diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1000.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c index 57ed5f1c4919..a3a448033037 100644 --- a/arch/mips/alchemy/devboards/db1000.c +++ b/arch/mips/alchemy/devboards/db1000.c @@ -23,10 +23,14 @@ #include <linux/gpio.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/leds.h> +#include <linux/mmc/host.h> +#include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <asm/mach-au1x00/au1000.h> #include <asm/mach-au1x00/au1000_dma.h> +#include <asm/mach-au1x00/au1100_mmc.h> #include <asm/mach-db1x00/bcsr.h> #include <asm/reboot.h> #include <prom.h> @@ -194,6 +198,198 @@ static struct platform_device db1x00_audio_dev = { .name = "db1000-audio", }; +/******************************************************************************/ + +static irqreturn_t db1100_mmc_cd(int irq, void *ptr) +{ + void (*mmc_cd)(struct mmc_host *, unsigned long); + /* link against CONFIG_MMC=m */ + mmc_cd = symbol_get(mmc_detect_change); + mmc_cd(ptr, msecs_to_jiffies(500)); + symbol_put(mmc_detect_change); + + return IRQ_HANDLED; +} + +static int db1100_mmc_cd_setup(void *mmc_host, int en) +{ + int ret = 0; + + if (en) { + irq_set_irq_type(AU1100_GPIO19_INT, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(AU1100_GPIO19_INT, db1100_mmc_cd, 0, + "sd0_cd", mmc_host); + } else + free_irq(AU1100_GPIO19_INT, mmc_host); + return ret; +} + +static int db1100_mmc1_cd_setup(void *mmc_host, int en) +{ + int ret = 0; + + if (en) { + irq_set_irq_type(AU1100_GPIO20_INT, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(AU1100_GPIO20_INT, db1100_mmc_cd, 0, + "sd1_cd", mmc_host); + } else + free_irq(AU1100_GPIO20_INT, mmc_host); + return ret; +} + +static int db1100_mmc_card_readonly(void *mmc_host) +{ + /* testing suggests that this bit is inverted */ + return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1; +} + +static int db1100_mmc_card_inserted(void *mmc_host) +{ + return !alchemy_gpio_get_value(19); +} + +static void db1100_mmc_set_power(void *mmc_host, int state) +{ + if (state) { + bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR); + msleep(400); /* stabilization time */ + } else + bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0); +} + +static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b) +{ + if (b != LED_OFF) + bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0); + else + bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0); +} + +static struct led_classdev db1100_mmc_led = { + .brightness_set = db1100_mmcled_set, +}; + +static int db1100_mmc1_card_readonly(void *mmc_host) +{ + return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0; +} + +static int db1100_mmc1_card_inserted(void *mmc_host) +{ + return !alchemy_gpio_get_value(20); +} + +static void db1100_mmc1_set_power(void *mmc_host, int state) +{ + if (state) { + bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR); + msleep(400); /* stabilization time */ + } else + bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0); +} + +static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b) +{ + if (b != LED_OFF) + bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0); + else + bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1); +} + +static struct led_classdev db1100_mmc1_led = { + .brightness_set = db1100_mmc1led_set, +}; + +static struct au1xmmc_platform_data db1100_mmc_platdata[2] = { + [0] = { + .cd_setup = db1100_mmc_cd_setup, + .set_power = db1100_mmc_set_power, + .card_inserted = db1100_mmc_card_inserted, + .card_readonly = db1100_mmc_card_readonly, + .led = &db1100_mmc_led, + }, + [1] = { + .cd_setup = db1100_mmc1_cd_setup, + .set_power = db1100_mmc1_set_power, + .card_inserted = db1100_mmc1_card_inserted, + .card_readonly = db1100_mmc1_card_readonly, + .led = &db1100_mmc1_led, + }, +}; + +static struct resource au1100_mmc0_resources[] = { + [0] = { + .start = AU1100_SD0_PHYS_ADDR, + .end = AU1100_SD0_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1100_SD_INT, + .end = AU1100_SD_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = DMA_ID_SD0_TX, + .end = DMA_ID_SD0_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = DMA_ID_SD0_RX, + .end = DMA_ID_SD0_RX, + .flags = IORESOURCE_DMA, + } +}; + +static u64 au1xxx_mmc_dmamask = DMA_BIT_MASK(32); + +static struct platform_device db1100_mmc0_dev = { + .name = "au1xxx-mmc", + .id = 0, + .dev = { + .dma_mask = &au1xxx_mmc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1100_mmc_platdata[0], + }, + .num_resources = ARRAY_SIZE(au1100_mmc0_resources), + .resource = au1100_mmc0_resources, +}; + +static struct resource au1100_mmc1_res[] = { + [0] = { + .start = AU1100_SD1_PHYS_ADDR, + .end = AU1100_SD1_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AU1100_SD_INT, + .end = AU1100_SD_INT, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = DMA_ID_SD1_TX, + .end = DMA_ID_SD1_TX, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = DMA_ID_SD1_RX, + .end = DMA_ID_SD1_RX, + .flags = IORESOURCE_DMA, + } +}; + +static struct platform_device db1100_mmc1_dev = { + .name = "au1xxx-mmc", + .id = 1, + .dev = { + .dma_mask = &au1xxx_mmc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1100_mmc_platdata[1], + }, + .num_resources = ARRAY_SIZE(au1100_mmc1_res), + .resource = au1100_mmc1_res, +}; + + static struct platform_device *db1x00_devs[] = { &db1x00_codec_dev, &alchemy_ac97c_dma_dev, @@ -203,6 +399,8 @@ static struct platform_device *db1x00_devs[] = { static struct platform_device *db1100_devs[] = { &au1100_lcd_device, + &db1100_mmc0_dev, + &db1100_mmc1_dev, }; static int __init db1000_dev_init(void) @@ -224,6 +422,10 @@ static int __init db1000_dev_init(void) d1 = AU1100_GPIO3_INT; s0 = AU1100_GPIO1_INT; s1 = AU1100_GPIO4_INT; + + gpio_direction_input(19); /* sd0 cd# */ + gpio_direction_input(20); /* sd1 cd# */ + platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs)); } else if (board == BCSR_WHOAMI_DB1000) { c0 = AU1000_GPIO2_INT; |