omap3evm: add support for the WL12xx WLAN module to the AM/DM3xx Evaluation Module
Adds platform initialization for working with the WLAN module attached to the evaluation module.
The patch includes MMC2 initialization, SDIO and control pins muxing and platform device registration
Signed-off-by: Eyal Reizer <eyalr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index c2a0fca..ac50bf9 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -30,6 +30,8 @@
#include <linux/usb/otg.h>
#include <linux/smsc911x.h>
+#include <linux/wl12xx.h>
+#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/mmc/host.h>
@@ -381,6 +383,16 @@
.gpio_cd = -EINVAL,
.gpio_wp = 63,
},
+#ifdef CONFIG_WL12XX_PLATFORM_DATA
+ {
+ .name = "wl1271",
+ .mmc = 2,
+ .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
+ .gpio_wp = -EINVAL,
+ .gpio_cd = -EINVAL,
+ .nonremovable = true,
+ },
+#endif
{} /* Terminator */
};
@@ -538,6 +550,50 @@
.consumer_supplies = &omap3_evm_vpll2_supply,
};
+#ifdef CONFIG_WL12XX_PLATFORM_DATA
+
+#define OMAP3EVM_WLAN_PMENA_GPIO (150)
+#define OMAP3EVM_WLAN_IRQ_GPIO (149)
+
+static struct regulator_consumer_supply omap3evm_vmmc2_supply = {
+ .supply = "vmmc",
+ .dev_name = "mmci-omap-hs.1",
+};
+
+/* VMMC2 for driving the WL12xx module */
+static struct regulator_init_data omap3evm_vmmc2 = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = 1,
+ .consumer_supplies = &omap3evm_vmmc2_supply,
+};
+
+static struct fixed_voltage_config omap3evm_vwlan = {
+ .supply_name = "vwl1271",
+ .microvolts = 1800000, /* 1.80V */
+ .gpio = OMAP3EVM_WLAN_PMENA_GPIO,
+ .startup_delay = 70000, /* 70ms */
+ .enable_high = 1,
+ .enabled_at_boot = 0,
+ .init_data = &omap3evm_vmmc2,
+};
+
+static struct platform_device omap3evm_vwlan_device = {
+ .name = "reg-fixed-voltage",
+ .id = 1,
+ .dev = {
+ .platform_data = &omap3evm_vwlan,
+ },
+};
+
+struct wl12xx_platform_data omap3evm_wlan_data __initdata = {
+ .irq = OMAP_GPIO_IRQ(OMAP3EVM_WLAN_IRQ_GPIO),
+ /* ref clock is 38.4 MHz */
+ .board_ref_clock = 2,
+};
+#endif
+
static struct twl4030_platform_data omap3evm_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
@@ -657,6 +713,21 @@
OMAP_PIN_OFF_WAKEUPENABLE),
OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
OMAP_PIN_OFF_INPUT_PULLUP | OMAP_PIN_OFF_OUTPUT_LOW),
+#ifdef CONFIG_WL12XX_PLATFORM_DATA
+ /* WLAN IRQ - GPIO 149 */
+ OMAP3_MUX(UART1_RTS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP),
+
+ /* WLAN POWER ENABLE - GPIO 150 */
+ OMAP3_MUX(UART1_CTS, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+
+ /* MMC2 SDIO pin muxes for WL12xx */
+ OMAP3_MUX(SDMMC2_CLK, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+ OMAP3_MUX(SDMMC2_CMD, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+ OMAP3_MUX(SDMMC2_DAT0, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+ OMAP3_MUX(SDMMC2_DAT1, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+ OMAP3_MUX(SDMMC2_DAT2, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+ OMAP3_MUX(SDMMC2_DAT3, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP),
+#endif
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif
@@ -714,6 +785,13 @@
ads7846_dev_init();
omap3evm_init_smsc911x();
omap3_evm_display_init();
+
+#ifdef CONFIG_WL12XX_PLATFORM_DATA
+ /* WL12xx WLAN Init */
+ if (wl12xx_set_platform_data(&omap3evm_wlan_data))
+ pr_err("error setting wl12xx data\n");
+ platform_device_register(&omap3evm_vwlan_device);
+#endif
}
MACHINE_START(OMAP3EVM, "OMAP3 EVM")