dirty fix to merging

1 files changed, 465 insertions, 0 deletions

diff --git a/drivers/video/wmt/devices/lcd-b079xan01.c b/drivers/video/wmt/devices/lcd-b079xan01.c
new file mode 100644
index 00000000..54e5921e
--- /dev/null
+++ b/drivers/video/wmt/devices/lcd-b079xan01.c
@@ -0,0 +1,465 @@
+/*++
+	linux/drivers/video/wmt/devices/lcd-b079xan01.c
+
+	Copyright (c) 2013  WonderMedia Technologies, Inc.
+
+	This program is free software: you can redistribute it and/or modify it under the
+	terms of the GNU General Public License as published by the Free Software Foundation,
+	either version 2 of the License, or (at your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but WITHOUT
+	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+	PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+	You should have received a copy of the GNU General Public License along with
+	this program.  If not, see <http://www.gnu.org/licenses/>.
+
+	WonderMedia Technologies, Inc.
+	10F, 529, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C.
+--*/
+
+#include <linux/delay.h>
+#include <linux/spi/spi.h>
+#include <mach/hardware.h>
+#include <mach/wmt-spi.h>
+#include <linux/gpio.h>
+#include <mach/wmt_iomux.h>
+#include "../lcd.h"
+
+#define DRIVERNAME	"ssd2828"
+#define DELAY_MASK	0xff000000
+
+#undef pr_err
+#undef pr_info
+#undef pr_warning
+#define pr_err(fmt, args...)		printk("[" DRIVERNAME "] " fmt, ##args)
+#define pr_info(fmt, args...)		printk("[" DRIVERNAME "] " fmt, ##args)
+#define pr_warning(fmt, args...)	printk("[" DRIVERNAME "] " fmt, ##args)
+
+extern void lcd_power_on(bool on);
+
+struct ssd2828_chip {
+	struct spi_device *spi;
+	int id;
+	int gpio_reset;
+};
+
+static int wmt_lcd_panel_id(void)
+{
+	char buf[96];
+	int len = sizeof(buf);
+	int type, id = 0;
+
+	if (wmt_getsyspara("wmt.display.param", buf, &len)) {
+		return -ENODEV;
+	}
+
+	sscanf(buf, "%d:%d", &type, &id);
+	return id;
+}
+
+// B079XAN01
+
+static const uint32_t b079xan01_init_sequence[] = {
+	0x7000B1, 0x723240,	//VSA=50, HAS=64
+	0x7000B2, 0x725078,	//VBP=30+50, HBP=56+64
+	0x7000B3, 0x72243C,	//VFP=36, HFP=60
+	0x7000B4, 0x720300,	//HACT=768
+	0x7000B5, 0x720400,	//VACT=1024
+	0x7000B6, 0x72000b,	//burst mode, 24bpp loosely packed
+	0x7000DE, 0x720003,	//no of lane=4
+	0x7000D6, 0x720005,	//RGB order and packet number in blanking period
+	0x7000B9, 0x720000,	//disable PLL
+
+	//lane speed=576 (24MHz * 24 = 576)
+	//may modify according to requirement, 500Mbps to 560Mbps
+	//LP clock : 576 / 9 / 8 = 8 MHz
+	0x7000BA, 0x728018,
+	0x7000BB, 0x720008,
+
+	0x7000B9, 0x720001,	//enable PPL
+	0x7000C4, 0x720001,	//enable BTA
+	0x7000B7, 0x720342,	//enter LP mode
+	0x7000B8, 0x720000,	//VC
+	0x7000BC, 0x720000,	//set packet size
+
+	0x700011,		//sleep out cmd
+	
+	DELAY_MASK + 200,
+
+	0x700029,		//display on
+	
+	DELAY_MASK + 200,
+
+	0x7000B7, 0x72030b,	//video mode on
+};
+
+static lcd_parm_t lcd_b079xan01_parm = {
+	.bits_per_pixel		= 24,
+	.capability		= 0,
+	.vmode = {
+		.name		= "B079XAN01",
+		.refresh	= 60,
+		.xres		= 768,
+		.yres		= 1024,
+		.pixclock	= KHZ2PICOS(64800),
+		.left_margin	= 56,
+		.right_margin	= 60,
+		.upper_margin	= 30,
+		.lower_margin	= 36,
+		.hsync_len	= 64,
+		.vsync_len	= 50,
+		.sync		= 0,
+		.vmode		= 0,
+		.flag		= 0,
+	},
+};
+
+static lcd_parm_t *lcd_b079xan01_get_parm(int arg)
+{
+	return &lcd_b079xan01_parm;
+}
+
+// BP080WX7
+
+static const uint32_t bp080wx7_init_sequence[] = {
+	0x7000B1, 0x720202,	// VSA=02 , HSA=02
