diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2014-03-06 22:44:44 -0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-03-12 15:12:28 +0100 |
| commit | 7cc34e2e1a003bc7002868f51678d6fc6e7aeb85 (patch) | |
| tree | 8d9fb316e39fc4adc2ea3c290e45812bdd65d96b /drivers/pinctrl | |
| parent | 5f2449d0228048a4c7103672187126c5c7d78d08 (diff) | |
| download | linux-7cc34e2e1a003bc7002868f51678d6fc6e7aeb85.tar.gz | |
pinctrl: msm: Replace lookup tables with math
We don't need to waste space with these lookup tables, just do the math directly. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-msm.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/pinctrl/pinctrl-msm.c b/drivers/pinctrl/pinctrl-msm.c index b6eb88cf124f..4527e8d1ea9a 100644 --- a/drivers/pinctrl/pinctrl-msm.c +++ b/drivers/pinctrl/pinctrl-msm.c @@ -263,8 +263,10 @@ static int msm_config_set(struct pinctrl_dev *pctldev, unsigned int pin, #define MSM_PULL_DOWN 1 #define MSM_PULL_UP 3 -static const unsigned msm_regval_to_drive[] = { 2, 4, 6, 8, 10, 12, 14, 16 }; -static const unsigned msm_drive_to_regval[] = { -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, 5, -1, 6, -1, 7 }; +static unsigned msm_regval_to_drive(u32 val) +{ + return (val + 1) * 2; +} static int msm_config_group_get(struct pinctrl_dev *pctldev, unsigned int group, @@ -301,7 +303,7 @@ static int msm_config_group_get(struct pinctrl_dev *pctldev, arg = arg == MSM_PULL_UP; break; case PIN_CONFIG_DRIVE_STRENGTH: - arg = msm_regval_to_drive[arg]; + arg = msm_regval_to_drive(arg); break; case PIN_CONFIG_OUTPUT: /* Pin is not output */ @@ -362,10 +364,10 @@ static int msm_config_group_set(struct pinctrl_dev *pctldev, break; case PIN_CONFIG_DRIVE_STRENGTH: /* Check for invalid values */ - if (arg >= ARRAY_SIZE(msm_drive_to_regval)) + if (arg > 16 || arg < 2 || (arg % 2) != 0) arg = -1; else - arg = msm_drive_to_regval[arg]; + arg = (arg / 2) - 1; break; case PIN_CONFIG_OUTPUT: /* set output value */ @@ -558,7 +560,7 @@ static void msm_gpio_dbg_show_one(struct seq_file *s, pull = (ctl_reg >> g->pull_bit) & 3; seq_printf(s, " %-8s: %-3s %d", g->name, is_out ? "out" : "in", func); - seq_printf(s, " %dmA", msm_regval_to_drive[drive]); + seq_printf(s, " %dmA", msm_regval_to_drive(drive)); seq_printf(s, " %s", pulls[pull]); } |