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Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.1 Subject: Re: [PATCH v2 02/11] pinctrl: mediatek: paris: Fix PIN_CONFIG_BIAS_* readback Content-Language: en-US To: Chen-Yu Tsai , Sean Wang , Linus Walleij , Matthias Brugger Cc: linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20220308100956.2750295-1-wenst@chromium.org> <20220308100956.2750295-3-wenst@chromium.org> From: AngeloGioacchino Del Regno In-Reply-To: <20220308100956.2750295-3-wenst@chromium.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220308_072721_533198_8A61C6F5 X-CRM114-Status: GOOD ( 19.13 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Il 08/03/22 11:09, Chen-Yu Tsai ha scritto: > When reading back pin bias settings, if the pin is not in the > corresponding bias state, the function should return -EINVAL. > > Fix this in the mediatek-paris pinctrl library so that the read back > state is not littered with bogus a "input bias disabled" combined with > "pull up" or "pull down" states. > > Fixes: 805250982bb5 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings") > Signed-off-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno > --- > drivers/pinctrl/mediatek/pinctrl-paris.c | 16 ++++++---------- > 1 file changed, 6 insertions(+), 10 deletions(-) > > diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c > index f9f9110f2107..7037560ecda9 100644 > --- a/drivers/pinctrl/mediatek/pinctrl-paris.c > +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c > @@ -96,20 +96,16 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, > err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret); > if (err) > goto out; > + if (ret == MTK_PUPD_SET_R1R0_00) > + ret = MTK_DISABLE; > if (param == PIN_CONFIG_BIAS_DISABLE) { > - if (ret == MTK_PUPD_SET_R1R0_00) > - ret = MTK_DISABLE; > + if (ret != MTK_DISABLE) > + err = -EINVAL; > } else if (param == PIN_CONFIG_BIAS_PULL_UP) { > - /* When desire to get pull-up value, return > - * error if current setting is pull-down > - */ > - if (!pullup) > + if (!pullup || ret == MTK_DISABLE) > err = -EINVAL; > } else if (param == PIN_CONFIG_BIAS_PULL_DOWN) { > - /* When desire to get pull-down value, return > - * error if current setting is pull-up > - */ > - if (pullup) > + if (pullup || ret == MTK_DISABLE) > err = -EINVAL; > } > } else { _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek