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Fri, 25 Jan 2019 09:50:53 -0800 (PST) From: =?utf-8?q?Pawe=C5=82_Chmiel?= To: dmitry.torokhov@gmail.com Cc: robh+dt@kernel.org, mark.rutland@arm.com, mchehab+samsung@kernel.org, colyli@suse.de, ckeepax@opensource.wolfsonmicro.com, andrew.smirnov@gmail.com, arnd@arndb.de, xiaotong.lu@spreadtrum.com, xc-racer2@live.ca, pawel.mikolaj.chmiel@gmail.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH 3/4] input: misc: gp2a: Enable device tree Date: Fri, 25 Jan 2019 18:50:44 +0100 Message-Id: <20190125175045.22576-4-pawel.mikolaj.chmiel@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190125175045.22576-1-pawel.mikolaj.chmiel@gmail.com> References: <20190125175045.22576-1-pawel.mikolaj.chmiel@gmail.com> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jonathan Bakker Enable probing of gp2a via device tree via a simple of_match table Signed-off-by: Jonathan Bakker Signed-off-by: Paweł Chmiel --- drivers/input/misc/gp2ap002a00f.c | 46 +++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/input/misc/gp2ap002a00f.c b/drivers/input/misc/gp2ap002a00f.c index 090c8c313295..01a7d44ae921 100644 --- a/drivers/input/misc/gp2ap002a00f.c +++ b/drivers/input/misc/gp2ap002a00f.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include struct gp2a_data { struct iio_channel *channel; @@ -140,6 +142,35 @@ static int gp2a_initialize(struct gp2a_data *dt) return error; } +static struct gp2a_platform_data *gp2a_parse_dt_pdata(struct device *dev) +{ + struct gp2a_platform_data *pdata; + int ret; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + pdata->wakeup = of_property_read_bool(dev->of_node, "wakeup"); + + pdata->vout_gpio = of_get_named_gpio(dev->of_node, "vout-gpio", 0); + if (pdata->vout_gpio < 0) { + dev_err(dev, "failed to find vout-gpio"); + return ERR_PTR(-EINVAL); + } + + ret = device_property_read_u32(dev, "light-adc-max", + &pdata->light_adc_max); + if (ret) + pdata->light_adc_max = 4096; + ret = device_property_read_u32(dev, "light-adc-fuzz", + &pdata->light_adc_fuzz); + if (ret) + pdata->light_adc_fuzz = 80; + + return pdata; +} + static int gp2a_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -147,6 +178,12 @@ static int gp2a_probe(struct i2c_client *client, struct gp2a_data *dt; int error, value; + if (IS_ENABLED(CONFIG_OF) && client->dev.of_node) { + pdata = gp2a_parse_dt_pdata(&client->dev); + if (IS_ERR(pdata)) + return PTR_ERR(pdata); + } + if (!pdata) return -EINVAL; @@ -317,6 +354,14 @@ static int __maybe_unused gp2a_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(gp2a_pm, gp2a_suspend, gp2a_resume); +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id gp2a_of_match[] = { + { .compatible = "sharp,gp2ap002a00f" }, + { }, +}; +MODULE_DEVICE_TABLE(of, gp2a_of_match); +#endif + static const struct i2c_device_id gp2a_i2c_id[] = { { GP2A_I2C_NAME, 0 }, { } @@ -326,6 +371,7 @@ MODULE_DEVICE_TABLE(i2c, gp2a_i2c_id); static struct i2c_driver gp2a_i2c_driver = { .driver = { .name = GP2A_I2C_NAME, + .of_match_table = of_match_ptr(gp2a_of_match), .pm = &gp2a_pm, }, .probe = gp2a_probe,