diff options
| author | Preetham Chandru <pchandru@nvidia.com> | 2011-11-29 17:53:13 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-08 16:54:46 +0530 |
| commit | b9acd4bb941790c9e654e031d9818b35e74b0256 (patch) | |
| tree | 3f120570abcb5d73edfca274934892eb4067b715 /arch/arm/mach-tegra/board-harmony-pinmux.c | |
| parent | d6f914ce0a6043b8fcbe642b826eeea3a4d3d4cf (diff) | |
tegra: harmony: wifi: add board support for WiFi
The SDIO WiFi module requires power from external PMU and 1.2V regulator.
The module gets powered on if - (1) all power sources are enabled, and
(2) power (down) and reset (down) pins are enabled as per spec.
To enable mmc/SDIO driver to detect the WiFi hardware, the WiFi chip has
to be powered-up before mmc driver does probing. So, steps should be as
following: (1) required regulators are on, (2) power/reset of WiFi are
enabled, (3) mmc does probing. Later time, when WiFi driver module is
loaded and registers with SDIO, the SDIO driver knows which H/W the driver
has to be associated with.
Bug: 908534
Change-Id: I6510bced5fa9b8b3314c00180f2694903b23145c
Reviewed-on: http://git-master/r/#change,47808,patchset=2
Signed-off-by: Preetham Chandru <pchandru@nvidia.com>
Reviewed-on: http://git-master/r/67121
Reviewed-by: Mursalin Akon <makon@nvidia.com>
Reviewed-by: Allen Martin <amartin@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/board-harmony-pinmux.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-harmony-pinmux.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/arch/arm/mach-tegra/board-harmony-pinmux.c b/arch/arm/mach-tegra/board-harmony-pinmux.c index 8a911f0cc62b..2fa64cff58f3 100644 --- a/arch/arm/mach-tegra/board-harmony-pinmux.c +++ b/arch/arm/mach-tegra/board-harmony-pinmux.c @@ -22,6 +22,22 @@ #include "gpio-names.h" #include "board-harmony.h" +#define DEFAULT_DRIVE(_name) \ + { \ + .pingroup = TEGRA_DRIVE_PINGROUP_##_name, \ + .hsm = TEGRA_HSM_DISABLE, \ + .schmitt = TEGRA_SCHMITT_ENABLE, \ + .drive = TEGRA_DRIVE_DIV_1, \ + .pull_down = TEGRA_PULL_31, \ + .pull_up = TEGRA_PULL_31, \ + .slew_rising = TEGRA_SLEW_SLOWEST, \ + .slew_falling = TEGRA_SLEW_SLOWEST, \ + } + +static __initdata struct tegra_drive_pingroup_config harmony_drive_pinmux[] = { + DEFAULT_DRIVE(SDIO1), +}; + static __initdata struct tegra_pingroup_config harmony_pinmux[] = { {TEGRA_PINGROUP_ATA, TEGRA_MUX_IDE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_ATB, TEGRA_MUX_SDIO4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, @@ -108,13 +124,13 @@ static __initdata struct tegra_pingroup_config harmony_pinmux[] = { {TEGRA_PINGROUP_SDB, TEGRA_MUX_PWM, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, {TEGRA_PINGROUP_SDC, TEGRA_MUX_PWM, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_SDD, TEGRA_MUX_PWM, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, - {TEGRA_PINGROUP_SDIO1, TEGRA_MUX_SDIO1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SDIO1, TEGRA_MUX_SDIO1, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_SLXA, TEGRA_MUX_PCIE, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, {TEGRA_PINGROUP_SLXC, TEGRA_MUX_SPDIF, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, {TEGRA_PINGROUP_SLXD, TEGRA_MUX_SPDIF, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, {TEGRA_PINGROUP_SLXK, TEGRA_MUX_PCIE, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, - {TEGRA_PINGROUP_SPDI, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, - {TEGRA_PINGROUP_SPDO, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPDI, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_SPDO, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_SPIA, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_SPIB, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, {TEGRA_PINGROUP_SPIC, TEGRA_MUX_GMI, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, @@ -157,6 +173,8 @@ static struct tegra_gpio_table gpio_table[] = { void __init harmony_pinmux_init(void) { tegra_pinmux_config_table(harmony_pinmux, ARRAY_SIZE(harmony_pinmux)); + tegra_drive_pinmux_config_table(harmony_drive_pinmux, + ARRAY_SIZE(harmony_drive_pinmux)); tegra_gpio_config(gpio_table, ARRAY_SIZE(gpio_table)); } |