Commit 9f26e659 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
Browse files

sh: kfr2r09 board support - LCDC panel 



This patch adds support for the WQVGA LCD display used by
the KFR2R09 board. The LCD module is a TX07D34VM0AAA made
by Hitachi, and this module is made up by a R61517 chip
together with a 240x400 pixel display. The screen is
attached to the SuperH Mobile LCDC using a 18-bit SYS bus.

The register settings used by the SYS panel setup code are
based on an out-of-tree driver which apart from duplicating
all LCDC driver code and writing to non-existing hardware
registers also never was posted for upstream merge.

Signed-off-by: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent ec56b66f

arch/sh/boards/mach-kfr2r09/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-y	 := setup.o

obj-$(CONFIG_FB_SH_MOBILE_LCDC)	+=  lcd_wqvga.o

arch/sh/boards/mach-kfr2r09/lcd_wqvga.c

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+332 −0
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/*

 * KFR2R09 LCD panel support

 *

 * Copyright (C) 2009 Magnus Damm

 *

 * Register settings based on the out-of-tree t33fb.c driver

 * Copyright (C) 2008 Lineo Solutions, Inc.

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License. See the file COPYING in the main directory of this archive for

 * more details.

 */



#include <linux/delay.h>

#include <linux/err.h>

#include <linux/fb.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/gpio.h>

#include <video/sh_mobile_lcdc.h>

#include <mach/kfr2r09.h>

#include <cpu/sh7724.h>



/* The on-board LCD module is a Hitachi TX07D34VM0AAA. This module is made

 * up of a 240x400 LCD hooked up to a R61517 driver IC. The driver IC is

 * communicating with the main port of the LCDC using an 18-bit SYS interface.

 *

 * The device code for this LCD module is 0x01221517.

 */



static const unsigned char data_frame_if[] = {

	0x02, /* WEMODE: 1=cont, 0=one-shot */

	0x00, 0x00,

	0x00, /* EPF, DFM */

	0x02, /* RIM[1] : 1 (18bpp) */

};



static const unsigned char data_panel[] = {

	0x0b,

	0x63, /* 400 lines */

	0x04, 0x00, 0x00, 0x04, 0x11, 0x00, 0x00,

};



static const unsigned char data_timing[] = {

	0x00, 0x00, 0x13, 0x08, 0x08,

};



static const unsigned char data_timing_src[] = {

	0x11, 0x01, 0x00, 0x01,

};



static const unsigned char data_gamma[] = {

	0x01, 0x02, 0x08, 0x23,	0x03, 0x0c, 0x00, 0x06,	0x00, 0x00,

	0x01, 0x00, 0x0c, 0x23, 0x03, 0x08, 0x02, 0x06, 0x00, 0x00,

};



static const unsigned char data_power[] = {

	0x07, 0xc5, 0xdc, 0x02,	0x33, 0x0a,

};



static unsigned long read_reg(void *sohandle,

			      struct sh_mobile_lcdc_sys_bus_ops *so)

{

	return so->read_data(sohandle);

}



static void write_reg(void *sohandle,

		      struct sh_mobile_lcdc_sys_bus_ops *so,

		      int i, unsigned long v)

{

	if (i)

		so->write_data(sohandle, v); /* PTH4/LCDRS High [param, 17:0] */

	else

		so->write_index(sohandle, v); /* PTH4/LCDRS Low [cmd, 7:0] */

}



static void write_data(void *sohandle,

		       struct sh_mobile_lcdc_sys_bus_ops *so,

		       unsigned char const *data, int no_data)

{

	int i;



	for (i = 0; i < no_data; i++)

		write_reg(sohandle, so, 1, data[i]);

}



static unsigned long read_device_code(void *sohandle,

				      struct sh_mobile_lcdc_sys_bus_ops *so)

{

	unsigned long device_code;



	/* access protect OFF */

	write_reg(sohandle, so, 0, 0xb0);

	write_reg(sohandle, so, 1, 0x00);



	/* deep standby OFF */

	write_reg(sohandle, so, 0, 0xb1);

	write_reg(sohandle, so, 1, 0x00);



	/* device code command */

	write_reg(sohandle, so, 0, 0xbf);

	mdelay(50);



	/* dummy read */

	read_reg(sohandle, so);



