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[2001:14ba:16e2:8300::2]) by smtp.gmail.com with ESMTPSA id q3sm236113ljp.67.2021.05.20.04.30.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 May 2021 04:30:05 -0700 (PDT) Date: Thu, 20 May 2021 14:29:57 +0300 From: Matti Vaittinen To: Matti Vaittinen , Matti Vaittinen Cc: Linus Walleij , Bartosz Golaszewski , Matti Vaittinen , Michael Walle , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-power@fi.rohmeurope.com Subject: [PATCH 2/2] gpio: bd71815: Use gpio-regmap Message-ID: <7f19bf2bb61ad64a9df94ab16bc1cca08e8efe43.1621509932.git.matti.vaittinen@fi.rohmeurope.com> References: <09091e75157ea28dcad1605008532016304356a4.1621509932.git.matti.vaittinen@fi.rohmeurope.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="u3/rZRmxL6MmkK24" Content-Disposition: inline In-Reply-To: <09091e75157ea28dcad1605008532016304356a4.1621509932.git.matti.vaittinen@fi.rohmeurope.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --u3/rZRmxL6MmkK24 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Utilize the gpio-regmap helper and drop the custom functions Signed-off-by: Matti Vaittinen --- drivers/gpio/Kconfig | 1 + drivers/gpio/gpio-bd71815.c | 106 ++++++++++-------------------------- 2 files changed, 29 insertions(+), 78 deletions(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 1dd0ec6727fd..97e1348cd410 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1120,6 +1120,7 @@ config GPIO_BD70528 config GPIO_BD71815 tristate "ROHM BD71815 PMIC GPIO support" depends on MFD_ROHM_BD71828 + select GPIO_REGMAP help Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs available on the ROHM PMIC. diff --git a/drivers/gpio/gpio-bd71815.c b/drivers/gpio/gpio-bd71815.c index 08ff2857256f..a241c01e08d1 100644 --- a/drivers/gpio/gpio-bd71815.c +++ b/drivers/gpio/gpio-bd71815.c @@ -9,6 +9,7 @@ */ =20 #include +#include #include #include #include @@ -18,81 +19,33 @@ #include =20 struct bd71815_gpio { - /* chip.parent points the MFD which provides DT node and regmap */ - struct gpio_chip chip; - /* dev points to the platform device for devm and prints */ struct device *dev; - struct regmap *regmap; }; =20 -static int bd71815gpo_get(struct gpio_chip *chip, unsigned int offset) -{ - struct bd71815_gpio *bd71815 =3D gpiochip_get_data(chip); - int ret, val; - - ret =3D regmap_read(bd71815->regmap, BD71815_REG_GPO, &val); - if (ret) - return ret; - - return (val >> offset) & 1; -} - -static void bd71815gpo_set(struct gpio_chip *chip, unsigned int offset, - int value) -{ - struct bd71815_gpio *bd71815 =3D gpiochip_get_data(chip); - int ret, bit; - - bit =3D BIT(offset); - - if (value) - ret =3D regmap_set_bits(bd71815->regmap, BD71815_REG_GPO, bit); - else - ret =3D regmap_clear_bits(bd71815->regmap, BD71815_REG_GPO, bit); - - if (ret) - dev_warn(bd71815->dev, "failed to toggle GPO\n"); -} - -static int bd71815_gpio_set_config(struct gpio_chip *chip, unsigned int of= fset, +static int bd71815_gpio_set_config(struct regmap *regmap, void *drvdata, + unsigned int offset, unsigned long config) { - struct bd71815_gpio *bdgpio =3D gpiochip_get_data(chip); + struct bd71815_gpio *bdgpio =3D (struct bd71815_gpio *)drvdata; =20 switch (pinconf_to_config_param(config)) { case PIN_CONFIG_DRIVE_OPEN_DRAIN: - return regmap_update_bits(bdgpio->regmap, + return regmap_update_bits(regmap, BD71815_REG_GPO, BD71815_GPIO_DRIVE_MASK << offset, BD71815_GPIO_OPEN_DRAIN << offset); case PIN_CONFIG_DRIVE_PUSH_PULL: - return regmap_update_bits(bdgpio->regmap, + return regmap_update_bits(regmap, BD71815_REG_GPO, BD71815_GPIO_DRIVE_MASK << offset, BD71815_GPIO_CMOS << offset); default: + dev_err(bdgpio->dev, "Unsupported config (0x%lx)\n", config); break; } return -ENOTSUPP; } =20 -/* BD71815 GPIO is actually GPO */ -static int bd71815gpo_direction_get(struct gpio_chip *gc, unsigned int off= set) -{ - return GPIO_LINE_DIRECTION_OUT; -} - -/* Template for GPIO chip */ -static const struct gpio_chip bd71815gpo_chip =3D { - .label =3D "bd71815", - .owner =3D THIS_MODULE, - .get =3D bd71815gpo_get, - .get_direction =3D bd71815gpo_direction_get, - .set =3D bd71815gpo_set, - .set_config =3D bd71815_gpio_set_config, - .can_sleep =3D true, -}; - #define BD71815_TWO_GPIOS GENMASK(1, 0) #define BD71815_ONE_GPIO BIT(0) =20 @@ -111,14 +64,16 @@ static const struct gpio_chip bd71815gpo_chip =3D { * but allows using it by providing the DT property * "rohm,enable-hidden-gpo". */ -static int bd71815_init_valid_mask(struct gpio_chip *gc, +static int bd71815_init_valid_mask(struct regmap *regmap, void *drvdata, unsigned long *valid_mask, unsigned int ngpios) { + struct bd71815_gpio *bdgpio =3D (struct bd71815_gpio *)drvdata; + if (ngpios !=3D 2) return 0; =20 - if (gc->parent && device_property_present(gc->parent, + if (bdgpio->dev && device_property_present(bdgpio->dev->parent, "rohm,enable-hidden-gpo")) *valid_mask =3D BD71815_TWO_GPIOS; else @@ -127,9 +82,19 @@ static int bd71815_init_valid_mask(struct gpio_chip *gc, return 0; } =20 +/* Template for regmap gpio config */ +static const struct gpio_regmap_config gpio_cfg_template =3D { + .label =3D "bd71815", + .reg_set_base =3D BD71815_REG_GPO, + .ngpio =3D 2, + .set_config =3D bd71815_gpio_set_config, + .init_valid_mask =3D bd71815_init_valid_mask, +}; + static int gpo_bd71815_probe(struct platform_device *pdev) { struct bd71815_gpio *g; + struct gpio_regmap_config cfg; struct device *parent, *dev; =20 /* @@ -144,30 +109,15 @@ static int gpo_bd71815_probe(struct platform_device *= pdev) if (!g) return -ENOMEM; =20 - g->chip =3D bd71815gpo_chip; - - /* - * FIXME: As writing of this the sysfs interface for GPIO control does - * not respect the valid_mask. Do not trust it but rather set the ngpios - * to 1 if "rohm,enable-hidden-gpo" is not given. - * - * This check can be removed later if the sysfs export is fixed and - * if the fix is backported. - * - * For now it is safest to just set the ngpios though. - */ - if (device_property_present(parent, "rohm,enable-hidden-gpo")) - g->chip.ngpio =3D 2; - else - g->chip.ngpio =3D 1; - - g->chip.init_valid_mask =3D bd71815_init_valid_mask; - g->chip.base =3D -1; - g->chip.parent =3D parent; - g->regmap =3D dev_get_regmap(parent, NULL); g->dev =3D dev; =20 - return devm_gpiochip_add_data(dev, &g->chip, g); + cfg =3D gpio_cfg_template; + cfg.parent =3D parent; + cfg.regmap =3D dev_get_regmap(parent, NULL); + cfg.fwnode =3D dev_fwnode(dev); + cfg.drvdata =3D g; + + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(dev, &cfg)); } =20 static struct platform_driver gpo_bd71815_driver =3D { --=20 2.25.4 --=20 Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =3D]=20 --u3/rZRmxL6MmkK24 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEIx+f8wZb28fLKEhTeFA3/03aocUFAmCmSDUACgkQeFA3/03a ocVu9Af/QXYEHOU3ReHOMx+Lp4csm93q887u9NFlC5FOgvNZvnjfiWm0UzcXK39y h84RGdeO2n69cuYfoUKImW5ws6uz/XgPZc/rGuJHYvVicEGi1rOLWlm6VPIsIOIa a8PG3QCdAo6FH/l1OXVvKACHsyzIEZhQsRGGwqZapesIjaoBXLWI5KcJ7c7ywIGD CQ2IA7IBZn6Y7w5gFpt8155uIhGeatosD9mXiL6T35lsUqnjklaaZcDvG9GPNCbx 5agm1E7Nm+oKawo3XkpTYVXL/9DHjbIRvjsDY6mKslweQXzpVNRKXKmibNYNdTNk 46OFQRfWrWKKVT8hq5wXCOEtskxyRQ== =iz9Q -----END PGP SIGNATURE----- --u3/rZRmxL6MmkK24--