diff options
Diffstat (limited to 'drivers/staging/iio/dac/ad5624r_spi.c')
| -rw-r--r-- | drivers/staging/iio/dac/ad5624r_spi.c | 95 |
1 files changed, 44 insertions, 51 deletions
diff --git a/drivers/staging/iio/dac/ad5624r_spi.c b/drivers/staging/iio/dac/ad5624r_spi.c index c679981..8e81fce 100644 --- a/drivers/staging/iio/dac/ad5624r_spi.c +++ b/drivers/staging/iio/dac/ad5624r_spi.c @@ -7,7 +7,6 @@ */ #include <linux/interrupt.h> -#include <linux/gpio.h> #include <linux/fs.h> #include <linux/device.h> #include <linux/kernel.h> @@ -15,6 +14,7 @@ #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/regulator/consumer.h> +#include <linux/module.h> #include "../iio.h" #include "../sysfs.h" @@ -49,7 +49,7 @@ static const struct ad5624r_chip_info ad5624r_chip_info_tbl[] = { }; static int ad5624r_spi_write(struct spi_device *spi, - u8 cmd, u8 addr, u16 val, u8 len) + u8 cmd, u8 addr, u16 val, u8 shift) { u32 data; u8 msg[3]; @@ -62,7 +62,7 @@ static int ad5624r_spi_write(struct spi_device *spi, * 14-, 12-bit input code followed by 0, 2, or 4 don't care bits, * for the AD5664R, AD5644R, and AD5624R, respectively. */ - data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << (16 - len)); + data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << shift); msg[0] = data >> 16; msg[1] = data >> 8; msg[2] = data; @@ -77,7 +77,7 @@ static ssize_t ad5624r_write_dac(struct device *dev, long readin; int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); ret = strict_strtol(buf, 10, &readin); @@ -94,7 +94,7 @@ static ssize_t ad5624r_read_powerdown_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); char mode[][15] = {"", "1kohm_to_gnd", "100kohm_to_gnd", "three_state"}; @@ -106,7 +106,7 @@ static ssize_t ad5624r_write_powerdown_mode(struct device *dev, const char *buf, size_t len) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); int ret; if (sysfs_streq(buf, "1kohm_to_gnd")) @@ -126,7 +126,7 @@ static ssize_t ad5624r_read_dac_powerdown(struct device *dev, char *buf) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); return sprintf(buf, "%d\n", @@ -140,7 +140,7 @@ static ssize_t ad5624r_write_dac_powerdown(struct device *dev, long readin; int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); ret = strict_strtol(buf, 10, &readin); @@ -166,28 +166,28 @@ static ssize_t ad5624r_show_scale(struct device *dev, char *buf) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5624r_state *st = iio_dev_get_devdata(indio_dev); + struct ad5624r_state *st = iio_priv(indio_dev); /* Corresponds to Vref / 2^(bits) */ unsigned int scale_uv = (st->vref_mv * 1000) >> st->chip_info->bits; return sprintf(buf, "%d.%03d\n", scale_uv / 1000, scale_uv % 1000); } -static IIO_DEVICE_ATTR(out_scale, S_IRUGO, ad5624r_show_scale, NULL, 0); +static IIO_DEVICE_ATTR(out_voltage_scale, S_IRUGO, ad5624r_show_scale, NULL, 0); static IIO_DEV_ATTR_OUT_RAW(0, ad5624r_write_dac, AD5624R_ADDR_DAC0); static IIO_DEV_ATTR_OUT_RAW(1, ad5624r_write_dac, AD5624R_ADDR_DAC1); static IIO_DEV_ATTR_OUT_RAW(2, ad5624r_write_dac, AD5624R_ADDR_DAC2); static IIO_DEV_ATTR_OUT_RAW(3, ad5624r_write_dac, AD5624R_ADDR_DAC3); -static IIO_DEVICE_ATTR(out_powerdown_mode, S_IRUGO | +static IIO_DEVICE_ATTR(out_voltage_powerdown_mode, S_IRUGO | S_IWUSR, ad5624r_read_powerdown_mode, ad5624r_write_powerdown_mode, 0); -static IIO_CONST_ATTR(out_powerdown_mode_available, +static IIO_CONST_ATTR(out_voltage_powerdown_mode_available, "1kohm_to_gnd 100kohm_to_gnd three_state"); #define IIO_DEV_ATTR_DAC_POWERDOWN(_num, _show, _store, _addr) \ - IIO_DEVICE_ATTR(out##_num##_powerdown, \ + IIO_DEVICE_ATTR(out_voltage##_num##_powerdown, \ S_IRUGO | S_IWUSR, _show, _store, _addr) static