Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

omap3: Fix handling some GPIO's for WLAN-BT combo on IGEP v2

Browse source 
Some GPIO's used by WLAN-BT combo on IGEP v2 depends on hardware
revision. This patch handles these GPIO's.

  ----------------------------------------------------------
 |       Hw Rev.       | WIFI_NPD | WIFI_NRESET | BT_NRESET |
  ----------------------------------------------------------
 |  B                  | gpio94  |   gpio95    |     -      |
 |  B/C (B-compatible) | gpio94  |   gpio95    |  gpio137   |
 |  C                  | gpio138 |   gpio139   |  gpio137   |
  ----------------------------------------------------------

Signed-off-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Enric Balletbo i Serra 2010-10-08 10:22:43 -07:00 committed by Tony Lindgren
parent 3f8c48d95f
commit 5a9fcc9980
1 changed files with 69 additions and 27 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

96
arch/arm/mach-omap2/board-igep0020.c
View file

@ -39,22 +39,28 @@
#define IGEP2_SMSC911X_CS 5
#define IGEP2_SMSC911X_GPIO 176
#define IGEP2_GPIO_USBH_NRESET 24
#define IGEP2_GPIO_LED0_GREEN 26
#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
#define IGEP2_GPIO_LED0_GREEN 26
#define IGEP2_GPIO_LED0_RED 27
#define IGEP2_GPIO_LED1_RED 28
#define IGEP2_GPIO_DVI_PUP 170
#define IGEP2_RB_GPIO_WIFI_NPD 94
#define IGEP2_RB_GPIO_WIFI_NRESET 95
#define IGEP2_RB_GPIO_BT_NRESET 137
#define IGEP2_RC_GPIO_WIFI_NPD 138
#define IGEP2_RC_GPIO_WIFI_NRESET 139
#define IGEP2_RC_GPIO_BT_NRESET 137
/*
* IGEP2 Hardware Revision Table
*
* --------------------------
* | Id. | Hw Rev. | HW0 (28) |
* --------------------------
* | 0 | B/C | high |
* | 1 | C | low |
* --------------------------
* --------------------------------------------------------------------------
* | Id. | Hw Rev. | HW0 (28) | WIFI_NPD | WIFI_NRESET | BT_NRESET |
* --------------------------------------------------------------------------
* | 0 | B | high | gpio94 | gpio95 | - |
* | 0 | B/C (B-compatible) | high | gpio94 | gpio95 | gpio137 |
* | 1 | C | low | gpio138 | gpio139 | gpio137 |
* --------------------------------------------------------------------------
*/
#define IGEP2_BOARD_HWREV_B 0
@ -296,12 +302,14 @@ static struct omap2_hsmmc_info mmc[] = {
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
#if defined(CONFIG_LIBERTAS_SDIO) || defined(CONFIG_LIBERTAS_SDIO_MODULE)
{
.mmc = 2,
.caps = MMC_CAP_4_BIT_DATA,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
#endif
{} /* Terminator */
};
@ -578,6 +586,50 @@ static struct omap_board_mux board_mux[] __initdata = {
#define board_mux NULL
#endif
#if defined(CONFIG_LIBERTAS_SDIO) || defined(CONFIG_LIBERTAS_SDIO_MODULE)
static void __init igep2_wlan_bt_init(void)
{
unsigned npd, wreset, btreset;
/* GPIO's for WLAN-BT combo depends on hardware revision */
if (hwrev == IGEP2_BOARD_HWREV_B) {
npd = IGEP2_RB_GPIO_WIFI_NPD;
wreset = IGEP2_RB_GPIO_WIFI_NRESET;
btreset = IGEP2_RB_GPIO_BT_NRESET;
} else if (hwrev == IGEP2_BOARD_HWREV_C) {
npd = IGEP2_RC_GPIO_WIFI_NPD;
wreset = IGEP2_RC_GPIO_WIFI_NRESET;
btreset = IGEP2_RC_GPIO_BT_NRESET;
} else
return;
/* Set GPIO's for WLAN-BT combo module */
if ((gpio_request(npd, "GPIO_WIFI_NPD") == 0) &&
(gpio_direction_output(npd, 1) == 0)) {
gpio_export(npd, 0);
} else
pr_warning("IGEP2: 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("IGEP2: 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("IGEP2: Could not obtain gpio GPIO_BT_NRESET\n");
}
#else
static inline void __init igep2_wlan_bt_init(void) { }
#endif
static void __init igep2_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
@ -596,22 +648,12 @@ static void __init igep2_init(void)
igep2_display_init();
igep2_init_smsc911x();
/* 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");
/*
* WLAN-BT combo module from MuRata wich has a Marvell WLAN
* (88W8686) + CSR Bluetooth chipset. Uses SDIO interface.
*/
igep2_wlan_bt_init();
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");
}
MACHINE_START(IGEP0020, "IGEP v2 board")