_BUS_1BITS << 16);
+ break;
+ case MMC_BUS_WIDTH_4:
+ val |= (MSDC_BUS_4BITS << 16);
+ break;
+ case MMC_BUS_WIDTH_8:
+ val |= (MSDC_BUS_8BITS << 16);
+ break;
+ }
+
+ sdr_write32(SDC_CFG, val);
+
+ //printk("Bus Width = %d\n", width);
+}
+
+/* ops.set_ios */
+static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct msdc_hw *hw=host->hw;
+ u32 base = host->base;
+ u32 ddr = 0;
+
+#ifdef MT6575_SD_DEBUG
+ static char *vdd[] = {
+ "1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v",
+ "2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v",
+ "2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v",
+ "3.40v", "3.50v", "3.60v"
+ };
+ static char *power_mode[] = {
+ "OFF", "UP", "ON"
+ };
+ static char *bus_mode[] = {
+ "UNKNOWN", "OPENDRAIN", "PUSHPULL"
+ };
+ static char *timing[] = {
+ "LEGACY", "MMC_HS", "SD_HS"
+ };
+
+ /*printk("SET_IOS: CLK(%dkHz), BUS(%s), BW(%u), PWR(%s), VDD(%s), TIMING(%s)\n",
+ ios->clock / 1000, bus_mode[ios->bus_mode],
+ (ios->bus_width == MMC_BUS_WIDTH_4) ? 4 : 1,
+ power_mode[ios->power_mode], vdd[ios->vdd], timing[ios->timing]);*/
+#endif
+
+ msdc_set_buswidth(host, ios->bus_width);
+
+ /* Power control ??? */
+ switch (ios->power_mode) {
+ case MMC_POWER_OFF:
+ case MMC_POWER_UP:
+ // msdc_set_power_mode(host, ios->power_mode); /* --- by chhung */
+ break;
+ case MMC_POWER_ON:
+ host->power_mode = MMC_POWER_ON;
+ break;
+ default:
+ break;
+ }
+
+ /* Clock control */
+ if (host->mclk != ios->clock) {
+ if(ios->clock > 25000000) {
+ //printk("SD data latch edge<%d>\n", hw->data_edge);
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, hw->cmd_edge);
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, hw->data_edge);
+ } else {
+ sdr_write32(MSDC_IOCON, 0x00000000);
+ sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward
+ sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);
+ sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward
+ }
+ msdc_set_mclk(host, ddr, ios->clock);
+ }
+}
+
+/* ops.get_ro */
+static int msdc_ops_get_ro(struct mmc_host *mmc)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ unsigned long flags;
+ int ro = 0;
+
+ if (host->hw->flags & MSDC_WP_PIN_EN) { /* set for card */
+ spin_lock_irqsave(&host->lock, flags);
+ ro = (sdr_read32(MSDC_PS) >> 31);
+ spin_unlock_irqrestore(&host->lock, flags);
+ }
+ return ro;
+}
+
+/* ops.get_cd */
+static int msdc_ops_get_cd(struct mmc_host *mmc)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ unsigned long flags;
+ int present = 1;
+
+ /* for sdio, MSDC_REMOVABLE not set, always return 1 */
+ if (!(host->hw->flags & MSDC_REMOVABLE)) {
+ /* For sdio, read H/W always get<1>, but may timeout some times */
+#if 1
+ host->card_inserted = 1;
+ return 1;
+#else
+ host->card_inserted = (host->pm_state.event == PM_EVENT_USER_RESUME) ? 1 : 0;
+ printk("sdio ops_get_cd<%d>\n", host->card_inserted);
+ return host->card_inserted;
+#endif
+ }
+
+ /* MSDC_CD_PIN_EN set for card */
+ if (host->hw->flags & MSDC_CD_PIN_EN) {
+ spin_lock_irqsave(&host->lock, flags);
+#if 0
+ present = host->card_inserted; /* why not read from H/W: Fix me*/
+#else
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1;
+ host->card_inserted = present;
+#endif
+ spin_unlock_irqrestore(&host->lock, flags);
+ } else {
+ present = 0; /* TODO? Check DAT3 pins for card detection */
+ }
+
+ //printk("ops_get_cd return<%d>\n", present);
+ return present;
+}
+
+/* ops.enable_sdio_irq */
+static void msdc_ops_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ u32 tmp;
+
+ if (hw->flags & MSDC_EXT_SDIO_IRQ) { /* yes for sdio */
+ if (enable) {
+ hw->enable_sdio_eirq(); /* combo_sdio_enable_eirq */
+ } else {
+ hw->disable_sdio_eirq(); /* combo_sdio_disable_eirq */
+ }
+ } else {
+ //printk("XXX \n"); /* so never enter here */
+ tmp = sdr_read32(SDC_CFG);
+ /* FIXME. Need to interrupt gap detection */
+ if (enable) {
+ tmp |= (SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);
+ } else {
+ tmp &= ~(SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);
+ }
+ sdr_write32(SDC_CFG, tmp);
+ }
+}
+
+static struct mmc_host_ops mt_msdc_ops = {
+ .request = msdc_ops_request,
+ .set_ios = msdc_ops_set_ios,
+ .get_ro = msdc_ops_get_ro,
+ .get_cd = msdc_ops_get_cd,
+ .enable_sdio_irq = msdc_ops_enable_sdio_irq,
+};
+
+/*--------------------------------------------------------------------------*/
+/* interrupt handler */
+/*--------------------------------------------------------------------------*/
+static irqreturn_t msdc_irq(int irq, void *dev_id)
+{
+ struct msdc_host *host = (struct msdc_host *)dev_id;
+ struct mmc_data *data = host->data;
+ struct mmc_command *cmd = host->cmd;
+ u32 base = host->base;
+
+ u32 cmdsts = MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | MSDC_INT_CMDRDY |
+ MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | MSDC_INT_ACMDRDY |
+ MSDC_INT_ACMD19_DONE;
+ u32 datsts = MSDC_INT_DATCRCERR |MSDC_INT_DATTMO;
+
+ u32 intsts = sdr_read32(MSDC_INT);
+ u32 inten = sdr_read32(MSDC_INTEN); inten &= intsts;
+
+ sdr_write32(MSDC_INT, intsts); /* clear interrupts */
+ /* MSG will cause fatal error */
+
+ /* card change interrupt */
+ if (intsts & MSDC_INT_CDSC){
+ //printk("MSDC_INT_CDSC irq<0x%.8x>\n", intsts);
+ tasklet_hi_schedule(&host->card_tasklet);
+ /* tuning when plug card ? */
+ }
+
+ /* sdio interrupt */
+ if (intsts & MSDC_INT_SDIOIRQ){
+ //printk("XXX MSDC_INT_SDIOIRQ\n"); /* seems not sdio irq */
+ //mmc_signal_sdio_irq(host->mmc);
+ }
+
+ /* transfer complete interrupt */
+ if (data != NULL) {
+ if (inten & MSDC_INT_XFER_COMPL) {
+ data->bytes_xfered = host->dma.xfersz;
+ complete(&host->xfer_done);
+ }
+
+ if (intsts & datsts) {
+ /* do basic reset, or stop command will sdc_busy */
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ atomic_set(&host->abort, 1); /* For PIO mode exit */
+
+ if (intsts & MSDC_INT_DATTMO){
+ //printk("XXX CMD<%d> MSDC_INT_DATTMO\n", host->mrq->cmd->opcode);
+ data->error = (unsigned int)-ETIMEDOUT;
+ }
+ else if (intsts & MSDC_INT_DATCRCERR){
+ //printk("XXX CMD<%d> MSDC_INT_DATCRCERR, SDC_DCRC_STS<0x%x>\n", host->mrq->cmd->opcode, sdr_read32(SDC_DCRC_STS));
+ data->error = (unsigned int)-EIO;
+ }
+
+ //if(sdr_read32(MSDC_INTEN) & MSDC_INT_XFER_COMPL) {
+ if (host->dma_xfer) {
+ complete(&host->xfer_done); /* Read CRC come fast, XFER_COMPL not enabled */
+ } /* PIO mode can't do complete, because not init */
+ }
