From 2e57d56747e601b3e0ff6697e524025d0504d161 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 21 Sep 2012 18:06:52 +0800 Subject: mfd: 88pm860x: Device tree support Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- drivers/input/touchscreen/88pm860x-ts.c | 46 ++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 15 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c index 05f30b73c3c3..4f81e6eb74b6 100644 --- a/drivers/input/touchscreen/88pm860x-ts.c +++ b/drivers/input/touchscreen/88pm860x-ts.c @@ -10,6 +10,7 @@ */ #include #include +#include #include #include #include @@ -113,14 +114,31 @@ static void pm860x_touch_close(struct input_dev *dev) pm860x_set_bits(touch->i2c, MEAS_EN3, data, 0); } +#ifdef CONFIG_OF +static int __devinit pm860x_touch_dt_init(struct platform_device *pdev, + int *res_x) +{ + struct device_node *np = pdev->dev.parent->of_node; + if (!np) + return -ENODEV; + np = of_find_node_by_name(np, "touch"); + if (!np) { + dev_err(&pdev->dev, "Can't find touch node\n"); + return -EINVAL; + } + of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x); + return 0; +} +#else +#define pm860x_touch_dt_init(x, y) (-1) +#endif + static int __devinit pm860x_touch_probe(struct platform_device *pdev) { struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); - struct pm860x_platform_data *pm860x_pdata = \ - pdev->dev.parent->platform_data; - struct pm860x_touch_pdata *pdata = NULL; + struct pm860x_touch_pdata *pdata = pdev->dev.platform_data; struct pm860x_touch *touch; - int irq, ret; + int irq, ret, res_x = 0; irq = platform_get_irq(pdev, 0); if (irq < 0) { @@ -128,15 +146,13 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev) return -EINVAL; } - if (!pm860x_pdata) { - dev_err(&pdev->dev, "platform data is missing\n"); - return -EINVAL; - } - - pdata = pm860x_pdata->touch; - if (!pdata) { - dev_err(&pdev->dev, "touchscreen data is missing\n"); - return -EINVAL; + if (pm860x_touch_dt_init(pdev, &res_x)) { + if (pdata) + res_x = pdata->res_x; + else { + dev_err(&pdev->dev, "failed to get platform data\n"); + return -EINVAL; + } } touch = kzalloc(sizeof(struct pm860x_touch), GFP_KERNEL); @@ -159,8 +175,8 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev) touch->idev->close = pm860x_touch_close; touch->chip = chip; touch->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; - touch->irq = irq + chip->irq_base; - touch->res_x = pdata->res_x; + touch->irq = irq; + touch->res_x = res_x; input_set_drvdata(touch->idev, touch); ret = request_threaded_irq(touch->irq, NULL, pm860x_touch_handler, -- cgit v1.2.3 From fe1d38e80d1497a2b64685dd2e7a6018dc79b408 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 21 Sep 2012 18:06:53 +0800 Subject: mfd: 88pm860x: Move gpadc init into touch The initilization of GPADC is moved from core driver to touch driver with DT support. Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- drivers/input/touchscreen/88pm860x-ts.c | 91 ++++++++++++++++++++++++++++++--- 1 file changed, 85 insertions(+), 6 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c index 4f81e6eb74b6..326218dbd6e6 100644 --- a/drivers/input/touchscreen/88pm860x-ts.c +++ b/drivers/input/touchscreen/88pm860x-ts.c @@ -116,9 +116,13 @@ static void pm860x_touch_close(struct input_dev *dev) #ifdef CONFIG_OF static int __devinit pm860x_touch_dt_init(struct platform_device *pdev, + struct pm860x_chip *chip, int *res_x) { struct device_node *np = pdev->dev.parent->of_node; + struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ + : chip->companion; + int data, n, ret; if (!np) return -ENODEV; np = of_find_node_by_name(np, "touch"); @@ -126,11 +130,43 @@ static int __devinit pm860x_touch_dt_init(struct platform_device *pdev, dev_err(&pdev->dev, "Can't