From: Madhusudhan Chikkature<madhu.cr@xxxxxx>
ARM: OMAP3: OMAP3430 SDP HSMMC2 support.
This patch adds the necessary routines to 3430 sdp hsmmc file to support slot2.
Signed-off-by: Madhusudhan Chikkature<madhu.cr@xxxxxx>
---
arch/arm/mach-omap2/board-3430sdp.c | 4
arch/arm/mach-omap2/hsmmc.c | 185 ++++++++++++++++++++++++++++++++++++
2 files changed, 189 insertions(+)
Index: linux-omap-2.6/arch/arm/mach-omap2/board-3430sdp.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/board-3430sdp.c 2008-08-11
14:57:04.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/board-3430sdp.c 2008-08-11
15:00:23.000000000 +0530
@@ -333,6 +333,10 @@ static struct omap_mmc_config sdp3430_mm
.enabled = 1,
.wire4 = 1,
},
+ .mmc [1] = {
+ .enabled = 1,
+ .wire4 = 1,
+ },
};
static struct omap_board_config_kernel sdp3430_config[] __initdata = {
Index: linux-omap-2.6/arch/arm/mach-omap2/hsmmc.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/hsmmc.c 2008-08-11
14:57:04.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/hsmmc.c 2008-08-13 09:35:21.000000000 +0530
@@ -33,8 +33,11 @@
#define LDO_CLR 0x00
#define VSEL_S2_CLR 0x40
#define GPIO_0_BIT_POS (1 << 0)
+#define GPIO_1_BIT_POS (1 << 1)
#define MMC1_CD_IRQ 0
#define MMC2_CD_IRQ 1
+#define VMMC2_DEV_GRP 0x2B
+#define VMMC2_DEDICATED 0x2E
#define OMAP2_CONTROL_DEVCONF0 0x48002274
#define OMAP2_CONTROL_DEVCONF1 0x490022E8
@@ -86,6 +89,41 @@ err:
return ret;
}
+/*
+ * MMC2 Slot Initialization.
+ */
+static int hsmmc2_late_init(struct device *dev)
+{
+ int ret = 0;
+
+ /*
+ * Configure TWL4030 GPIO parameters for MMC2 hotplug irq
+ */
+ ret = twl4030_request_gpio(MMC2_CD_IRQ);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_set_gpio_edge_ctrl(MMC2_CD_IRQ,
+ TWL4030_GPIO_EDGE_RISING | TWL4030_GPIO_EDGE_FALLING);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0x02,
+ TWL_GPIO_PUPDCTR1);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_set_gpio_debounce(MMC2_CD_IRQ, TWL4030_GPIO_IS_ENABLE);
+ if (ret != 0)
+ goto err;
+
+ return ret;
+err:
+ dev_err(dev, "Failed to configure TWL4030 GPIO IRQ\n");
+
+ return ret;
+}
+
static void hsmmc_cleanup(struct device *dev)
{
int ret = 0;
@@ -95,6 +133,15 @@ static void hsmmc_cleanup(struct device
dev_err(dev, "Failed to configure TWL4030 GPIO IRQ\n");
}
+static void hsmmc2_cleanup(struct device *dev)
+{
+ int ret = 0;
+
+ ret = twl4030_free_gpio(MMC2_CD_IRQ);
+ if (ret != 0)
+ dev_err(dev, "Failed to configure TWL4030 GPIO IRQ\n");
+}
+
#ifdef CONFIG_PM
/*
@@ -140,6 +187,48 @@ static int hsmmc_suspend(struct device *
return ret;
}
+/*
+ * To mask and unmask MMC Card Detect Interrupt
+ * mask : 1
+ * unmask : 0
+ */
+static int mask_cd2_interrupt(int mask)
+{
+ u8 reg = 0, ret = 0;
+
+ ret = twl4030_i2c_read_u8(TWL4030_MODULE_GPIO, ®, TWL_GPIO_IMR1A);
+ if (ret != 0)
+ goto err;
+
+ reg = (mask == 1) ? (reg | GPIO_1_BIT_POS) : (reg & ~GPIO_1_BIT_POS);
