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openwrt-owl/target/linux/s3c24xx/patches-2.6.30/001-merge-openmoko.patch

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bump to 2.6.30-rc6 SVN-Revision: 15918
2009-05-18 17:55:41 +00:00
Merge OpenMoko kernel patches
git://git.openmoko.org/git/kernel.git#(no
lars@lars-laptop Thu May 14 18:33:23 UTC 2009
---
Index: linux-2.6.30-rc6/arch/arm/mach-s3c2410/include/mach/mci.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.30-rc6/arch/arm/mach-s3c2410/include/mach/mci.h 2009-05-18 19:07:48.000000000 +0200
@@ -0,0 +1,13 @@
+#ifndef _ARCH_MCI_H
+#define _ARCH_MCI_H
+
+struct s3c24xx_mci_pdata {
+ unsigned int gpio_detect;
+ unsigned int gpio_wprotect;
+ unsigned long ocr_avail;
+ unsigned int do_dma;
+ void (*set_power)(unsigned char power_mode,
+ unsigned short vdd);
+};
+
+#endif /* _ARCH_NCI_H */
Index: linux-2.6.30-rc6/arch/arm/mach-s3c2410/include/mach/regs-sdi.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/mach-s3c2410/include/mach/regs-sdi.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/mach-s3c2410/include/mach/regs-sdi.h 2009-05-18 19:07:48.000000000 +0200
@@ -30,6 +30,7 @@
#define S3C2410_SDIFSTA (0x38)
#define S3C2410_SDIDATA (0x3C)
+#define S3C2410_SDIDATA_BYTE (0x3C)
#define S3C2410_SDIIMSK (0x40)
#define S3C2440_SDIDATA (0x40)
@@ -37,6 +38,8 @@
#define S3C2440_SDICON_SDRESET (1<<8)
#define S3C2440_SDICON_MMCCLOCK (1<<5)
+#define S3C2440_SDIDATA_BYTE (0x48)
+
#define S3C2410_SDICON_BYTEORDER (1<<4)
#define S3C2410_SDICON_SDIOIRQ (1<<3)
#define S3C2410_SDICON_RWAITEN (1<<2)
Index: linux-2.6.30-rc6/arch/arm/mach-s3c2440/s3c2440.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/mach-s3c2440/s3c2440.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/mach-s3c2440/s3c2440.c 2009-05-18 19:07:48.000000000 +0200
@@ -46,6 +46,9 @@
s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
s3c_device_wdt.resource[1].end = IRQ_S3C2440_WDT;
+ /* make sure SD/MMC driver can distinguish 2440 from 2410 */
+ s3c_device_sdi.name = "s3c2440-sdi";
+
/* register our system device for everything else */
return sysdev_register(&s3c2440_sysdev);
Index: linux-2.6.30-rc6/arch/arm/mach-s3c2442/s3c2442.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/mach-s3c2442/s3c2442.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/mach-s3c2442/s3c2442.c 2009-05-18 19:07:48.000000000 +0200
@@ -21,6 +21,7 @@
#include <plat/s3c2442.h>
#include <plat/cpu.h>
+#include <plat/devs.h>
static struct sys_device s3c2442_sysdev = {
.cls = &s3c2442_sysclass,
@@ -30,5 +31,8 @@
{
printk("S3C2442: Initialising architecture\n");
+ /* make sure SD/MMC driver can distinguish 2440 from 2410 */
+ s3c_device_sdi.name = "s3c2440-sdi";
+
return sysdev_register(&s3c2442_sysdev);
}
Index: linux-2.6.30-rc6/arch/arm/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/Makefile 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/Makefile 2009-05-18 19:07:48.000000000 +0200
@@ -55,7 +55,8 @@
arch-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
endif
arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
-arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
+# We can't load armv4t modules, but still need to assemble some armv4t code to be linked in.
+arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4 -Wa,-march=armv4t
arch-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 -march=armv4
arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/mach/cpu.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/mach/cpu.h 2009-05-18 19:07:48.000000000 +0200
@@ -0,0 +1,165 @@
+/*
+ * arch/arm/plat-s3c/include/mach/cpu.h
+ *
+ * S3C cpu type detection
+ *
+ * Copyright (C) 2008 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * Derived from OMAP cpu.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARCH_S3C_CPU_H
+#define __ASM_ARCH_S3C_CPU_H
+
+extern unsigned int system_rev;
+
+#define S3C_SYSTEM_REV_ATAG (system_rev & 0xffff)
+#define S3C_SYSTEM_REV_CPU (system_rev & 0xffff0000)
+
+/*
+ * cpu_is_s3c24xx(): True for s3c2400, s3c2410, s3c2440 and so on
+ * cpu_is_s3c241x(): True fro s3c2410, s3c2412
+ * cpu_is_s3c244x(): True fro s3c2440, s3c2442, s3c2443
+ * cpu_is_s3c64xx(): True for s3c6400, s3c6410
+ */
+#define GET_S3C_CLASS ((system_rev >> 24) & 0xff)
+
+#define IS_S3C_CLASS(class, id) \
+static inline int is_s3c ##class (void) \
+{ \
+ return (GET_S3C_CLASS == (id)) ? 1 : 0; \
+}
+
+#define GET_S3C_SUBCLASS ((system_rev >> 20) & 0xfff)
+
+#define IS_S3C_SUBCLASS(subclass, id) \
+static inline int is_s3c ##subclass (void) \
+{ \
+ return (GET_S3C_SUBCLASS == (id)) ? 1 : 0; \
+}
+
+IS_S3C_CLASS(24xx, 0x24)
+IS_S3C_CLASS(64xx, 0x64)
+
+IS_S3C_SUBCLASS(241x, 0x241)
+IS_S3C_SUBCLASS(244x, 0x244)
+
+#define cpu_is_s3c24xx() 0
+#define cpu_is_s3c241x() 0
+#define cpu_is_s3c244x() 0
+#define cpu_is_s3c64xx() 0
+
+#if defined(CONFIG_ARCH_S3C2410)
+# undef cpu_is_s3c24xx
+# undef cpu_is_s3c241x
+# undef cpu_is_s3c244x
+# define cpu_is_s3c24xx() is_s3c24xx()
+# define cpu_is_s3c241x() is_s3c241x()
+# define cpu_is_s3c244x() is_s3c244x()
+#endif
+
+#if defined(CONFIG_ARCH_S3C64XX)
+# undef cpu_is_s3c64xx
+# define cpu_is_s3c64xx() is_s3c64xx()
+#endif
+
+/*
+ * Macros to detect individual cpu types.
+ * cpu_is_s3c2410(): True for s3c2410
+ * cpu_is_s3c2440(): True for s3c2440
+ * cpu_is_s3c6400(): True for s3c6400
+ * cpu_is_s3c6410(): True for s3c6410
+ *
+ * Exception:
+ * Store Revision A to 1
+ * s3c2410a -> s3c2411
+ * s3c2440a -> s3c2441
+ */
+
+#define GET_S3C_TYPE ((system_rev >> 16) & 0xffff)
+
+#define IS_S3C_TYPE(type, id) \
+static inline int is_s3c ##type (void) \
+{ \
+ return (GET_S3C_TYPE == (id)) ? 1 : 0; \
+}
+
+IS_S3C_TYPE(2400, 0x2400)
+IS_S3C_TYPE(2410, 0x2410)
+IS_S3C_TYPE(2410a, 0x2411)
+IS_S3C_TYPE(2412, 0x2412)
+IS_S3C_TYPE(2440, 0x2440)
+IS_S3C_TYPE(2440a, 0x2441)
+IS_S3C_TYPE(2442, 0x2442)
+IS_S3C_TYPE(2443, 0x2443)
+IS_S3C_TYPE(6400, 0x6400)
+IS_S3C_TYPE(6410, 0x6410)
+
+#define cpu_is_s3c2400() 0
+#define cpu_is_s3c2410() 0
+#define cpu_is_s3c2410a() 0
+#define cpu_is_s3c2412() 0
+#define cpu_is_s3c2440() 0
+#define cpu_is_s3c2440a() 0
+#define cpu_is_s3c2442() 0
+#define cpu_is_s3c2443() 0
+#define cpu_is_s3c6400() 0
+#define cpu_is_s3c6410() 0
+
+#if defined(CONFIG_ARCH_S3C2410)
+# undef cpu_is_s3c2400
+# define cpu_is_s3c2400() is_s3c2400()
+#endif
+
+#if defined(CONFIG_CPU_S3C2410)
+# undef cpu_is_s3c2410
+# undef cpu_is_s3c2410a
+# define cpu_is_s3c2410() is_s3c2410()
+# define cpu_is_s3c2410a() is_s3c2410a()
+#endif
+
+#if defined(CONFIG_CPU_S3C2412)
+# undef cpu_is_s3c2412
+# define cpu_is_s3c2412() is_s3c2412()
+#endif
+
+#if defined(CONFIG_CPU_S3C2440)
+# undef cpu_is_s3c2440
+# undef cpu_is_s3c2440a
+# define cpu_is_s3c2440() is_s3c2440()
+# define cpu_is_s3c2440a() is_s3c2440a()
+#endif
+
+#if defined(CONFIG_CPU_S3C2442)
+# undef cpu_is_s3c2442
+# define cpu_is_s3c2442() is_s3c2442()
+#endif
+
+#if defined(CONFIG_CPU_S3C2443)
+# undef cpu_is_s3c2443
+# define cpu_is_s3c2443() is_s3c2443()
+#endif
+
+#if defined(CONFIG_ARCH_S3C64XX)
+# undef cpu_is_s3c6400
+# undef cpu_is_s3c6410
+# define cpu_is_s3c6400() is_s3c6400()
+# define cpu_is_s3c6410() is_s3c6410()
+#endif
+
+#endif
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/devs.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/devs.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/devs.h 2009-05-18 19:07:48.000000000 +0200
@@ -16,6 +16,10 @@
unsigned long nr_resources;
};
+struct s3c_plat_otg_data {
+ int phyclk;
+};
+
extern struct s3c24xx_uart_resources s3c2410_uart_resources[];
extern struct s3c24xx_uart_resources s3c64xx_uart_resources[];
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/gpio-core.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/gpio-core.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/gpio-core.h 2009-05-18 19:07:48.000000000 +0200
@@ -20,6 +20,19 @@
* specific code.
*/
+struct s3c_gpio_chip;
+
+/**
+ * struct s3c_gpio_pm - power management (suspend/resume) information
+ * @save: Routine to save the state of the GPIO block
+ * @resume: Routine to resume the GPIO block.
+ */
+struct s3c_gpio_pm {
+ void (*save)(struct s3c_gpio_chip *chip);
+ void (*resume)(struct s3c_gpio_chip *chip);
+};
+
+
struct s3c_gpio_cfg;
/**
@@ -27,6 +40,7 @@
* @chip: The chip structure to be exported via gpiolib.
* @base: The base pointer to the gpio configuration registers.
* @config: special function and pull-resistor control information.
+ * @pm_save: Save information for suspend/resume support.
*
* This wrapper provides the necessary information for the Samsung
* specific gpios being registered with gpiolib.
@@ -34,7 +48,11 @@
struct s3c_gpio_chip {
struct gpio_chip chip;
struct s3c_gpio_cfg *config;
+ struct s3c_gpio_pm *pm;
void __iomem *base;
+#ifdef CONFIG_PM
+ u32 pm_save[4];
+#endif
};
static inline struct s3c_gpio_chip *to_s3c_gpio(struct gpio_chip *gpc)
@@ -75,3 +93,16 @@
static inline void s3c_gpiolib_track(struct s3c_gpio_chip *chip) { }
#endif
+
+#ifdef CONFIG_PM
+extern struct s3c_gpio_pm s3c_gpio_pm_1bit;
+extern struct s3c_gpio_pm s3c_gpio_pm_2bit;
+extern struct s3c_gpio_pm s3c_gpio_pm_4bit;
+#define __gpio_pm(x) x
+#else
+#define s3c_gpio_pm_1bit NULL
+#define s3c_gpio_pm_2bit NULL
+#define s3c_gpio_pm_4bit NULL
+#define __gpio_pm(x) NULL
+
+#endif /* CONFIG_PM */
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/map-base.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/map-base.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/map-base.h 2009-05-18 19:07:48.000000000 +0200
@@ -36,5 +36,7 @@
#define S3C_VA_TIMER S3C_ADDR(0x00300000) /* timer block */
#define S3C_VA_WATCHDOG S3C_ADDR(0x00400000) /* watchdog */
#define S3C_VA_UART S3C_ADDR(0x01000000) /* UART */
+#define S3C_VA_OTG S3C_ADDR(0x03900000) /* OTG */
+#define S3C_VA_OTGSFR S3C_ADDR(0x03a00000) /* OTGSFR */
#endif /* __ASM_PLAT_MAP_H */
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/nand.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/nand.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/nand.h 2009-05-18 19:07:48.000000000 +0200
@@ -21,11 +21,14 @@
* partitions = mtd partition list
*/
+#define S3C2410_NAND_BBT 0x0001
+
struct s3c2410_nand_set {
unsigned int disable_ecc : 1;
int nr_chips;
int nr_partitions;
+ unsigned int flags;
char *name;
int *nr_map;
struct mtd_partition *partitions;
@@ -44,6 +47,9 @@
int nr_sets;
struct s3c2410_nand_set *sets;
+ /* force software_ecc at runtime */
+ int software_ecc;
+
void (*select_chip)(struct s3c2410_nand_set *,
int chip);
};
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/pm.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/pm.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/pm.h 2009-05-18 19:07:48.000000000 +0200
@@ -9,6 +9,8 @@
* published by the Free Software Foundation.
*/
+#include <linux/sysdev.h>
+
/* s3c_pm_init
*
* called from board at initialisation time to setup the power
@@ -44,6 +46,8 @@
extern unsigned long s3c_pm_flags;
+extern unsigned char pm_uart_udivslot; /* true to save UART UDIVSLOT */
+
/* from sleep.S */
extern int s3c_cpu_save(unsigned long *saveblk);
@@ -88,6 +92,7 @@
u32 ufcon;
u32 umcon;
u32 ubrdiv;
+ u32 udivslot;
};
/* helper functions to save/restore lists of registers. */
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/sdhci.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/include/plat/sdhci.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/include/plat/sdhci.h 2009-05-18 19:07:48.000000000 +0200
@@ -29,6 +29,7 @@
* is necessary the controllers and/or GPIO blocks require the
* changing of driver-strength and other controls dependant on
* the card and speed of operation.
+ * sdhci_host: Pointer kept during init, allows presence change notification
*
* Initialisation data specific to either the machine or the platform
* for the device driver to use or call-back when configuring gpio or
@@ -45,8 +46,11 @@
void __iomem *regbase,
struct mmc_ios *ios,
struct mmc_card *card);
+ struct sdhci_host * sdhci_host;
};
+extern void sdhci_s3c_force_presence_change(struct platform_device *pdev);
+
/**
* s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
* @pd: Platform data to register to device.
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/init.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/init.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/init.c 2009-05-18 19:07:48.000000000 +0200
@@ -31,6 +31,34 @@
static struct cpu_table *cpu;
+static void __init set_system_rev(unsigned int idcode)
+{
+ /*
+ * system_rev encoding is as follows
+ * system_rev & 0xff000000 -> S3C Class (24xx/64xx)
+ * system_rev & 0xfff00000 -> S3C Sub Class (241x/244x)
+ * system_rev & 0xffff0000 -> S3C Type (2410/2440/6400/6410)
+ *
+ * Remaining[15:0] are preserved from the value set by ATAG
+ *
+ * Exception:
+ * Store Revision A to 1 such as
+ * s3c2410A to s3c2411
+ * s3c2440A to s3c2441
+ */
+
+ system_rev &= 0xffff;
+ system_rev |= (idcode & 0x0ffff000) << 4;
+
+ if (idcode == 0x32410002 || idcode == 0x32440001)
+ system_rev |= (0x1 << 16);
+ if (idcode == 0x32440aaa /* s3c2442 */
+ || idcode == 0x32440aab) /* s3c2442b */
+ system_rev |= (0x2 << 16);
+ if (idcode == 0x0) /* s3c2400 */
+ system_rev |= (0x2400 << 16);
+}
+
static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode,
struct cpu_table *tab,
unsigned int count)
@@ -53,6 +81,8 @@
panic("Unknown S3C24XX CPU");
}
+ set_system_rev(idcode);
+
printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
if (cpu->map_io == NULL || cpu->init == NULL) {
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/Makefile 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/Makefile 2009-05-18 19:07:48.000000000 +0200
@@ -21,6 +21,7 @@
# PM support
obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_PM) += pm-gpio.o
obj-$(CONFIG_S3C2410_PM_CHECK) += pm-check.o
# devices
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/pm.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c/pm.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/pm.c 2009-05-18 19:07:48.000000000 +0200
@@ -21,11 +21,10 @@
#include <asm/cacheflush.h>
#include <mach/hardware.h>
+#include <mach/map.h>
#include <plat/regs-serial.h>
#include <mach/regs-clock.h>
-#include <mach/regs-gpio.h>
-#include <mach/regs-mem.h>
#include <mach/regs-irq.h>
#include <asm/irq.h>
@@ -70,6 +69,8 @@
/* Save the UART configurations if we are configured for debug. */
+unsigned char pm_uart_udivslot;
+
#ifdef CONFIG_S3C2410_PM_DEBUG
struct pm_uart_save uart_save[CONFIG_SERIAL_SAMSUNG_UARTS];
@@ -83,6 +84,12 @@
save->ufcon = __raw_readl(regs + S3C2410_UFCON);
save->umcon = __raw_readl(regs + S3C2410_UMCON);
save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
+
+ if (pm_uart_udivslot)
+ save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
+
+ S3C_PMDBG("UART[%d]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
+ uart, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
}
static void s3c_pm_save_uarts(void)
@@ -98,11 +105,16 @@
{
void __iomem *regs = S3C_VA_UARTx(uart);
+ s3c_pm_arch_update_uart(regs, save);
+
__raw_writel(save->ulcon, regs + S3C2410_ULCON);
__raw_writel(save->ucon, regs + S3C2410_UCON);
__raw_writel(save->ufcon, regs + S3C2410_UFCON);
__raw_writel(save->umcon, regs + S3C2410_UMCON);
__raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
+
+ if (pm_uart_udivslot)
+ __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
}
static void s3c_pm_restore_uarts(void)
@@ -289,11 +301,14 @@
s3c_pm_arch_stop_clocks();
- /* s3c_cpu_save will also act as our return point from when
- * we resume as it saves its own register state and restores it
- * during the resume. */
-
- s3c_cpu_save(regs_save);
+ /* s3c2410_cpu_save will also act as our return point from when
+ * we resume as it saves its own register state, so use the return
+ * code to differentiate return from save and return from sleep */
+
+ if (s3c_cpu_save(regs_save) == 0) {
+ flush_cache_all();
+ pm_cpu_sleep();
+ }
/* restore the cpu state using the kernel's cpu init code. */
Index: linux-2.6.30-rc6/arch/arm/plat-s3c/pm-gpio.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.30-rc6/arch/arm/plat-s3c/pm-gpio.c 2009-05-18 19:07:48.000000000 +0200
@@ -0,0 +1,378 @@
+/* linux/arch/arm/plat-s3c/pm-gpio.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C series GPIO PM code
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/gpio-core.h>
+#include <plat/pm.h>
+
+/* PM GPIO helpers */
+
+#define OFFS_CON (0x00)
+#define OFFS_DAT (0X04)
+#define OFFS_UP (0X08)
+
+static void s3c_gpio_pm_1bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT);
+}
+
+static void s3c_gpio_pm_1bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon = __raw_readl(base + OFFS_CON);
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpcon = chip->pm_save[0];
+ u32 gps_gpdat = chip->pm_save[1];
+ u32 gpcon;
+
+ /* GPACON only has one bit per control / data and no PULLUPs.
+ * GPACON[x] = 0 => Output, 1 => SFN */
+
+ /* first set all SFN bits to SFN */
+
+ gpcon = old_gpcon | gps_gpcon;
+ __raw_writel(gpcon, base + OFFS_CON);
+
+ /* now set all the other bits */
+
+ __raw_writel(gps_gpdat, base + OFFS_DAT);
+ __raw_writel(gps_gpcon, base + OFFS_CON);
+
+ S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_1bit = {
+ .save = s3c_gpio_pm_1bit_save,
+ .resume = s3c_gpio_pm_1bit_resume,
+};
+
+static void s3c_gpio_pm_2bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT);
+ chip->pm_save[2] = __raw_readl(chip->base + OFFS_UP);
+}
+
+/* Test whether the given masked+shifted bits of an GPIO configuration
+ * are one of the SFN (special function) modes. */
+
+static inline int is_sfn(unsigned long con)
+{
+ return con >= 2;
+}
+
+/* Test if the given masked+shifted GPIO configuration is an input */
+
+static inline int is_in(unsigned long con)
+{
+ return con == 0;
+}
+
+/* Test if the given masked+shifted GPIO configuration is an output */
+
+static inline int is_out(unsigned long con)
+{
+ return con == 1;
+}
+
+/**
+ * s3c_gpio_pm_2bit_resume() - restore the given GPIO bank
+ * @chip: The chip information to resume.
+ *
+ * Restore one of the GPIO banks that was saved during suspend. This is
+ * not as simple as once thought, due to the possibility of glitches
+ * from the order that the CON and DAT registers are set in.
+ *
+ * The three states the pin can be are {IN,OUT,SFN} which gives us 9
+ * combinations of changes to check. Three of these, if the pin stays
+ * in the same configuration can be discounted. This leaves us with
+ * the following:
+ *
+ * { IN => OUT } Change DAT first
+ * { IN => SFN } Change CON first
+ * { OUT => SFN } Change CON first, so new data will not glitch
+ * { OUT => IN } Change CON first, so new data will not glitch
+ * { SFN => IN } Change CON first
+ * { SFN => OUT } Change DAT first, so new data will not glitch [1]
+ *
+ * We do not currently deal with the UP registers as these control
+ * weak resistors, so a small delay in change should not need to bring
+ * these into the calculations.
+ *
+ * [1] this assumes that writing to a pin DAT whilst in SFN will set the
+ * state for when it is next output.
+ */
+static void s3c_gpio_pm_2bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon = __raw_readl(base + OFFS_CON);
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpcon = chip->pm_save[0];
+ u32 gps_gpdat = chip->pm_save[1];
+ u32 gpcon, old, new, mask;
+ u32 change_mask = 0x0;
+ int nr;
+
+ /* restore GPIO pull-up settings */
+ __raw_writel(chip->pm_save[2], base + OFFS_UP);
+
+ /* Create a change_mask of all the items that need to have
+ * their CON value changed before their DAT value, so that
+ * we minimise the work between the two settings.
+ */
+
+ for (nr = 0, mask = 0x03; nr < 32; nr += 2, mask <<= 2) {
+ old = (old_gpcon & mask) >> nr;
+ new = (gps_gpcon & mask) >> nr;
+
+ /* If there is no change, then skip */
+
+ if (old == new)
+ continue;
+
+ /* If both are special function, then skip */
+
+ if (is_sfn(old) && is_sfn(new))
+ continue;
+
+ /* Change is IN => OUT, do not change now */
+
+ if (is_in(old) && is_out(new))
+ continue;
+
+ /* Change is SFN => OUT, do not change now */
+
+ if (is_sfn(old) && is_out(new))
+ continue;
+
+ /* We should now be at the case of IN=>SFN,
+ * OUT=>SFN, OUT=>IN, SFN=>IN. */
+
+ change_mask |= mask;
+ }
+
+
+ /* Write the new CON settings */
+
+ gpcon = old_gpcon & ~change_mask;
+ gpcon |= gps_gpcon & change_mask;
+
+ __raw_writel(gpcon, base + OFFS_CON);
+
+ /* Now change any items that require DAT,CON */
+
+ __raw_writel(gps_gpdat, base + OFFS_DAT);
+ __raw_writel(gps_gpcon, base + OFFS_CON);
+
+ S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_2bit = {
+ .save = s3c_gpio_pm_2bit_save,
+ .resume = s3c_gpio_pm_2bit_resume,
+};
+
+#ifdef CONFIG_ARCH_S3C64XX
+static void s3c_gpio_pm_4bit_save(struct s3c_gpio_chip *chip)
+{
+ chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON);
+ chip->pm_save[2] = __raw_readl(chip->base + OFFS_DAT);
