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Message-ID: <8735h4kydh.fsf@baylibre.com>
Date: Fri, 20 May 2022 17:38:34 +0200
From: Mattijs Korpershoek <mkorpershoek@...libre.com>
To: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
dmitry.torokhov@...il.com
Cc: matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
linux-input@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] Input: mtk-pmic-keys - Move long press debounce
mask to mtk_pmic_regs
On ven., mai 20, 2022 at 14:51, AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> wrote:
> As the second and last step of preparation to add support for more
> PMICs in this driver, move the long press debounce mask to struct
> mtk_pmic_regs and use that in mtk_pmic_keys_lp_reset_setup() instead
> of directly using the definition.
>
> While at it, remove the MTK_PMIC_RST_DU_{MASK,SHIFT} definitions, as
> these can be expressed with the GENMASK macro and a new name was
> chosen for that, as to uniform the definition names with the others
> found in this driver.
>
> Lastly, it was necessary to change the function signature of
> mtk_pmic_keys_lp_reset_setup() to now pass a pointer to the main
> mtk_pmic_regs structure, since that's what contains the reset
> debounce mask now and, for readability purposes, for this function,
> all of the references to keys->regmap were changed to use a local
> 'rmap' pointer, or the calls to regmap_{set,clear}_bits would be
> ~94 columns long.
>
> This commit brings no functional changes.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@...libre.com>
> ---
> drivers/input/keyboard/mtk-pmic-keys.c | 33 +++++++++++++++-----------
> 1 file changed, 19 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/input/keyboard/mtk-pmic-keys.c b/drivers/input/keyboard/mtk-pmic-keys.c
> index d8285612265f..acd5aefac5f9 100644
> --- a/drivers/input/keyboard/mtk-pmic-keys.c
> +++ b/drivers/input/keyboard/mtk-pmic-keys.c
> @@ -18,11 +18,9 @@
> #include <linux/platform_device.h>
> #include <linux/regmap.h>
>
> -#define MTK_PMIC_RST_DU_MASK 0x3
> -#define MTK_PMIC_RST_DU_SHIFT 8
> -
> #define MTK_PMIC_MT6397_HOMEKEY_RST_EN BIT(5)
> #define MTK_PMIC_MT6397_PWRKEY_RST_EN BIT(6)
> +#define MTK_PMIC_MT6397_RST_DU_MASK GENMASK(9, 8)
>
> #define MTK_PMIC_PWRKEY_INDEX 0
> #define MTK_PMIC_HOMEKEY_INDEX 1
> @@ -58,10 +56,12 @@ struct mtk_pmic_keys_regs {
> * struct mtk_pmic_regs - PMIC Keys registers
> * @keys_regs: Specific key registers
> * @pmic_rst_reg: PMIC Keys reset register
> + * @rst_lprst_mask: Long-press reset timeout bitmask
> */
> struct mtk_pmic_regs {
> const struct mtk_pmic_keys_regs keys_regs[MTK_PMIC_MAX_KEY_COUNT];
> u32 pmic_rst_reg;
> + u32 rst_lprst_mask;
> };
>
> static const struct mtk_pmic_regs mt6397_regs = {
> @@ -72,6 +72,7 @@ static const struct mtk_pmic_regs mt6397_regs = {
> MTK_PMIC_KEYS_REGS(MT6397_OCSTATUS2,
> 0x10, MT6397_INT_RSV, 0x8, MTK_PMIC_MT6397_HOMEKEY_RST_EN),
> .pmic_rst_reg = MT6397_TOP_RST_MISC,
> + .rst_lprst_mask = MTK_PMIC_MT6397_RST_DU_MASK,
> };
>
> static const struct mtk_pmic_regs mt6323_regs = {