+ }
+
+ /* command interrupts */
+ if ((cmd != NULL) && (intsts & cmdsts)) {
+ if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) ||
+ (intsts & MSDC_INT_ACMD19_DONE)) {
+ u32 *rsp = &cmd->resp[0];
+
+ switch (host->cmd_rsp) {
+ case RESP_NONE:
+ break;
+ case RESP_R2:
+ *rsp++ = sdr_read32(SDC_RESP3); *rsp++ = sdr_read32(SDC_RESP2);
+ *rsp++ = sdr_read32(SDC_RESP1); *rsp++ = sdr_read32(SDC_RESP0);
+ break;
+ default: /* Response types 1, 3, 4, 5, 6, 7(1b) */
+ if ((intsts & MSDC_INT_ACMDRDY) || (intsts & MSDC_INT_ACMD19_DONE)) {
+ *rsp = sdr_read32(SDC_ACMD_RESP);
+ } else {
+ *rsp = sdr_read32(SDC_RESP0);
+ }
+ break;
+ }
+ } else if ((intsts & MSDC_INT_RSPCRCERR) || (intsts & MSDC_INT_ACMDCRCERR)) {
+ if(intsts & MSDC_INT_ACMDCRCERR){
+ //printk("XXX CMD<%d> MSDC_INT_ACMDCRCERR\n",cmd->opcode);
+ }
+ else {
+ //printk("XXX CMD<%d> MSDC_INT_RSPCRCERR\n",cmd->opcode);
+ }
+ cmd->error = (unsigned int)-EIO;
+ } else if ((intsts & MSDC_INT_CMDTMO) || (intsts & MSDC_INT_ACMDTMO)) {
+ if(intsts & MSDC_INT_ACMDTMO){
+ //printk("XXX CMD<%d> MSDC_INT_ACMDTMO\n",cmd->opcode);
+ }
+ else {
+ //printk("XXX CMD<%d> MSDC_INT_CMDTMO\n",cmd->opcode);
+ }
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ complete(&host->cmd_done);
+ }
+
+ /* mmc irq interrupts */
+ if (intsts & MSDC_INT_MMCIRQ) {
+ //printk(KERN_INFO "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n", host->id, sdr_read32(SDC_CSTS));
+ }
+
+#ifdef MT6575_SD_DEBUG
+ {
+ msdc_int_reg *int_reg = (msdc_int_reg*)&intsts;
+ /*printk("IRQ_EVT(0x%x): MMCIRQ(%d) CDSC(%d), ACRDY(%d), ACTMO(%d), ACCRE(%d) AC19DN(%d)\n",
+ intsts,
+ int_reg->mmcirq,
+ int_reg->cdsc,
+ int_reg->atocmdrdy,
+ int_reg->atocmdtmo,
+ int_reg->atocmdcrc,
+ int_reg->atocmd19done);
+ printk("IRQ_EVT(0x%x): SDIO(%d) CMDRDY(%d), CMDTMO(%d), RSPCRC(%d), CSTA(%d)\n",
+ intsts,
+ int_reg->sdioirq,
+ int_reg->cmdrdy,
+ int_reg->cmdtmo,
+ int_reg->rspcrc,
+ int_reg->csta);
+ printk("IRQ_EVT(0x%x): XFCMP(%d) DXDONE(%d), DATTMO(%d), DATCRC(%d), DMAEMP(%d)\n",
+ intsts,
+ int_reg->xfercomp,
+ int_reg->dxferdone,
+ int_reg->dattmo,
+ int_reg->datcrc,
+ int_reg->dmaqempty);*/
+
+ }
+#endif
+
+ return IRQ_HANDLED;
+}
+
+/*--------------------------------------------------------------------------*/
+/* platform_driver members */
+/*--------------------------------------------------------------------------*/
+/* called by msdc_drv_probe/remove */
+static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
+{
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+
+ /* for sdio, not set */
+ if ((hw->flags & MSDC_CD_PIN_EN) == 0) {
+ /* Pull down card detection pin since it is not avaiable */
+ /*
+ if (hw->config_gpio_pin)
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
+ */
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+ sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
+ return;
+ }
+
+ //printk("CD IRQ Eanable(%d)\n", enable);
+
+ if (enable) {
+ if (hw->enable_cd_eirq) { /* not set, never enter */
+ hw->enable_cd_eirq();
+ } else {
+ /* card detection circuit relies on the core power so that the core power
+ * shouldn't be turned off. Here adds a reference count to keep
+ * the core power alive.
