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authorMagnus Damm <damm@opensource.se>2011-10-12 16:21:50 +0900
committerPaul Mundt <lethal@linux-sh.org>2011-11-05 01:03:23 +0900
commit3087b905c4050afeb1847fb0fcf89b3e09f6ffee (patch)
tree9611d9042d03e3ab30aadafb1217a746f2e93e7a /arch/arm
parenta1993055efcc14fd6d213b936d28a41ea52e1d3d (diff)
ARM: mach-shmobile: SDHI0 GPIO hotplug for AG5EVM
Implement GPIO hotplugging via TMIO_MMC_HAS_COLD_CD for AG5EVM SDHI0. This is possible now when INTCA is used for IRQ triggering on sh73a0. Without INTCA IRQ support we are left with the GIC hardware block that does not support dealing with active low interrupt sources. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-shmobile/board-ag5evm.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index 475342bcc95c..d6e461710524 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -339,6 +339,18 @@ static struct platform_device mipidsi0_device = {
},
};
+/* SDHI0 */
+static irqreturn_t ag5evm_sdhi0_gpio_cd(int irq, void *arg)
+{
+ struct device *dev = arg;
+ struct sh_mobile_sdhi_info *info = dev->platform_data;
+ struct tmio_mmc_data *pdata = info->pdata;
+
+ tmio_mmc_cd_wakeup(pdata);
+
+ return IRQ_HANDLED;
+}
+
static struct sh_mobile_sdhi_info sdhi0_info = {
.dma_slave_tx = SHDMA_SLAVE_SDHI0_TX,
.dma_slave_rx = SHDMA_SLAVE_SDHI0_RX,
@@ -570,6 +582,13 @@ static void __init ag5evm_init(void)
gpio_request(GPIO_FN_SDHID0_1, NULL);
gpio_request(GPIO_FN_SDHID0_0, NULL);
+ if (!request_irq(intcs_evt2irq(0x3c0), ag5evm_sdhi0_gpio_cd,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "sdhi0 cd", &sdhi0_device.dev))
+ sdhi0_info.tmio_flags |= TMIO_MMC_HAS_COLD_CD;
+ else
+ pr_warn("Unable to setup SDHI0 GPIO IRQ\n");
+
/* enable SDHI1 on CN4 [WLAN I/F] */
gpio_request(GPIO_FN_SDHICLK1, NULL);
gpio_request(GPIO_FN_SDHICMD1_PU, NULL);