diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/ili9320.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/backlight/ili9320.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/ili9320.c b/ANDROID_3.4.5/drivers/video/backlight/ili9320.c deleted file mode 100644 index 5118a9f0..00000000 --- a/ANDROID_3.4.5/drivers/video/backlight/ili9320.c +++ /dev/null @@ -1,331 +0,0 @@ -/* drivers/video/backlight/ili9320.c - * - * ILI9320 LCD controller driver core. - * - * Copyright 2007 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks <ben@simtec.co.uk> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/lcd.h> -#include <linux/module.h> -#include <linux/slab.h> - -#include <linux/spi/spi.h> - -#include <video/ili9320.h> - -#include "ili9320.h" - - -static inline int ili9320_write_spi(struct ili9320 *ili, - unsigned int reg, - unsigned int value) -{ - struct ili9320_spi *spi = &ili->access.spi; - unsigned char *addr = spi->buffer_addr; - unsigned char *data = spi->buffer_data; - - /* spi message consits of: - * first byte: ID and operation - */ - - addr[0] = spi->id | ILI9320_SPI_INDEX | ILI9320_SPI_WRITE; - addr[1] = reg >> 8; - addr[2] = reg; - - /* second message is the data to transfer */ - - data[0] = spi->id | ILI9320_SPI_DATA | ILI9320_SPI_WRITE; - data[1] = value >> 8; - data[2] = value; - - return spi_sync(spi->dev, &spi->message); -} - -int ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value) -{ - dev_dbg(ili->dev, "write: reg=%02x, val=%04x\n", reg, value); - return ili->write(ili, reg, value); -} - -EXPORT_SYMBOL_GPL(ili9320_write); - -int ili9320_write_regs(struct ili9320 *ili, - struct ili9320_reg *values, - int nr_values) -{ - int index; - int ret; - - for (index = 0; index < nr_values; index++, values++) { - ret = ili9320_write(ili, values->address, values->value); - if (ret != 0) - return ret; - } - - return 0; -} - -EXPORT_SYMBOL_GPL(ili9320_write_regs); - -static void ili9320_reset(struct ili9320 *lcd) -{ - struct ili9320_platdata *cfg = lcd->platdata; - - cfg->reset(1); - mdelay(50); - - cfg->reset(0); - mdelay(50); - - cfg->reset(1); - mdelay(100); -} - -static inline int ili9320_init_chip(struct ili9320 *lcd) -{ - int ret; - - ili9320_reset(lcd); - - ret = lcd->client->init(lcd, lcd->platdata); - if (ret != 0) { - dev_err(lcd->dev, "failed to initialise display\n"); - return ret; - } - - lcd->initialised = 1; - return 0; -} - -static inline int ili9320_power_on(struct ili9320 *lcd) -{ - if (!lcd->initialised) - ili9320_init_chip(lcd); - - lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE); - ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1); - - return 0; -} - -static inline int ili9320_power_off(struct ili9320 *lcd) -{ - lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE); - ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1); - - return 0; -} - -#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL) - -static int ili9320_power(struct ili9320 *lcd, int power) -{ - int ret = 0; - - dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power); - - if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) - ret = ili9320_power_on(lcd); - else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power)) - ret = ili9320_power_off(lcd); - - if (ret == 0) - lcd->power = power; - else - dev_warn(lcd->dev, "failed to set power mode %d\n", power); - - return ret; -} - -static inline struct ili9320 *to_our_lcd(struct lcd_device *lcd) -{ - return lcd_get_data(lcd); -} - -static int ili9320_set_power(struct lcd_device *ld, int power) -{ - struct ili9320 *lcd = to_our_lcd(ld); - - return ili9320_power(lcd, power); -} - -static int ili9320_get_power(struct lcd_device *ld) -{ - struct ili9320 *lcd = to_our_lcd(ld); - - return lcd->power; -} - -static