davinci: MMC platform support
Add SoC and platform-specific data and init for MMC driver. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman
parent
35652fe185
commit
2dbf56aeb7
5 changed files with 271 additions and 0 deletions
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@ -36,6 +36,7 @@
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#include <mach/i2c.h>
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#include <mach/serial.h>
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#include <mach/nand.h>
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#include <mach/mmc.h>
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#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
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#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
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@ -191,6 +192,31 @@ static void __init dm355_evm_map_io(void)
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dm355_init();
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}
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static int dm355evm_mmc_get_cd(int module)
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{
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if (!gpio_is_valid(dm355evm_mmc_gpios))
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return -ENXIO;
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/* low == card present */
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return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
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}
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static int dm355evm_mmc_get_ro(int module)
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{
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if (!gpio_is_valid(dm355evm_mmc_gpios))
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return -ENXIO;
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/* high == card's write protect switch active */
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return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
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}
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static struct davinci_mmc_config dm355evm_mmc_config = {
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.get_cd = dm355evm_mmc_get_cd,
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.get_ro = dm355evm_mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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.version = MMC_CTLR_VERSION_1,
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};
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/* Don't connect anything to J10 unless you're only using USB host
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* mode *and* have to do so with some kind of gender-bender. If
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* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
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@ -249,6 +275,9 @@ static __init void dm355_evm_init(void)
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/* irlml6401 switches over 1A in under 8 msec */
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setup_usb(500, 8);
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davinci_setup_mmc(0, &dm355evm_mmc_config);
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davinci_setup_mmc(1, &dm355evm_mmc_config);
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dm355_init_spi0(BIT(0), dm355_evm_spi_info,
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ARRAY_SIZE(dm355_evm_spi_info));
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}
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@ -35,6 +35,7 @@
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#include <mach/i2c.h>
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#include <mach/serial.h>
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#include <mach/nand.h>
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#include <mach/mmc.h>
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#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
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#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
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@ -190,6 +191,30 @@ static void __init dm355_leopard_map_io(void)
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dm355_init();
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}
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static int dm355leopard_mmc_get_cd(int module)
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{
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if (!gpio_is_valid(leopard_mmc_gpio))
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return -ENXIO;
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/* low == card present */
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return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
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}
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static int dm355leopard_mmc_get_ro(int module)
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{
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if (!gpio_is_valid(leopard_mmc_gpio))
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return -ENXIO;
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/* high == card's write protect switch active */
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return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
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}
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static struct davinci_mmc_config dm355leopard_mmc_config = {
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.get_cd = dm355leopard_mmc_get_cd,
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.get_ro = dm355leopard_mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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};
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/* Don't connect anything to J10 unless you're only using USB host
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* mode *and* have to do so with some kind of gender-bender. If
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* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
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@ -248,6 +273,9 @@ static __init void dm355_leopard_init(void)
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/* irlml6401 switches over 1A in under 8 msec */
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setup_usb(500, 8);
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davinci_setup_mmc(0, &dm355leopard_mmc_config);
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davinci_setup_mmc(1, &dm355leopard_mmc_config);
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dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
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ARRAY_SIZE(dm355_leopard_spi_info));
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}
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@ -44,6 +44,7 @@
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#include <mach/mux.h>
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#include <mach/psc.h>
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#include <mach/nand.h>
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#include <mach/mmc.h>
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#define DM644X_EVM_PHY_MASK (0x2)
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#define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
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@ -545,6 +546,27 @@ static int dm6444evm_msp430_get_pins(void)
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return (buf[3] << 8) | buf[2];
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}
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static int dm6444evm_mmc_get_cd(int module)
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{
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int status = dm6444evm_msp430_get_pins();
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return (status < 0) ? status : !(status & BIT(1));
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}
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static int dm6444evm_mmc_get_ro(int module)
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{
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int status = dm6444evm_msp430_get_pins();
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return (status < 0) ? status : status & BIT(6 + 8);
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}
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static struct davinci_mmc_config dm6446evm_mmc_config = {
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.get_cd = dm6444evm_mmc_get_cd,
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.get_ro = dm6444evm_mmc_get_ro,
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.wires = 4,
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.version = MMC_CTLR_VERSION_1
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};
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static struct i2c_board_info __initdata i2c_info[] = {
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{
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I2C_BOARD_INFO("dm6446evm_msp", 0x23),
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@ -671,6 +693,8 @@ static __init void davinci_evm_init(void)
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ARRAY_SIZE(davinci_evm_devices));
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evm_init_i2c();
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davinci_setup_mmc(0, &dm6446evm_mmc_config);
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davinci_serial_init(&uart_config);
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/* Register the fixup for PHY on DaVinci */
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@ -23,8 +23,13 @@
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#include <mach/irqs.h>
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#include <mach/cputype.h>
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#include <mach/mux.h>
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#include <mach/edma.h>
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#include <mach/mmc.h>
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#define DAVINCI_I2C_BASE 0x01C21000
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#define DAVINCI_MMCSD0_BASE 0x01E10000
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#define DM355_MMCSD0_BASE 0x01E11000
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#define DM355_MMCSD1_BASE 0x01E00000
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static struct resource i2c_resources[] = {
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{
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@ -54,6 +59,158 @@ void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
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(void) platform_device_register(&davinci_i2c_device);
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}
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#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
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static u64 mmcsd0_dma_mask = DMA_32BIT_MASK;
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static struct resource mmcsd0_resources[] = {
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{
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/* different on dm355 */
