drivers/mfd/wm8400-core.c

16 #include <linux/mfd/wm8400-private.h>
17 #include <linux/mfd/wm8400-audio.h>
33 static int wm8400_register_codec(struct wm8400 *wm8400)
36 		.name = "wm8400-codec",
37 		.platform_data = wm8400,
38 		.pdata_size = sizeof(*wm8400),
41 	return devm_mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0, NULL);
51 static int wm8400_init(struct wm8400 *wm8400,
58 	ret = regmap_read(wm8400->regmap, WM8400_RESET_ID, &reg);
60 		dev_err(wm8400->dev, "Chip ID register read failed\n");
64 		dev_err(wm8400->dev, "Device is not a WM8400, ID is %x\n",
69 	ret = regmap_read(wm8400->regmap, WM8400_ID, &reg);
71 		dev_err(wm8400->dev, "ID register read failed: %d\n", ret);
75 	dev_info(wm8400->dev, "WM8400 revision %x\n", reg);
77 	ret = wm8400_register_codec(wm8400);
79 		dev_err(wm8400->dev, "Failed to register codec\n");
84 		ret = pdata->platform_init(wm8400->dev);
86 			dev_err(wm8400->dev, "Platform init failed: %d\n",
91 		dev_warn(wm8400->dev, "No platform initialisation supplied\n");
110  * @wm8400: pointer to local driver data structure
112 void wm8400_reset_codec_reg_cache(struct wm8400 *wm8400)
114 	regmap_reinit_cache(wm8400->regmap, &wm8400_regmap_config);
121 	struct wm8400 *wm8400;
123 	wm8400 = devm_kzalloc(&i2c->dev, sizeof(struct wm8400), GFP_KERNEL);
124 	if (!wm8400)
127 	wm8400->regmap = devm_regmap_init_i2c(i2c, &wm8400_regmap_config);
128 	if (IS_ERR(wm8400->regmap))
129 		return PTR_ERR(wm8400->regmap);
131 	wm8400->dev = &i2c->dev;
132 	i2c_set_clientdata(i2c, wm8400);
134 	return wm8400_init(wm8400, dev_get_platdata(&i2c->dev));
138        { "wm8400", 0 },