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Wed, 23 Apr 2025 01:55:52 -0700 (PDT) From: Bartosz Golaszewski Date: Wed, 23 Apr 2025 10:55:43 +0200 Subject: [PATCH 5/6] hid: mcp2200: use new line value setter callbacks Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250423-gpiochip-set-rv-hid-v1-5-2e6762b582f6@linaro.org> References: <20250423-gpiochip-set-rv-hid-v1-0-2e6762b582f6@linaro.org> In-Reply-To: <20250423-gpiochip-set-rv-hid-v1-0-2e6762b582f6@linaro.org> To: Jiri Kosina , Benjamin Tissoires , Linus Walleij , Bartosz Golaszewski , Rishi Gupta Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2393; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=Xe8t0cpiuXJK24uNCrjJrCuXqwBBlo0SGHtnD96+ABQ=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBoCKsS6nROAKUfKKPoUE9uts+jWoWMp4vrsAXyn W4jFsTpftGJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaAirEgAKCRARpy6gFHHX ckaeEACGpatmiJ9qt1T6hsGmMRqs2sFqWxlzRfU+OQx9iR4FdQC32TPbMOtJJRAuxCFMk0H7+0E AhxxwbdSJ0NlDOwGDXWV5Q3hESoDwQT1O2BkWq+X2PS7ZTL2DPQlvrMAswo0ELOahpCI82k29Ck KhfhUftY2CaInq2Gq+fBlQjltAFKAx5otmFMoBQTJs7bMKfJrhXUn4okq3/UuSlgxKM4GLsh8vD f+GXt37rNtuKUh/lQajSBsFAZbDMRGFM7LKZITTB0UvNsD2A5vpi79R/Qnxcoq0gEHALMFzE3nv NqSOsTDaD9aEM5V0aEvXTntCgXf8vr72Qskq9HlxFwwbzHTSMFTy1RyksLsbzEeTs4Kq5+Hrtkr sW+kSabg60nzvxTccwAg285BW60P0x7A6XTja0lWLx9nLf6vPVqlgyAy9wXwtc56qPIMTzLvPtv Eua936FnGDq6DY9/JAkTkYbNXRMZuI0p1/oMVOxdyzM2qtRxRJy7qARGA7PA9FsCbJ/fyp2wUii fwCIzA9KQ1RsdXHom4hBMTvA/CxSb5SEMss3nrfP9XvjNLpoz+j6oxYYY/bQMV7bFiNH2LOeJwW xuE63LhVXASlR8thZZyawKE+qcA29IyschYh7EW3aE2V06r1M5vqggDuMBN+XYTujbNE80JNDNR awhhR5u+RCPd83Q== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski --- drivers/hid/hid-mcp2200.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/hid/hid-mcp2200.c b/drivers/hid/hid-mcp2200.c index bf57f7f6caa0..e6ea0a2140eb 100644 --- a/drivers/hid/hid-mcp2200.c +++ b/drivers/hid/hid-mcp2200.c @@ -127,8 +127,8 @@ static int mcp_cmd_read_all(struct mcp2200 *mcp) return mcp->status; } =20 -static void mcp_set_multiple(struct gpio_chip *gc, unsigned long *mask, - unsigned long *bits) +static int mcp_set_multiple(struct gpio_chip *gc, unsigned long *mask, + unsigned long *bits) { struct mcp2200 *mcp =3D gpiochip_get_data(gc); u8 value; @@ -150,16 +150,20 @@ static void mcp_set_multiple(struct gpio_chip *gc, un= signed long *mask, =20 if (status =3D=3D sizeof(struct mcp_set_clear_outputs)) mcp->gpio_val =3D value; + else + status =3D -EIO; =20 mutex_unlock(&mcp->lock); + + return status; } =20 -static void mcp_set(struct gpio_chip *gc, unsigned int gpio_nr, int value) +static int mcp_set(struct gpio_chip *gc, unsigned int gpio_nr, int value) { unsigned long mask =3D 1 << gpio_nr; unsigned long bmap_value =3D value << gpio_nr; =20 - mcp_set_multiple(gc, &mask, &bmap_value); + return mcp_set_multiple(gc, &mask, &bmap_value); } =20 static int mcp_get_multiple(struct gpio_chip *gc, unsigned long *mask, @@ -263,9 +267,10 @@ static int mcp_direction_output(struct gpio_chip *gc, = unsigned int gpio_nr, bmap_value =3D value << gpio_nr; =20 ret =3D mcp_set_direction(gc, gpio_nr, MCP2200_DIR_OUT); - if (!ret) - mcp_set_multiple(gc, &mask, &bmap_value); - return ret; + if (ret) + return ret; + + return mcp_set_multiple(gc, &mask, &bmap_value); } =20 static const struct gpio_chip template_chip =3D { @@ -274,8 +279,8 @@ static const struct gpio_chip template_chip =3D { .get_direction =3D mcp_get_direction, .direction_input =3D mcp_direction_input, .direction_output =3D mcp_direction_output, - .set =3D mcp_set, - .set_multiple =3D mcp_set_multiple, + .set_rv =3D mcp_set, + .set_multiple_rv =3D mcp_set_multiple, .get =3D mcp_get, .get_multiple =3D mcp_get_multiple, .base =3D -1, --=20 2.45.2