+ chip->pm_save[3] = __raw_readl(chip->base + OFFS_UP);
+
+ if (chip->chip.ngpio > 8)
+ chip->pm_save[0] = __raw_readl(chip->base - 4);
+}
+
+static u32 s3c_gpio_pm_4bit_mask(u32 old_gpcon, u32 gps_gpcon)
+{
+ u32 old, new, mask;
+ u32 change_mask = 0x0;
+ int nr;
+
+ for (nr = 0, mask = 0x0f; nr < 16; nr += 4, mask <<= 4) {
+ old = (old_gpcon & mask) >> nr;
+ new = (gps_gpcon & mask) >> nr;
+
+ /* If there is no change, then skip */
+
+ if (old == new)
+ continue;
+
+ /* If both are special function, then skip */
+
+ if (is_sfn(old) && is_sfn(new))
+ continue;
+
+ /* Change is IN => OUT, do not change now */
+
+ if (is_in(old) && is_out(new))
+ continue;
+
+ /* Change is SFN => OUT, do not change now */
+
+ if (is_sfn(old) && is_out(new))
+ continue;
+
+ /* We should now be at the case of IN=>SFN,
+ * OUT=>SFN, OUT=>IN, SFN=>IN. */
+
+ change_mask |= mask;
+ }
+
+ return change_mask;
+}
+
+static void s3c_gpio_pm_4bit_con(struct s3c_gpio_chip *chip, int index)
+{
+ void __iomem *con = chip->base + (index * 4);
+ u32 old_gpcon = __raw_readl(con);
+ u32 gps_gpcon = chip->pm_save[index + 1];
+ u32 gpcon, mask;
+
+ mask = s3c_gpio_pm_4bit_mask(old_gpcon, gps_gpcon);
+
+ gpcon = old_gpcon & ~mask;
+ gpcon |= gps_gpcon & mask;
+
+ __raw_writel(gpcon, con);
+}
+
+static void s3c_gpio_pm_4bit_resume(struct s3c_gpio_chip *chip)
+{
+ void __iomem *base = chip->base;
+ u32 old_gpcon[2];
+ u32 old_gpdat = __raw_readl(base + OFFS_DAT);
+ u32 gps_gpdat = chip->pm_save[2];
+
+ /* First, modify the CON settings */
+
+ old_gpcon[0] = 0;
+ old_gpcon[1] = __raw_readl(base + OFFS_CON);
+
+ s3c_gpio_pm_4bit_con(chip, 0);
+ if (chip->chip.ngpio > 8) {
+ old_gpcon[0] = __raw_readl(base - 4);
+ s3c_gpio_pm_4bit_con(chip, -1);
+ }
+
+ /* Now change the configurations that require DAT,CON */
+
+ __raw_writel(chip->pm_save[2], base + OFFS_DAT);
+ __raw_writel(chip->pm_save[1], base + OFFS_CON);
+ if (chip->chip.ngpio > 8)
+ __raw_writel(chip->pm_save[0], base - 4);
+
+ __raw_writel(chip->pm_save[2], base + OFFS_DAT);
+ __raw_writel(chip->pm_save[3], base + OFFS_UP);
+
+ if (chip->chip.ngpio > 8) {
+ S3C_PMDBG("%s: CON4 %08x,%08x => %08x,%08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon[0], old_gpcon[1],
+ __raw_readl(base - 4),
+ __raw_readl(base + OFFS_CON),
+ old_gpdat, gps_gpdat);
+ } else
+ S3C_PMDBG("%s: CON4 %08x => %08x, DAT %08x => %08x\n",
+ chip->chip.label, old_gpcon[1],
+ __raw_readl(base + OFFS_CON),
+ old_gpdat, gps_gpdat);
+}
+
+struct s3c_gpio_pm s3c_gpio_pm_4bit = {
+ .save = s3c_gpio_pm_4bit_save,
+ .resume = s3c_gpio_pm_4bit_resume,
+};
+#endif /* CONFIG_ARCH_S3C64XX */
+
+/**
+ * s3c_pm_save_gpio() - save gpio chip data for suspend
+ * @ourchip: The chip for suspend.
+ */
+static void s3c_pm_save_gpio(struct s3c_gpio_chip *ourchip)
+{
+ struct s3c_gpio_pm *pm = ourchip->pm;
+
+ if (pm == NULL || pm->save == NULL)
+ S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label);
+ else
+ pm->save(ourchip);
+}
+
+/**
+ * s3c_pm_save_gpios() - Save the state of the GPIO banks.
+ *
+ * For all the GPIO banks, save the state of each one ready for going
+ * into a suspend mode.
+ */
+void s3c_pm_save_gpios(void)
+{
+ struct s3c_gpio_chip *ourchip;
+ unsigned int gpio_nr;
+
+ for (gpio_nr = 0; gpio_nr < S3C_GPIO_END; gpio_nr++) {
+ ourchip = s3c_gpiolib_getchip(gpio_nr);
+ if (!ourchip)
+ continue;
+
+ s3c_pm_save_gpio(ourchip);
+
+ S3C_PMDBG("%s: save %08x,%08x,%08x,%08x\n",
+ ourchip->chip.label,
+ ourchip->pm_save[0],
+ ourchip->pm_save[1],
+ ourchip->pm_save[2],
+ ourchip->pm_save[3]);
+
+ gpio_nr += ourchip->chip.ngpio;
+ gpio_nr += CONFIG_S3C_GPIO_SPACE;
+ }
+}
+
+/**
+ * s3c_pm_resume_gpio() - restore gpio chip data after suspend
+ * @ourchip: The suspended chip.
+ */
+static void s3c_pm_resume_gpio(struct s3c_gpio_chip *ourchip)
+{
+ struct s3c_gpio_pm *pm = ourchip->pm;
+
+ if (pm == NULL || pm->resume == NULL)
+ S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label);
+ else
+ pm->resume(ourchip);
+}
+
+void s3c_pm_restore_gpios(void)
+{
+ struct s3c_gpio_chip *ourchip;
+ unsigned int gpio_nr;
+
+ for (gpio_nr = 0; gpio_nr < S3C_GPIO_END; gpio_nr++) {
+ ourchip = s3c_gpiolib_getchip(gpio_nr);
+ if (!ourchip)
+ continue;
+
+ s3c_pm_resume_gpio(ourchip);
+
+ gpio_nr += ourchip->chip.ngpio;
+ gpio_nr += CONFIG_S3C_GPIO_SPACE;
+ }
+}
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/clock-dclk.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/clock-dclk.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/clock-dclk.c 2009-05-18 19:07:48.000000000 +0200
@@ -18,6 +18,7 @@
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
+#include <mach/hardware.h>
#include <plat/clock.h>
#include <plat/cpu.h>
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/cpu.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/cpu.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/cpu.c 2009-05-18 19:07:48.000000000 +0200
@@ -61,6 +61,7 @@
static const char name_s3c2412[] = "S3C2412";
static const char name_s3c2440[] = "S3C2440";
static const char name_s3c2442[] = "S3C2442";
+static const char name_s3c2442b[] = "S3C2442B";
static const char name_s3c2443[] = "S3C2443";
static const char name_s3c2410a[] = "S3C2410A";
static const char name_s3c2440a[] = "S3C2440A";
@@ -112,6 +113,15 @@
.name = name_s3c2442
},
{
+ .idcode = 0x32440aab,
+ .idmask = 0xffffffff,
+ .map_io = s3c244x_map_io,
+ .init_clocks = s3c244x_init_clocks,
+ .init_uarts = s3c244x_init_uarts,
+ .init = s3c2442_init,
+ .name = name_s3c2442b
+ },
+ {
.idcode = 0x32412001,
.idmask = 0xffffffff,
.map_io = s3c2412_map_io,
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/gpiolib.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/gpiolib.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/gpiolib.c 2009-05-18 19:07:48.000000000 +0200
@@ -19,9 +19,10 @@
#include <linux/io.h>
#include <linux/gpio.h>
-#include <mach/gpio-core.h>
+#include <plat/gpio-core.h>
#include <mach/hardware.h>
#include <asm/irq.h>
+#include <plat/pm.h>
#include <mach/regs-gpio.h>
@@ -78,6 +79,7 @@
struct s3c_gpio_chip s3c24xx_gpios[] = {
[0] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
+ .pm = __gpio_pm(&s3c_gpio_pm_1bit),
.chip = {
.base = S3C2410_GPA0,
.owner = THIS_MODULE,
@@ -89,6 +91,7 @@
},
[1] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPB0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPB0,
.owner = THIS_MODULE,
@@ -98,6 +101,7 @@
},
[2] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPC0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPC0,
.owner = THIS_MODULE,
@@ -107,6 +111,7 @@
},
[3] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPD0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPD0,
.owner = THIS_MODULE,
@@ -116,6 +121,7 @@
},
[4] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPE0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPE0,
.label = "GPIOE",
@@ -125,6 +131,7 @@
},
[5] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPF0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPF0,
.owner = THIS_MODULE,
@@ -135,12 +142,23 @@
},
[6] = {
.base = S3C24XX_GPIO_BASE(S3C2410_GPG0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
.chip = {
.base = S3C2410_GPG0,
.owner = THIS_MODULE,
.label = "GPIOG",
- .ngpio = 10,
.to_irq = s3c24xx_gpiolib_bankg_toirq,
+ .ngpio = 16,
+ },
+ },
+ [7] = {
+ .base = S3C24XX_GPIO_BASE(S3C2410_GPH0),
+ .pm = __gpio_pm(&s3c_gpio_pm_2bit),
+ .chip = {
+ .base = S3C2410_GPH0,
+ .owner = THIS_MODULE,
+ .label = "GPIOH",
+ .ngpio = 11,
},
},
};
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/include/plat/pm-core.h
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/include/plat/pm-core.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/include/plat/pm-core.h 2009-05-18 19:07:48.000000000 +0200
@@ -57,3 +57,8 @@
s3c_pm_show_resume_irqs(IRQ_EINT4-4, __raw_readl(S3C2410_EINTPEND),
s3c_irqwake_eintmask);
}
+
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+ struct pm_uart_save *save)
+{
+}
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/irq-pm.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/irq-pm.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/irq-pm.c 2009-05-18 19:07:48.000000000 +0200
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/sysdev.h>
+#include <linux/irq.h>
#include <plat/cpu.h>
#include <plat/pm.h>
@@ -80,7 +81,9 @@
int s3c24xx_irq_resume(struct sys_device *dev)
{
- unsigned int i;
+ unsigned int i, irq;
+ unsigned long eintpnd;
+ struct irq_desc *desc;
for (i = 0; i < ARRAY_SIZE(save_extint); i++)
__raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
@@ -91,5 +94,25 @@
s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
__raw_writel(save_eintmask, S3C24XX_EINTMASK);
+ /*
+ * ACK those interrupts which are now masked and pending.
