From e34d9fdac8182f6ce8933501fea6e84664060bf0 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 6 Mar 2014 22:44:44 -0800 Subject: [PATCH 030/182] 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 Acked-by: Bjorn Andersson Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-msm.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/pinctrl-msm.c b/drivers/pinctrl/pinctrl-msm.c index 4474e00..87f6c3c 100644 --- a/drivers/pinctrl/pinctrl-msm.c +++ b/drivers/pinctrl/pinctrl-msm.c @@ -258,8 +258,10 @@ 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, @@ -296,7 +298,7 @@ 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; default: dev_err(pctrl->dev, "Unsupported config parameter: %x\n", @@ -349,10 +351,10 @@ 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; default: dev_err(pctrl->dev, "Unsupported config parameter: %x\n", @@ -531,7 +533,7 @@ 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]); } -- 1.7.10.4