	/* read device code */

	device_code = ((read_reg(sohandle, so) & 0xff) << 24);

	device_code |= ((read_reg(sohandle, so) & 0xff) << 16);

	device_code |= ((read_reg(sohandle, so) & 0xff) << 8);

	device_code |= (read_reg(sohandle, so) & 0xff);



	return device_code;

}



static void write_memory_start(void *sohandle,

			       struct sh_mobile_lcdc_sys_bus_ops *so)

{

	write_reg(sohandle, so, 0, 0x2c);

}



static void clear_memory(void *sohandle,

			 struct sh_mobile_lcdc_sys_bus_ops *so)

{

	int i;



	/* write start */

	write_memory_start(sohandle, so);



	/* paint it black */

	for (i = 0; i < (240 * 400); i++)

		write_reg(sohandle, so, 1, 0x00);

}



static void display_on(void *sohandle,

		       struct sh_mobile_lcdc_sys_bus_ops *so)

{

	/* access protect off */

	write_reg(sohandle, so, 0, 0xb0);

	write_reg(sohandle, so, 1, 0x00);



	/* exit deep standby mode */

	write_reg(sohandle, so, 0, 0xb1);

	write_reg(sohandle, so, 1, 0x00);



	/* frame memory I/F */

	write_reg(sohandle, so, 0, 0xb3);

	write_data(sohandle, so, data_frame_if, ARRAY_SIZE(data_frame_if));



	/* display mode and frame memory write mode */

	write_reg(sohandle, so, 0, 0xb4);

	write_reg(sohandle, so, 1, 0x00); /* DBI, internal clock */



	/* panel */

	write_reg(sohandle, so, 0, 0xc0);

	write_data(sohandle, so, data_panel, ARRAY_SIZE(data_panel));



	/* timing (normal) */

	write_reg(sohandle, so, 0, 0xc1);

	write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));



	/* timing (partial) */

	write_reg(sohandle, so, 0, 0xc2);

	write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));



	/* timing (idle) */

	write_reg(sohandle, so, 0, 0xc3);

	write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));



	/* timing (source/VCOM/gate driving) */

	write_reg(sohandle, so, 0, 0xc4);

	write_data(sohandle, so, data_timing_src, ARRAY_SIZE(data_timing_src));



	/* gamma (red) */

	write_reg(sohandle, so, 0, 0xc8);

	write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));



	/* gamma (green) */

	write_reg(sohandle, so, 0, 0xc9);

	write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));



	/* gamma (blue) */

	write_reg(sohandle, so, 0, 0xca);

	write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));



	/* power (common) */

	write_reg(sohandle, so, 0, 0xd0);

	write_data(sohandle, so, data_power, ARRAY_SIZE(data_power));



	/* VCOM */

	write_reg(sohandle, so, 0, 0xd1);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x0f);

	write_reg(sohandle, so, 1, 0x02);



	/* power (normal) */

	write_reg(sohandle, so, 0, 0xd2);

	write_reg(sohandle, so, 1, 0x63);

	write_reg(sohandle, so, 1, 0x24);



	/* power (partial) */

	write_reg(sohandle, so, 0, 0xd3);

	write_reg(sohandle, so, 1, 0x63);

	write_reg(sohandle, so, 1, 0x24);



	/* power (idle) */

	write_reg(sohandle, so, 0, 0xd4);

	write_reg(sohandle, so, 1, 0x63);

	write_reg(sohandle, so, 1, 0x24);



	write_reg(sohandle, so, 0, 0xd8);

	write_reg(sohandle, so, 1, 0x77);

	write_reg(sohandle, so, 1, 0x77);



	/* TE signal */

	write_reg(sohandle, so, 0, 0x35);

	write_reg(sohandle, so, 1, 0x00);



	/* TE signal line */

	write_reg(sohandle, so, 0, 0x44);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x00);



	/* column address */

	write_reg(sohandle, so, 0, 0x2a);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0xef);



	/* page address */

	write_reg(sohandle, so, 0, 0x2b);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x00);

	write_reg(sohandle, so, 1, 0x01);

	write_reg(sohandle, so, 1, 0x8f);



	/* exit sleep mode */

	write_reg(sohandle, so, 0, 0x11);



	mdelay(120);



	/* clear vram */

	clear_memory(sohandle, so);



