diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0030-pinctrl-msm-Replace-lookup-tables-with-math.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0030-pinctrl-msm-Replace-lookup-tables-with-math.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0030-pinctrl-msm-Replace-lookup-tables-with-math.patch b/target/linux/ipq806x/patches/0030-pinctrl-msm-Replace-lookup-tables-with-math.patch new file mode 100644 index 0000000000..975e11a052 --- /dev/null +++ b/target/linux/ipq806x/patches/0030-pinctrl-msm-Replace-lookup-tables-with-math.patch @@ -0,0 +1,66 @@ +From e34d9fdac8182f6ce8933501fea6e84664060bf0 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +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 <sboyd@codeaurora.org> +Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> +Signed-off-by: Linus Walleij <linus.walleij@linaro.org> +--- + 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 + |