Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 1 | /* |
| 2 | * AD5624R, AD5644R, AD5664R Digital to analog convertors spi driver |
| 3 | * |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 4 | * Copyright 2010-2011 Analog Devices Inc. |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 5 | * |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 6 | * Licensed under the GPL-2. |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include <linux/interrupt.h> |
| 10 | #include <linux/gpio.h> |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/spi/spi.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/sysfs.h> |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 17 | #include <linux/regulator/consumer.h> |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 18 | |
| 19 | #include "../iio.h" |
| 20 | #include "../sysfs.h" |
| 21 | #include "dac.h" |
| 22 | #include "ad5624r.h" |
| 23 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 24 | static const struct ad5624r_chip_info ad5624r_chip_info_tbl[] = { |
| 25 | [ID_AD5624R3] = { |
| 26 | .bits = 12, |
| 27 | .int_vref_mv = 1250, |
| 28 | }, |
| 29 | [ID_AD5644R3] = { |
| 30 | .bits = 14, |
| 31 | .int_vref_mv = 1250, |
| 32 | }, |
| 33 | [ID_AD5664R3] = { |
| 34 | .bits = 16, |
| 35 | .int_vref_mv = 1250, |
| 36 | }, |
| 37 | [ID_AD5624R5] = { |
| 38 | .bits = 12, |
| 39 | .int_vref_mv = 2500, |
| 40 | }, |
| 41 | [ID_AD5644R5] = { |
| 42 | .bits = 14, |
| 43 | .int_vref_mv = 2500, |
| 44 | }, |
| 45 | [ID_AD5664R5] = { |
| 46 | .bits = 16, |
| 47 | .int_vref_mv = 2500, |
| 48 | }, |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 49 | }; |
| 50 | |
Michael Hennerich | df9cd10 | 2010-11-19 15:16:44 +0100 | [diff] [blame] | 51 | static int ad5624r_spi_write(struct spi_device *spi, |
| 52 | u8 cmd, u8 addr, u16 val, u8 len) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 53 | { |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 54 | u32 data; |
| 55 | u8 msg[3]; |
| 56 | |
| 57 | /* |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 58 | * The input shift register is 24 bits wide. The first two bits are |
| 59 | * don't care bits. The next three are the command bits, C2 to C0, |
| 60 | * followed by the 3-bit DAC address, A2 to A0, and then the |
| 61 | * 16-, 14-, 12-bit data-word. The data-word comprises the 16-, |
| 62 | * 14-, 12-bit input code followed by 0, 2, or 4 don't care bits, |
| 63 | * for the AD5664R, AD5644R, and AD5624R, respectively. |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 64 | */ |
| 65 | data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << (16 - len)); |
| 66 | msg[0] = data >> 16; |
| 67 | msg[1] = data >> 8; |
| 68 | msg[2] = data; |
| 69 | |
Michael Hennerich | df9cd10 | 2010-11-19 15:16:44 +0100 | [diff] [blame] | 70 | return spi_write(spi, msg, 3); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | static ssize_t ad5624r_write_dac(struct device *dev, |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 74 | struct device_attribute *attr, |
| 75 | const char *buf, size_t len) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 76 | { |
| 77 | long readin; |
| 78 | int ret; |
| 79 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 80 | struct ad5624r_state *st = indio_dev->dev_data; |
| 81 | struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); |
| 82 | |
| 83 | ret = strict_strtol(buf, 10, &readin); |
| 84 | if (ret) |
| 85 | return ret; |
| 86 | |
Michael Hennerich | df9cd10 | 2010-11-19 15:16:44 +0100 | [diff] [blame] | 87 | ret = ad5624r_spi_write(st->us, AD5624R_CMD_WRITE_INPUT_N_UPDATE_N, |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 88 | this_attr->address, readin, |
| 89 | st->chip_info->bits); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 90 | return ret ? ret : len; |
| 91 | } |
| 92 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 93 | static ssize_t ad5624r_read_powerdown_mode(struct device *dev, |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 94 | struct device_attribute *attr, char *buf) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 95 | { |
| 96 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 97 | struct ad5624r_state *st = indio_dev->dev_data; |
