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ramips: add rt2880/mt7620 spi register defines 

Signed-off-by: Michael Lee <igvtee@gmail.com>

SVN-Revision: 47573
lede-17.01
John Crispin 2015-11-22 11:48:10 +00:00
parent cd9d0ee0d0
commit 13fbd6fea7
1 changed files with 63 additions and 2 deletions
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65
target/linux/ramips/patches-3.18/0050-SPI-ralink-add-Ralink-SoC-spi-driver.patch
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@ -41,7 +41,7 @@ Acked-by: John Crispin <blogic@openwrt.org>
spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o
--- /dev/null
+++ b/drivers/spi/spi-rt2880.c
@@ -0,0 +1,432 @@
@@ -0,0 +1,493 @@
+/*
+ * spi-rt2880.c -- Ralink RT288x/RT305x SPI controller driver
+ *
@ -77,17 +77,31 @@ Acked-by: John Crispin <blogic@openwrt.org>
+#define RAMIPS_SPI_CFG 0x10
+#define RAMIPS_SPI_CTL 0x14
+#define RAMIPS_SPI_DATA 0x20
+#define RAMIPS_SPI_ADDR 0x24
+#define RAMIPS_SPI_BS 0x28
+#define RAMIPS_SPI_USER 0x2C
+#define RAMIPS_SPI_TXFIFO 0x30
+#define RAMIPS_SPI_RXFIFO 0x34
+#define RAMIPS_SPI_FIFO_STAT 0x38
+#define RAMIPS_SPI_MODE 0x3C
+#define RAMIPS_SPI_DEV_OFFSET 0x40
+#define RAMIPS_SPI_DMA 0x80
+#define RAMIPS_SPI_DMASTAT 0x84
+#define RAMIPS_SPI_ARBITER 0xF0
+
+/* SPISTAT register bit field */
+#define SPISTAT_BUSY BIT(0)
+
+/* SPICFG register bit field */
+#define SPICFG_LSBFIRST 0
+#define SPICFG_ADDRMODE BIT(12)
+#define SPICFG_RXENVDIS BIT(11)
+#define SPICFG_RXCAP BIT(10)
+#define SPICFG_SPIENMODE BIT(9)
+#define SPICFG_MSBFIRST BIT(8)
+#define SPICFG_SPICLKPOL BIT(6)
+#define SPICFG_RXCLKEDGE_FALLING BIT(5)
+#define SPICFG_TXCLKEDGE_FALLING BIT(4)
+#define SPICFG_HIZSPI BIT(3)
+#define SPICFG_SPICLK_PRESCALE_MASK 0x7
+#define SPICFG_SPICLK_DIV2 0
+#define SPICFG_SPICLK_DIV4 1
@ -99,13 +113,60 @@ Acked-by: John Crispin <blogic@openwrt.org>
+#define SPICFG_SPICLK_DISABLE 7
+
+/* SPICTL register bit field */
+#define SPICTL_START BIT(4)
+#define SPICTL_HIZSDO BIT(3)
+#define SPICTL_STARTWR BIT(2)
+#define SPICTL_STARTRD BIT(1)
+#define SPICTL_SPIENA BIT(0)
+
+/* SPIUSER register bit field */
+#define SPIUSER_USERMODE BIT(21)
+#define SPIUSER_INSTR_PHASE BIT(20)
+#define SPIUSER_ADDR_PHASE_MASK 0x7
+#define SPIUSER_ADDR_PHASE_OFFSET 17
+#define SPIUSER_MODE_PHASE BIT(16)
+#define SPIUSER_DUMMY_PHASE_MASK 0x3
+#define SPIUSER_DUMMY_PHASE_OFFSET 14
+#define SPIUSER_DATA_PHASE_MASK 0x3
+#define SPIUSER_DATA_PHASE_OFFSET 12
+#define SPIUSER_DATA_READ (BIT(0) << SPIUSER_DATA_PHASE_OFFSET)
+#define SPIUSER_DATA_WRITE (BIT(1) << SPIUSER_DATA_PHASE_OFFSET)
+#define SPIUSER_ADDR_TYPE_OFFSET 9
+#define SPIUSER_MODE_TYPE_OFFSET 6
+#define SPIUSER_DUMMY_TYPE_OFFSET 3
+#define SPIUSER_DATA_TYPE_OFFSET 0
+#define SPIUSER_TRANSFER_MASK 0x7
+#define SPIUSER_TRANSFER_SINGLE BIT(0)
+#define SPIUSER_TRANSFER_DUAL BIT(1)
+#define SPIUSER_TRANSFER_QUAD BIT(2)
+
+#define SPIUSER_TRANSFER_TYPE(type) ( \
+ (type << SPIUSER_ADDR_TYPE_OFFSET) | \
+ (type << SPIUSER_MODE_TYPE_OFFSET) | \
+ (type << SPIUSER_DUMMY_TYPE_OFFSET) | \
+ (type << SPIUSER_DATA_TYPE_OFFSET) \
+)
+
+/* SPIFIFOSTAT register bit field */
+#define SPIFIFOSTAT_TXEMPTY BIT(19)
+#define SPIFIFOSTAT_RXEMPTY BIT(18)
+#define SPIFIFOSTAT_TXFULL BIT(17)
+#define SPIFIFOSTAT_RXFULL BIT(16)
+#define SPIFIFOSTAT_FIFO_MASK 0xff
+#define SPIFIFOSTAT_TX_OFFSET 8
+#define SPIFIFOSTAT_RX_OFFSET 0
+
+#define SPI_FIFO_DEPTH 16
+
+/* SPIMODE register bit field */
+#define SPIMODE_MODE_OFFSET 24
+#define SPIMODE_DUMMY_OFFSET 0
+
+/* SPIARB register bit field */
+#define SPICTL_ARB_EN BIT(31)
+#define SPICTL_CSCTL1 BIT(16)
+#define SPI1_POR BIT(1)
+#define SPI0_POR BIT(0)
+
+struct rt2880_spi {
+ struct spi_master *master;