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pinctrl: msm: Replace lookup tables with math

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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>
This commit is contained in:
Stephen Boyd 2014-03-06 22:44:44 -08:00 committed by Linus Walleij
parent 5f2449d022
commit 7cc34e2e1a
1 changed files with 8 additions and 6 deletions
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14
drivers/pinctrl/pinctrl-msm.c
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@ -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]);
}