| 98 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 99 | char mode[][15] = {"", "1kohm_to_gnd", "100kohm_to_gnd", "three_state"}; |
| 100 | |
| 101 | return sprintf(buf, "%s\n", mode[st->pwr_down_mode]); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 102 | } |
| 103 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 104 | static ssize_t ad5624r_write_powerdown_mode(struct device *dev, |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 105 | struct device_attribute *attr, |
| 106 | const char *buf, size_t len) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 107 | { |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 108 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 109 | struct ad5624r_state *st = indio_dev->dev_data; |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 110 | int ret; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 111 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 112 | if (sysfs_streq(buf, "1kohm_to_gnd")) |
| 113 | st->pwr_down_mode = AD5624R_LDAC_PWRDN_1K; |
| 114 | else if (sysfs_streq(buf, "100kohm_to_gnd")) |
| 115 | st->pwr_down_mode = AD5624R_LDAC_PWRDN_100K; |
| 116 | else if (sysfs_streq(buf, "three_state")) |
| 117 | st->pwr_down_mode = AD5624R_LDAC_PWRDN_3STATE; |
| 118 | else |
| 119 | ret = -EINVAL; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 120 | |
| 121 | return ret ? ret : len; |
| 122 | } |
| 123 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 124 | static ssize_t ad5624r_read_dac_powerdown(struct device *dev, |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 125 | struct device_attribute *attr, |
| 126 | char *buf) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 127 | { |
| 128 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 129 | struct ad5624r_state *st = indio_dev->dev_data; |
| 130 | struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); |
| 131 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 132 | return sprintf(buf, "%d\n", |
| 133 | !!(st->pwr_down_mask & (1 << this_attr->address))); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 134 | } |
| 135 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 136 | static ssize_t ad5624r_write_dac_powerdown(struct device *dev, |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 137 | struct device_attribute *attr, |
| 138 | const char *buf, size_t len) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 139 | { |
| 140 | long readin; |
| 141 | int ret; |
| 142 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 143 | struct ad5624r_state *st = indio_dev->dev_data; |
| 144 | struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); |
| 145 | |
| 146 | ret = strict_strtol(buf, 10, &readin); |
| 147 | if (ret) |
| 148 | return ret; |
| 149 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 150 | if (readin == 1) |
| 151 | st->pwr_down_mask |= (1 << this_attr->address); |
| 152 | else if (!readin) |
| 153 | st->pwr_down_mask &= ~(1 << this_attr->address); |
| 154 | else |
| 155 | ret = -EINVAL; |
| 156 | |
Michael Hennerich | df9cd10 | 2010-11-19 15:16:44 +0100 | [diff] [blame] | 157 | ret = ad5624r_spi_write(st->us, AD5624R_CMD_POWERDOWN_DAC, 0, |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 158 | (st->pwr_down_mode << 4) | |
| 159 | st->pwr_down_mask, 16); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 160 | |
| 161 | return ret ? ret : len; |
| 162 | } |
| 163 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 164 | static ssize_t ad5624r_show_scale(struct device *dev, |
| 165 | struct device_attribute *attr, |
| 166 | char *buf) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 167 | { |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 168 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
| 169 | struct ad5624r_state *st = iio_dev_get_devdata(dev_info); |
| 170 | /* Corresponds to Vref / 2^(bits) */ |
| 171 | unsigned int scale_uv = (st->vref_mv * 1000) >> st->chip_info->bits; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 172 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 173 | return sprintf(buf, "%d.%03d\n", scale_uv / 1000, scale_uv % 1000); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 174 | } |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 175 | static IIO_DEVICE_ATTR(out_scale, S_IRUGO, ad5624r_show_scale, NULL, 0); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 176 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 177 | static ssize_t ad5624r_show_name(struct device *dev, |
