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([188.163.112.51]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5441053eacfsm1797880e87.38.2025.02.11.23.59.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Feb 2025 23:59:17 -0800 (PST) From: Svyatoslav Ryhel To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , Lars-Peter Clausen , Pavel Machek , Daniel Thompson , Jingoo Han , Helge Deller , Svyatoslav Ryhel , Andy Shevchenko , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?q?=C3=B6nig?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-leds@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: [PATCH v1 2/2] mfd: lm3533: convert to use OF Date: Wed, 12 Feb 2025 09:58:42 +0200 Message-ID: <20250212075845.11338-3-clamor95@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250212075845.11338-1-clamor95@gmail.com> References: <20250212075845.11338-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add ability to fill pdata from device tree. Common stuff is filled from core driver and then pdata is filled per-device since all cells are optional. Signed-off-by: Svyatoslav Ryhel --- drivers/iio/light/lm3533-als.c | 58 ++++++++++++++++++++- drivers/leds/leds-lm3533.c | 69 +++++++++++++++++++++++-- drivers/mfd/lm3533-core.c | 79 ++++++++++++++++++++++++----- drivers/video/backlight/lm3533_bl.c | 72 ++++++++++++++++++++++++-- include/linux/mfd/lm3533.h | 1 + 5 files changed, 256 insertions(+), 23 deletions(-) diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c index 99f0b903018c..21fc5f215c80 100644 --- a/drivers/iio/light/lm3533-als.c +++ b/drivers/iio/light/lm3533-als.c @@ -16,7 +16,9 @@ #include #include #include +#include #include +#include #include #include @@ -826,6 +828,50 @@ static const struct iio_info lm3533_als_info = { .read_raw = &lm3533_als_read_raw, }; +static void lm3533_parse_als(struct platform_device *pdev, + struct lm3533_als_platform_data *pdata) +{ + struct device *dev = &pdev->dev; + int val, ret; + + /* 1 - 127 (ignored in PWM-mode) */ + ret = device_property_read_u32(dev, "resistor-value", &val); + if (ret) + val = 1; + pdata->r_select = val; + + pdata->pwm_mode = device_property_read_bool(dev, "pwm-mode"); +} + +static int lm3533_pass_of_node(struct platform_device *pdev, + struct lm3533_als_platform_data *pdata) +{ + struct device *parent_dev = pdev->dev.parent; + struct device *dev = &pdev->dev; + struct fwnode_handle *node; + const char *label; + int val, ret; + + device_for_each_child_node(parent_dev, node) { + fwnode_property_read_string(node, "compatible", &label); + + if (!strcmp(label, pdev->name)) { + ret = fwnode_property_read_u32(node, "reg", &val); + if (ret) { + dev_err(dev, "reg property is missing: ret %d\n", ret); + return ret; + } + + if (val == pdev->id) { + dev->fwnode = node; + dev->of_node = to_of_node(node); + } + } + } + + return 0; +} + static int lm3533_als_probe(struct platform_device *pdev) { const struct lm3533_als_platform_data *pdata; @@ -840,8 +886,16 @@ static int lm3533_als_probe(struct platform_device *pdev) pdata = dev_get_platdata(&pdev->dev); if (!pdata) { - dev_err(&pdev->dev, "no platform data\n"); - return -EINVAL; + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + ret = lm3533_pass_of_node(pdev, pdata); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to get als device node\n"); + + lm3533_parse_als(pdev, pdata); } indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*als)); diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c index 45795f2a1042..587bc27b17c3 100644 --- a/drivers/leds/leds-lm3533.c +++ b/drivers/leds/leds-lm3533.c @@ -11,7 +11,9 @@ #include #include #include +#include #include +#include #include #include @@ -644,6 +646,59 @@ static int lm3533_led_setup(struct lm3533_led *led, return lm3533_ctrlbank_set_pwm(&led->cb, pdata->pwm); } +static void lm3533_parse_led(struct platform_device *pdev, + struct lm3533_led_platform_data *pdata) +{ + struct device *dev = &pdev->dev; + int val, ret; + + ret = device_property_read_string(dev, "default-trigger", + &pdata->default_trigger); + if (ret) + pdata->default_trigger = "none"; + + /* 5000 - 29800 uA (800 uA step) */ + ret = device_property_read_u32(dev, "max-current-microamp", &val); + if (ret) + val = 5000; + pdata->max_current = val; + + /* 0 - 0x3f */ + ret = device_property_read_u32(dev, "pwm", &val); + if (ret) + val = 0; + pdata->pwm = val; +} + +static int lm3533_pass_of_node(struct platform_device *pdev, + struct lm3533_led_platform_data *pdata) +{ + struct device *parent_dev = pdev->dev.parent; + struct device *dev = &pdev->dev; + struct fwnode_handle *node; + const char *label; + int val, ret; + + device_for_each_child_node(parent_dev, node) { + fwnode_property_read_string(node, "compatible", &label); + + if (!strcmp(label, pdev->name)) { + ret = fwnode_property_read_u32(node, "reg", &val); + if (ret) { + dev_info(dev, "reg property is missing: ret %d\n", ret); + return ret; + } + + if (val == pdev->id) { + dev->fwnode = node; + dev->of_node = to_of_node(node); + } + } + } + + return 0; +} + static int lm3533_led_probe(struct platform_device *pdev) { struct lm3533 *lm3533; @@ -659,8 +714,16 @@ static int lm3533_led_probe(struct platform_device *pdev) pdata = dev_get_platdata(&pdev->dev); if (!pdata) { - dev_err(&pdev->dev, "no platform data\n"); - return -EINVAL; + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + ret = lm3533_pass_of_node(pdev, pdata); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to get led device node\n"); + + lm3533_parse_led(pdev, pdata); } if (pdev->id < 0 || pdev->id >= LM3533_LVCTRLBANK_COUNT) { @@ -673,7 +736,7 @@ static int lm3533_led_probe(struct platform_device *pdev) return -ENOMEM; led->lm3533 = lm3533; - led->cdev.name = pdata->name; + led->cdev.name = dev_name(&pdev->dev); led->cdev.default_trigger = pdata->default_trigger; led->cdev.brightness_set_blocking = lm3533_led_set; led->cdev.brightness_get = lm3533_led_get; diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c index 0a2409d00b2e..cab60c25e3c7 100644 --- a/drivers/mfd/lm3533-core.c +++ b/drivers/mfd/lm3533-core.c @@ -381,11 +381,16 @@ static int lm3533_device_als_init(struct lm3533 *lm3533) struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); int ret; - if (!pdata->als) + if (!pdata->num_als) return 0; - lm3533_als_devs[0].platform_data = pdata->als; - lm3533_als_devs[0].pdata_size = sizeof(*pdata->als); + if (pdata->num_als > ARRAY_SIZE(lm3533_als_devs)) + pdata->num_als = ARRAY_SIZE(lm3533_als_devs); + + if (pdata->als) { + lm3533_als_devs[0].platform_data = pdata->als; + lm3533_als_devs[0].pdata_size = sizeof(*pdata->als); + } ret = mfd_add_devices(lm3533->dev, 0, lm3533_als_devs, 1, NULL, 0, NULL); @@ -405,15 +410,17 @@ static int lm3533_device_bl_init(struct lm3533 *lm3533) int i; int ret; - if (!pdata->backlights || pdata->num_backlights == 0) + if (!pdata->num_backlights) return 0; if (pdata->num_backlights > ARRAY_SIZE(lm3533_bl_devs)) pdata->num_backlights = ARRAY_SIZE(lm3533_bl_devs); - for (i = 0; i < pdata->num_backlights; ++i) { - lm3533_bl_devs[i].platform_data = &pdata->backlights[i]; - lm3533_bl_devs[i].pdata_size = sizeof(pdata->backlights[i]); + if (pdata->backlights) { + for (i = 0; i < pdata->num_backlights; ++i) { + lm3533_bl_devs[i].platform_data = &pdata->backlights[i]; + lm3533_bl_devs[i].pdata_size = sizeof(pdata->backlights[i]); + } } ret = mfd_add_devices(lm3533->dev, 0, lm3533_bl_devs, @@ -434,15 +441,17 @@ static int lm3533_device_led_init(struct lm3533 *lm3533) int i; int ret; - if (!pdata->leds || pdata->num_leds == 0) + if (!pdata->num_leds) return 0; if (pdata->num_leds > ARRAY_SIZE(lm3533_led_devs)) pdata->num_leds = ARRAY_SIZE(lm3533_led_devs); - for (i = 0; i < pdata->num_leds; ++i) { - lm3533_led_devs[i].platform_data = &pdata->leds[i]; - lm3533_led_devs[i].pdata_size = sizeof(pdata->leds[i]); + if (pdata->leds) { + for (i = 0; i < pdata->num_leds; ++i) { + lm3533_led_devs[i].platform_data = &pdata->leds[i]; + lm3533_led_devs[i].pdata_size = sizeof(pdata->leds[i]); + } } ret = mfd_add_devices(lm3533->dev, 0, lm3533_led_devs, @@ -469,6 +478,26 @@ static int lm3533_device_setup(struct lm3533 *lm3533, return lm3533_set_boost_ovp(lm3533, pdata->boost_ovp); } +static void lm3533_parse_nodes(struct lm3533 *lm3533, + struct lm3533_platform_data *pdata) +{ + struct fwnode_handle *node; + const char *label; + + device_for_each_child_node(lm3533->dev, node) { + fwnode_property_read_string(node, "compatible", &label); + + if (!strcmp(label, lm3533_bl_devs[pdata->num_backlights].name)) + pdata->num_backlights++; + + if (!strcmp(label, lm3533_led_devs[pdata->num_leds].name)) + pdata->num_leds++; + + if (!strcmp(label, lm3533_als_devs[pdata->num_als].name)) + pdata->num_als++; + } +} + static int lm3533_device_init(struct