find touch node\n"); return -EINVAL; } + /* set GPADC MISC1 register */ + data = 0; + if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-prebias", &n)) + data |= (n << 1) & PM8607_GPADC_PREBIAS_MASK; + if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-slot-cycle", &n)) + data |= (n << 3) & PM8607_GPADC_SLOT_CYCLE_MASK; + if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-off-scale", &n)) + data |= (n << 5) & PM8607_GPADC_OFF_SCALE_MASK; + if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-sw-cal", &n)) + data |= (n << 7) & PM8607_GPADC_SW_CAL_MASK; + if (data) { + ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data); + if (ret < 0) + return -EINVAL; + } + /* set tsi prebias time */ + if (!of_property_read_u32(np, "marvell,88pm860x-tsi-prebias", &data)) { + ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data); + if (ret < 0) + return -EINVAL; + } + /* set prebias & prechg time of pen detect */ + data = 0; + if (!of_property_read_u32(np, "marvell,88pm860x-pen-prebias", &n)) + data |= n & PM8607_PD_PREBIAS_MASK; + if (!of_property_read_u32(np, "marvell,88pm860x-pen-prechg", &n)) + data |= n & PM8607_PD_PRECHG_MASK; + if (data) { + ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data); + if (ret < 0) + return -EINVAL; + } of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x); return 0; } #else -#define pm860x_touch_dt_init(x, y) (-1) +#define pm860x_touch_dt_init(x, y, z) (-1) #endif static int __devinit pm860x_touch_probe(struct platform_device *pdev) @@ -138,7 +174,9 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev) struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); struct pm860x_touch_pdata *pdata = pdev->dev.platform_data; struct pm860x_touch *touch; - int irq, ret, res_x = 0; + struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ + : chip->companion; + int irq, ret, res_x = 0, data = 0; irq = platform_get_irq(pdev, 0); if (irq < 0) { @@ -146,14 +184,55 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev) return -EINVAL; } - if (pm860x_touch_dt_init(pdev, &res_x)) { - if (pdata) + if (pm860x_touch_dt_init(pdev, chip, &res_x)) { + if (pdata) { + /* set GPADC MISC1 register */ + data = 0; + data |= (pdata->gpadc_prebias << 1) + & PM8607_GPADC_PREBIAS_MASK; + data |= (pdata->slot_cycle << 3) + & PM8607_GPADC_SLOT_CYCLE_MASK; + data |= (pdata->off_scale << 5) + & PM8607_GPADC_OFF_SCALE_MASK; + data |= (pdata->sw_cal << 7) + & PM8607_GPADC_SW_CAL_MASK; + if (data) { + ret = pm860x_reg_write(i2c, + PM8607_GPADC_MISC1, data); + if (ret < 0) + return -EINVAL; + } + /* set tsi prebias time */ + if (pdata->tsi_prebias) { + data = pdata->tsi_prebias; + ret = pm860x_reg_write(i2c, + PM8607_TSI_PREBIAS, data); + if (ret < 0) + return -EINVAL; + } + /* set prebias & prechg time of pen detect */ + data = 0; + data |= pdata->pen_prebias + & PM8607_PD_PREBIAS_MASK; + data |= (pdata->pen_prechg << 5) + & PM8607_PD_PRECHG_MASK; + if (data) { + ret = pm860x_reg_write(i2c, + PM8607_PD_PREBIAS, data); + if (ret < 0) + return -EINVAL; + } res_x = pdata->res_x; - else { + } else { dev_err(&pdev->dev, "failed to get platform data\n"); return -EINVAL; } } + /* enable GPADC */ + ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1, PM8607_GPADC_EN, + PM8607_GPADC_EN); + if (ret) + return ret; touch = kzalloc(sizeof(struct pm860x_touch), GFP_KERNEL); if (touch == NULL) @@ -174,7 +253,7 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev) touch->idev->open = pm860x_touch_open; touch->idev->close = pm860x_touch_close; touch->chip = chip; - touch->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; + touch->i2c = i2c; touch->irq = irq; touch->res_x = res_x; input_set_drvdata(touch->idev, touch); -- cgit v1.2.3