IIO_DEV_ATTR_DAC_POWERDOWN(0, ad5624r_read_dac_powerdown, @@ -200,17 +200,17 @@ static IIO_DEV_ATTR_DAC_POWERDOWN(3, ad5624r_read_dac_powerdown, ad5624r_write_dac_powerdown, 3); static struct attribute *ad5624r_attributes[] = { - &iio_dev_attr_out0_raw.dev_attr.attr, - &iio_dev_attr_out1_raw.dev_attr.attr, - &iio_dev_attr_out2_raw.dev_attr.attr, - &iio_dev_attr_out3_raw.dev_attr.attr, - &iio_dev_attr_out0_powerdown.dev_attr.attr, - &iio_dev_attr_out1_powerdown.dev_attr.attr, - &iio_dev_attr_out2_powerdown.dev_attr.attr, - &iio_dev_attr_out3_powerdown.dev_attr.attr, - &iio_dev_attr_out_powerdown_mode.dev_attr.attr, - &iio_const_attr_out_powerdown_mode_available.dev_attr.attr, - &iio_dev_attr_out_scale.dev_attr.attr, + &iio_dev_attr_out_voltage0_raw.dev_attr.attr, + &iio_dev_attr_out_voltage1_raw.dev_attr.attr, + &iio_dev_attr_out_voltage2_raw.dev_attr.attr, + &iio_dev_attr_out_voltage3_raw.dev_attr.attr, + &iio_dev_attr_out_voltage0_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage1_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage2_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage3_powerdown.dev_attr.attr, + &iio_dev_attr_out_voltage_powerdown_mode.dev_attr.attr, + &iio_const_attr_out_voltage_powerdown_mode_available.dev_attr.attr, + &iio_dev_attr_out_voltage_scale.dev_attr.attr, NULL, }; @@ -226,15 +226,15 @@ static const struct iio_info ad5624r_info = { static int __devinit ad5624r_probe(struct spi_device *spi) { struct ad5624r_state *st; + struct iio_dev *indio_dev; int ret, voltage_uv = 0; - st = kzalloc(sizeof(*st), GFP_KERNEL); - if (st == NULL) { + indio_dev = iio_allocate_device(sizeof(*st)); + if (indio_dev == NULL) { ret = -ENOMEM; goto error_ret; } - spi_set_drvdata(spi, st); - + st = iio_priv(indio_dev); st->reg = regulator_get(&spi->dev, "vcc"); if (!IS_ERR(st->reg)) { ret = regulator_enable(st->reg); @@ -244,6 +244,7 @@ static int __devinit ad5624r_probe(struct spi_device *spi) voltage_uv = regulator_get_voltage(st->reg); } + spi_set_drvdata(spi, indio_dev); st->chip_info = &ad5624r_chip_info_tbl[spi_get_device_id(spi)->driver_data]; @@ -253,54 +254,46 @@ static int __devinit ad5624r_probe(struct spi_device *spi) st->vref_mv = st->chip_info->int_vref_mv; st->us = spi; - st->indio_dev = iio_allocate_device(0); - if (st->indio_dev == NULL) { - ret = -ENOMEM; - goto error_disable_reg; - } - st->indio_dev->dev.parent = &spi->dev; - st->indio_dev->name = spi_get_device_id(spi)->name; - st->indio_dev->info = &ad5624r_info; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->modes = INDIO_DIRECT_MODE; - ret = iio_device_register(st->indio_dev); - if (ret) - goto error_free_dev; + indio_dev->dev.parent = &spi->dev; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->info = &ad5624r_info; + indio_dev->modes = INDIO_DIRECT_MODE; ret = ad5624r_spi_write(spi, AD5624R_CMD_INTERNAL_REFER_SETUP, 0, !!voltage_uv, 16); if (ret) - goto error_free_dev; + goto error_disable_reg; + + ret = iio_device_register(indio_dev); + if (ret) + goto error_disable_reg; return 0; -error_free_dev: - iio_free_device(st->indio_dev); error_disable_reg: if (!IS_ERR(st->reg)) regulator_disable(st->reg); error_put_reg: if (!IS_ERR(st->reg)) regulator_put(st->reg); - - kfree(st); + iio_free_device(indio_dev); error_ret: + return ret; } static int __devexit ad5624r_remove(struct spi_device *spi) { - struct ad5624r_state *st = spi_get_drvdata(spi); - - iio_device_unregister(st->indio_dev); + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad5624r_state *st = iio_priv(indio_dev); + iio_device_unregister(indio_dev); if (!IS_ERR(st->reg)) { regulator_disable(st->reg); regulator_put(st->reg); } - - kfree(st); + iio_free_device(indio_dev); return 0; } |