+ */
+ //msdc_vcore_on(host); //did in msdc_init_hw()
+
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_UP);
+
+ sdr_set_field(MSDC_PS, MSDC_PS_CDDEBOUNCE, DEFAULT_DEBOUNCE);
+ sdr_set_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_set_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+ sdr_set_bits(SDC_CFG, SDC_CFG_INSWKUP); /* not in document! Fix me */
+ }
+ } else {
+ if (hw->disable_cd_eirq) {
+ hw->disable_cd_eirq();
+ } else {
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
+
+ sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+
+ /* Here decreases a reference count to core power since card
+ * detection circuit is shutdown.
+ */
+ //msdc_vcore_off(host);
+ }
+ }
+}
+
+/* called by msdc_drv_probe */
+static void msdc_init_hw(struct msdc_host *host)
+{
+ u32 base = host->base;
+ struct msdc_hw *hw = host->hw;
+
+#ifdef MT6575_SD_DEBUG
+ msdc_reg[host->id] = (struct msdc_regs *)host->base;
+#endif
+
+ /* Power on */
+#if 0 /* --- chhung */
+ msdc_vcore_on(host);
+ msdc_pin_reset(host, MSDC_PIN_PULL_UP);
+ msdc_select_clksrc(host, hw->clk_src);
+ enable_clock(PERI_MSDC0_PDN + host->id, "SD");
+ msdc_vdd_on(host);
+#endif /* end of --- */
+ /* Configure to MMC/SD mode */
+ sdr_set_field(MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC);
+
+ /* Reset */
+ msdc_reset();
+ msdc_clr_fifo();
+
+ /* Disable card detection */
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+
+ /* Disable and clear all interrupts */
+ sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
+ sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
+
+#if 1
+ /* reset tuning parameter */
+ sdr_write32(MSDC_PAD_CTL0, 0x00090000);
+ sdr_write32(MSDC_PAD_CTL1, 0x000A0000);
+ sdr_write32(MSDC_PAD_CTL2, 0x000A0000);
+ // sdr_write32(MSDC_PAD_TUNE, 0x00000000);
+ sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward
+ // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000);
+ sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward
+ sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);
+ sdr_write32(MSDC_IOCON, 0x00000000);
+#if 0 // use MT7620 default value: 0x403c004f
+ sdr_write32(MSDC_PATCH_BIT0, 0x003C000F); /* bit0 modified: Rx Data Clock Source: 1 -> 2.0*/
+#endif
+
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ if (host->id == 1) {
+ sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_WRDAT_CRCS, 1);
+ sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_CMD_RSP, 1);
+
+ /* internal clock: latch read data */
+ sdr_set_bits(MSDC_PATCH_BIT0, MSDC_PATCH_BIT_CKGEN_CK);
+ }
+ }
+#endif
+
+ /* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in
+ pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only
+ set when kernel driver wants to use SDIO bus interrupt */
+ /* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */
+ sdr_set_bits(SDC_CFG, SDC_CFG_SDIO);
+
+ /* disable detect SDIO device interupt function */
+ sdr_clr_bits(SDC_CFG, SDC_CFG_SDIOIDE);
+
+ /* eneable SMT for glitch filter */
