MIPS: Alchemy: MMC for DB1100
This patch hooks up the 2 MMC sockets on the DB1100 board. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2873/ Patchwork: https://patchwork.linux-mips.org/patch/2920/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss
Ralf Baechle
parent
f59c811f8c
commit
c9af5144ce
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@ -23,10 +23,14 @@
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/leds.h>
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#include <linux/mmc/host.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <asm/mach-au1x00/au1000_dma.h>
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#include <asm/mach-au1x00/au1100_mmc.h>
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#include <asm/mach-db1x00/bcsr.h>
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#include <asm/reboot.h>
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#include <prom.h>
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@ -194,6 +198,198 @@ static struct platform_device db1x00_audio_dev = {
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.name = "db1000-audio",
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};
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/******************************************************************************/
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static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
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{
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void (*mmc_cd)(struct mmc_host *, unsigned long);
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/* link against CONFIG_MMC=m */
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mmc_cd = symbol_get(mmc_detect_change);
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mmc_cd(ptr, msecs_to_jiffies(500));
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symbol_put(mmc_detect_change);
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return IRQ_HANDLED;
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}
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static int db1100_mmc_cd_setup(void *mmc_host, int en)
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{
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int ret = 0;
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if (en) {
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irq_set_irq_type(AU1100_GPIO19_INT, IRQ_TYPE_EDGE_BOTH);
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ret = request_irq(AU1100_GPIO19_INT, db1100_mmc_cd, 0,
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"sd0_cd", mmc_host);
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} else
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free_irq(AU1100_GPIO19_INT, mmc_host);
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return ret;
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}
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static int db1100_mmc1_cd_setup(void *mmc_host, int en)
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{
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int ret = 0;
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if (en) {
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irq_set_irq_type(AU1100_GPIO20_INT, IRQ_TYPE_EDGE_BOTH);
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ret = request_irq(AU1100_GPIO20_INT, db1100_mmc_cd, 0,
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"sd1_cd", mmc_host);
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} else
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free_irq(AU1100_GPIO20_INT, mmc_host);
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return ret;
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}
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static int db1100_mmc_card_readonly(void *mmc_host)
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{
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/* testing suggests that this bit is inverted */
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return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1;
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}
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static int db1100_mmc_card_inserted(void *mmc_host)
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{
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return !alchemy_gpio_get_value(19);
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}
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static void db1100_mmc_set_power(void *mmc_host, int state)
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{
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if (state) {
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bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
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msleep(400); /* stabilization time */
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} else
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bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
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}
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static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b)
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{
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if (b != LED_OFF)
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bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
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else
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bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
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}
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static struct led_classdev db1100_mmc_led = {
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.brightness_set = db1100_mmcled_set,
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};
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static int db1100_mmc1_card_readonly(void *mmc_host)
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{
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return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0;
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}
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static int db1100_mmc1_card_inserted(void *mmc_host)
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{
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return !alchemy_gpio_get_value(20);
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}
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static void db1100_mmc1_set_power(void *mmc_host, int state)
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{
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if (state) {
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bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR);
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msleep(400); /* stabilization time */
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} else
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bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0);
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}
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static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b)
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{
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if (b != LED_OFF)
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bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
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else
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bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
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}
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static struct led_classdev db1100_mmc1_led = {
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.brightness_set = db1100_mmc1led_set,
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};
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static struct au1xmmc_platform_data db1100_mmc_platdata[2] = {
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[0] = {
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.cd_setup = db1100_mmc_cd_setup,
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.set_power = db1100_mmc_set_power,
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.card_inserted = db1100_mmc_card_inserted,
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.card_readonly = db1100_mmc_card_readonly,
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.led = &db1100_mmc_led,
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},
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[1] = {
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.cd_setup = db1100_mmc1_cd_setup,
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.set_power = db1100_mmc1_set_power,
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.card_inserted = db1100_mmc1_card_inserted,
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.card_readonly = db1100_mmc1_card_readonly,
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.led = &db1100_mmc1_led,
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},
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};
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static struct resource au1100_mmc0_resources[] = {
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[0] = {
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.start = AU1100_SD0_PHYS_ADDR,
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.end = AU1100_SD0_PHYS_ADDR + 0xfff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AU1100_SD_INT,
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.end = AU1100_SD_INT,
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.start = DMA_ID_SD0_TX,
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.end = DMA_ID_SD0_TX,
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.flags = IORESOURCE_DMA,
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},
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[3] = {
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.start = DMA_ID_SD0_RX,
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.end = DMA_ID_SD0_RX,
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.flags = IORESOURCE_DMA,
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}
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};
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static u64 au1xxx_mmc_dmamask = DMA_BIT_MASK(32);
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static struct platform_device db1100_mmc0_dev = {
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.name = "au1xxx-mmc",
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.id = 0,
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.dev = {
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.dma_mask = &au1xxx_mmc_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &db1100_mmc_platdata[0],
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},
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.num_resources = ARRAY_SIZE(au1100_mmc0_resources),
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.resource = au1100_mmc0_resources,
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};
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static struct resource au1100_mmc1_res[] = {
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[0] = {
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.start = AU1100_SD1_PHYS_ADDR,
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.end = AU1100_SD1_PHYS_ADDR + 0xfff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AU1100_SD_INT,
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.end = AU1100_SD_INT,
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.start = DMA_ID_SD1_TX,
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.end = DMA_ID_SD1_TX,
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.flags = IORESOURCE_DMA,
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},
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[3] = {
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.start = DMA_ID_SD1_RX,
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.end = DMA_ID_SD1_RX,
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.flags = IORESOURCE_DMA,
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}
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};
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static struct platform_device db1100_mmc1_dev = {
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.name = "au1xxx-mmc",
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.id = 1,
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.dev = {
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.dma_mask = &au1xxx_mmc_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &db1100_mmc_platdata[1],
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},
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.num_resources = ARRAY_SIZE(au1100_mmc1_res),
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.resource = au1100_mmc1_res,
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};
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static struct platform_device *db1x00_devs[] = {
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&db1x00_codec_dev,
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&alchemy_ac97c_dma_dev,
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@ -203,6 +399,8 @@ static struct platform_device *db1x00_devs[] = {
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static struct platform_device *db1100_devs[] = {
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&au1100_lcd_device,
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&db1100_mmc0_dev,
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&db1100_mmc1_dev,
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};
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static int __init db1000_dev_init(void)
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@ -224,6 +422,10 @@ static int __init db1000_dev_init(void)
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d1 = AU1100_GPIO3_INT;
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s0 = AU1100_GPIO1_INT;
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s1 = AU1100_GPIO4_INT;
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gpio_direction_input(19); /* sd0 cd# */
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gpio_direction_input(20); /* sd1 cd# */
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platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
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} else if (board == BCSR_WHOAMI_DB1000) {
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c0 = AU1000_GPIO2_INT;
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