struct lcd_ops ili9320_ops = { - .get_power = ili9320_get_power, - .set_power = ili9320_set_power, -}; - -static void __devinit ili9320_setup_spi(struct ili9320 *ili, - struct spi_device *dev) -{ - struct ili9320_spi *spi = &ili->access.spi; - - ili->write = ili9320_write_spi; - spi->dev = dev; - - /* fill the two messages we are going to use to send the data - * with, the first the address followed by the data. The datasheet - * says they should be done as two distinct cycles of the SPI CS line. - */ - - spi->xfer[0].tx_buf = spi->buffer_addr; - spi->xfer[1].tx_buf = spi->buffer_data; - spi->xfer[0].len = 3; - spi->xfer[1].len = 3; - spi->xfer[0].bits_per_word = 8; - spi->xfer[1].bits_per_word = 8; - spi->xfer[0].cs_change = 1; - - spi_message_init(&spi->message); - spi_message_add_tail(&spi->xfer[0], &spi->message); - spi_message_add_tail(&spi->xfer[1], &spi->message); -} - -int __devinit ili9320_probe_spi(struct spi_device *spi, - struct ili9320_client *client) -{ - struct ili9320_platdata *cfg = spi->dev.platform_data; - struct device *dev = &spi->dev; - struct ili9320 *ili; - struct lcd_device *lcd; - int ret = 0; - - /* verify we where given some information */ - - if (cfg == NULL) { - dev_err(dev, "no platform data supplied\n"); - return -EINVAL; - } - - if (cfg->hsize <= 0 || cfg->vsize <= 0 || cfg->reset == NULL) { - dev_err(dev, "invalid platform data supplied\n"); - return -EINVAL; - } - - /* allocate and initialse our state */ - - ili = kzalloc(sizeof(struct ili9320), GFP_KERNEL); - if (ili == NULL) { - dev_err(dev, "no memory for device\n"); - return -ENOMEM; - } - - ili->access.spi.id = ILI9320_SPI_IDCODE | ILI9320_SPI_ID(1); - - ili->dev = dev; - ili->client = client; - ili->power = FB_BLANK_POWERDOWN; - ili->platdata = cfg; - - dev_set_drvdata(&spi->dev, ili); - - ili9320_setup_spi(ili, spi); - - lcd = lcd_device_register("ili9320", dev, ili, &ili9320_ops); - if (IS_ERR(lcd)) { - dev_err(dev, "failed to register lcd device\n"); - ret = PTR_ERR(lcd); - goto err_free; - } - - ili->lcd = lcd; - - dev_info(dev, "initialising %s\n", client->name); - - ret = ili9320_power(ili, FB_BLANK_UNBLANK); - if (ret != 0) { - dev_err(dev, "failed to set lcd power state\n"); - goto err_unregister; - } - - return 0; - - err_unregister: - lcd_device_unregister(lcd); - - err_free: - kfree(ili); - - return ret; -} - -EXPORT_SYMBOL_GPL(ili9320_probe_spi); - -int __devexit ili9320_remove(struct ili9320 *ili) -{ - ili9320_power(ili, FB_BLANK_POWERDOWN); - - lcd_device_unregister(ili->lcd); - kfree(ili); - - return 0; -} - -EXPORT_SYMBOL_GPL(ili9320_remove); - -#ifdef CONFIG_PM -int ili9320_suspend(struct ili9320 *lcd, pm_message_t state) -{ - int ret; - - dev_dbg(lcd->dev, "%s: event %d\n", __func__, state.event); - - if (state.event == PM_EVENT_SUSPEND) { - ret = ili9320_power(lcd, FB_BLANK_POWERDOWN); - - if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) { - ili9320_write(lcd, ILI9320_POWER1, lcd->power1 | - ILI9320_POWER1_SLP | - ILI9320_POWER1_DSTB); - lcd->initialised = 0; - } - - return ret; - } - - return 0; -} - -EXPORT_SYMBOL_GPL(ili9320_suspend); - -int ili9320_resume(struct ili9320 *lcd) -{ - dev_info(lcd->dev, "resuming from power state %d\n", lcd->power); - - if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) { - ili9320_write(lcd, ILI9320_POWER1, 0x00); - } - - return ili9320_power(lcd, FB_BLANK_UNBLANK); -} - -EXPORT_SYMBOL_GPL(ili9320_resume); -#endif - -/* Power down all displays on reboot, poweroff or halt */ -void ili9320_shutdown(struct ili9320 *lcd) -{ - ili9320_power(lcd, FB_BLANK_POWERDOWN); -} - -EXPORT_SYMBOL_GPL(ili9320_shutdown); - -MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>"); -MODULE_DESCRIPTION("ILI9320 LCD Driver"); -MODULE_LICENSE("GPL v2"); |