diff options
Diffstat (limited to 'include/linux/mmc/sh_mmcif.h')
-rw-r--r-- | include/linux/mmc/sh_mmcif.h | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 5c99da1..f216a88 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -14,8 +14,9 @@ #ifndef __SH_MMCIF_H__ #define __SH_MMCIF_H__ -#include <linux/platform_device.h> #include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/sh_dma.h> /* * MMCIF : CE_CLK_CTRL [19:16] @@ -31,13 +32,19 @@ * 1111 : Peripheral clock (sup_pclk set '1') */ +struct sh_mmcif_dma { + struct sh_dmae_slave chan_priv_tx; + struct sh_dmae_slave chan_priv_rx; +}; + struct sh_mmcif_plat_data { void (*set_pwr)(struct platform_device *pdev, int state); void (*down_pwr)(struct platform_device *pdev); int (*get_cd)(struct platform_device *pdef); - u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */ - unsigned long caps; - u32 ocr; + struct sh_mmcif_dma *dma; + u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */ + unsigned long caps; + u32 ocr; }; #define MMCIF_CE_CMD_SET 0x00000000 @@ -59,6 +66,29 @@ struct sh_mmcif_plat_data { #define MMCIF_CE_HOST_STS2 0x0000004C #define MMCIF_CE_VERSION 0x0000007C +/* CE_BUF_ACC */ +#define BUF_ACC_DMAWEN (1 << 25) +#define BUF_ACC_DMAREN (1 << 24) +#define BUF_ACC_BUSW_32 (0 << 17) +#define BUF_ACC_BUSW_16 (1 << 17) +#define BUF_ACC_ATYP (1 << 16) + +/* CE_CLK_CTRL */ +#define CLK_ENABLE (1 << 24) /* 1: output mmc clock */ +#define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) +#define CLK_SUP_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) +#define SRSPTO_256 ((1 << 13) | (0 << 12)) /* resp timeout */ +#define SRBSYTO_29 ((1 << 11) | (1 << 10) | \ + (1 << 9) | (1 << 8)) /* resp busy timeout */ +#define SRWDTO_29 ((1 << 7) | (1 << 6) | \ + (1 << 5) | (1 << 4)) /* read/write timeout */ +#define SCCSTO_29 ((1 << 3) | (1 << 2) | \ + (1 << 1) | (1 << 0)) /* ccs timeout */ + +/* CE_VERSION */ +#define SOFT_RST_ON (1 << 31) +#define SOFT_RST_OFF ~SOFT_RST_ON + static inline u32 sh_mmcif_readl(void __iomem *addr, int reg) { return readl(addr + reg); @@ -149,17 +179,23 @@ static inline void sh_mmcif_boot_init(void __iomem *base) /* reset */ tmp = sh_mmcif_readl(base, MMCIF_CE_VERSION); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp | 0x80000000); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp & ~0x80000000); + sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp | SOFT_RST_ON); + sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp & SOFT_RST_OFF); /* byte swap */ - sh_mmcif_writel(base, MMCIF_CE_BUF_ACC, 0x00010000); + sh_mmcif_writel(base, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP); /* Set block size in MMCIF hardware */ sh_mmcif_writel(base, MMCIF_CE_BLOCK_SET, SH_MMCIF_BBS); - /* Enable the clock, set it to Bus clock/256 (about 325Khz)*/ - sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, 0x01072fff); + /* Enable the clock, set it to Bus clock/256 (about 325Khz). + * It is unclear where 0x70000 comes from or if it is even needed. + * It is there for byte-compatibility with code that is known to + * work. + */ + sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, + CLK_ENABLE | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | + SCCSTO_29 | 0x70000); /* CMD0 */ sh_mmcif_boot_cmd(base, 0x00000040, 0); |