+	0x7000B2, 0x720828,	// VBP+VSA=8, HBP+HSA=40
+	0x7000B3, 0x72040A,	// VFP=04 , HFP=10
+	0x7000B4, 0x720500,	// HACT=1280
+	0x7000B5, 0x720320,	// vACT=800
+	0x7000B6, 0x720007,	// Non burst mode with sync event  24bpp
+
+	//DELAY_MASK + 10,
+
+	0x7000DE, 0x720003,	// 4lanes
+	0x7000D6, 0x720005,	// BGR
+	0x7000B9, 0x720000,	
+
+	//DELAY_MASK + 10,
+
+	0x7000BA, 0x72C012,	// PLL=24*16 = 384MHz
+	0x7000BB, 0x720008,	// LP CLK=8.3MHz
+	0x7000B9, 0x720001,	
+
+	//DELAY_MASK + 200,	
+
+	0x7000B8, 0x720000,	// Virtual Channel 0
+	0x7000B7, 0x720342,	// LP Mode 
+
+	//DELAY_MASK + 10,
+
+	0x7000BC, 0x720000,
+	0x700011,		//sleep out
+
+	DELAY_MASK + 200,
+
+	0x7000BC, 0x720000,
+	0x700029,		//display on
+
+	//DELAY_MASK + 50,
+
+	0x7000B7, 0x72034B,	//Video Mode
+
+	DELAY_MASK + 200,
+
+	0x7000BC, 0x720000,
+	0x700029, //display on
+};
+
+//Timing parameter for 3.0" QVGA LCD
+#define VBPD 		(6)
+#define VFPD 		(4)
+#define VSPW 		(2)
+
+#define HBPD 		(38)
+#define HFPD 		(10)
+#define HSPW 		(2)
+
+// setenv wmt.display.tmr 64800:0:8:47:1280:45:4:16:800:16
+
+static lcd_parm_t lcd_bp080wx7_parm = {
+	.bits_per_pixel		= 24,
+	.capability		= 0,
+	.vmode = {
+		.name		= "BP080WX7",
+		.refresh	= 60,
+		.xres		= 1280,
+		.yres		= 800,
+		.pixclock	= KHZ2PICOS(64800),
+		.left_margin	= HBPD,
+		.right_margin	= HFPD,
+		.upper_margin	= VBPD,
+		.lower_margin	= VFPD,
+		.hsync_len	= HSPW,
+		.vsync_len	= VSPW,
+		.sync		= 0,
+		.vmode		= 0,
+		.flag		= 0,
+	},
+};
+
+static lcd_parm_t *lcd_bp080wx7_get_parm(int arg)
+{
+	return &lcd_bp080wx7_parm;
+}
+
+// SSD2828 api
+static int ssd2828_read(struct spi_device *spi, uint8_t reg)
+{
+	int ret;
+	uint8_t buf1[3] = { 0x70, 0x00, 0x00 };
+	uint8_t buf2[3] = { 0x73, 0x00, 0x00 };
+
+	buf1[2] = reg;
+
+	ret = spi_write(spi, buf1, 3);
+	if (ret) {
+		pr_err("spi_write ret=%d\n", ret);
+		return ret;
+	}
+
+	ret = spi_w8r16(spi, buf2[0]);
+	if (ret < 0) {
+		pr_err("spi_write ret=%d\n", ret);
+	}
+
+	return ret;
+}
+
+#if 0
+static int ssd2828_write(struct spi_device *spi, uint8_t reg, uint16_t data)
+{
+	int ret;
+	uint8_t buf_reg[3] = { 0x70, 0x00, 0x00 };
+	uint8_t buf_data[3] = { 0x72, 0x00, 0x00 };
+
+	buf_reg[2] = reg;
+
+	buf_data[1] = (data >> 8) & 0xff;
+	buf_data[2] = data & 0xff;
+
+	ret = spi_write(spi, buf_reg, 3);
+	if (ret) {
+		pr_err("spi_write ret=%d,w cmd=0x%06x\n", ret, data);
+		return ret;
+	}
+
+	ret = spi_write(spi, buf_data, 3);
+	if (ret)
+		pr_err("spi_write ret=%d,w cmd=0x%06x\n", ret, data);
+
+	return ret;
+}
+#endif
+
+static inline int spi_write_24bit(struct spi_device *spi, uint32_t data)
+{
+	int ret;
+	uint8_t buf[3];
+
+	buf[0] = (data >> 16) & 0xff;
+	buf[1] = (data >> 8) & 0xff;
+	buf[2] = data & 0xff;
+
+	ret = spi_write(spi, buf, 3);
+	if (ret)
+		pr_err("spi_write ret=%d,w cmd=0x%06x\n", ret, data);
+
+	return ret;
+}
+
+static inline void ssd2828_hw_reset(struct ssd2828_chip *chip)
+{
+	lcd_power_on(1);
+	msleep(10);
+
+	gpio_direction_output(chip->gpio_reset, 1);
+	msleep(10);
+	gpio_direction_output(chip->gpio_reset, 0);
+	msleep(200);
+	gpio_direction_output(chip->gpio_reset, 1);
+	msleep(200);
+}
+
+static int ssd2828_hw_init(struct ssd2828_chip *chip)
+{
+	const uint32_t *init_sequence;
+	size_t n;
+	int i, ret = 0;
+
+	ssd2828_hw_reset(chip);
+
+	ret = ssd2828_read(chip->spi, 0xB0);
+	if (ret < 0 || ret != 0x2828) {
+		pr_err("Error: SSD2828 not found!\n");
+		return -ENODEV;
+	}
+
+	switch (chip->id) {
+	case LCD_B079XAN01:
+		init_sequence = b079xan01_init_sequence;
+		n = ARRAY_SIZE(b079xan01_init_sequence);
+		break;
+	case LCD_BP080WX7:
+		init_sequence = bp080wx7_init_sequence;
+		n = ARRAY_SIZE(bp080wx7_init_sequence);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	for (i = 0; i < n; i++) {
+		if ((init_sequence[i] & DELAY_MASK) == DELAY_MASK) {
+			msleep(init_sequence[i] & 0xff);
+		} else {
+			ret = spi_write_24bit(chip->spi, init_sequence[i]);
+			if (ret)
+				break;
+		}
+	}
+
+	return ret;
+}
+
+static ssize_t option_port_testmode_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	char *s = buf;
+	int ret;
+	int reg;
+
+	struct spi_device *spi = container_of(dev, struct spi_device, dev);
+
+	s += sprintf(s, "register  value\n");
+
+	for (reg = 0xb0; reg <= 0xff; reg++) {
+		ret = ssd2828_read(spi, (uint8_t)reg);
+		if (ret < 0)
+			goto out;
+		s += sprintf(s, "reg 0x%02X : 0x%04x\n", reg, ret);
+	}
+
+	s += sprintf(s, "=========\n");
+
+out:
+	return (s - buf);
+}
+
+static ssize_t option_port_testmode_store(struct device *dev,
+					  struct device_attribute *attr,
+					  const char *buf, size_t count)
+{
+	return 0;
+}
+
+static DEVICE_ATTR(testmode, S_IRUGO,
+		   option_port_testmode_show,
+		   option_port_testmode_store);
+
+static int __devinit ssd2828_spi_probe(struct spi_device *spi)
+{
+	struct ssd2828_chip *chip;
+	int gpio = WMT_PIN_GP0_GPIO0;
+	int ret;
+
+	ret = gpio_request(gpio, "SSD2828 Reset");
+	if (ret) {
+		dev_err(&spi->dev, "can not open GPIO %d\n", gpio);
+		return ret;
+	}
+
+	ret = ssd2828_read(spi, 0xB0);
+	if (ret < 0 || ret != 0x2828) {
+		pr_err("Error: SSD2828 not found!\n");
+		return -ENODEV;
+	}
+
+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->spi = spi;
+	chip->id = wmt_lcd_panel_id();
+	chip->gpio_reset = gpio;
+	spi_set_drvdata(spi, chip);
+
+	ret = sysfs_create_file(&spi->dev.kobj, &dev_attr_testmode.attr);
+	if (unlikely(ret)) {
+		pr_err("ssd2828 sysfs_create_file failed\n");
+	}
+
+	return ret;
+}
+
+static int ssd2828_spi_resume(struct spi_device *spi)
+{
+	struct ssd2828_chip *chip = dev_get_drvdata(&spi->dev);
+	return ssd2828_hw_init(chip);
+}
+
+static struct spi_driver ssd2828_driver = {
+	.driver = {
+		.name = DRIVERNAME,
+		.owner = THIS_MODULE,
+	},
+	.probe = ssd2828_spi_probe,
+	.resume = ssd2828_spi_resume,
+};
+
+static struct spi_board_info ssd2828_spi_info[] __initdata = {
+	{
+		.modalias	= DRIVERNAME,
+		.bus_num	= 1,
+		.chip_select	= 0,
+		.max_speed_hz	= 12000000,
+		.irq		= -1,
+		.mode		= SPI_CLK_MODE3,
+	},
+};
+
+static int __init ssd2828_init(void)
+{
+	int ret;
+
+	switch (wmt_lcd_panel_id()) {
+	case LCD_B079XAN01:
+	case LCD_BP080WX7:
+		break;
+	default:
+		pr_warning("lcd for ssd2828 not found\n");
+		return -EINVAL;
+	}
+
+	ret = spi_register_board_info(ssd2828_spi_info,
+				      ARRAY_SIZE(ssd2828_spi_info));
+	if (ret) {
+		pr_err("spi_register_board_info failed\n");
+		return ret;
+	}
+
+	ret = spi_register_driver(&ssd2828_driver);
+	if (ret) {
+		pr_err("spi_register_driver failed\n");
+		return ret;
+	}
+
+	lcd_panel_register(LCD_B079XAN01, (void *)lcd_b079xan01_get_parm);
+	lcd_panel_register(LCD_BP080WX7,  (void *)lcd_bp080wx7_get_parm);
+
+	pr_info("spi %s register success\n", DRIVERNAME);
+	return 0;
+}
+
+static void ssd2828_exit(void)
+{
+	spi_unregister_driver(&ssd2828_driver);
+}
+
+module_init(ssd2828_init);
+module_exit(ssd2828_exit);
+
+MODULE_AUTHOR("Sam Mei");
+MODULE_DESCRIPTION("WonderMedia Mipi LCD Driver");
+MODULE_LICENSE("GPL");
+