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(fttx-pool-217.61.153.101.bambit.de [217.61.153.101]) by mxbox3.masterlogin.de (Postfix) with ESMTPSA id 117C6360398; Sun, 6 Oct 2024 10:08:50 +0000 (UTC) From: Frank Wunderlich To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang Cc: Frank Wunderlich , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, daniel@makrotopia.org, john@phrozen.org, ansuelsmth@gmail.com, eladwf@gmail.com Subject: [PATCH v2 1/4] pinctrl: mediatek: add support for MTK_PULL_PD_TYPE Date: Sun, 6 Oct 2024 12:08:37 +0200 Message-ID: <20241006100843.13280-2-linux@fw-web.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241006100843.13280-1-linux@fw-web.de> References: <20241006100843.13280-1-linux@fw-web.de> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mail-ID: 0aa48519-a5d9-4649-893a-a5bcd1d57872 From: Daniel Golle The MediaTek MT7988 SoC got some pins which only got configurable pull-down but unlike previous designs there is no pull-up option. Add new type MTK_PULL_PD_TYPE to support configuring such pins. Signed-off-by: Daniel Golle Signed-off-by: Frank Wunderlich --- .../pinctrl/mediatek/pinctrl-mtk-common-v2.c | 59 +++++++++++++++++++ .../pinctrl/mediatek/pinctrl-mtk-common-v2.h | 1 + 2 files changed, 60 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index 54301fbba524..eff2aecd31dd 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -601,6 +601,30 @@ static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, return err; } +static int mtk_pinconf_bias_set_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, pd; + + if (arg == MTK_DISABLE) + pd = 0; + else if ((arg == MTK_ENABLE) && pullup) + pd = 0; + else if ((arg == MTK_ENABLE) && !pullup) + pd = 1; + else { + err = -EINVAL; + goto out; + } + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); + +out: + return err; + +} + static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 pullup, u32 arg) @@ -758,6 +782,12 @@ int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_set_pd(hw, desc, pullup, arg); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg); if (!err) @@ -878,6 +908,29 @@ static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw, return err; } +static int mtk_pinconf_bias_get_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err, pd; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd); + if (err) + goto out; + + if (pd == 0) { + *pullup = 0; + *enable = MTK_DISABLE; + } else if (pd == 1) { + *pullup = 0; + *enable = MTK_ENABLE; + } else + err = -EINVAL; + +out: + return err; +} + static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 *pullup, u32 *enable) @@ -947,6 +1000,12 @@ int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_get_pd(hw, desc, pullup, enable); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable); if (!err) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 23688ca6d04e..9c271dc2b521 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -24,6 +24,7 @@ * turned on/off itself. But it can't be selected pull up/down */ #define MTK_PULL_RSEL_TYPE BIT(3) +#define MTK_PULL_PD_TYPE BIT(4) /* MTK_PULL_PU_PD_RSEL_TYPE is a type which is controlled by * MTK_PULL_PU_PD_TYPE and MTK_PULL_RSEL_TYPE. */