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.start = DAVINCI_MMCSD0_BASE,
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.end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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/* IRQs: MMC/SD, then SDIO */
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{
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.start = IRQ_MMCINT,
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.flags = IORESOURCE_IRQ,
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}, {
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/* different on dm355 */
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.start = IRQ_SDIOINT,
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.flags = IORESOURCE_IRQ,
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},
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/* DMA channels: RX, then TX */
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{
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.start = DAVINCI_DMA_MMCRXEVT,
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.flags = IORESOURCE_DMA,
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}, {
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.start = DAVINCI_DMA_MMCTXEVT,
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.flags = IORESOURCE_DMA,
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},
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};
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static struct platform_device davinci_mmcsd0_device = {
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.name = "davinci_mmc",
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.id = 0,
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.dev = {
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.dma_mask = &mmcsd0_dma_mask,
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.coherent_dma_mask = DMA_32BIT_MASK,
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},
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.num_resources = ARRAY_SIZE(mmcsd0_resources),
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.resource = mmcsd0_resources,
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};
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static u64 mmcsd1_dma_mask = DMA_32BIT_MASK;
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static struct resource mmcsd1_resources[] = {
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{
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.start = DM355_MMCSD1_BASE,
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.end = DM355_MMCSD1_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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/* IRQs: MMC/SD, then SDIO */
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{
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.start = IRQ_DM355_MMCINT1,
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.flags = IORESOURCE_IRQ,
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}, {
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.start = IRQ_DM355_SDIOINT1,
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.flags = IORESOURCE_IRQ,
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},
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/* DMA channels: RX, then TX */
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{
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.start = 30, /* rx */
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.flags = IORESOURCE_DMA,
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}, {
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.start = 31, /* tx */
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.flags = IORESOURCE_DMA,
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},
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};
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static struct platform_device davinci_mmcsd1_device = {
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.name = "davinci_mmc",
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.id = 1,
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.dev = {
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.dma_mask = &mmcsd1_dma_mask,
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.coherent_dma_mask = DMA_32BIT_MASK,
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},
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.num_resources = ARRAY_SIZE(mmcsd1_resources),
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.resource = mmcsd1_resources,
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};
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
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{
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struct platform_device *pdev = NULL;
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if (WARN_ON(cpu_is_davinci_dm646x()))
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return;
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/* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
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* for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
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*
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* FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
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* not handled right here ...
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*/
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switch (module) {
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case 1:
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if (!cpu_is_davinci_dm355())
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break;
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/* REVISIT we may not need all these pins if e.g. this
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* is a hard-wired SDIO device...
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*/
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davinci_cfg_reg(DM355_SD1_CMD);
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davinci_cfg_reg(DM355_SD1_CLK);
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davinci_cfg_reg(DM355_SD1_DATA0);
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davinci_cfg_reg(DM355_SD1_DATA1);
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davinci_cfg_reg(DM355_SD1_DATA2);
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davinci_cfg_reg(DM355_SD1_DATA3);
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pdev = &davinci_mmcsd1_device;
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break;
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case 0:
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if (cpu_is_davinci_dm355()) {
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mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
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mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
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mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
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/* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
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davinci_cfg_reg(DM355_MMCSD0);
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/* enable RX EDMA */
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davinci_cfg_reg(DM355_EVT26_MMC0_RX);
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}
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else if (cpu_is_davinci_dm644x()) {
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/* REVISIT: should this be in board-init code? */
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void __iomem *base =
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IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
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/* Power-on 3.3V IO cells */
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__raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
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/*Set up the pull regiter for MMC */
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davinci_cfg_reg(DM644X_MSTK);
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}
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pdev = &davinci_mmcsd0_device;
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break;
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}
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if (WARN_ON(!pdev))
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return;
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pdev->dev.platform_data = config;
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platform_device_register(pdev);
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}
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#else
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
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{
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}
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#endif
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/*-------------------------------------------------------------------------*/
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static struct resource wdt_resources[] = {
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33
arch/arm/mach-davinci/include/mach/mmc.h
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33
arch/arm/mach-davinci/include/mach/mmc.h
Normal file
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@ -0,0 +1,33 @@
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/*
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* Board-specific MMC configuration
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*/
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#ifndef _DAVINCI_MMC_H
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#define _DAVINCI_MMC_H
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#include <linux/types.h>
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#include <linux/mmc/host.h>
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struct davinci_mmc_config {
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/* get_cd()/get_wp() may sleep */
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int (*get_cd)(int module);
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int (*get_ro)(int module);
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/* wires == 0 is equivalent to wires == 4 (4-bit parallel) */
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u8 wires;
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u32 max_freq;
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/* any additional host capabilities: OR'd in to mmc->f_caps */
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u32 caps;
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/* Version of the MMC/SD controller */
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u8 version;
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};
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void davinci_setup_mmc(int module, struct davinci_mmc_config *config);
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enum {
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MMC_CTLR_VERSION_1 = 0, /* DM644x and DM355 */
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MMC_CTLR_VERSION_2, /* DA830 */
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};
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#endif
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