lm3533 *lm3533) { struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); @@ -477,8 +506,25 @@ static int lm3533_device_init(struct lm3533 *lm3533) dev_dbg(lm3533->dev, "%s\n", __func__); if (!pdata) { - dev_err(lm3533->dev, "no platform data\n"); - return -EINVAL; + pdata = devm_kzalloc(lm3533->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + ret = device_property_read_u32(lm3533->dev, + "ti,boost-ovp", + &pdata->boost_ovp); + if (ret) + pdata->boost_ovp = LM3533_BOOST_OVP_16V; + + ret = device_property_read_u32(lm3533->dev, + "ti,boost-freq", + &pdata->boost_freq); + if (ret) + pdata->boost_freq = LM3533_BOOST_FREQ_500KHZ; + + lm3533_parse_nodes(lm3533, pdata); + + lm3533->dev->platform_data = pdata; } lm3533->hwen = devm_gpiod_get(lm3533->dev, NULL, GPIOD_OUT_LOW); @@ -603,6 +649,12 @@ static void lm3533_i2c_remove(struct i2c_client *i2c) lm3533_device_exit(lm3533); } +static const struct of_device_id lm3533_match_table[] = { + { .compatible = "ti,lm3533" }, + { }, +}; +MODULE_DEVICE_TABLE(of, lm3533_match_table); + static const struct i2c_device_id lm3533_i2c_ids[] = { { "lm3533" }, { } @@ -612,6 +664,7 @@ MODULE_DEVICE_TABLE(i2c, lm3533_i2c_ids); static struct i2c_driver lm3533_i2c_driver = { .driver = { .name = "lm3533", + .of_match_table = lm3533_match_table, }, .id_table = lm3533_i2c_ids, .probe = lm3533_i2c_probe, diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c index babfd3ceec86..bc568916f1b1 100644 --- a/drivers/video/backlight/lm3533_bl.c +++ b/drivers/video/backlight/lm3533_bl.c @@ -258,6 +258,60 @@ static int lm3533_bl_setup(struct lm3533_bl *bl, return lm3533_ctrlbank_set_pwm(&bl->cb, pdata->pwm); } +static void lm3533_parse_backlight(struct platform_device *pdev, + struct lm3533_bl_platform_data *pdata) +{ + struct device *dev = &pdev->dev; + int val, ret; + + /* 5000 - 29800 uA (800 uA step) */ + ret = device_property_read_u32(dev, "max-current-microamp", &val); + if (ret) + val = 5000; + pdata->max_current = val; + + /* 0 - 255 */ + ret = device_property_read_u32(dev, "default-brightness", &val); + if (ret) + val = LM3533_BL_MAX_BRIGHTNESS; + pdata->default_brightness = val; + + /* 0 - 0x3f */ + ret = device_property_read_u32(dev, "pwm", &val); + if (ret) + val = 0; + pdata->pwm = val; +} + +static int lm3533_pass_of_node(struct platform_device *pdev, + struct lm3533_bl_platform_data *pdata) +{ + struct device *parent_dev = pdev->dev.parent; + struct device *dev = &pdev->dev; + struct fwnode_handle *node; + const char *label; + int val, ret; + + device_for_each_child_node(parent_dev, node) { + fwnode_property_read_string(node, "compatible", &label); + + if (!strcmp(label, pdev->name)) { + ret = fwnode_property_read_u32(node, "reg", &val); + if (ret) { + dev_info(dev, "reg property is missing: ret %d\n", ret); + return ret; + } + + if (val == pdev->id) { + dev->fwnode = node; + dev->of_node = to_of_node(node); + } + } + } + + return 0; +} + static int lm3533_bl_probe(struct platform_device *pdev) { struct lm3533 *lm3533; @@ -275,8 +329,16 @@ static int lm3533_bl_probe(struct platform_device *pdev) pdata = dev_get_platdata(&pdev->dev); if (!pdata) { - dev_err(&pdev->dev, "no platform data\n"); - return -EINVAL; + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + ret = lm3533_pass_of_node(pdev, pdata); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to get backlight device node\n"); + + lm3533_parse_backlight(pdev, pdata); } if (pdev->id < 0 || pdev->id >= LM3533_HVCTRLBANK_COUNT) { @@ -299,9 +361,9 @@ static int lm3533_bl_probe(struct platform_device *pdev) props.type = BACKLIGHT_RAW; props.max_brightness = LM3533_BL_MAX_BRIGHTNESS; props.brightness = pdata->default_brightness; - bd = devm_backlight_device_register(&pdev->dev, pdata->name, - pdev->dev.parent, bl, &lm3533_bl_ops, - &props); + bd = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev), + pdev->dev.parent, bl, + &lm3533_bl_ops, &props); if (IS_ERR(bd)) { dev_err(&pdev->dev, "failed to register backlight device\n"); return PTR_ERR(bd); diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h index 69059a7a2ce5..e22fd2093a95 100644 --- a/include/linux/mfd/lm3533.h +++ b/include/linux/mfd/lm3533.h @@ -74,6 +74,7 @@ struct lm3533_platform_data { enum lm3533_boost_freq boost_freq; struct lm3533_als_platform_data *als; + int num_als; struct lm3533_bl_platform_data *backlights; int num_backlights;