+ sdr_set_bits(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKSMT);
+ sdr_set_bits(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDSMT);
+ sdr_set_bits(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATSMT);
+
+#if 1
+ /* set clk, cmd, dat pad driving */
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, hw->clk_drv);
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv);
+#else
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 0);
+#endif
+
+ /* set sampling edge */
+
+ /* write crc timeout detection */
+ sdr_set_field(MSDC_PATCH_BIT0, 1 << 30, 1);
+
+ /* Configure to default data timeout */
+ sdr_set_field(SDC_CFG, SDC_CFG_DTOC, DEFAULT_DTOC);
+
+ msdc_set_buswidth(host, MMC_BUS_WIDTH_1);
+
+ //printk("init hardware done!\n");
+}
+
+/* called by msdc_drv_remove */
+static void msdc_deinit_hw(struct msdc_host *host)
+{
+ u32 base = host->base;
+
+ /* Disable and clear all interrupts */
+ sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
+ sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
+
+ /* Disable card detection */
+ msdc_enable_cd_irq(host, 0);
+ // msdc_set_power_mode(host, MMC_POWER_OFF); /* make sure power down */ /* --- by chhung */
+}
+
+/* init gpd and bd list in msdc_drv_probe */
+static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma)
+{
+ gpd_t *gpd = dma->gpd;
+ bd_t *bd = dma->bd;
+ bd_t *ptr, *prev;
+
+ /* we just support one gpd */
+ int bdlen = MAX_BD_PER_GPD;
+
+ /* init the 2 gpd */
+ memset(gpd, 0, sizeof(gpd_t) * 2);
+ //gpd->next = (void *)virt_to_phys(gpd + 1); /* pointer to a null gpd, bug! kmalloc <-> virt_to_phys */
+ //gpd->next = (dma->gpd_addr + 1); /* bug */
+ gpd->next = (void *)((u32)dma->gpd_addr + sizeof(gpd_t));
+
+ //gpd->intr = 0;
+ gpd->bdp = 1; /* hwo, cs, bd pointer */
+ //gpd->ptr = (void*)virt_to_phys(bd);
+ gpd->ptr = (void *)dma->bd_addr; /* physical address */
+
+ memset(bd, 0, sizeof(bd_t) * bdlen);
+ ptr = bd + bdlen - 1;
+ //ptr->eol = 1; /* 0 or 1 [Fix me]*/
+ //ptr->next = 0;
+
+ while (ptr != bd) {
+ prev = ptr - 1;
+ prev->next = (void *)(dma->bd_addr + sizeof(bd_t) *(ptr - bd));
+ ptr = prev;
+ }
+}
+
+static int msdc_drv_probe(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ __iomem void *base;
+ struct mmc_host *mmc;
+ struct resource *mem;
+ struct msdc_host *host;
+ struct msdc_hw *hw;
+ int ret, irq;
+ pdev->dev.platform_data = &msdc0_hw;
+
+ /* Allocate MMC host for this device */
+ mmc = mmc_alloc_host(sizeof(struct msdc_host), &pdev->dev);
+ if (!mmc) return -ENOMEM;
+
+ hw = (struct msdc_hw*)pdev->dev.platform_data;
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ irq = platform_get_irq(pdev, 0);
+
+ //BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */
+
+ base = devm_request_and_ioremap(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+/* mem = request_mem_region(mem->start - 0xa0000000, (mem->end - mem->start + 1) - 0xa0000000, dev_name(&pdev->dev));
+ if (mem == NULL) {
+ mmc_free_host(mmc);
+ return -EBUSY;
+ }
+*/