+ * Level interrupts if not ACKed here, create an interrupt storm
+ * because they are not handled at all.
+ */
+
+ eintpnd = __raw_readl(S3C24XX_EINTPEND);
+
+ eintpnd &= save_eintmask;
+ eintpnd &= ~0xff; /* ignore lower irqs */
+
+ while (eintpnd) {
+ irq = __ffs(eintpnd);
+ eintpnd &= ~(1 << irq);
+
+ irq += (IRQ_EINT4 - 4);
+ desc = irq_to_desc(irq);
+ desc->chip->ack(irq);
+ }
+
return 0;
}
Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/pm.c
===================================================================
--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/pm.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/pm.c 2009-05-18 19:07:48.000000000 +0200
@@ -39,6 +39,7 @@
#include <mach/regs-gpio.h>
#include <mach/regs-mem.h>
#include <mach/regs-irq.h>
+#include <mach/hardware.h>
#include <asm/mach/time.h>
@@ -75,43 +76,10 @@
SAVE_ITEM(S3C2410_CLKSLOW),
};
-static struct gpio_sleep {
- void __iomem *base;
- unsigned int gpcon;
- unsigned int gpdat;
- unsigned int gpup;
-} gpio_save[] = {
- [0] = {
- .base = S3C2410_GPACON,
- },
- [1] = {
- .base = S3C2410_GPBCON,
- },
- [2] = {
- .base = S3C2410_GPCCON,
- },
- [3] = {
- .base = S3C2410_GPDCON,
- },
- [4] = {
- .base = S3C2410_GPECON,
- },
- [5] = {
- .base = S3C2410_GPFCON,
- },
- [6] = {
- .base = S3C2410_GPGCON,
- },
- [7] = {
- .base = S3C2410_GPHCON,
- },
-};
-
static struct sleep_save misc_save[] = {
SAVE_ITEM(S3C2410_DCLKCON),
};
-
/* s3c_pm_check_resume_pin
*
* check to see if the pin is configured correctly for sleep mode, and
@@ -165,186 +133,6 @@
}
}
-/* offsets for CON/DAT/UP registers */
-
-#define OFFS_CON (S3C2410_GPACON - S3C2410_GPACON)
-#define OFFS_DAT (S3C2410_GPADAT - S3C2410_GPACON)
-#define OFFS_UP (S3C2410_GPBUP - S3C2410_GPBCON)
-
-/* s3c_pm_save_gpios()
- *
- * Save the state of the GPIOs
- */
-
-void s3c_pm_save_gpios(void)
-{
- struct gpio_sleep *gps = gpio_save;
- unsigned int gpio;
-
- for (gpio = 0; gpio < ARRAY_SIZE(gpio_save); gpio++, gps++) {
- void __iomem *base = gps->base;
-
- gps->gpcon = __raw_readl(base + OFFS_CON);
- gps->gpdat = __raw_readl(base + OFFS_DAT);
-
- if (gpio > 0)
- gps->gpup = __raw_readl(base + OFFS_UP);
-
- }
-}
-
-/* Test whether the given masked+shifted bits of an GPIO configuration
- * are one of the SFN (special function) modes. */
-
-static inline int is_sfn(unsigned long con)
-{
- return (con == 2 || con == 3);
-}
-
-/* Test if the given masked+shifted GPIO configuration is an input */
-
-static inline int is_in(unsigned long con)
-{
- return con == 0;
-}
-
-/* Test if the given masked+shifted GPIO configuration is an output */
-
-static inline int is_out(unsigned long con)
-{
- return con == 1;
-}
-
-/**
- * s3c2410_pm_restore_gpio() - restore the given GPIO bank
- * @index: The number of the GPIO bank being resumed.
- * @gps: The sleep confgiuration for the bank.
- *
- * Restore one of the GPIO banks that was saved during suspend. This is
- * not as simple as once thought, due to the possibility of glitches
- * from the order that the CON and DAT registers are set in.
- *
- * The three states the pin can be are {IN,OUT,SFN} which gives us 9
- * combinations of changes to check. Three of these, if the pin stays
- * in the same configuration can be discounted. This leaves us with
- * the following:
- *
- * { IN => OUT } Change DAT first
- * { IN => SFN } Change CON first
- * { OUT => SFN } Change CON first, so new data will not glitch
- * { OUT => IN } Change CON first, so new data will not glitch
- * { SFN => IN } Change CON first
- * { SFN => OUT } Change DAT first, so new data will not glitch [1]
- *
- * We do not currently deal with the UP registers as these control
- * weak resistors, so a small delay in change should not need to bring
- * these into the calculations.
- *
- * [1] this assumes that writing to a pin DAT whilst in SFN will set the
- * state for when it is next output.
- */
-
-static void s3c2410_pm_restore_gpio(int index, struct gpio_sleep *gps)
-{
- void __iomem *base = gps->base;
- unsigned long gps_gpcon = gps->gpcon;
- unsigned long gps_gpdat = gps->gpdat;
- unsigned long old_gpcon;
- unsigned long old_gpdat;
- unsigned long old_gpup = 0x0;
- unsigned long gpcon;
- int nr;
-
- old_gpcon = __raw_readl(base + OFFS_CON);
- old_gpdat = __raw_readl(base + OFFS_DAT);
-
- if (base == S3C2410_GPACON) {
- /* GPACON only has one bit per control / data and no PULLUPs.
- * GPACON[x] = 0 => Output, 1 => SFN */
-
- /* first set all SFN bits to SFN */
-
- gpcon = old_gpcon | gps->gpcon;
- __raw_writel(gpcon, base + OFFS_CON);
-
- /* now set all the other bits */
-
- __raw_writel(gps_gpdat, base + OFFS_DAT);
- __raw_writel(gps_gpcon, base + OFFS_CON);
- } else {
- unsigned long old, new, mask;
- unsigned long change_mask = 0x0;
-
- old_gpup = __raw_readl(base + OFFS_UP);
-
- /* Create a change_mask of all the items that need to have
- * their CON value changed before their DAT value, so that
- * we minimise the work between the two settings.
- */
-
- for (nr = 0, mask = 0x03; nr < 32; nr += 2, mask <<= 2) {
- old = (old_gpcon & mask) >> nr;
- new = (gps_gpcon & mask) >> nr;
-
- /* If there is no change, then skip */
-
- if (old == new)
- continue;
-
- /* If both are special function, then skip */
-
- if (is_sfn(old) && is_sfn(new))
- continue;
-
- /* Change is IN => OUT, do not change now */
-
- if (is_in(old) && is_out(new))
- continue;
-
- /* Change is SFN => OUT, do not change now */
-
- if (is_sfn(old) && is_out(new))
- continue;
-
- /* We should now be at the case of IN=>SFN,
- * OUT=>SFN, OUT=>IN, SFN=>IN. */
-
- change_mask |= mask;
- }
-
- /* Write the new CON settings */
-
- gpcon = old_gpcon & ~change_mask;
- gpcon |= gps_gpcon & change_mask;
-
- __raw_writel(gpcon, base + OFFS_CON);
-
- /* Now change any items that require DAT,CON */
-
- __raw_writel(gps_gpdat, base + OFFS_DAT);
- __raw_writel(gps_gpcon, base + OFFS_CON);
- __raw_writel(gps->gpup, base + OFFS_UP);
- }
-
- S3C_PMDBG("GPIO[%d] CON %08lx => %08lx, DAT %08lx => %08lx\n",
- index, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat);
-}
-
-
-/** s3c2410_pm_restore_gpios()
- *
- * Restore the state of the GPIOs
- */
-
-void s3c_pm_restore_gpios(void)
-{
- struct gpio_sleep *gps = gpio_save;
- int gpio;
-
- for (gpio = 0; gpio < ARRAY_SIZE(gpio_save); gpio++, gps++) {
- s3c2410_pm_restore_gpio(gpio, gps);
- }
-}
void s3c_pm_restore_core(void)
{
Index: linux-2.6.30-rc6/drivers/mmc/host/Kconfig
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mmc/host/Kconfig 2009-05-18 19:07:38.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mmc/host/Kconfig 2009-05-18 19:07:48.000000000 +0200
@@ -37,13 +37,6 @@
If unsure, say N.
-config MMC_SDHCI_IO_ACCESSORS
- bool
- depends on MMC_SDHCI
- help
- This is silent Kconfig symbol that is selected by the drivers that
- need to overwrite SDHCI IO memory accessors.
-
config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
@@ -55,6 +48,18 @@
If unsure, say N.
+config MMC_SDHCI_S3C
+ tristate "SDHCI support on Samsung S3C SoC"
+ depends on MMC_SDHCI && PLAT_S3C24XX
+ help
+ This selects the Secure Digital Host Controller Interface (SDHCI)
+ often referrered to as the HSMMC block in some of the Samsung S3C
+ range of SoC.
+
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
+
config MMC_RICOH_MMC
tristate "Ricoh MMC Controller Disabler (EXPERIMENTAL)"
depends on MMC_SDHCI_PCI
@@ -72,17 +77,6 @@
If unsure, say Y.
-config MMC_SDHCI_OF
- tristate "SDHCI support on OpenFirmware platforms"
- depends on MMC_SDHCI && PPC_OF
- select MMC_SDHCI_IO_ACCESSORS
- help
- This selects the OF support for Secure Digital Host Controller
- Interfaces. So far, only the Freescale eSDHC controller is known
- to exist on OF platforms.
-
- If unsure, say N.
-
config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP
@@ -163,16 +157,6 @@
If unsure, say N.
-config MMC_MXC
- tristate "Freescale i.MX2/3 Multimedia Card Interface support"
- depends on ARCH_MXC
- help
- This selects the Freescale i.MX2/3 Multimedia card Interface.
- If you have a i.MX platform with a Multimedia Card slot,
- say Y or M here.
-
- If unsure, say N.
-
config MMC_TIFM_SD
tristate "TI Flash Media MMC/SD Interface support (EXPERIMENTAL)"
depends on EXPERIMENTAL && PCI
Index: linux-2.6.30-rc6/drivers/mmc/host/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mmc/host/Makefile 2009-05-18 19:07:38.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mmc/host/Makefile 2009-05-18 19:07:48.000000000 +0200
@@ -9,11 +9,10 @@
obj-$(CONFIG_MMC_ARMMMCI) += mmci.o
obj-$(CONFIG_MMC_PXA) += pxamci.o
obj-$(CONFIG_MMC_IMX) += imxmmc.o
-obj-$(CONFIG_MMC_MXC) += mxcmmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
+obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o
-obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
@@ -21,7 +20,6 @@
obj-$(CONFIG_MMC_AT91) += at91_mci.o
obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
-obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o
obj-$(CONFIG_MMC_SPI) += mmc_spi.o
ifeq ($(CONFIG_OF),y)
obj-$(CONFIG_MMC_SPI) += of_mmc_spi.o
Index: linux-2.6.30-rc6/drivers/mmc/host/s3cmci.c
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mmc/host/s3cmci.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mmc/host/s3cmci.c 2009-05-18 19:07:48.000000000 +0200
@@ -2,6 +2,7 @@
* linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
*
* Copyright (C) 2004-2006 maintech GmbH, Thomas Kleffel <tk@maintech.de>
+ * Copyright (C) 2007 Harald Welte <laforge@gnumonks.org>
*
* Current driver maintained by Ben Dooks and Simtec Electronics
* Copyright (C) 2008 Simtec Electronics <ben-linux@fluff.org>
@@ -24,9 +25,18 @@
#include <mach/regs-sdi.h>
#include <mach/regs-gpio.h>
+#include <mach/hardware.h>
#include <plat/mci.h>
+#include <asm/dma.h>
+#include <asm/dma-mapping.h>
+
+#include <asm/io.h>
+#include <mach/regs-gpio.h>
+#include <mach/mci.h>
+#include <mach/dma.h>
+
#include "s3cmci.h"
#define DRIVER_NAME "s3c-mci"
@@ -47,6 +57,9 @@
static const int dbgmap_info = dbg_info | dbg_conf;
static const int dbgmap_debug = dbg_err | dbg_debug;
+static int f_max = -1; /* override maximum frequency limit */
+static int persist; /* keep interface alive across suspend/resume */
+
#define dbg(host, channels, args...) \
do { \
if (dbgmap_err & channels) \
@@ -280,8 +293,11 @@
* an even multiple of 4. */
if (fifo >= host->pio_bytes)
fifo = host->pio_bytes;
- else
+ else {
fifo -= fifo & 3;
+ if (!fifo)
+ break;
+ }
host->pio_bytes -= fifo;
host->pio_count += fifo;
@@ -329,7 +345,7 @@
to_ptr = host->base + host->sdidata;
- while ((fifo = fifo_free(host)) > 3) {
+ while ((fifo = fifo_free(host))) {
if (!host->pio_bytes) {
res = get_data_buffer(host, &host->pio_bytes,
&host->pio_ptr);
@@ -353,8 +369,11 @@
* words, so round down to an even multiple of 4. */
if (fifo >= host->pio_bytes)
fifo = host->pio_bytes;
- else
+ else {
fifo -= fifo & 3;
+ if (!fifo)
+ break;
+ }
host->pio_bytes -= fifo;
host->pio_count += fifo;
@@ -373,7 +392,6 @@
{
struct s3cmci_host *host = (struct s3cmci_host *) data;
-
disable_irq(host->irq);
if (host->pio_active == XFER_WRITE)
@@ -614,7 +632,6 @@
spin_unlock_irqrestore(&host->complete_lock, iflags);
return IRQ_HANDLED;
-
}
/*
@@ -789,11 +806,11 @@
last_source = source;
- s3c2410_dma_devconfig(host->dma, source, 3,
+ s3c2410_dma_devconfig(host->dma, source,
host->mem->start + host->sdidata);
if (!setup_ok) {
- s3c2410_dma_config(host->dma, 4, 0);
+ s3c2410_dma_config(host->dma, 4);
s3c2410_dma_set_buffdone_fn(host->dma,
s3cmci_dma_done_callback);
s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART);
@@ -1026,6 +1043,7 @@
dbg(host, dbg_err, "data prepare error %d\n", res);
cmd->error = res;
cmd->data->error = res;
+ cmd->data->error = -EIO;
mmc_request_done(mmc, mrq);
return;
@@ -1263,10 +1281,8 @@
host->is2440 = is2440;
host->pdata = pdev->dev.platform_data;
- if (!host->pdata) {
- pdev->dev.platform_data = &s3cmci_def_pdata;
+ if (!host->pdata)
host->pdata = &s3cmci_def_pdata;
- }
spin_lock_init(&host->complete_lock);
tasklet_init(&host->pio_tasklet, pio_tasklet, (unsigned long) host);
@@ -1379,6 +1395,18 @@
mmc->f_min = host->clk_rate / (host->clk_div * 256);
mmc->f_max = host->clk_rate / host->clk_div;
+ if (f_max >= 0) {
+ unsigned f = f_max;
+
+ if (f < mmc->f_min)
+ f = mmc->f_min;
+ if (mmc->f_max > f) {
+ dev_info(&pdev->dev, "f_max lowered from %u to %u Hz\n",
+ mmc->f_max, f);
+ mmc->f_max = f;
+ }
+ }
+
if (host->pdata->ocr_avail)
mmc->ocr_avail = host->pdata->ocr_avail;
@@ -1491,18 +1519,60 @@
#ifdef CONFIG_PM
+static int save_regs(struct mmc_host *mmc)
+{
+ struct s3cmci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ unsigned from;
+ u32 *to = host->saved;
+
+ mmc_flush_scheduled_work();
+
+ local_irq_save(flags);
+ for (from = S3C2410_SDICON; from != S3C2410_SDIIMSK+4; from += 4)
+ if (from != host->sdidata)
+ *to++ = readl(host->base + from);
+ BUG_ON(to-host->saved != ARRAY_SIZE(host->saved));
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static int restore_regs(struct mmc_host *mmc)
+{
+ struct s3cmci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ unsigned to;
+ u32 *from = host->saved;
+
+ /*
+ * Before we begin with the necromancy, make sure we don't
+ * inadvertently start something we'll regret microseconds later.
