diff options
| -rw-r--r-- | arch/arm/mach-davinci/board-dm355-evm.c | 29 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/board-dm355-leopard.c | 28 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/board-dm644x-evm.c | 24 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/devices.c | 157 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/mmc.h | 33 |
5 files changed, 271 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c index 6af3c6c..0874413 100644 --- a/arch/arm/mach-davinci/board-dm355-evm.c +++ b/arch/arm/mach-davinci/board-dm355-evm.c @@ -36,6 +36,7 @@ #include <mach/i2c.h> #include <mach/serial.h> #include <mach/nand.h> +#include <mach/mmc.h> #define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000 @@ -191,6 +192,31 @@ static void __init dm355_evm_map_io(void) dm355_init(); } +static int dm355evm_mmc_get_cd(int module) +{ + if (!gpio_is_valid(dm355evm_mmc_gpios)) + return -ENXIO; + /* low == card present */ + return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1); +} + +static int dm355evm_mmc_get_ro(int module) +{ + if (!gpio_is_valid(dm355evm_mmc_gpios)) + return -ENXIO; + /* high == card's write protect switch active */ + return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0); +} + +static struct davinci_mmc_config dm355evm_mmc_config = { + .get_cd = dm355evm_mmc_get_cd, + .get_ro = dm355evm_mmc_get_ro, + .wires = 4, + .max_freq = 50000000, + .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, + .version = MMC_CTLR_VERSION_1, +}; + /* Don't connect anything to J10 unless you're only using USB host * mode *and* have to do so with some kind of gender-bender. If * you have proper Mini-B or Mini-A cables (or Mini-A adapters) @@ -249,6 +275,9 @@ static __init void dm355_evm_init(void) /* irlml6401 switches over 1A in under 8 msec */ setup_usb(500, 8); + davinci_setup_mmc(0, &dm355evm_mmc_config); + davinci_setup_mmc(1, &dm355evm_mmc_config); + dm355_init_spi0(BIT(0), dm355_evm_spi_info, ARRAY_SIZE(dm355_evm_spi_info)); } diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c index 22f16f3..d4562f5 100644 --- a/arch/arm/mach-davinci/board-dm355-leopard.c +++ b/arch/arm/mach-davinci/board-dm355-leopard.c @@ -35,6 +35,7 @@ #include <mach/i2c.h> #include <mach/serial.h> #include <mach/nand.h> +#include <mach/mmc.h> #define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000 @@ -190,6 +191,30 @@ static void __init dm355_leopard_map_io(void) dm355_init(); } +static int dm355leopard_mmc_get_cd(int module) +{ + if (!gpio_is_valid(leopard_mmc_gpio)) + return -ENXIO; + /* low == card present */ + return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1); +} + +static int dm355leopard_mmc_get_ro(int module) +{ + if (!gpio_is_valid(leopard_mmc_gpio)) + return -ENXIO; + /* high == card's write protect switch active */ + return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0); +} + +static struct davinci_mmc_config dm355leopard_mmc_config = { + .get_cd = dm355leopard_mmc_get_cd, + .get_ro = dm355leopard_mmc_get_ro, + .wires = 4, + .max_freq = 50000000, + .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, +}; + /* Don't connect anything to J10 unless you're only using USB host * mode *and* have to do so with some kind of gender-bender. If * you have proper Mini-B or Mini-A cables (or Mini-A adapters) @@ -248,6 +273,9 @@ static __init void dm355_leopard_init(void) /* irlml6401 switches over 1A in under 8 msec */ setup_usb(500, 8); + davinci_setup_mmc(0, &dm355leopard_mmc_config); + davinci_setup_mmc(1, &dm355leopard_mmc_config); + dm355_init_spi0(BIT(0), dm355_leopard_spi_info, ARRAY_SIZE(dm355_leopard_spi_info)); } diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index b2e7f9c..9c3ce31 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -44,6 +44,7 @@ #include <mach/mux.h> #include <mach/psc.h> #include <mach/nand.h> +#include <mach/mmc.h> #define DM644X_EVM_PHY_MASK (0x2) #define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */ @@ -545,6 +546,27 @@ static int dm6444evm_msp430_get_pins(void) return (buf[3] << 8) | buf[2]; } +static int dm6444evm_mmc_get_cd(int module) +{ + int status = dm6444evm_msp430_get_pins(); + + return (status < 0) ? status : !(status & BIT(1)); +} + +static int dm6444evm_mmc_get_ro(int module) +{ + int status = dm6444evm_msp430_get_pins(); + + return (status < 0) ? status : status & BIT(6 + 8); +} + +static struct davinci_mmc_config dm6446evm_mmc_config = { + .get_cd = dm6444evm_mmc_get_cd, + .get_ro = dm6444evm_mmc_get_ro, + .wires = 4, + .version = MMC_CTLR_VERSION_1 +}; + static struct i2c_board_info __initdata i2c_info[] = { { I2C_BOARD_INFO("dm6446evm_msp", 0x23), @@ -671,6 +693,8 @@ static __init void davinci_evm_init(void) ARRAY_SIZE(davinci_evm_devices)); evm_init_i2c(); + davinci_setup_mmc(0, &dm6446evm_mmc_config); + davinci_serial_init(&uart_config); /* Register the fixup for PHY on DaVinci */ diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c index 7fdc408..56c1931 100644 --- a/arch/arm/mach-davinci/devices.c +++ b/arch/arm/mach-davinci/devices.c @@ -23,8 +23,13 @@ #include <mach/irqs.h> #include <mach/cputype.h> #include <mach/mux.h> +#include <mach/edma.h> +#include <mach/mmc.h> #define DAVINCI_I2C_BASE 0x01C21000 +#define DAVINCI_MMCSD0_BASE 0x01E10000 +#define DM355_MMCSD0_BASE 0x01E11000 +#define DM355_MMCSD1_BASE 0x01E00000 static struct resource i2c_resources[] = { { @@ -54,6 +59,158 @@ void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata) (void) platform_device_register(&davinci_i2c_device); } +#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE) + +static u64 mmcsd0_dma_mask = DMA_32BIT_MASK; + +static struct resource mmcsd0_resources[] = { + { + /* different on dm355 */ + .start = DAVINCI_MMCSD0_BASE, + .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + /* IRQs: MMC/SD, then SDIO */ + { + .start = IRQ_MMCINT, + .flags = IORESOURCE_IRQ, + }, { + /* different on dm355 */ + .start = IRQ_SDIOINT, + .flags = IORESOURCE_IRQ, + }, + /* DMA channels: RX, then TX */ + { + .start = DAVINCI_DMA_MMCRXEVT, + .flags = IORESOURCE_DMA, + }, { + .start = DAVINCI_DMA_MMCTXEVT, + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device davinci_mmcsd0_device = { + .name = "davinci_mmc", + .id = 0, + .dev = { + .dma_mask = &mmcsd0_dma_mask, + .coherent_dma_mask = DMA_32BIT_MASK, + }, + .num_resources = ARRAY_SIZE(mmcsd0_resources), + .resource = mmcsd0_resources, +}; + +static u64 mmcsd1_dma_mask = DMA_32BIT_MASK; + +static struct resource mmcsd1_resources[] = { + { + .start = DM355_MMCSD1_BASE, + .end = DM355_MMCSD1_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + /* IRQs: MMC/SD, then SDIO */ + { + .start = IRQ_DM355_MMCINT1, + .flags = IORESOURCE_IRQ, + }, { + .start = IRQ_DM355_SDIOINT1, + .flags = IORESOURCE_IRQ, + }, + /* DMA channels: RX, then TX */ + { + .start = 30, /* rx */ + .flags = IORESOURCE_DMA, + }, { + .start = 31, /* tx */ + .flags = IORESOURCE_DMA, + }, +}; + +static struct platform_device davinci_mmcsd1_device = { + .name = "davinci_mmc", + .id = 1, + .dev = { + .dma_mask = &mmcsd1_dma_mask, + .coherent_dma_mask = DMA_32BIT_MASK, + }, + .num_resources = ARRAY_SIZE(mmcsd1_resources), + .resource = mmcsd1_resources, +}; + + +void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) +{ + struct platform_device *pdev = NULL; + + if (WARN_ON(cpu_is_davinci_dm646x())) + return; + + /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too; + * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused. + * + * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are + * not handled right here ... + */ + switch (module) { + case 1: + if (!cpu_is_davinci_dm355()) + break; + + /* REVISIT we may not need all these pins if e.g. this + * is a hard-wired SDIO device... + */ + davinci_cfg_reg(DM355_SD1_CMD); + davinci_cfg_reg(DM355_SD1_CLK); + davinci_cfg_reg(DM355_SD1_DATA0); + davinci_cfg_reg(DM355_SD1_DATA1); + davinci_cfg_reg(DM355_SD1_DATA2); + davinci_cfg_reg(DM355_SD1_DATA3); + + pdev = &davinci_mmcsd1_device; + break; + case 0: + if (cpu_is_davinci_dm355()) { + mmcsd0_resources[0].start = DM355_MMCSD0_BASE; + mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1; + mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0; + + /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */ + davinci_cfg_reg(DM355_MMCSD0); + + /* enable RX EDMA */ + davinci_cfg_reg(DM355_EVT26_MMC0_RX); + } + + else if (cpu_is_davinci_dm644x()) { + /* REVISIT: should this be in board-init code? */ + void __iomem *base = + IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE); + + /* Power-on 3.3V IO cells */ + __raw_writel(0, base + DM64XX_VDD3P3V_PWDN); + /*Set up the pull regiter for MMC */ + davinci_cfg_reg(DM644X_MSTK); + } + + pdev = &davinci_mmcsd0_device; + break; + } + + if (WARN_ON(!pdev)) + return; + + pdev->dev.platform_data = config; + platform_device_register(pdev); +} + +#else + +void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) +{ +} + +#endif + /*-------------------------------------------------------------------------*/ static struct resource wdt_resources[] = { diff --git a/arch/arm/mach-davinci/include/mach/mmc.h b/arch/arm/mach-davinci/include/mach/mmc.h new file mode 100644 index 0000000..5a85e24 --- /dev/null +++ b/arch/arm/mach-davinci/include/mach/mmc.h @@ -0,0 +1,33 @@ +/* + * Board-specific MMC configuration + */ + +#ifndef _DAVINCI_MMC_H +#define _DAVINCI_MMC_H + +#include <linux/types.h> +#include <linux/mmc/host.h> + +struct davinci_mmc_config { + /* get_cd()/get_wp() may sleep */ + int (*get_cd)(int module); + int (*get_ro)(int module); + /* wires == 0 is equivalent to wires == 4 (4-bit parallel) */ + u8 wires; + + u32 max_freq; + + /* any additional host capabilities: OR'd in to mmc->f_caps */ + u32 caps; + + /* Version of the MMC/SD controller */ + u8 version; +}; +void davinci_setup_mmc(int module, struct davinci_mmc_config *config); + +enum { + MMC_CTLR_VERSION_1 = 0, /* DM644x and DM355 */ + MMC_CTLR_VERSION_2, /* DA830 */ +}; + +#endif |