diff options
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mxs/clock.c | 3 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mxs/dma.h | 19 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mxs/regs-ssp.h | 26 | ||||
| -rw-r--r-- | drivers/mmc/mxsmmc.c | 20 | ||||
| -rw-r--r-- | drivers/spi/mxs_spi.c | 4 |
5 files changed, 52 insertions, 20 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/clock.c b/arch/arm/cpu/arm926ejs/mxs/clock.c index 00b9aba457..43e766334c 100644 --- a/arch/arm/cpu/arm926ejs/mxs/clock.c +++ b/arch/arm/cpu/arm926ejs/mxs/clock.c @@ -289,7 +289,8 @@ static uint32_t mxs_get_sspclk(enum mxs_sspclock ssp) void mxs_set_ssp_busclock(unsigned int bus, uint32_t freq) { struct mxs_ssp_regs *ssp_regs; - const uint32_t sspclk = mxs_get_sspclk(bus); + const enum mxs_sspclock clk = mxs_ssp_clock_by_bus(bus); + const uint32_t sspclk = mxs_get_sspclk(clk); uint32_t reg; uint32_t divide, rate, tgtclk; diff --git a/arch/arm/include/asm/arch-mxs/dma.h b/arch/arm/include/asm/arch-mxs/dma.h index a0a0ea5010..1ac8696e64 100644 --- a/arch/arm/include/asm/arch-mxs/dma.h +++ b/arch/arm/include/asm/arch-mxs/dma.h @@ -40,6 +40,19 @@ /* * MXS DMA channels */ +#if defined(CONFIG_MX23) +enum { + MXS_DMA_CHANNEL_AHB_APBH_LCDIF = 0, + MXS_DMA_CHANNEL_AHB_APBH_SSP0, + MXS_DMA_CHANNEL_AHB_APBH_SSP1, + MXS_DMA_CHANNEL_AHB_APBH_RESERVED0, + MXS_DMA_CHANNEL_AHB_APBH_GPMI0, + MXS_DMA_CHANNEL_AHB_APBH_GPMI1, + MXS_DMA_CHANNEL_AHB_APBH_GPMI2, + MXS_DMA_CHANNEL_AHB_APBH_GPMI3, + MXS_MAX_DMA_CHANNELS, +}; +#elif defined(CONFIG_MX28) enum { MXS_DMA_CHANNEL_AHB_APBH_SSP0 = 0, MXS_DMA_CHANNEL_AHB_APBH_SSP1, @@ -53,9 +66,13 @@ enum { MXS_DMA_CHANNEL_AHB_APBH_GPMI5, MXS_DMA_CHANNEL_AHB_APBH_GPMI6, MXS_DMA_CHANNEL_AHB_APBH_GPMI7, - MXS_DMA_CHANNEL_AHB_APBH_SSP, + MXS_DMA_CHANNEL_AHB_APBH_HSADC, + MXS_DMA_CHANNEL_AHB_APBH_LCDIF, + MXS_DMA_CHANNEL_AHB_APBH_RESERVED0, + MXS_DMA_CHANNEL_AHB_APBH_RESERVED1, MXS_MAX_DMA_CHANNELS, }; +#endif /* * MXS DMA hardware command. diff --git a/arch/arm/include/asm/arch-mxs/regs-ssp.h b/arch/arm/include/asm/arch-mxs/regs-ssp.h index 9b30f56f54..5920f9b4dc 100644 --- a/arch/arm/include/asm/arch-mxs/regs-ssp.h +++ b/arch/arm/include/asm/arch-mxs/regs-ssp.h @@ -74,6 +74,32 @@ struct mxs_ssp_regs { }; #endif +static inline int mxs_ssp_bus_id_valid(int bus) +{ +#if defined(CONFIG_MX23) + const unsigned int mxs_ssp_chan_count = 2; +#elif defined(CONFIG_MX28) + const unsigned int mxs_ssp_chan_count = 4; +#endif + + if (bus >= mxs_ssp_chan_count) + return 0; + + if (bus < 0) + return 0; + + return 1; +} + +static inline int mxs_ssp_clock_by_bus(unsigned int clock) +{ +#if defined(CONFIG_MX23) + return 0; +#elif defined(CONFIG_MX28) + return clock; +#endif +} + static inline struct mxs_ssp_regs *mxs_ssp_regs_by_bus(unsigned int port) { switch (port) { diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c index a72f66cc7a..b1537e24ac 100644 --- a/drivers/mmc/mxsmmc.c +++ b/drivers/mmc/mxsmmc.c @@ -53,12 +53,6 @@ struct mxsmmc_priv { struct mxs_dma_desc *desc; }; -#if defined(CONFIG_MX23) -static const unsigned int mxsmmc_id_offset = 1; -#elif defined(CONFIG_MX28) -static const unsigned int mxsmmc_id_offset = 0; -#endif - #define MXSMMC_MAX_TIMEOUT 10000 #define MXSMMC_SMALL_TRANSFER 512 @@ -137,7 +131,7 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) priv->desc->cmd.data |= MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM | (data_count << MXS_DMA_DESC_BYTES_OFFSET); - dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + priv->id + mxsmmc_id_offset; + dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + priv->id; mxs_dma_desc_append(dmach, priv->desc); if (mxs_dma_go(dmach)) { bounce_buffer_stop(&bbstate); @@ -390,15 +384,9 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int)) struct mmc *mmc = NULL; struct mxsmmc_priv *priv = NULL; int ret; -#if defined(CONFIG_MX23) - const unsigned int mxsmmc_max_id = 2; - const unsigned int mxsmmc_clk_id = 0; -#elif defined(CONFIG_MX28) - const unsigned int mxsmmc_max_id = 4; - const unsigned int mxsmmc_clk_id = id; -#endif + const unsigned int mxsmmc_clk_id = mxs_ssp_clock_by_bus(id); - if (id >= mxsmmc_max_id) + if (!mxs_ssp_bus_id_valid(id)) return -ENODEV; mmc = malloc(sizeof(struct mmc)); @@ -418,7 +406,7 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int)) return -ENOMEM; } - ret = mxs_dma_init_channel(id + mxsmmc_id_offset); + ret = mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + id); if (ret) return ret; diff --git a/drivers/spi/mxs_spi.c b/drivers/spi/mxs_spi.c index bb865b7f4c..6acc95a1b4 100644 --- a/drivers/spi/mxs_spi.c +++ b/drivers/spi/mxs_spi.c @@ -70,7 +70,7 @@ void spi_init(void) int spi_cs_is_valid(unsigned int bus, unsigned int cs) { /* MXS SPI: 4 ports and 3 chip selects maximum */ - if (bus > 3 || cs > 2) + if (!mxs_ssp_bus_id_valid(bus) || cs > 2) return 0; else return 1; @@ -92,7 +92,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, if (!mxs_slave) return NULL; - if (mxs_dma_init_channel(bus)) + if (mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + bus)) goto err_init; mxs_slave->slave.bus = bus; |
