22 #include <linux/spi/spi.h>
23 #include <linux/spi/l4f00242t03.h>
26 	struct spi_device	*spi;  member
46 static void l4f00242t03_lcd_init(struct spi_device *spi)  in l4f00242t03_lcd_init()  argument
48 	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);  in l4f00242t03_lcd_init()
49 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);  in l4f00242t03_lcd_init()
53 	dev_dbg(&spi->dev, "initializing LCD\n");  in l4f00242t03_lcd_init()
57 		dev_err(&spi->dev, "failed to set the IO regulator voltage.\n");  in l4f00242t03_lcd_init()
62 		dev_err(&spi->dev, "failed to enable the IO regulator.\n");  in l4f00242t03_lcd_init()
68 		dev_err(&spi->dev, "failed to set the core regulator voltage.\n");  in l4f00242t03_lcd_init()
74 		dev_err(&spi->dev, "failed to enable the core regulator.\n");  in l4f00242t03_lcd_init()
83 	spi_write(spi, (const u8 *)cmd, ARRAY_SIZE(cmd) * sizeof(u16));  in l4f00242t03_lcd_init()
86 static void l4f00242t03_lcd_powerdown(struct spi_device *spi)  in l4f00242t03_lcd_powerdown()  argument
88 	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);  in l4f00242t03_lcd_powerdown()
89 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);  in l4f00242t03_lcd_powerdown()
91 	dev_dbg(&spi->dev, "Powering down LCD\n");  in l4f00242t03_lcd_powerdown()
109 	struct spi_device *spi = priv->spi;  in l4f00242t03_lcd_power_set()  local
121 			dev_dbg(&spi->dev, "Resuming LCD\n");  in l4f00242t03_lcd_power_set()
123 			spi_write(spi, (const u8 *)&slpout, sizeof(u16));  in l4f00242t03_lcd_power_set()
125 			spi_write(spi, (const u8 *)&dison, sizeof(u16));  in l4f00242t03_lcd_power_set()
128 			l4f00242t03_lcd_init(spi);  in l4f00242t03_lcd_power_set()
135 			dev_dbg(&spi->dev, "Standby the LCD\n");  in l4f00242t03_lcd_power_set()
137 			spi_write(spi, (const u8 *)&disoff, sizeof(u16));  in l4f00242t03_lcd_power_set()
139 			spi_write(spi, (const u8 *)&slpin, sizeof(u16));  in l4f00242t03_lcd_power_set()
144 			l4f00242t03_lcd_init(spi);  in l4f00242t03_lcd_power_set()
152 			spi_write(spi, (const u8 *)&disoff, sizeof(u16));  in l4f00242t03_lcd_power_set()
154 			l4f00242t03_lcd_powerdown(spi);  in l4f00242t03_lcd_power_set()
168 static int l4f00242t03_probe(struct spi_device *spi)  in l4f00242t03_probe()  argument
171 	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);  in l4f00242t03_probe()
175 		dev_err(&spi->dev, "Uninitialized platform data.\n");  in l4f00242t03_probe()
179 	priv = devm_kzalloc(&spi->dev, sizeof(struct l4f00242t03_priv),  in l4f00242t03_probe()
184 	spi_set_drvdata(spi, priv);  in l4f00242t03_probe()
185 	spi->bits_per_word = 9;  in l4f00242t03_probe()
186 	spi_setup(spi);  in l4f00242t03_probe()
188 	priv->spi = spi;  in l4f00242t03_probe()
190 	ret = devm_gpio_request_one(&spi->dev, pdata->reset_gpio,  in l4f00242t03_probe()
193 		dev_err(&spi->dev,  in l4f00242t03_probe()
198 	ret = devm_gpio_request_one(&spi->dev, pdata->data_enable_gpio,  in l4f00242t03_probe()
201 		dev_err(&spi->dev,  in l4f00242t03_probe()
206 	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");  in l4f00242t03_probe()
208 		dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",  in l4f00242t03_probe()
213 	priv->core_reg = devm_regulator_get(&spi->dev, "vcore");  in l4f00242t03_probe()
215 		dev_err(&spi->dev, "%s: Unable to get the core regulator\n",  in l4f00242t03_probe()
220 	priv->ld = devm_lcd_device_register(&spi->dev, "l4f00242t03", &spi->dev,  in l4f00242t03_probe()
226 	l4f00242t03_lcd_init(spi);  in l4f00242t03_probe()
230 	dev_info(&spi->dev, "Epson l4f00242t03 lcd probed.\n");  in l4f00242t03_probe()
235 static int l4f00242t03_remove(struct spi_device *spi)  in l4f00242t03_remove()  argument
237 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);  in l4f00242t03_remove()
243 static void l4f00242t03_shutdown(struct spi_device *spi)  in l4f00242t03_shutdown()  argument
245 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);  in l4f00242t03_shutdown()