> @@ -82,6 +83,7 @@ static const struct mtk_pmic_regs mt6323_regs = {
> MTK_PMIC_KEYS_REGS(MT6323_CHRSTATUS,
> 0x4, MT6323_INT_MISC_CON, 0x8, MTK_PMIC_MT6397_HOMEKEY_RST_EN),
> .pmic_rst_reg = MT6323_TOP_RST_MISC,
> + .rst_lprst_mask = MTK_PMIC_MT6397_RST_DU_MASK,
> };
>
> static const struct mtk_pmic_regs mt6358_regs = {
> @@ -94,6 +96,7 @@ static const struct mtk_pmic_regs mt6358_regs = {
> 0x8, MT6358_PSC_TOP_INT_CON0, 0xa,
> MTK_PMIC_MT6397_HOMEKEY_RST_EN),
> .pmic_rst_reg = MT6358_TOP_RST_MISC,
> + .rst_lprst_mask = MTK_PMIC_MT6397_RST_DU_MASK,
> };
>
> /**
> @@ -135,24 +138,26 @@ enum mtk_pmic_keys_lp_mode {
> };
>
> static void mtk_pmic_keys_lp_reset_setup(struct mtk_pmic_keys *keys,
> - u32 pmic_rst_reg)
> + const struct mtk_pmic_regs *regs)
> {
> int ret;
> + struct regmap *rmap;
> u32 long_press_mode, long_press_debounce;
> const struct mtk_pmic_keys_regs *kregs_pwr;
> const struct mtk_pmic_keys_regs *kregs_home;
>
> kregs_pwr = keys->keys[MTK_PMIC_PWRKEY_INDEX].regs;
> kregs_home = keys->keys[MTK_PMIC_HOMEKEY_INDEX].regs;
> + rmap = keys->regmap;
>
> ret = of_property_read_u32(keys->dev->of_node,
> "power-off-time-sec", &long_press_debounce);
> if (ret)
> long_press_debounce = 0;
>
> - regmap_update_bits(keys->regmap, pmic_rst_reg,
> - MTK_PMIC_RST_DU_MASK << MTK_PMIC_RST_DU_SHIFT,
> - long_press_debounce << MTK_PMIC_RST_DU_SHIFT);
> + regmap_update_bits(rmap, regs->pmic_rst_reg,
> + regs->rst_lprst_mask,
> + long_press_debounce << ffs(regs->rst_lprst_mask));
>
> ret = of_property_read_u32(keys->dev->of_node,
> "mediatek,long-press-mode", &long_press_mode);
> @@ -161,16 +166,16 @@ static void mtk_pmic_keys_lp_reset_setup(struct mtk_pmic_keys *keys,
>
> switch (long_press_mode) {
> case LP_ONEKEY:
> - regmap_set_bits(keys->regmap, pmic_rst_reg, kregs_pwr->rst_en_mask);
> - regmap_clear_bits(keys->regmap, pmic_rst_reg, kregs_home->rst_en_mask);
> + regmap_set_bits(rmap, regs->pmic_rst_reg, kregs_pwr->rst_en_mask);
> + regmap_clear_bits(rmap, regs->pmic_rst_reg, kregs_home->rst_en_mask);
> break;
> case LP_TWOKEY:
> - regmap_set_bits(keys->regmap, pmic_rst_reg, kregs_pwr->rst_en_mask);
> - regmap_set_bits(keys->regmap, pmic_rst_reg, kregs_home->rst_en_mask);
> + regmap_set_bits(rmap, regs->pmic_rst_reg, kregs_pwr->rst_en_mask);
> + regmap_set_bits(rmap, regs->pmic_rst_reg, kregs_home->rst_en_mask);
> break;
> case LP_DISABLE:
> - regmap_clear_bits(keys->regmap, pmic_rst_reg, kregs_pwr->rst_en_mask);
> - regmap_clear_bits(keys->regmap, pmic_rst_reg, kregs_home->rst_en_mask);
> + regmap_clear_bits(rmap, regs->pmic_rst_reg, kregs_pwr->rst_en_mask);
> + regmap_clear_bits(rmap, regs->pmic_rst_reg, kregs_home->rst_en_mask);
> break;
> default:
> break;
> @@ -378,7 +383,7 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev)
> return error;
> }
>
> - mtk_pmic_keys_lp_reset_setup(keys, mtk_pmic_regs->pmic_rst_reg);
> + mtk_pmic_keys_lp_reset_setup(keys, mtk_pmic_regs);
>
> platform_set_drvdata(pdev, keys);
>
> --
> 2.35.1
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