| 178 | struct device_attribute *attr, |
| 179 | char *buf) |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 180 | { |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 181 | struct iio_dev *dev_info = dev_get_drvdata(dev); |
| 182 | struct ad5624r_state *st = iio_dev_get_devdata(dev_info); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 183 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 184 | return sprintf(buf, "%s\n", spi_get_device_id(st->us)->name); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 185 | } |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 186 | static IIO_DEVICE_ATTR(name, S_IRUGO, ad5624r_show_name, NULL, 0); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 187 | |
Michael Hennerich | 51f8ad3 | 2010-11-19 15:16:43 +0100 | [diff] [blame] | 188 | static IIO_DEV_ATTR_OUT_RAW(0, ad5624r_write_dac, AD5624R_ADDR_DAC0); |
| 189 | static IIO_DEV_ATTR_OUT_RAW(1, ad5624r_write_dac, AD5624R_ADDR_DAC1); |
| 190 | static IIO_DEV_ATTR_OUT_RAW(2, ad5624r_write_dac, AD5624R_ADDR_DAC2); |
| 191 | static IIO_DEV_ATTR_OUT_RAW(3, ad5624r_write_dac, AD5624R_ADDR_DAC3); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 192 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 193 | static IIO_DEVICE_ATTR(out_powerdown_mode, S_IRUGO | |
| 194 | S_IWUSR, ad5624r_read_powerdown_mode, |
| 195 | ad5624r_write_powerdown_mode, 0); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 196 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 197 | static IIO_CONST_ATTR(out_powerdown_mode_available, |
| 198 | "1kohm_to_gnd 100kohm_to_gnd three_state"); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 199 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 200 | #define IIO_DEV_ATTR_DAC_POWERDOWN(_num, _show, _store, _addr) \ |
| 201 | IIO_DEVICE_ATTR(out##_num##_powerdown, \ |
| 202 | S_IRUGO | S_IWUSR, _show, _store, _addr) |
| 203 | |
| 204 | static IIO_DEV_ATTR_DAC_POWERDOWN(0, ad5624r_read_dac_powerdown, |
| 205 | ad5624r_write_dac_powerdown, 0); |
| 206 | static IIO_DEV_ATTR_DAC_POWERDOWN(1, ad5624r_read_dac_powerdown, |
| 207 | ad5624r_write_dac_powerdown, 1); |
| 208 | static IIO_DEV_ATTR_DAC_POWERDOWN(2, ad5624r_read_dac_powerdown, |
| 209 | ad5624r_write_dac_powerdown, 2); |
| 210 | static IIO_DEV_ATTR_DAC_POWERDOWN(3, ad5624r_read_dac_powerdown, |
| 211 | ad5624r_write_dac_powerdown, 3); |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 212 | |
| 213 | static struct attribute *ad5624r_attributes[] = { |
Michael Hennerich | 51f8ad3 | 2010-11-19 15:16:43 +0100 | [diff] [blame] | 214 | &iio_dev_attr_out0_raw.dev_attr.attr, |
| 215 | &iio_dev_attr_out1_raw.dev_attr.attr, |
| 216 | &iio_dev_attr_out2_raw.dev_attr.attr, |
| 217 | &iio_dev_attr_out3_raw.dev_attr.attr, |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 218 | &iio_dev_attr_out0_powerdown.dev_attr.attr, |
| 219 | &iio_dev_attr_out1_powerdown.dev_attr.attr, |
| 220 | &iio_dev_attr_out2_powerdown.dev_attr.attr, |
| 221 | &iio_dev_attr_out3_powerdown.dev_attr.attr, |
| 222 | &iio_dev_attr_out_powerdown_mode.dev_attr.attr, |
| 223 | &iio_const_attr_out_powerdown_mode_available.dev_attr.attr, |
| 224 | &iio_dev_attr_out_scale.dev_attr.attr, |
| 225 | &iio_dev_attr_name.dev_attr.attr, |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 226 | NULL, |
| 227 | }; |
| 228 | |
| 229 | static const struct attribute_group ad5624r_attribute_group = { |
| 230 | .attrs = ad5624r_attributes, |
| 231 | }; |
| 232 | |
| 233 | static int __devinit ad5624r_probe(struct spi_device *spi) |
| 234 | { |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 235 | struct ad5624r_state *st; |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 236 | int ret, voltage_uv = 0; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 237 | |
| 238 | st = kzalloc(sizeof(*st), GFP_KERNEL); |
| 239 | if (st == NULL) { |
| 240 | ret = -ENOMEM; |
| 241 | goto error_ret; |
| 242 | } |
| 243 | spi_set_drvdata(spi, st); |
