/* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <linux/delay.h>
#ifdef CONFIG_ARCH_MSM7X30
#include <linux/mfd/pmic8058.h>
#endif
#include <mach/gpio.h>
#include "msm_fb.h"
static int lcdc_sharp_panel_off(struct platform_device *pdev);
static int spi_cs;
static int spi_sclk;
static int spi_mosi;
static int spi_miso;
static unsigned char bit_shift[8] = { (1 << 7), /* MSB */
(1 << 6),
(1 << 5),
(1 << 4),
(1 << 3),
(1 << 2),
(1 << 1),
(1 << 0) /* LSB */
};
struct sharp_state_type {
boolean disp_initialized;
boolean display_on;
boolean disp_powered_up;
};
struct sharp_spi_data {
u8 addr;
u8 data;
};
static struct sharp_spi_data init_sequence[] = {
{ 15, 0x01 },
{ 5, 0x01 },
{ 7, 0x10 },
{ 9, 0x1E },
{ 10, 0x04 },
{ 17, 0xFF },
{ 21, 0x8A },
{ 22, 0x00 },
{ 23, 0x82 },
{ 24, 0x24 },
{ 25, 0x22 },
{ 26, 0x6D },
{ 27, 0xEB },
{ 28, 0xB9 },
{ 29, 0x3A },
{ 49, 0x1A },
{ 50, 0x16 },
{ 51, 0x05 },
{ 55, 0x7F },
{ 56, 0x15 },
{ 57, 0x7B },
{ 60, 0x05 },
{ 61, 0x0C },
{ 62, 0x80 },
{ 63, 0x00 },
{ 92, 0x90 },
{ 97, 0x01 },
{ 98, 0xFF },
{ 113, 0x11 },
{ 114, 0x02 },
{ 115, 0x08 },
{ 123, 0xAB },
{ 124, 0x04 },
{ 6, 0x02 },
{ 133, 0x00 },
{ 134, 0xFE },
{ 135, 0x22 },
{ 136, 0x0B },
{ 137, 0xFF },
{ 138, 0x0F },
{ 139, 0x00 },
{ 140, 0xFE },
{ 141, 0x22 },
{ 142, 0x0B },
{ 143, 0xFF },
{ 144, 0x0F },
{ 145, 0x00 },
{ 146, 0xFE },
{ 147, 0x22 },
{ 148, 0x0B },
{ 149, 0xFF },
{ 150, 0x0F },
{ 202, 0x30 },
{ 30, 0x01 },
{ 4, 0x01 },
{ 31, 0x41 },
};
static struct sharp_state_type sharp_state = { 0 };
static struct msm_panel_common_pdata *lcdc_sharp_pdata;
static void sharp_spi_write_byte(u8 val)
{
int i;
/* Clock should be Low before entering */
for (i = 0; i < 8; i++) {
/* #1: Drive the Data (High or Low) */
if (val & bit_shift[i])
gpio_set_value(spi_mosi, 1);
else
gpio_set_value(spi_mosi, 0);
/* #2: Drive the Clk High and then Low */
gpio_set_value(spi_sclk, 1);
gpio_set_value(spi_sclk, 0);
}
}
static void serigo(u8 reg, u8 data)
{
/* Enable the Chip Select - low */
gpio_set_value(spi_cs, 0);
udelay(1);
/* Transmit register address first, then data */
sharp_spi_write_byte(reg);
/* Idle state of MOSI is Low */
gpio_set_value(spi_mosi, 0);
udelay(1);
sharp_spi_write_byte(data);
gpio_set_value(spi_mosi, 0);
gpio_set_value(spi_cs, 1);
}
static void sharp_spi_init(void)
{
spi_sclk = *(lcdc_sharp_pdata->gpio_num);
spi_cs = *(lcdc_sharp_pdata->gpio_num + 1);
spi_mosi = *(lcdc_sharp_pdata->gpio_num + 2);
spi_miso = *(lcdc_sharp_pdata->gpio_num + 3);
/* Set the output so that we don't disturb the slave device */
gpio_set_value(spi_sclk, 0);
gpio_set_value(spi_mosi, 0);
/* Set the Chip Select deasserted (active low) */
gpio_set_value(spi_cs, 1);
}
static void sharp_disp_powerup(void)
{
if (!sharp_state.disp_powered_up && !sharp_state.display_on)
sharp_state.disp_powered_up = TRUE;
}
static void sharp_disp_on(void)
{
int i;
if (sharp_state.disp_powered_up && !sharp_state.display_on) {
for (i = 0; i < ARRAY_SIZE(init_sequence); i++) {
serigo(init_sequence[i].addr,
init_sequence[i].data);
}
mdelay(10);
serigo(31, 0xC1);
mdelay(10);
serigo(31, 0xD9);
serigo(31, 0xDF);
sharp_state.display_on = TRUE;
}
}
static int lcdc_sharp_panel_on(struct platform_device *pdev)
{
if (!sharp_state.disp_initialized) {
lcdc_sharp_pdata->panel_config_gpio(1);
sharp_spi_init();
sharp_disp_powerup();
sharp_disp_on();
sharp_state.disp_initialized = TRUE;
}
return 0;
}
static int lcdc_sharp_panel_off(struct platform_device *pdev)
{
if (sharp_state.disp_powered_up && sharp_state.display_on) {
serigo(4, 0x00);
mdelay(40);
serigo(31, 0xC1);
mdelay(40);
serigo(31, 0x00);
mdelay(100);
sharp_state.display_on = FALSE;
sharp_state.disp_initialized = FALSE;
}
return 0;
}
static int __init sharp_probe(struct platform_device *pdev)
{
if (pdev->id == 0) {
lcdc_sharp_pdata = pdev->dev.platform_data;
return 0;
}
msm_fb_add_device(pdev);
return 0;
}
static struct platform_driver this_driver = {
.probe = sharp_probe,
.driver = {
.name = "lcdc_sharp_wvga",
},
};
static struct msm_fb_panel_data sharp_panel_data = {
.on = lcdc_sharp_panel_on,
.off = lcdc_sharp_panel_off,
};
static struct platform_device this_device = {
.name = "lcdc_sharp_wvga",
.id = 1,
.dev = {
.platform_data = &sharp_panel_data,
}
};
static int __init lcdc_sharp_panel_init(void)
{
int ret;
struct msm_panel_info *pinfo;
#ifdef CONFIG_FB_MSM_MDDI_AUTO_DETECT
if (msm_fb_detect_client("lcdc_sharp_wvga_pt"))
return 0;
#endif
ret = platform_driver_register(&this_driver);
if (ret)
return ret;
pinfo = &sharp_panel_data.panel_info;
pinfo->xres = 480;
pinfo->yres = 800;
pinfo->type = LCDC_PANEL;
pinfo->pdest = DISPLAY_1;
pinfo->wait_cycle = 0;
pinfo->bpp = 18;
pinfo->fb_num = 2;
pinfo->clk_rate = 24500000;
pinfo->bl_max = 4;
pinfo->bl_min = 1;
pinfo->lcdc.h_back_porch = 20;
pinfo->lcdc.h_front_porch = 10;
pinfo->lcdc.h_pulse_width = 10;
pinfo->lcdc.v_back_porch = 2;
pinfo->lcdc.v_front_porch = 2;
pinfo->lcdc.v_pulse_width = 2;
pinfo->lcdc.border_clr = 0;
pinfo->lcdc.underflow_clr = 0xff;
pinfo->lcdc.hsync_skew = 0;
ret = platform_device_register(&this_device);
if (ret)
platform_driver_unregister(&this_driver);
return ret;
}
module_init(lcdc_sharp_panel_init);
