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67 lines
2.3 KiB
67 lines
2.3 KiB
10 years ago
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From e34d9fdac8182f6ce8933501fea6e84664060bf0 Mon Sep 17 00:00:00 2001
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From: Stephen Boyd <sboyd@codeaurora.org>
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Date: Thu, 6 Mar 2014 22:44:44 -0800
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Subject: [PATCH 030/182] pinctrl: msm: Replace lookup tables with math
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We don't need to waste space with these lookup tables, just do
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the math directly.
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Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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---
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drivers/pinctrl/pinctrl-msm.c | 14 ++++++++------
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1 file changed, 8 insertions(+), 6 deletions(-)
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diff --git a/drivers/pinctrl/pinctrl-msm.c b/drivers/pinctrl/pinctrl-msm.c
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index 4474e00..87f6c3c 100644
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--- a/drivers/pinctrl/pinctrl-msm.c
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+++ b/drivers/pinctrl/pinctrl-msm.c
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@@ -258,8 +258,10 @@ static int msm_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
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#define MSM_PULL_DOWN 1
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#define MSM_PULL_UP 3
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-static const unsigned msm_regval_to_drive[] = { 2, 4, 6, 8, 10, 12, 14, 16 };
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-static const unsigned msm_drive_to_regval[] = { -1, -1, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, 5, -1, 6, -1, 7 };
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+static unsigned msm_regval_to_drive(u32 val)
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+{
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+ return (val + 1) * 2;
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+}
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static int msm_config_group_get(struct pinctrl_dev *pctldev,
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unsigned int group,
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@@ -296,7 +298,7 @@ static int msm_config_group_get(struct pinctrl_dev *pctldev,
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arg = arg == MSM_PULL_UP;
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break;
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case PIN_CONFIG_DRIVE_STRENGTH:
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- arg = msm_regval_to_drive[arg];
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+ arg = msm_regval_to_drive(arg);
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break;
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default:
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dev_err(pctrl->dev, "Unsupported config parameter: %x\n",
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@@ -349,10 +351,10 @@ static int msm_config_group_set(struct pinctrl_dev *pctldev,
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break;
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case PIN_CONFIG_DRIVE_STRENGTH:
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/* Check for invalid values */
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- if (arg >= ARRAY_SIZE(msm_drive_to_regval))
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+ if (arg > 16 || arg < 2 || (arg % 2) != 0)
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arg = -1;
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else
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- arg = msm_drive_to_regval[arg];
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+ arg = (arg / 2) - 1;
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break;
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default:
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dev_err(pctrl->dev, "Unsupported config parameter: %x\n",
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@@ -531,7 +533,7 @@ static void msm_gpio_dbg_show_one(struct seq_file *s,
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pull = (ctl_reg >> g->pull_bit) & 3;
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seq_printf(s, " %-8s: %-3s %d", g->name, is_out ? "out" : "in", func);
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- seq_printf(s, " %dmA", msm_regval_to_drive[drive]);
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+ seq_printf(s, " %dmA", msm_regval_to_drive(drive));
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seq_printf(s, " %s", pulls[pull]);
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}
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--
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1.7.10.4
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