| 244 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 245 | st->reg = regulator_get(&spi->dev, "vcc"); |
| 246 | if (!IS_ERR(st->reg)) { |
| 247 | ret = regulator_enable(st->reg); |
| 248 | if (ret) |
| 249 | goto error_put_reg; |
| 250 | |
| 251 | voltage_uv = regulator_get_voltage(st->reg); |
| 252 | } |
| 253 | |
| 254 | st->chip_info = |
| 255 | &ad5624r_chip_info_tbl[spi_get_device_id(spi)->driver_data]; |
| 256 | |
| 257 | if (voltage_uv) |
| 258 | st->vref_mv = voltage_uv / 1000; |
| 259 | else |
| 260 | st->vref_mv = st->chip_info->int_vref_mv; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 261 | |
| 262 | st->us = spi; |
| 263 | st->indio_dev = iio_allocate_device(); |
| 264 | if (st->indio_dev == NULL) { |
| 265 | ret = -ENOMEM; |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 266 | goto error_disable_reg; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 267 | } |
| 268 | st->indio_dev->dev.parent = &spi->dev; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 269 | st->indio_dev->attrs = &ad5624r_attribute_group; |
| 270 | st->indio_dev->dev_data = (void *)(st); |
| 271 | st->indio_dev->driver_module = THIS_MODULE; |
| 272 | st->indio_dev->modes = INDIO_DIRECT_MODE; |
| 273 | |
| 274 | ret = iio_device_register(st->indio_dev); |
| 275 | if (ret) |
| 276 | goto error_free_dev; |
| 277 | |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 278 | ret = ad5624r_spi_write(spi, AD5624R_CMD_INTERNAL_REFER_SETUP, 0, |
| 279 | !!voltage_uv, 16); |
| 280 | if (ret) |
| 281 | goto error_free_dev; |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 282 | |
| 283 | return 0; |
| 284 | |
| 285 | error_free_dev: |
| 286 | iio_free_device(st->indio_dev); |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 287 | error_disable_reg: |
| 288 | if (!IS_ERR(st->reg)) |
| 289 | regulator_disable(st->reg); |
| 290 | error_put_reg: |
| 291 | if (!IS_ERR(st->reg)) |
| 292 | regulator_put(st->reg); |
| 293 | |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 294 | kfree(st); |
| 295 | error_ret: |
| 296 | return ret; |
| 297 | } |
| 298 | |
| 299 | static int __devexit ad5624r_remove(struct spi_device *spi) |
| 300 | { |
| 301 | struct ad5624r_state *st = spi_get_drvdata(spi); |
| 302 | |
| 303 | iio_device_unregister(st->indio_dev); |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 304 | |
| 305 | if (!IS_ERR(st->reg)) { |
| 306 | regulator_disable(st->reg); |
| 307 | regulator_put(st->reg); |
| 308 | } |
| 309 | |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 310 | kfree(st); |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
Michael Hennerich | ece30c1 | 2010-11-19 15:16:45 +0100 | [diff] [blame] | 315 | static const struct spi_device_id ad5624r_id[] = { |
Michael Hennerich | 14f88f1 | 2011-03-09 16:01:45 +0100 | [diff] [blame^] | 316 | {"ad5624r3", ID_AD5624R3}, |
| 317 | {"ad5644r3", ID_AD5644R3}, |
| 318 | {"ad5664r3", ID_AD5664R3}, |
| 319 | {"ad5624r5", ID_AD5624R5}, |
| 320 | {"ad5644r5", ID_AD5644R5}, |
| 321 | {"ad5664r5", ID_AD5664R5}, |
Michael Hennerich | ece30c1 | 2010-11-19 15:16:45 +0100 | [diff] [blame] | 322 | {} |
| 323 | }; |
| 324 | |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 325 | static struct spi_driver ad5624r_driver = { |
| 326 | .driver = { |
Michael Hennerich | 24d6050 | 2010-11-19 15:16:46 +0100 | [diff] [blame] | 327 | .name = "ad5624r", |
| 328 | .owner = THIS_MODULE, |
| 329 | }, |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 330 | .probe = ad5624r_probe, |
| 331 | .remove = __devexit_p(ad5624r_remove), |
Michael Hennerich | ece30c1 | 2010-11-19 15:16:45 +0100 | [diff] [blame] | 332 | .id_table = ad5624r_id, |
Barry Song | 6790e29 | 2010-10-27 21:44:07 -0400 | [diff] [blame] | 333 | }; |
| 334 | |
| 335 | static __init int ad5624r_spi_init(void) |
| 336 | { |
| 337 | return spi_register_driver(&ad5624r_driver); |
| 338 | } |
| 339 | module_init(ad5624r_spi_init); |
| 340 | |
| 341 | static __exit void ad5624r_spi_exit(void) |
| 342 | { |
| 343 | spi_unregister_driver(&ad5624r_driver); |
| 344 | } |
| 345 | module_exit(ad5624r_spi_exit); |
| 346 | |
| 347 | MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); |
| 348 | MODULE_DESCRIPTION("Analog Devices AD5624/44/64R DAC spi driver"); |
| 349 | MODULE_LICENSE("GPL v2"); |