Lines Matching defs:wm8400
19 #include <linux/mfd/wm8400-private.h>
20 #include <linux/mfd/wm8400-audio.h>
117 static int wm8400_read(struct wm8400 *wm8400, u8 reg, int num_regs, u16 *dest)
121 BUG_ON(reg + num_regs > ARRAY_SIZE(wm8400->reg_cache));
126 ret = wm8400->read_dev(wm8400->io_data, reg,
137 memcpy(dest, &wm8400->reg_cache[reg], num_regs * sizeof(u16));
142 static int wm8400_write(struct wm8400 *wm8400, u8 reg, int num_regs,
147 BUG_ON(reg + num_regs > ARRAY_SIZE(wm8400->reg_cache));
151 wm8400->reg_cache[reg + i] = src[i];
156 ret = wm8400->write_dev(wm8400->io_data, reg, num_regs, src);
166 * @wm8400: Pointer to wm8400 control structure
171 u16 wm8400_reg_read(struct wm8400 *wm8400, u8 reg)
175 mutex_lock(&wm8400->io_lock);
177 wm8400_read(wm8400, reg, 1, &val);
179 mutex_unlock(&wm8400->io_lock);
185 int wm8400_block_read(struct wm8400 *wm8400, u8 reg, int count, u16 *data)
189 mutex_lock(&wm8400->io_lock);
191 ret = wm8400_read(wm8400, reg, count, data);
193 mutex_unlock(&wm8400->io_lock);
202 * @wm8400: Pointer to wm8400 control structure
207 int wm8400_set_bits(struct wm8400 *wm8400, u8 reg, u16 mask, u16 val)
212 mutex_lock(&wm8400->io_lock);
214 ret = wm8400_read(wm8400, reg, 1, &tmp);
217 ret = wm8400_write(wm8400, reg, 1, &tmp);
219 mutex_unlock(&wm8400->io_lock);
229 void wm8400_reset_codec_reg_cache(struct wm8400 *wm8400)
233 mutex_lock(&wm8400->io_lock);
236 for (i = 0; i < ARRAY_SIZE(wm8400->reg_cache); i++)
238 wm8400->reg_cache[i] = reg_data[i].default_val;
240 mutex_unlock(&wm8400->io_lock);
244 static int wm8400_register_codec(struct wm8400 *wm8400)
247 .name = "wm8400-codec",
248 .driver_data = wm8400,
251 return mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0);
261 static int wm8400_init(struct wm8400 *wm8400,
267 mutex_init(&wm8400->io_lock);
269 dev_set_drvdata(wm8400->dev, wm8400);
272 ret = wm8400->read_dev(wm8400->io_data, WM8400_RESET_ID, 1, ®);
274 dev_err(wm8400->dev, "Chip ID register read failed\n");
278 dev_err(wm8400->dev, "Device is not a WM8400, ID is %x\n",
287 ret = wm8400->read_dev(wm8400->io_data, 0,
288 ARRAY_SIZE(wm8400->reg_cache),
289 wm8400->reg_cache);
291 dev_err(wm8400->dev, "Register cache read failed\n");
294 for (i = 0; i < ARRAY_SIZE(wm8400->reg_cache); i++)
295 wm8400->reg_cache[i] = be16_to_cpu(wm8400->reg_cache[i]);
298 if (!(wm8400->reg_cache[WM8400_POWER_MANAGEMENT_1] & WM8400_CODEC_ENA))
299 for (i = 0; i < ARRAY_SIZE(wm8400->reg_cache); i++)
301 wm8400->reg_cache[i] = reg_data[i].default_val;
303 ret = wm8400_read(wm8400, WM8400_ID, 1, ®);
305 dev_err(wm8400->dev, "ID register read failed: %d\n", ret);
309 dev_info(wm8400->dev, "WM8400 revision %x\n", reg);
311 ret = wm8400_register_codec(wm8400);
313 dev_err(wm8400->dev, "Failed to register codec\n");
318 ret = pdata->platform_init(wm8400->dev);
320 dev_err(wm8400->dev, "Platform init failed: %d\n",
325 dev_warn(wm8400->dev, "No platform initialisation supplied\n");
330 mfd_remove_devices(wm8400->dev);
334 static void wm8400_release(struct wm8400 *wm8400)
336 mfd_remove_devices(wm8400->dev);
396 struct wm8400 *wm8400;
399 wm8400 = kzalloc(sizeof(struct wm8400), GFP_KERNEL);
400 if (wm8400 == NULL) {
405 wm8400->io_data = i2c;
406 wm8400->read_dev = wm8400_i2c_read;
407 wm8400->write_dev = wm8400_i2c_write;
408 wm8400->dev = &i2c->dev;
409 i2c_set_clientdata(i2c, wm8400);
411 ret = wm8400_init(wm8400, i2c->dev.platform_data);
418 kfree(wm8400);
425 struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
427 wm8400_release(wm8400);
428 kfree(wm8400);
434 { "wm8400", 0 },