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.
Cc: stable <stable@xxxxxxxxxxxxxxx> [3.7]
Signed-off-by: Luciano Coelho <coelho@xxxxxx>
---
In v2: use gpio_request_one() instead of gpio_request() and
gpio_direction_output(). (Thanks Fabio!)
arch/arm/mach-omap2/board-omap4panda.c | 50 +++++++++++++++++++++++++++++---
1 file changed, 46 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 5c8e9ce..f44fccf 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -51,18 +51,50 @@
#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_one(GPIO_BT_EN, GPIOF_OUT_INIT_LOW, "kim");
+ if (status)
+ pr_err("%s: failed to request gpio %d\n", __func__,
+ GPIO_BT_EN);
+
+ return status;
+}
+
static struct platform_device wl1271_device = {
.name = "kim",
.id = -1,
@@ -397,6 +429,12 @@ 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 +471,10 @@ 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));
--
1.7.10.4
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