From: Enric Balletbo i Serra <eballetbo@xxxxxxxxxxx>
This patch adds support to detect IGEP v2 hardware revision and configure
GPIO's for W-LAN + Bluetooth combo which depends on hardware revision.
Signed-off-by: Enric Balletbo i Serra <eballetbo@xxxxxxxxx>
---
arch/arm/mach-omap2/board-igep0020.c | 99 +++++++++++++++++++++++++++-------
1 files changed, 80 insertions(+), 19 deletions(-)
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index d55c57b..6b5f9c8 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -42,8 +42,19 @@
#define IGEP2_GPIO_LED0_RED 27
#define IGEP2_GPIO_LED1_RED 28
#define IGEP2_GPIO_DVI_PUP 170
-#define IGEP2_GPIO_WIFI_NPD 94
-#define IGEP2_GPIO_WIFI_NRESET 95
+
+/* HIGH : It is a rev. B or C (B-compatible) board
+ LOW : It is a rev. C (B-NON compatible) board */
+#define IGEP2_GPIO_HW_REV 28
+
+/* Platform: IGEP v2 Hw Rev. B / C (B-compatible) */
+#define IGEP2_RB_GPIO_WIFI_NPD 94
+#define IGEP2_RB_GPIO_WIFI_NRESET 95
+#define IGEP2_RB_GPIO_BT_NRESET 137
+/* Platform: IGEP v2 Hw Rev. C (B-non compatible) */
+#define IGEP2_RC_GPIO_WIFI_NPD 138
+#define IGEP2_RC_GPIO_WIFI_NRESET 139
+#define IGEP2_RC_GPIO_BT_NRESET 137
#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
@@ -476,8 +487,66 @@ static struct omap_board_mux board_mux[] __initdata = {
#define board_mux NULL
#endif
+static int igep2_get_hw_rev(void)
+{
+ int ret = -1;
+
+ if ((gpio_request(IGEP2_GPIO_HW_REV, "GPIO_HW_REV") == 0) &&
+ (gpio_direction_input(IGEP2_GPIO_HW_REV) == 0))
+ ret = gpio_get_value(IGEP2_GPIO_HW_REV);
+ else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_HW_REV\n");
+
+ gpio_free(IGEP2_GPIO_HW_REV);
+
+ return ret;
+}
+
+static void __init igep2_init_wifi_bt(void)
+{
+ int hwrev;
+ unsigned npd, wreset, btreset;
+
+ hwrev = igep2_get_hw_rev();
+
+ /* GPIO's for W-LAN + Bluetooth combo depends on hardware revision */
+ if (hwrev) {
+ npd = IGEP2_RB_GPIO_WIFI_NPD;
+ wreset = IGEP2_RB_GPIO_WIFI_NRESET;
+ btreset = IGEP2_RB_GPIO_BT_NRESET;
+ } else {
+ npd = IGEP2_RC_GPIO_WIFI_NPD;
+ wreset = IGEP2_RC_GPIO_WIFI_NRESET;
+ btreset = IGEP2_RC_GPIO_BT_NRESET;
+ }
+
+ /* Set GPIO's for W-LAN + Bluetooth combo module */
+ if ((gpio_request(npd, "GPIO_WIFI_NPD") == 0) &&
+ (gpio_direction_output(npd, 1) == 0)) {
+ gpio_export(npd, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_WIFI_NPD\n");
+
+ if ((gpio_request(wreset, "GPIO_WIFI_NRESET") == 0) &&
+ (gpio_direction_output(wreset, 1) == 0)) {
+ gpio_export(wreset, 0);
+ gpio_set_value(wreset, 0);
+ udelay(10);
+ gpio_set_value(wreset, 1);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_WIFI_NRESET\n");
+
+ if ((gpio_request(btreset, "GPIO_BT_NRESET") == 0) &&
+ (gpio_direction_output(btreset, 1) == 0)) {
+ gpio_export(btreset, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_BT_NRESET\n");
+}
+
static void __init igep2_init(void)
{
+ int hwrev;
+
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
igep2_i2c_init();
platform_add_devices(igep2_devices, ARRAY_SIZE(igep2_devices));
@@ -485,10 +554,19 @@ static void __init igep2_init(void)
usb_musb_init(&musb_board_data);
usb_ehci_init(&ehci_pdata);
+ hwrev = igep2_get_hw_rev();
+ if (hwrev == 0)
+ pr_info("IGEP platform: IGEP v2 Hw Rev. C (B-NON compatible)\n");
+ else if (hwrev == 1)
+ pr_info("IGEP platform: IGEP v2 Hw Rev. B/C (B compatible)\n");
+ else
+ pr_err("IGEP platform: Unknow\n");
+
igep2_flash_init();
igep2_init_led();
igep2_display_init();
igep2_init_smsc911x();
+ igep2_init_wifi_bt();
/* GPIO userspace leds */
#if !defined(CONFIG_LEDS_GPIO) && !defined(CONFIG_LEDS_GPIO_MODULE)
@@ -513,23 +591,6 @@ static void __init igep2_init(void)
} else
pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_RED\n");
#endif
-
- /* GPIO W-LAN + Bluetooth combo module */
- if ((gpio_request(IGEP2_GPIO_WIFI_NPD, "GPIO_WIFI_NPD") == 0) &&
- (gpio_direction_output(IGEP2_GPIO_WIFI_NPD, 1) == 0)) {
- gpio_export(IGEP2_GPIO_WIFI_NPD, 0);
-/* gpio_set_value(IGEP2_GPIO_WIFI_NPD, 0); */
- } else
- pr_warning("IGEP v2: Could not obtain gpio GPIO_WIFI_NPD\n");
-
- if ((gpio_request(IGEP2_GPIO_WIFI_NRESET, "GPIO_WIFI_NRESET") == 0) &&
- (gpio_direction_output(IGEP2_GPIO_WIFI_NRESET, 1) == 0)) {
- gpio_export(IGEP2_GPIO_WIFI_NRESET, 0);
- gpio_set_value(IGEP2_GPIO_WIFI_NRESET, 0);
- udelay(10);
- gpio_set_value(IGEP2_GPIO_WIFI_NRESET, 1);
- } else
- pr_warning("IGEP v2: Could not obtain gpio GPIO_WIFI_NRESET\n");
}
static void __init igep2_map_io(void)
--
1.7.0.4
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