+ /* Set host parameters to mmc */
+ mmc->ops = &mt_msdc_ops;
+ mmc->f_min = HOST_MIN_MCLK;
+ mmc->f_max = HOST_MAX_MCLK;
+ mmc->ocr_avail = MSDC_OCR_AVAIL;
+
+ /* For sd card: MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED,
+ For sdio : MSDC_EXT_SDIO_IRQ | MSDC_HIGHSPEED */
+ if (hw->flags & MSDC_HIGHSPEED) {
+ mmc->caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
+ }
+ if (hw->data_pins == 4) { /* current data_pins are all 4*/
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
+ } else if (hw->data_pins == 8) {
+ mmc->caps |= MMC_CAP_8_BIT_DATA;
+ }
+ if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ))
+ mmc->caps |= MMC_CAP_SDIO_IRQ; /* yes for sdio */
+
+ /* MMC core transfer sizes tunable parameters */
+ // mmc->max_hw_segs = MAX_HW_SGMTS;
+// mmc->max_phys_segs = MAX_PHY_SGMTS;
+ mmc->max_seg_size = MAX_SGMT_SZ;
+ mmc->max_blk_size = HOST_MAX_BLKSZ;
+ mmc->max_req_size = MAX_REQ_SZ;
+ mmc->max_blk_count = mmc->max_req_size;
+
+ host = mmc_priv(mmc);
+ host->hw = hw;
+ host->mmc = mmc;
+ host->id = pdev->id;
+ host->error = 0;
+ host->irq = irq;
+ host->base = (unsigned long) base;
+ host->mclk = 0; /* mclk: the request clock of mmc sub-system */
+ host->hclk = hclks[hw->clk_src]; /* hclk: clock of clock source to msdc controller */
+ host->sclk = 0; /* sclk: the really clock after divition */
+ host->pm_state = PMSG_RESUME;
+ host->suspend = 0;
+ host->core_clkon = 0;
+ host->card_clkon = 0;
+ host->core_power = 0;
+ host->power_mode = MMC_POWER_OFF;
+// host->card_inserted = hw->flags & MSDC_REMOVABLE ? 0 : 1;
+ host->timeout_ns = 0;
+ host->timeout_clks = DEFAULT_DTOC * 65536;
+
+ host->mrq = NULL;
+ //init_MUTEX(&host->sem); /* we don't need to support multiple threads access */
+
+ host->dma.used_gpd = 0;
+ host->dma.used_bd = 0;
+
+ /* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */
+ host->dma.gpd = dma_alloc_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), &host->dma.gpd_addr, GFP_KERNEL);
+ host->dma.bd = dma_alloc_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), &host->dma.bd_addr, GFP_KERNEL);
+ BUG_ON((!host->dma.gpd) || (!host->dma.bd));
+ msdc_init_gpd_bd(host, &host->dma);
+ /*for emmc*/
+ msdc_6575_host[pdev->id] = host;
+
+ tasklet_init(&host->card_tasklet, msdc_tasklet_card, (ulong)host);
+ spin_lock_init(&host->lock);
+ msdc_init_hw(host);
+
+ ret = request_irq((unsigned int)irq, msdc_irq, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), host);
+ if (ret) goto release;
+ // mt65xx_irq_unmask(irq); /* --- by chhung */
+
+ if (hw->flags & MSDC_CD_PIN_EN) { /* not set for sdio */
+ if (hw->request_cd_eirq) { /* not set for MT6575 */
+ hw->request_cd_eirq(msdc_eirq_cd, (void*)host); /* msdc_eirq_cd will not be used! */
+ }
+ }
+
+ if (hw->request_sdio_eirq) /* set to combo_sdio_request_eirq() for WIFI */
+ hw->request_sdio_eirq(msdc_eirq_sdio, (void*)host); /* msdc_eirq_sdio() will be called when EIRQ */
+
+ if (hw->register_pm) {/* yes for sdio */
+ if(hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */
+ //printk("MSDC_SYS_SUSPEND and register_pm both set\n");
+ }
+ //mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* pm not controlled by system but by client. */ /* --- by chhung */
+ }
+
+ platform_set_drvdata(pdev, mmc);
+
+ ret = mmc_add_host(mmc);
+ if (ret) goto free_irq;
+
+ /* Config card detection pin and enable interrupts */
+ if (hw->flags & MSDC_CD_PIN_EN) { /* set for card */
+ msdc_enable_cd_irq(host, 1);
+ } else {
+ msdc_enable_cd_irq(host, 0);
+ }
+
+ return 0;
+
+free_irq:
+ free_irq(irq, host);
+release:
+ platform_set_drvdata(pdev, NULL);
+ msdc_deinit_hw(host);
+
+ tasklet_kill(&host->card_tasklet);
+
+/* if (mem)
+ release_mem_region(mem->start, mem->end - mem->start + 1);
+*/
+ mmc_free_host(mmc);
+
+ return ret;
+}
+
+/* 4 device share one driver, using "drvdata" to show difference */
+static int msdc_drv_remove(struct platform_device *pdev)
+{
+ struct mmc_host *mmc;
+ struct msdc_host *host;
+ struct resource *mem;
+
+
+ mmc = platform_get_drvdata(pdev);
+ BUG_ON(!mmc);
+
+ host = mmc_priv(mmc);
+ BUG_ON(!host);
+
+ //printk("removed !!!\n");
+
+ platform_set_drvdata(pdev, NULL);
+ mmc_remove_host(host->mmc);
+ msdc_deinit_hw(host);
+
+ tasklet_kill(&host->card_tasklet);
+ free_irq(host->irq, host);
+
+ dma_free_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), host->dma.gpd, host->dma.gpd_addr);
+ dma_free_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), host->dma.bd, host->dma.bd_addr);
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ if (mem)
+ release_mem_region(mem->start, mem->end - mem->start + 1);
+
+ mmc_free_host(host->mmc);
+
+ return 0;
+}
+
+static const struct of_device_id mt7620a_sdhci_match[] = {
+ { .compatible = "ralink,mt7620a-sdhci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, rt288x_wdt_match);
+
+/* Fix me: Power Flow */
+static struct platform_driver mt_msdc_driver = {
+ .probe = msdc_drv_probe,
+ .remove = msdc_drv_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = mt7620a_sdhci_match,
+
+ },
+};
+
+static int __init mt_msdc_init(void)
+{
+ int ret;
+/* +++ chhung */
+ unsigned int reg;
+
+ mtk_sd_device.dev.platform_data = &msdc0_hw;
+ printk("MTK MSDC device init.\n");
+ reg = sdr_read32((__iomem void *) 0xb0000060) & ~(0x3<<18);
+ reg |= 0x1 << 18;
+ sdr_write32((__iomem void *) 0xb0000060, reg);
+/* end of +++ */
+ ret = platform_driver_register(&mt_msdc_driver);
+ if (ret) {
+ printk(KERN_ERR DRV_NAME ": Can't register driver");
+ return ret;
+ }
+ printk(KERN_INFO DRV_NAME ": MediaTek MT6575 MSDC Driver\n");
+
+ //msdc_debug_proc_init();
+ return 0;
+}
+
+static void __exit mt_msdc_exit(void)
+{
+ platform_driver_unregister(&mt_msdc_driver);
+}
+
+module_init(mt_msdc_init);
+module_exit(mt_msdc_exit);
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MediaTek MT6575 SD/MMC Card Driver");
+MODULE_AUTHOR("Infinity Chen <infinity.chen@mediatek.com>");
+
+EXPORT_SYMBOL(msdc_6575_host);
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