+ */
+ from[S3C2410_SDICMDCON - S3C2410_SDICON] = 0;
+
+ local_irq_save(flags);
+ for (to = S3C2410_SDICON; to != S3C2410_SDIIMSK+4; to += 4)
+ if (to != host->sdidata)
+ writel(*from++, host->base + to);
+ BUG_ON(from-host->saved != ARRAY_SIZE(host->saved));
+ local_irq_restore(flags);
+
+ return 0;
+}
+
static int s3cmci_suspend(struct platform_device *dev, pm_message_t state)
{
struct mmc_host *mmc = platform_get_drvdata(dev);
- return mmc_suspend_host(mmc, state);
+ return persist ? save_regs(mmc) : mmc_suspend_host(mmc, state);
}
static int s3cmci_resume(struct platform_device *dev)
{
struct mmc_host *mmc = platform_get_drvdata(dev);
- return mmc_resume_host(mmc);
+ return persist ? restore_regs(mmc) : mmc_resume_host(mmc);
}
#else /* CONFIG_PM */
@@ -1560,9 +1630,13 @@
module_init(s3cmci_init);
module_exit(s3cmci_exit);
+module_param(f_max, int, 0644);
+module_param(persist, int, 0644);
+
MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Thomas Kleffel <tk@maintech.de>, Ben Dooks <ben-linux@fluff.org>");
MODULE_ALIAS("platform:s3c2410-sdi");
MODULE_ALIAS("platform:s3c2412-sdi");
MODULE_ALIAS("platform:s3c2440-sdi");
+
Index: linux-2.6.30-rc6/drivers/mmc/host/s3cmci.h
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mmc/host/s3cmci.h 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mmc/host/s3cmci.h 2009-05-18 19:07:48.000000000 +0200
@@ -8,6 +8,10 @@
* published by the Free Software Foundation.
*/
+
+#include <mach/regs-sdi.h>
+#include <linux/regulator/consumer.h>
+
/* FIXME: DMA Resource management ?! */
#define S3CMCI_DMA 0
@@ -68,7 +72,16 @@
unsigned int ccnt, dcnt;
struct tasklet_struct pio_tasklet;
+ /*
+ * Here's where we save the registers during suspend. Note that we skip
+ * SDIDATA, which is at different positions on 2410 and 2440, so
+ * there's no "+1" in the array size.
+ */
+ u32 saved[(S3C2410_SDIIMSK-S3C2410_SDICON)/4];
+
#ifdef CONFIG_CPU_FREQ
struct notifier_block freq_transition;
#endif
+
+ struct regulator *regulator;
};
Index: linux-2.6.30-rc6/drivers/mmc/host/sdhci-s3c.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.30-rc6/drivers/mmc/host/sdhci-s3c.c 2009-05-18 19:07:48.000000000 +0200
@@ -0,0 +1,419 @@
+/* linux/drivers/mmc/host/sdhci-s3c.c
+ *
+ * Copyright 2008 Openmoko Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * SDHCI (HSMMC) support for Samsung SoC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <linux/mmc/host.h>
+
+#include <plat/regs-sdhci.h>
+#include <plat/sdhci.h>
+
+#include "sdhci.h"
+
+#define MAX_BUS_CLK (4)
+
+struct sdhci_s3c {
+ struct sdhci_host *host;
+ struct platform_device *pdev;
+ struct resource *ioarea;
+ struct s3c_sdhci_platdata *pdata;
+ unsigned int cur_clk;
+
+ struct clk *clk_io; /* clock for io bus */
+ struct clk *clk_bus[MAX_BUS_CLK];
+};
+
+static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
+{
+ return sdhci_priv(host);
+}
+
+static u32 get_curclk(u32 ctrl2)
+{
+ ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ ctrl2 >>= S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+
+ return ctrl2;
+}
+
+static void sdhci_s3c_check_sclk(struct sdhci_host *host)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+
+ if (get_curclk(tmp) != ourhost->cur_clk) {
+ dev_dbg(&ourhost->pdev->dev, "restored ctrl2 clock setting\n");
+
+ tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+ writel(tmp, host->ioaddr + 0x80);
+ }
+}
+
+static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ struct clk *busclk;
+ unsigned int rate, max;
+ int clk;
+
+ /* note, a reset will reset the clock source */
+
+ sdhci_s3c_check_sclk(host);
+
+ for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
+ busclk = ourhost->clk_bus[clk];
+ if (!busclk)
+ continue;
+
+ rate = clk_get_rate(busclk);
+ if (rate > max)
+ max = rate;
+ }
+
+ return max;
+}
+
+static unsigned int sdhci_s3c_get_timeout_clk(struct sdhci_host *host)
+{
+ return sdhci_s3c_get_max_clk(host) / 1000000;
+}
+
+static void sdhci_s3c_set_ios(struct sdhci_host *host,
+ struct mmc_ios *ios)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ struct s3c_sdhci_platdata *pdata = ourhost->pdata;
+ int width;
+
+ sdhci_s3c_check_sclk(host);
+
+ if (ios->power_mode != MMC_POWER_OFF) {
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_4:
+ width = 4;
+ break;
+ case MMC_BUS_WIDTH_1:
+ width = 1;
+ break;
+ default:
+ BUG();
+ }
+
+ if (pdata->cfg_gpio)
+ pdata->cfg_gpio(ourhost->pdev, width);
+ }
+
+ if (pdata->cfg_card)
+ pdata->cfg_card(ourhost->pdev, host->ioaddr,
+ ios, host->mmc->card);
+}
+
+static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
+ unsigned int src,
+ unsigned int wanted)
+{
+ unsigned long rate;
+ struct clk *clksrc = ourhost->clk_bus[src];
+ int div;
+
+ if (!clksrc)
+ return UINT_MAX;
+
+ rate = clk_get_rate(clksrc);
+
+ for (div = 1; div < 256; div *= 2) {
+ if ((rate / div) <= wanted)
+ break;
+ }
+
+ dev_dbg(&ourhost->pdev->dev, "clk %d: rate %ld, want %d, got %ld\n",
+ src, rate, wanted, rate / div);
+
+ return (wanted - (rate / div));
+}
+
+static void sdhci_s3c_change_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ unsigned int best = UINT_MAX;
+ unsigned int delta;
+ int best_src = 0;
+ int src;
+ u32 ctrl;
+
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ delta = sdhci_s3c_consider_clock(ourhost, src, clock);
+ if (delta < best) {
+ best = delta;
+ best_src = src;
+ }
+ }
+
+ dev_dbg(&ourhost->pdev->dev,
+ "selected source %d, clock %d, delta %d\n",
+ best_src, clock, best);
+
+ /* turn clock off to card before changing clock source */
+ writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
+
+ /* select the new clock source */
+
+ if (ourhost->cur_clk != best_src) {
+ struct clk *clk = ourhost->clk_bus[best_src];
+
+ ourhost->cur_clk = best_src;
+ host->max_clk = clk_get_rate(clk);
+ host->timeout_clk = host->max_clk / 1000000;
+
+ ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+ ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+ writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
+ }
+
+ sdhci_change_clock(host, clock);
+}
+
+static struct sdhci_ops sdhci_s3c_ops = {
+ .get_max_clock = sdhci_s3c_get_max_clk,
+ .get_timeout_clock = sdhci_s3c_get_timeout_clk,
+ .change_clock = sdhci_s3c_change_clock,
+ .set_ios = sdhci_s3c_set_ios,
+};
+
+/*
+ * call this when you need sd stack to recognize insertion or removal of card
+ * that can't be told by SDHCI regs
+ */
+
+void sdhci_s3c_force_presence_change(struct platform_device *pdev)
+{
+ struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
+
+ dev_info(&pdev->dev, "sdhci_s3c_force_presence_change called\n");
+ mmc_detect_change(pdata->sdhci_host->mmc, msecs_to_jiffies(200));
+}
+EXPORT_SYMBOL_GPL(sdhci_s3c_force_presence_change);
+
+
+static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
+{
+ struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct sdhci_host *host;
+ struct sdhci_s3c *sc;
+ struct resource *res;
+ int ret, irq, ptr, clks;
+
+ if (!pdata) {
+ dev_err(dev, "no device data specified\n");