	/* display ON */

	write_reg(sohandle, so, 0, 0x29);

	mdelay(1);



	write_memory_start(sohandle, so);

}



int kfr2r09_lcd_setup(void *board_data, void *sohandle,

		      struct sh_mobile_lcdc_sys_bus_ops *so)

{

	/* power on */

	gpio_set_value(GPIO_PTF4, 0);  /* PROTECT/ -> L */

	gpio_set_value(GPIO_PTE4, 0);  /* LCD_RST/ -> L */

	gpio_set_value(GPIO_PTF4, 1);  /* PROTECT/ -> H */

	udelay(1100);

	gpio_set_value(GPIO_PTE4, 1);  /* LCD_RST/ -> H */

	udelay(10);

	gpio_set_value(GPIO_PTF4, 0);  /* PROTECT/ -> L */

	mdelay(20);



	if (read_device_code(sohandle, so) != 0x01221517)

		return -ENODEV;



	pr_info("KFR2R09 WQVGA LCD Module detected.\n");



	display_on(sohandle, so);

	return 0;

}



#define CTRL_CKSW       0x10

#define CTRL_C10        0x20

#define CTRL_CPSW       0x80

#define MAIN_MLED4      0x40

#define MAIN_MSW        0x80



static int kfr2r09_lcd_backlight(int on)

{

	struct i2c_adapter *a;

	struct i2c_msg msg;

	unsigned char buf[2];

	int ret;



	a = i2c_get_adapter(0);

	if (!a)

		return -ENODEV;



	buf[0] = 0x00;

	if (on)

		buf[1] = CTRL_CPSW | CTRL_C10 | CTRL_CKSW;

	else

		buf[1] = 0;



	msg.addr = 0x75;

	msg.buf = buf;

	msg.len = 2;

	msg.flags = 0;

	ret = i2c_transfer(a, &msg, 1);

	if (ret != 1)

		return -ENODEV;



	buf[0] = 0x01;

	if (on)

		buf[1] = MAIN_MSW | MAIN_MLED4 | 0x0c;

	else

		buf[1] = 0;



	msg.addr = 0x75;

	msg.buf = buf;

	msg.len = 2;

	msg.flags = 0;

	ret = i2c_transfer(a, &msg, 1);

	if (ret != 1)

		return -ENODEV;



	return 0;

}



void kfr2r09_lcd_on(void *board_data)

{

	kfr2r09_lcd_backlight(1);

}



void kfr2r09_lcd_off(void *board_data)

{

	kfr2r09_lcd_backlight(0);

}

arch/sh/boards/mach-kfr2r09/setup.c

+94 −0
Original line number Diff line number Diff line
@@ -15,11 +15,13 @@ 
#include <linux/clk.h>

#include <linux/gpio.h>

#include <linux/input.h>

#include <video/sh_mobile_lcdc.h>

#include <asm/clock.h>

#include <asm/machvec.h>

#include <asm/io.h>

#include <asm/sh_keysc.h>

#include <cpu/sh7724.h>

#include <mach/kfr2r09.h>



static struct mtd_partition kfr2r09_nor_flash_partitions[] =

{
@@ -97,9 +99,70 @@ static struct platform_device kfr2r09_sh_keysc_device = { 
	},

};



static struct sh_mobile_lcdc_info kfr2r09_sh_lcdc_info = {

	.clock_source = LCDC_CLK_BUS,

	.ch[0] = {

		.chan = LCDC_CHAN_MAINLCD,

		.bpp = 16,

		.interface_type = SYS18,

		.clock_divider = 6,

		.flags = LCDC_FLAGS_DWPOL,

		.lcd_cfg = {

			.name = "TX07D34VM0AAA",

			.xres = 240,

			.yres = 400,

			.left_margin = 0,

			.right_margin = 16,

			.hsync_len = 8,

			.upper_margin = 0,

			.lower_margin = 1,

			.vsync_len = 1,

			.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

		},

		.lcd_size_cfg = {

			.width = 35,

			.height = 58,

		},

		.board_cfg = {

			.setup_sys = kfr2r09_lcd_setup,

			.display_on = kfr2r09_lcd_on,

			.display_off = kfr2r09_lcd_off,

		},

		.sys_bus_cfg = {

			.ldmt2r = 0x07010904,

			.ldmt3r = 0x14012914,

			/* set 1s delay to encourage fsync() */

			.deferred_io_msec = 1000,

		},

	}

};



static struct resource kfr2r09_sh_lcdc_resources[] = {

	[0] = {

		.name	= "LCDC",

		.start	= 0xfe940000, /* P4-only space */

		.end	= 0xfe941fff,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= 106,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device kfr2r09_sh_lcdc_device = {

