diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2014-05-29 17:54:41 +0530 |
|---|---|---|
| committer | Matthew Pedro <mapedro@nvidia.com> | 2014-09-15 10:24:53 -0700 |
| commit | c139c50c560df7e178beb83b603e499dd3652678 (patch) | |
| tree | 7daf16a8d927d1f67a065ebcb6848edc819a19ec | |
| parent | b23c65a950883b6cbc16bb5a35ad856fe0ef6b09 (diff) | |
pinctrl: tegra: set tristate =1 and input =0 for unused pins
Set the tristate bit to 1 and e_input to 0 for unused pins
to set it on low power and avoid conflict with any other pins.
Bug 200033491
Change-Id: If83f6129dbf6c6fe28a7a7c596e5a3858a894914
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/416649
(cherry picked from commit 7e81b36f87cffdc5d473a39735877a1432ac3151)
Reviewed-on: http://git-master/r/498328
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>
| -rw-r--r-- | drivers/pinctrl/pinctrl-tegra.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c index 77970f48e49f..5f3a11016d85 100644 --- a/drivers/pinctrl/pinctrl-tegra.c +++ b/drivers/pinctrl/pinctrl-tegra.c @@ -58,6 +58,9 @@ struct tegra_pmx { static struct tegra_pmx *pmx; +static int tegra_pinconf_group_set(struct pinctrl_dev *pctldev, + unsigned group, unsigned long config); + static inline u32 pmx_readl(struct tegra_pmx *pmx, u32 bank, u32 reg) { return readl(pmx->regs[bank] + reg); @@ -370,6 +373,21 @@ static int tegra_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, return 0; } +static int tegra_pinconfig_froup_set(struct pinctrl_dev *pctldev, + unsigned group, unsigned long param, unsigned long arg) +{ + unsigned long config; + int ret; + + config = TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, arg); + ret = tegra_pinconf_group_set(pctldev, group, config); + if (ret < 0) + dev_err(pctldev->dev, + "Pinctrl group %u tristate config failed: %d\n", + group, ret); + return ret; +} + static int tegra_pinctrl_enable(struct pinctrl_dev *pctldev, unsigned req_function, unsigned group) { @@ -379,6 +397,7 @@ static int tegra_pinctrl_enable(struct pinctrl_dev *pctldev, unsigned req_functi int i; u32 val; unsigned long flags; + int ret; g = &pmx->soc->groups[group]; |