diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-29 07:28:36 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-29 07:28:36 -0700 |
commit | 18c0635363364ca2fc2d1cbd65bbf918daf89d1a (patch) | |
tree | 6fd1975977b4ab190b77952ee8e263f66e3dc5f7 /drivers/spi/spi-dw.h | |
parent | 41684f67af75b04152a1714e1a5375dfb00ee3da (diff) | |
parent | 940ab88962bc1aff3273a8356d64577a6e386736 (diff) |
Merge branch 'spi/next' of git://git.secretlab.ca/git/linux-2.6
* 'spi/next' of git://git.secretlab.ca/git/linux-2.6:
drivercore: Add helper macro for platform_driver boilerplate
spi: irq: Remove IRQF_DISABLED
OMAP: SPI: Fix the trying to free nonexistent resource error
spi/spi-ep93xx: add module.h include
spi/tegra: fix compilation error in spi-tegra.c
spi: spi-dw: fix all sparse warnings
spi/spi-pl022: Call pl022_dma_remove(pl022) only if enable_dma is true
spi/spi-pl022: calculate_effective_freq() must set rate <= requested rate
spi/spi-pl022: Don't allocate more sg than required.
spi/spi-pl022: Use GFP_ATOMIC for allocation from tasklet
spi/spi-pl022: Resolve formatting issues
Diffstat (limited to 'drivers/spi/spi-dw.h')
-rw-r--r-- | drivers/spi/spi-dw.h | 97 |
1 files changed, 53 insertions, 44 deletions
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 8b7b07bf6c3f..9c57c078031e 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -4,6 +4,33 @@ #include <linux/io.h> #include <linux/scatterlist.h> +/* Register offsets */ +#define DW_SPI_CTRL0 0x00 +#define DW_SPI_CTRL1 0x04 +#define DW_SPI_SSIENR 0x08 +#define DW_SPI_MWCR 0x0c +#define DW_SPI_SER 0x10 +#define DW_SPI_BAUDR 0x14 +#define DW_SPI_TXFLTR 0x18 +#define DW_SPI_RXFLTR 0x1c +#define DW_SPI_TXFLR 0x20 +#define DW_SPI_RXFLR 0x24 +#define DW_SPI_SR 0x28 +#define DW_SPI_IMR 0x2c +#define DW_SPI_ISR 0x30 +#define DW_SPI_RISR 0x34 +#define DW_SPI_TXOICR 0x38 +#define DW_SPI_RXOICR 0x3c +#define DW_SPI_RXUICR 0x40 +#define DW_SPI_MSTICR 0x44 +#define DW_SPI_ICR 0x48 +#define DW_SPI_DMACR 0x4c +#define DW_SPI_DMATDLR 0x50 +#define DW_SPI_DMARDLR 0x54 +#define DW_SPI_IDR 0x58 +#define DW_SPI_VERSION 0x5c +#define DW_SPI_DR 0x60 + /* Bit fields in CTRLR0 */ #define SPI_DFS_OFFSET 0 @@ -55,35 +82,6 @@ enum dw_ssi_type { SSI_NS_MICROWIRE, }; -struct dw_spi_reg { - u32 ctrl0; - u32 ctrl1; - u32 ssienr; - u32 mwcr; - u32 ser; - u32 baudr; - u32 txfltr; - u32 rxfltr; - u32 txflr; - u32 rxflr; - u32 sr; - u32 imr; - u32 isr; - u32 risr; - u32 txoicr; - u32 rxoicr; - u32 rxuicr; - u32 msticr; - u32 icr; - u32 dmacr; - u32 dmatdlr; - u32 dmardlr; - u32 idr; - u32 version; - u32 dr; /* Currently oper as 32 bits, - though only low 16 bits matters */ -} __packed; - struct dw_spi; struct dw_spi_dma_ops { int (*dma_init)(struct dw_spi *dws); @@ -161,23 +159,34 @@ struct dw_spi { #endif }; -#define dw_readl(dw, name) \ - __raw_readl(&(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_writel(dw, name, val) \ - __raw_writel((val), &(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_readw(dw, name) \ - __raw_readw(&(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_writew(dw, name, val) \ - __raw_writew((val), &(((struct dw_spi_reg *)dw->regs)->name)) +static inline u32 dw_readl(struct dw_spi *dws, u32 offset) +{ + return __raw_readl(dws->regs + offset); +} + +static inline void dw_writel(struct dw_spi *dws, u32 offset, u32 val) +{ + __raw_writel(val, dws->regs + offset); +} + +static inline u16 dw_readw(struct dw_spi *dws, u32 offset) +{ + return __raw_readw(dws->regs + offset); +} + +static inline void dw_writew(struct dw_spi *dws, u32 offset, u16 val) +{ + __raw_writew(val, dws->regs + offset); +} static inline void spi_enable_chip(struct dw_spi *dws, int enable) { - dw_writel(dws, ssienr, (enable ? 1 : 0)); + dw_writel(dws, DW_SPI_SSIENR, (enable ? 1 : 0)); } static inline void spi_set_clk(struct dw_spi *dws, u16 div) { - dw_writel(dws, baudr, div); + dw_writel(dws, DW_SPI_BAUDR, div); } static inline void spi_chip_sel(struct dw_spi *dws, u16 cs) @@ -188,7 +197,7 @@ static inline void spi_chip_sel(struct dw_spi *dws, u16 cs) if (dws->cs_control) dws->cs_control(1); - dw_writel(dws, ser, 1 << cs); + dw_writel(dws, DW_SPI_SER, 1 << cs); } /* Disable IRQ bits */ @@ -196,8 +205,8 @@ static inline void spi_mask_intr(struct dw_spi *dws, u32 mask) { u32 new_mask; - new_mask = dw_readl(dws, imr) & ~mask; - dw_writel(dws, imr, new_mask); + new_mask = dw_readl(dws, DW_SPI_IMR) & ~mask; + dw_writel(dws, DW_SPI_IMR, new_mask); } /* Enable IRQ bits */ @@ -205,8 +214,8 @@ static inline void spi_umask_intr(struct dw_spi *dws, u32 mask) { u32 new_mask; - new_mask = dw_readl(dws, imr) | mask; - dw_writel(dws, imr, new_mask); + new_mask = dw_readl(dws, DW_SPI_IMR) | mask; + dw_writel(dws, DW_SPI_IMR, new_mask); } /* |