[PATCH] OMAP: omap4-panda: add WiLink shared transport power functions
From: Luciano Coelho <hidden>
Date: 2013-01-16 20:35:59
The code to enable and disable the WiLink shared transport has been removed from the TI-ST driver, so it must be implemented in the board files instead. Add the relevant operations to Panda's board file. Additionally, add the UART2 muxing data, so it's properly configured. Signed-off-by: Luciano Coelho <redacted> --- arch/arm/mach-omap2/board-omap4panda.c | 57 +++++++++++++++++++++++++++++--- 1 file changed, 53 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 5c8e9ce..97a274b 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c@@ -51,18 +51,57 @@ #define GPIO_HUB_NRESET 62 #define GPIO_WIFI_PMENA 43 #define GPIO_WIFI_IRQ 53 +#define GPIO_BT_EN 46 /* wl127x BT, FM, GPS connectivity chip */ +static int plat_kim_chip_enable(struct kim_data_s *kim_data) +{ + gpio_set_value(GPIO_BT_EN, GPIO_LOW); + mdelay(5); + gpio_set_value(GPIO_BT_EN, GPIO_HIGH); + mdelay(100); + + return 0; +} + +static int plat_kim_chip_disable(struct kim_data_s *kim_data) +{ + gpio_set_value(GPIO_BT_EN, GPIO_LOW); + mdelay(1); + gpio_set_value(GPIO_BT_EN, GPIO_HIGH); + mdelay(1); + gpio_set_value(GPIO_BT_EN, GPIO_LOW); + + return 0; +} + static struct ti_st_plat_data wilink_platform_data = { - .nshutdown_gpio = 46, .dev_name = "/dev/ttyO1", .flow_cntrl = 1, .baud_rate = 3000000, - .chip_enable = NULL, - .suspend = NULL, - .resume = NULL, + .chip_enable = plat_kim_chip_enable, + .chip_disable = plat_kim_chip_disable, }; +static int wilink_st_init(void) +{ + int status; + + status = gpio_request(GPIO_BT_EN, "kim"); + if (status) { + pr_err("%s: failed to request gpio %d\n", __func__, + GPIO_BT_EN); + return status; + } + + status = gpio_direction_output(GPIO_BT_EN, 0); + if (status) + pr_err("%s: unable to configure gpio %d", __func__, + GPIO_BT_EN); + + return status; +} + static struct platform_device wl1271_device = { .name = "kim", .id = -1,
@@ -397,6 +436,12 @@ static struct omap_board_mux board_mux[] __initdata = { OMAP_PULL_ENA), OMAP4_MUX(ABE_MCBSP1_FSX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT), + /* UART2 - BT/FM/GPS shared transport */ + OMAP4_MUX(UART2_CTS, OMAP_PIN_INPUT | OMAP_MUX_MODE0), + OMAP4_MUX(UART2_RTS, OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), + OMAP4_MUX(UART2_RX, OMAP_PIN_INPUT | OMAP_MUX_MODE0), + OMAP4_MUX(UART2_TX, OMAP_PIN_OUTPUT | OMAP_MUX_MODE0), + { .reg_offset = OMAP_MUX_TERMINATOR }, };
@@ -433,6 +478,10 @@ static void __init omap4_panda_init(void) if (ret) pr_err("error setting wl12xx data: %d\n", ret); + ret = wilink_st_init(); + if (ret) + pr_err("WiLink shared transport init failed: %d\n", ret); + omap4_panda_init_rev(); omap4_panda_i2c_init(); platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices));
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1.7.10.4