	.name		= "sh_mobile_lcdc_fb",

	.num_resources	= ARRAY_SIZE(kfr2r09_sh_lcdc_resources),

	.resource	= kfr2r09_sh_lcdc_resources,

	.dev	= {

		.platform_data	= &kfr2r09_sh_lcdc_info,

	},

};



static struct platform_device *kfr2r09_devices[] __initdata = {

	&kfr2r09_nor_flash_device,

	&kfr2r09_sh_keysc_device,

	&kfr2r09_sh_lcdc_device,

};



#define BSC_CS0BCR 0xfec10004
@@ -128,6 +191,37 @@ static int __init kfr2r09_devices_setup(void) 
	gpio_request(GPIO_FN_KEYIN4, NULL);

	gpio_request(GPIO_FN_KEYOUT5_IN5, NULL);



	/* setup LCDC pins for SYS panel */

	gpio_request(GPIO_FN_LCDD17, NULL);

	gpio_request(GPIO_FN_LCDD16, NULL);

	gpio_request(GPIO_FN_LCDD15, NULL);

	gpio_request(GPIO_FN_LCDD14, NULL);

	gpio_request(GPIO_FN_LCDD13, NULL);

	gpio_request(GPIO_FN_LCDD12, NULL);

	gpio_request(GPIO_FN_LCDD11, NULL);

	gpio_request(GPIO_FN_LCDD10, NULL);

	gpio_request(GPIO_FN_LCDD9, NULL);

	gpio_request(GPIO_FN_LCDD8, NULL);

	gpio_request(GPIO_FN_LCDD7, NULL);

	gpio_request(GPIO_FN_LCDD6, NULL);

	gpio_request(GPIO_FN_LCDD5, NULL);

	gpio_request(GPIO_FN_LCDD4, NULL);

	gpio_request(GPIO_FN_LCDD3, NULL);

	gpio_request(GPIO_FN_LCDD2, NULL);

	gpio_request(GPIO_FN_LCDD1, NULL);

	gpio_request(GPIO_FN_LCDD0, NULL);

	gpio_request(GPIO_FN_LCDRS, NULL); /* LCD_RS */

	gpio_request(GPIO_FN_LCDCS, NULL); /* LCD_CS/ */

	gpio_request(GPIO_FN_LCDRD, NULL); /* LCD_RD/ */

	gpio_request(GPIO_FN_LCDWR, NULL); /* LCD_WR/ */

	gpio_request(GPIO_FN_LCDVSYN, NULL); /* LCD_VSYNC */

	gpio_request(GPIO_PTE4, NULL); /* LCD_RST/ */

	gpio_direction_output(GPIO_PTE4, 1);

	gpio_request(GPIO_PTF4, NULL); /* PROTECT/ */

	gpio_direction_output(GPIO_PTF4, 1);

	gpio_request(GPIO_PTU0, NULL); /* LEDSTDBY/ */

	gpio_direction_output(GPIO_PTU0, 1);



	return platform_add_devices(kfr2r09_devices,

				    ARRAY_SIZE(kfr2r09_devices));

}

arch/sh/include/mach-kfr2r09/mach/kfr2r09.h

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+21 −0
Original line number Diff line number Diff line 
#ifndef __ASM_SH_KFR2R09_H

#define __ASM_SH_KFR2R09_H



#include <video/sh_mobile_lcdc.h>



#ifdef CONFIG_FB_SH_MOBILE_LCDC

void kfr2r09_lcd_on(void *board_data);

void kfr2r09_lcd_off(void *board_data);

int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,

		      struct sh_mobile_lcdc_sys_bus_ops *sys_ops);

#else

static inline void kfr2r09_lcd_on(void *board_data) {}

static inline void kfr2r09_lcd_off(void *board_data) {}

static inline int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,

				    struct sh_mobile_lcdc_sys_bus_ops *sys_ops)

{

	return -ENODEV;

}

#endif



#endif /* __ASM_SH_KFR2R09_H */

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