+ return -ENOENT;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "no irq specified\n");
+ return irq;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "no memory specified\n");
+ return -ENOENT;
+ }
+
+ host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
+ if (IS_ERR(host)) {
+ dev_err(dev, "sdhci_alloc_host() failed\n");
+ return PTR_ERR(host);
+ }
+
+ pdata->sdhci_host = host;
+
+ sc = sdhci_priv(host);
+
+ sc->host = host;
+ sc->pdev = pdev;
+ sc->pdata = pdata;
+
+ platform_set_drvdata(pdev, host);
+
+ sc->clk_io = clk_get(dev, "hsmmc");
+ if (IS_ERR(sc->clk_io)) {
+ dev_err(dev, "failed to get io clock\n");
+ ret = PTR_ERR(sc->clk_io);
+ goto err_io_clk;
+ }
+
+ /* enable the local io clock and keep it running for the moment. */
+ clk_enable(sc->clk_io);
+
+ for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
+ struct clk *clk;
+ char *name = pdata->clocks[ptr];
+
+ if (name == NULL)
+ continue;
+
+ clk = clk_get(dev, name);
+ if (IS_ERR(clk)) {
+ dev_err(dev, "failed to get clock %s\n", name);
+ continue;
+ }
+
+ clks++;
+ sc->clk_bus[ptr] = clk;
+ clk_enable(clk);
+
+ dev_info(dev, "clock source %d: %s (%ld Hz)\n",
+ ptr, name, clk_get_rate(clk));
+ }
+
+ if (clks == 0) {
+ dev_err(dev, "failed to find any bus clocks\n");
+ ret = -ENOENT;
+ goto err_no_busclks;
+ }
+
+ sc->ioarea = request_mem_region(res->start, resource_size(res),
+ mmc_hostname(host->mmc));
+ if (!sc->ioarea) {
+ dev_err(dev, "failed to reserve register area\n");
+ ret = -ENXIO;
+ goto err_req_regs;
+ }
+
+ host->ioaddr = ioremap_nocache(res->start, resource_size(res));
+ if (!host->ioaddr) {
+ dev_err(dev, "failed to map registers\n");
+ ret = -ENXIO;
+ goto err_req_regs;
+ }
+
+ /* Ensure we have minimal gpio selected CMD/CLK/Detect */
+ if (pdata->cfg_gpio)
+ pdata->cfg_gpio(pdev, 0);
+
+ sdhci_s3c_check_sclk(host);
+
+ host->hw_name = "samsung-hsmmc";
+ host->ops = &sdhci_s3c_ops;
+ host->quirks = 0;
+ host->irq = irq;
+
+ /* Setup quirks for the controller */
+
+ /* Currently with ADMA enabled we are getting some length
+ * interrupts that are not being dealt with, do disable
+ * ADMA until this is sorted out. */
+ host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
+ host->quirks |= SDHCI_QUIRK_32BIT_ADMA_SIZE;
+
+ /* It seems we do not get an DATA transfer complete on non-busy
+ * transfers, not sure if this is a problem with this specific
+ * SDHCI block, or a missing configuration that needs to be set. */
+ host->quirks |= SDHCI_QUIRK_NO_TCIRQ_ON_NOT_BUSY;
+
+ host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
+ SDHCI_QUIRK_32BIT_DMA_SIZE);
+
+ ret = sdhci_add_host(host);
+ if (ret) {
+ dev_err(dev, "sdhci_add_host() failed\n");
+ goto err_add_host;
+ }
+
+ return 0;
+
+ err_add_host:
+ release_resource(sc->ioarea);
+ kfree(sc->ioarea);
+
+ err_req_regs:
+ for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
+ clk_disable(sc->clk_bus[ptr]);
+ clk_put(sc->clk_bus[ptr]);
+ }
+
+ err_no_busclks:
+ clk_disable(sc->clk_io);
+ clk_put(sc->clk_io);
+
+ err_io_clk:
+ sdhci_free_host(host);
+
+ return ret;
+}
+
+static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int sdhci_s3c_suspend(struct platform_device *dev, pm_message_t pm)
+{
+ struct sdhci_host *host = platform_get_drvdata(dev);
+
+ sdhci_suspend_host(host, pm);
+ return 0;
+}
+
+static int sdhci_s3c_resume(struct platform_device *dev)
+{
+ struct sdhci_host *host = platform_get_drvdata(dev);
+
+ sdhci_resume_host(host);
+ return 0;
+}
+
+#else
+#define sdhci_s3c_suspend NULL
+#define sdhci_s3c_resume NULL
+#endif
+
+static struct platform_driver sdhci_s3c_driver = {
+ .probe = sdhci_s3c_probe,
+ .remove = __devexit_p(sdhci_s3c_remove),
+ .suspend = sdhci_s3c_suspend,
+ .resume = sdhci_s3c_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "s3c-sdhci",
+ },
+};
+
+static int __init sdhci_s3c_init(void)
+{
+ return platform_driver_register(&sdhci_s3c_driver);
+}
+
+static void __exit sdhci_s3c_exit(void)
+{
+ platform_driver_unregister(&sdhci_s3c_driver);
+}
+
+module_init(sdhci_s3c_init);
+module_exit(sdhci_s3c_exit);
+
+MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
+MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:s3c-sdhci");
Index: linux-2.6.30-rc6/drivers/mtd/nand/s3c2410.c
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mtd/nand/s3c2410.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mtd/nand/s3c2410.c 2009-05-18 19:07:48.000000000 +0200
@@ -438,7 +438,7 @@
if ((diff0 & ~(1<<fls(diff0))) == 0)
return 1;
- return -1;
+ return -EBADMSG;
}
/* ECC functions
@@ -530,7 +530,12 @@
static void s3c2440_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
+ u8 *ptr = buf + (len & ~3);
+ int i;
+
readsl(info->regs + S3C2440_NFDATA, buf, len / 4);
+ for (i = 0; i != (len & 3); i++)
+ ptr[i] = readb(info->regs + S3C2440_NFDATA);
}
static void s3c2410_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
@@ -645,17 +650,31 @@
}
#ifdef CONFIG_MTD_PARTITIONS
+const char *part_probes[] = { "cmdlinepart", NULL };
static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info,
struct s3c2410_nand_mtd *mtd,
struct s3c2410_nand_set *set)
{
+ struct mtd_partition *part_info;
+ int nr_part = 0;
+
if (set == NULL)
return add_mtd_device(&mtd->mtd);
- if (set->nr_partitions > 0 && set->partitions != NULL) {
- return add_mtd_partitions(&mtd->mtd, set->partitions, set->nr_partitions);
+ if (set->nr_partitions == 0) {
+ mtd->mtd.name = set->name;
+ nr_part = parse_mtd_partitions(&mtd->mtd, part_probes,
+ &part_info, 0);
+ } else {
+ if (set->nr_partitions > 0 && set->partitions != NULL) {
+ nr_part = set->nr_partitions;
+ part_info = set->partitions;
+ }
}
+ if (nr_part > 0 && part_info)
+ return add_mtd_partitions(&mtd->mtd, part_info, nr_part);
+
return add_mtd_device(&mtd->mtd);
}
#else
@@ -684,9 +703,13 @@
chip->select_chip = s3c2410_nand_select_chip;
chip->chip_delay = 50;
chip->priv = nmtd;
- chip->options = 0;
chip->controller = &info->controller;
+ if (set->flags & S3C2410_NAND_BBT)
+ chip->options = NAND_USE_FLASH_BBT;
+ else
+ chip->options = 0;
+
switch (info->cpu_type) {
case TYPE_S3C2410:
chip->IO_ADDR_W = regs + S3C2410_NFDATA;
@@ -726,7 +749,7 @@
nmtd->mtd.owner = THIS_MODULE;
nmtd->set = set;
- if (hardware_ecc) {
+ if (!info->platform->software_ecc && hardware_ecc) {
chip->ecc.calculate = s3c2410_nand_calculate_ecc;
chip->ecc.correct = s3c2410_nand_correct_data;
chip->ecc.mode = NAND_ECC_HW;
Index: linux-2.6.30-rc6/drivers/mmc/core/core.c
===================================================================
--- linux-2.6.30-rc6.orig/drivers/mmc/core/core.c 2009-05-16 06:12:57.000000000 +0200
+++ linux-2.6.30-rc6/drivers/mmc/core/core.c 2009-05-18 19:07:48.000000000 +0200
@@ -59,10 +59,11 @@
/*
* Internal function. Flush all scheduled work from the MMC work queue.
*/
-static void mmc_flush_scheduled_work(void)
+void mmc_flush_scheduled_work(void)
{
flush_workqueue(workqueue);
}
+EXPORT_SYMBOL_GPL(mmc_flush_scheduled_work);
/**
* mmc_request_done - finish processing an MMC request