2  * Driver for the 1250-EV1 audio I/O module
16 #include <linux/i2c.h>
17 #include <linux/gpio.h>
20 #include <sound/soc-dapm.h>
21 #include <sound/wm1250-ev1.h>
32 	struct gpio gpios[WM1250_EV1_NUM_GPIOS];
38 	struct wm1250_priv *wm1250 = dev_get_drvdata(component->dev);  in wm1250_ev1_set_bias_level()
42 		ena = wm1250->gpios[WM1250_EV1_GPIO_CLK_ENA].gpio;  in wm1250_ev1_set_bias_level()
44 		ena = -1;  in wm1250_ev1_set_bias_level()
68 SND_SOC_DAPM_ADC("ADC", "wm1250-ev1 Capture", SND_SOC_NOPM, 0, 0),
69 SND_SOC_DAPM_DAC("DAC", "wm1250-ev1 Playback", SND_SOC_NOPM, 0, 0),
84 	struct wm1250_priv *wm1250 = snd_soc_component_get_drvdata(dai->component);  in wm1250_ev1_hw_params()
88 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,  in wm1250_ev1_hw_params()
90 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,  in wm1250_ev1_hw_params()
94 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,  in wm1250_ev1_hw_params()
96 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,  in wm1250_ev1_hw_params()
100 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,  in wm1250_ev1_hw_params()
102 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,  in wm1250_ev1_hw_params()
106 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,  in wm1250_ev1_hw_params()
108 		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,  in wm1250_ev1_hw_params()
112 		return -EINVAL;  in wm1250_ev1_hw_params()
126 	.name = "wm1250-ev1",
155 static int wm1250_ev1_pdata(struct i2c_client *i2c)  in wm1250_ev1_pdata()  argument
157 	struct wm1250_ev1_pdata *pdata = dev_get_platdata(&i2c->dev);  in wm1250_ev1_pdata()
164 	wm1250 = devm_kzalloc(&i2c->dev, sizeof(*wm1250), GFP_KERNEL);  in wm1250_ev1_pdata()
166 		ret = -ENOMEM;  in wm1250_ev1_pdata()
170 	for (i = 0; i < ARRAY_SIZE(wm1250->gpios); i++) {  in wm1250_ev1_pdata()
171 		wm1250->gpios[i].gpio = pdata->gpios[i];  in wm1250_ev1_pdata()
172 		wm1250->gpios[i].label = wm1250_gpio_names[i];  in wm1250_ev1_pdata()
173 		wm1250->gpios[i].flags = GPIOF_OUT_INIT_LOW;  in wm1250_ev1_pdata()
175 	wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].flags = GPIOF_OUT_INIT_HIGH;  in wm1250_ev1_pdata()
176 	wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].flags = GPIOF_OUT_INIT_HIGH;  in wm1250_ev1_pdata()
178 	ret = gpio_request_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));  in wm1250_ev1_pdata()
180 		dev_err(&i2c->dev, "Failed to get GPIOs: %d\n", ret);  in wm1250_ev1_pdata()
184 	dev_set_drvdata(&i2c->dev, wm1250);  in wm1250_ev1_pdata()
192 static void wm1250_ev1_free(struct i2c_client *i2c)  in wm1250_ev1_free()  argument
194 	struct wm1250_priv *wm1250 = dev_get_drvdata(&i2c->dev);  in wm1250_ev1_free()
197 		gpio_free_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));  in wm1250_ev1_free()
200 static int wm1250_ev1_probe(struct i2c_client *i2c,  in wm1250_ev1_probe()  argument
205 	dev_set_drvdata(&i2c->dev, NULL);  in wm1250_ev1_probe()
207 	board = i2c_smbus_read_byte_data(i2c, 0);  in wm1250_ev1_probe()
209 		dev_err(&i2c->dev, "Failed to read ID: %d\n", board);  in wm1250_ev1_probe()
217 		dev_err(&i2c->dev, "Unknown board ID %d\n", id);  in wm1250_ev1_probe()
218 		return -ENODEV;  in wm1250_ev1_probe()
221 	dev_info(&i2c->dev, "revision %d\n", rev + 1);  in wm1250_ev1_probe()
223 	ret = wm1250_ev1_pdata(i2c);  in wm1250_ev1_probe()
227 	ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_dev_wm1250_ev1,  in wm1250_ev1_probe()
230 		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);  in wm1250_ev1_probe()
231 		wm1250_ev1_free(i2c);  in wm1250_ev1_probe()
238 static int wm1250_ev1_remove(struct i2c_client *i2c)  in wm1250_ev1_remove()  argument
240 	wm1250_ev1_free(i2c);  in wm1250_ev1_remove()
246 	{ "wm1250-ev1", 0 },
249 MODULE_DEVICE_TABLE(i2c, wm1250_ev1_i2c_id);
253 		.name = "wm1250-ev1",
263 MODULE_DESCRIPTION("WM1250-EV1 audio I/O module driver");