1cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks/* drivers/video/backlight/ili9320.c 2cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * 3cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * ILI9320 LCD controller driver core. 4cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * 5cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * Copyright 2007 Simtec Electronics 6cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * http://armlinux.simtec.co.uk/ 7cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * Ben Dooks <ben@simtec.co.uk> 8cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * 9cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * This program is free software; you can redistribute it and/or modify 10cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * it under the terms of the GNU General Public License version 2 as 11cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * published by the Free Software Foundation. 12cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks*/ 13cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 14cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/delay.h> 15cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/err.h> 16cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/fb.h> 17cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/init.h> 18cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/lcd.h> 19cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/module.h> 205a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 21cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 22cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <linux/spi/spi.h> 23cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 24cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include <video/ili9320.h> 25cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 26cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#include "ili9320.h" 27cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 28cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 29cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic inline int ili9320_write_spi(struct ili9320 *ili, 30cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks unsigned int reg, 31cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks unsigned int value) 32cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 33cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_spi *spi = &ili->access.spi; 34cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks unsigned char *addr = spi->buffer_addr; 35cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks unsigned char *data = spi->buffer_data; 36cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 37cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks /* spi message consits of: 38cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * first byte: ID and operation 39cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks */ 40cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 41cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks addr[0] = spi->id | ILI9320_SPI_INDEX | ILI9320_SPI_WRITE; 42cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks addr[1] = reg >> 8; 43cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks addr[2] = reg; 44cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 45cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks /* second message is the data to transfer */ 46cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 47cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks data[0] = spi->id | ILI9320_SPI_DATA | ILI9320_SPI_WRITE; 48cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks data[1] = value >> 8; 49cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks data[2] = value; 50cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 51cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return spi_sync(spi->dev, &spi->message); 52cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 53cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 54cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value) 55cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 56cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_dbg(ili->dev, "write: reg=%02x, val=%04x\n", reg, value); 57cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ili->write(ili, reg, value); 58cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 59cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 60cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_write); 61cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 62cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint ili9320_write_regs(struct ili9320 *ili, 63cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_reg *values, 64cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int nr_values) 65cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 66cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int index; 67cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int ret; 68cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 69cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks for (index = 0; index < nr_values; index++, values++) { 70cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = ili9320_write(ili, values->address, values->value); 71cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (ret != 0) 72cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ret; 73cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 74cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 75cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 76cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 77cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 78cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_write_regs); 79cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 80cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic void ili9320_reset(struct ili9320 *lcd) 81cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 82cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_platdata *cfg = lcd->platdata; 83cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 84cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks cfg->reset(1); 85cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks mdelay(50); 86cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 87cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks cfg->reset(0); 88cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks mdelay(50); 89cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 90cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks cfg->reset(1); 91cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks mdelay(100); 92cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 93cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 94cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic inline int ili9320_init_chip(struct ili9320 *lcd) 95cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 96cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int ret; 97cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 98cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_reset(lcd); 99cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 100cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = lcd->client->init(lcd, lcd->platdata); 101cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (ret != 0) { 102cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(lcd->dev, "failed to initialise display\n"); 103cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ret; 104cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 105cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 106cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd->initialised = 1; 107cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 108cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 109cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 110cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic inline int ili9320_power_on(struct ili9320 *lcd) 111cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 112cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (!lcd->initialised) 113cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_init_chip(lcd); 114cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 115cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE); 116cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1); 117cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 118cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 119cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 120cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 121cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic inline int ili9320_power_off(struct ili9320 *lcd) 122cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 123cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE); 124cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1); 125cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 126cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 127cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 128cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 129cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL) 130cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 131cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic int ili9320_power(struct ili9320 *lcd, int power) 132cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 133cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int ret = 0; 134cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 135cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power); 136cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 137cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) 138cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = ili9320_power_on(lcd); 139cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power)) 140cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = ili9320_power_off(lcd); 141cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 142cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (ret == 0) 143cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd->power = power; 144cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks else 145cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_warn(lcd->dev, "failed to set power mode %d\n", power); 146cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 147cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ret; 148cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 149cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 150cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic inline struct ili9320 *to_our_lcd(struct lcd_device *lcd) 151cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 152cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return lcd_get_data(lcd); 153cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 154cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 155cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic int ili9320_set_power(struct lcd_device *ld, int power) 156cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 157cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320 *lcd = to_our_lcd(ld); 158cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 159cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ili9320_power(lcd, power); 160cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 161cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 162cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic int ili9320_get_power(struct lcd_device *ld) 163cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 164cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320 *lcd = to_our_lcd(ld); 165cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 166cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return lcd->power; 167cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 168cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 169cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic struct lcd_ops ili9320_ops = { 170cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks .get_power = ili9320_get_power, 171cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks .set_power = ili9320_set_power, 172cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks}; 173cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 174cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksstatic void __devinit ili9320_setup_spi(struct ili9320 *ili, 175cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct spi_device *dev) 176cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 177cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_spi *spi = &ili->access.spi; 178cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 179cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->write = ili9320_write_spi; 180cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->dev = dev; 181cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 182cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks /* fill the two messages we are going to use to send the data 183cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * with, the first the address followed by the data. The datasheet 184cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks * says they should be done as two distinct cycles of the SPI CS line. 185cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks */ 186cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 187cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[0].tx_buf = spi->buffer_addr; 188cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[1].tx_buf = spi->buffer_data; 189cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[0].len = 3; 190cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[1].len = 3; 191cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[0].bits_per_word = 8; 192cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[1].bits_per_word = 8; 193cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi->xfer[0].cs_change = 1; 194cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 195cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi_message_init(&spi->message); 196cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi_message_add_tail(&spi->xfer[0], &spi->message); 197cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks spi_message_add_tail(&spi->xfer[1], &spi->message); 198cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 199cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 200cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint __devinit ili9320_probe_spi(struct spi_device *spi, 201cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_client *client) 202cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 203cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320_platdata *cfg = spi->dev.platform_data; 204cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct device *dev = &spi->dev; 205cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct ili9320 *ili; 206cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks struct lcd_device *lcd; 207cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int ret = 0; 208cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 209cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks /* verify we where given some information */ 210cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 211cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (cfg == NULL) { 212cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(dev, "no platform data supplied\n"); 213cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return -EINVAL; 214cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 215cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 216cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (cfg->hsize <= 0 || cfg->vsize <= 0 || cfg->reset == NULL) { 217cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(dev, "invalid platform data supplied\n"); 218cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return -EINVAL; 219cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 220cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 221cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks /* allocate and initialse our state */ 222cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 223cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili = kzalloc(sizeof(struct ili9320), GFP_KERNEL); 224cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (ili == NULL) { 225cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(dev, "no memory for device\n"); 226cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return -ENOMEM; 227cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 228cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 229cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->access.spi.id = ILI9320_SPI_IDCODE | ILI9320_SPI_ID(1); 230cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 231cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->dev = dev; 232cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->client = client; 233cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->power = FB_BLANK_POWERDOWN; 234cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->platdata = cfg; 235cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 236cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_set_drvdata(&spi->dev, ili); 237cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 238cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_setup_spi(ili, spi); 239cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 240cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd = lcd_device_register("ili9320", dev, ili, &ili9320_ops); 241cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (IS_ERR(lcd)) { 242cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(dev, "failed to register lcd device\n"); 243cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = PTR_ERR(lcd); 244cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks goto err_free; 245cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 246cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 247cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili->lcd = lcd; 248cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 249cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_info(dev, "initialising %s\n", client->name); 250cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 251cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = ili9320_power(ili, FB_BLANK_UNBLANK); 252cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (ret != 0) { 253cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_err(dev, "failed to set lcd power state\n"); 254cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks goto err_unregister; 255cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 256cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 257cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 258cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 259cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks err_unregister: 260cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd_device_unregister(lcd); 261cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 262cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks err_free: 263cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks kfree(ili); 264cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 265cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ret; 266cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 267cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 268cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_probe_spi); 269cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 270cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint __devexit ili9320_remove(struct ili9320 *ili) 271cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 272cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_power(ili, FB_BLANK_POWERDOWN); 273cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 274cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd_device_unregister(ili->lcd); 275cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks kfree(ili); 276cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 277cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 278cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 279cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 280cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_remove); 281cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 282cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#ifdef CONFIG_PM 283cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint ili9320_suspend(struct ili9320 *lcd, pm_message_t state) 284cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 285cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks int ret; 286cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 287cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_dbg(lcd->dev, "%s: event %d\n", __func__, state.event); 288cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 289cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (state.event == PM_EVENT_SUSPEND) { 290cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ret = ili9320_power(lcd, FB_BLANK_POWERDOWN); 291cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 292cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) { 293cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_write(lcd, ILI9320_POWER1, lcd->power1 | 294cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ILI9320_POWER1_SLP | 295cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ILI9320_POWER1_DSTB); 296cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks lcd->initialised = 0; 297cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 298cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 299cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ret; 300cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 301cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 302cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return 0; 303cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 304cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 305cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_suspend); 306cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 307cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksint ili9320_resume(struct ili9320 *lcd) 308cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 309cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks dev_info(lcd->dev, "resuming from power state %d\n", lcd->power); 310cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 311cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) { 312cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_write(lcd, ILI9320_POWER1, 0x00); 313cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks } 314cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 315cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks return ili9320_power(lcd, FB_BLANK_UNBLANK); 316cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 317cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 318cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_resume); 319cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks#endif 320cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 321cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks/* Power down all displays on reboot, poweroff or halt */ 322cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooksvoid ili9320_shutdown(struct ili9320 *lcd) 323cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks{ 324cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks ili9320_power(lcd, FB_BLANK_POWERDOWN); 325cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks} 326cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 327cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksEXPORT_SYMBOL_GPL(ili9320_shutdown); 328cccb6d3c149603b9c15d3c460dff317455df1766Ben Dooks 329cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksMODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>"); 330cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksMODULE_DESCRIPTION("ILI9320 LCD Driver"); 331cccb6d3c149603b9c15d3c460dff317455df1766Ben DooksMODULE_LICENSE("GPL v2"); 332