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, reg, TWL_GPIO_IMR1A);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_i2c_read_u8(TWL4030_MODULE_GPIO, ®, TWL_GPIO_ISR1A);
+ if (ret != 0)
+ goto err;
+
+ reg = (mask == 1) ? (reg | GPIO_1_BIT_POS) : (reg & ~GPIO_1_BIT_POS);
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, reg, TWL_GPIO_ISR1A);
+ if (ret != 0)
+ goto err;
+err:
+ return ret;
+}
+
+static int hsmmc2_suspend(struct device *dev, int slot)
+{
+ int ret = 0;
+
+ disable_irq(TWL4030_GPIO_IRQ_NO(MMC2_CD_IRQ));
+ ret = mask_cd2_interrupt(1);
+
+ return ret;
+}
+
static int hsmmc_resume(struct device *dev, int slot)
{
int ret = 0;
@@ -150,6 +239,15 @@ static int hsmmc_resume(struct device *d
return ret;
}
+static int hsmmc2_resume(struct device *dev, int slot)
+{
+ int ret = 0;
+
+ enable_irq(TWL4030_GPIO_IRQ_NO(MMC2_CD_IRQ));
+ ret = mask_cd2_interrupt(0);
+
+ return ret;
+}
#endif
static int hsmmc_set_power(struct device *dev, int slot, int power_on,
@@ -255,6 +353,70 @@ err:
return 1;
}
+static int hsmmc2_set_power(struct device *dev, int slot, int power_on,
+ int vdd)
+{
+ u32 vdd_sel = 0, devconf = 0;
+ int ret = 0;
+
+ if (power_on == 1) {
+ if (cpu_is_omap24xx())
+ devconf = omap_readl(0x490022E8);
+ else
+ devconf = omap_readl(0x480022D8);
+
+ switch (1 << vdd) {
+ case MMC_VDD_33_34:
+ case MMC_VDD_32_33:
+ vdd_sel = VSEL_3V;
+ if (cpu_is_omap24xx())
+ devconf = (devconf | (1 << 31));
+ break;
+ case MMC_VDD_165_195:
+ vdd_sel = VSEL_18V;
+ if (cpu_is_omap24xx())
+ devconf = (devconf & ~(1 << 31));
+ }
+
+ if (cpu_is_omap24xx())
+ omap_writel(devconf, 0x490022E8);
+ else
+ omap_writel(devconf | 1 << 6, 0x480022D8);
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ P1_DEV_GRP, VMMC2_DEV_GRP);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ 0x05, VMMC2_DEDICATED);
+ if (ret != 0)
+ goto err;
+
+ return ret;
+
+ } else if (power_on == 0) {
+
+ /* Power OFF */
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ LDO_CLR, VMMC2_DEV_GRP);
+ if (ret != 0)
+ goto err;
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ VSEL_S2_CLR, VMMC2_DEDICATED);
+ if (ret != 0)
+ goto err;
+ } else {
+ ret = -1;
+ goto err;
+ }
+
+ return 0;
+err:
+ return 1;
+}
+
static struct omap_mmc_platform_data hsmmc_data = {
.nr_slots = 1,
.switch_slot = NULL,
@@ -278,9 +440,32 @@ static struct omap_mmc_platform_data hsm
},
};
+static struct omap_mmc_platform_data hsmmc2_data = {
+ .nr_slots = 1,
+ .switch_slot = NULL,
+ .init = hsmmc2_late_init,
+ .cleanup = hsmmc2_cleanup,
+#ifdef CONFIG_PM
+ .suspend = hsmmc2_suspend,
+ .resume = hsmmc2_resume,
+#endif
+ .slots[0] = {
+ .set_power = hsmmc2_set_power,
+ .set_bus_mode = NULL,
+ .get_ro = NULL,
+ .get_cover_state = NULL,
+ .ocr_mask = MMC_VDD_165_195,
+ .name = "first slot",
+
+ .card_detect_irq = TWL4030_GPIO_IRQ_NO(MMC2_CD_IRQ),
+ .card_detect = hsmmc_card_detect,
+ },
+};
+
void __init hsmmc_init(void)
{
omap_set_mmc_info(1, &hsmmc_data);
+ omap_set_mmc_info(2, &hsmmc2_data);
}
#else
--
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