RE: Re: Ping-> Subject: [PATCH] omap: omap3evm: add support for the WL12xx WLAN module to the omap3evm

Reizer, Eyal
2011-02-24T07:27:07Z

Adds platform initialization for working with the WLAN module
attached to the omap3evm.
The patch includes MMC2 initialization, SDIO and control pins
muxing and platform device registration.

Signed-off-by: Eyal Reizer <eyalr@ti.com>
---
arch/arm/mach-omap2/board-omap3evm.c | 74 ++++++++++++++++++++++++++++++++++
1 files changed, 74 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 323c380..349aac9 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 @@ static struct omap2_hsmmc_info mmc[] = {
.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 +550,47 @@ static struct regulator_init_data omap3_evm_vpll2 = {
.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 =
+ REGULATOR_SUPPLY("vmmc", "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_wlan_regulator = {
+ .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),
+ .board_ref_clock = 2, /* ref clock is 38.4 MHz */
+};
+#endif
+
static struct twl4030_platform_data omap3evm_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
@@ -658,6 +711,21 @@ static struct omap_board_mux board_mux[] __initdata = {
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),
+
+ /* 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
@@ -715,6 +783,12 @@ static void __init omap3_evm_init(void)
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_wlan_regulator);
+#endif
}

MACHINE_START(OMAP3EVM, "OMAP3 EVM")
--
1.7.0.4