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/*
* Copyright (c) 2011, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of The Linux Foundation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <debug.h>
#include <dev/gpio.h>
#include <kernel/thread.h>
#include "gpio_hw.h"
#include "panel.h"
#include <dev/lcdc.h>
#define VEE_RESET 20
#define LCD_RESET 180
#define GPIO26_GPIO_CNTRL 0x169 /* backlight */
struct sharp_spi_data {
unsigned addr;
unsigned 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 unsigned char bit_shift[8] = { (1 << 7), /* MSB */
(1 << 6),
(1 << 5),
(1 << 4),
(1 << 3),
(1 << 2),
(1 << 1),
(1 << 0) /* LSB */
};
static unsigned vee_reset_gpio =
GPIO_CFG(VEE_RESET, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA);
static unsigned lcd_reset_gpio =
GPIO_CFG(LCD_RESET, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA);
static int sharp_display_common_power(int on)
{
int rc = 0, flag_on = !!on;
static int display_common_power_save_on;
unsigned int vreg_ldo12, vreg_ldo15, vreg_ldo20, vreg_ldo16, vreg_ldo8;
if (display_common_power_save_on == flag_on)
return 0;
display_common_power_save_on = flag_on;
if (on) {
/* set LCD reset */
rc = gpio_tlmm_config(lcd_reset_gpio, GPIO_ENABLE);
if (rc) {
return rc;
}
gpio_set(LCD_RESET, 0); /* bring reset line low to hold reset */
/* set VEE reset */
rc = gpio_tlmm_config(vee_reset_gpio, GPIO_ENABLE);
if (rc) {
return rc;
}
gpio_set(VEE_RESET, 1);
gpio_set(VEE_RESET, 0); /* bring reset line low to hold reset */
mdelay(10);
}
/* Set LD008 to 1.8V - VEE (VCC, VDDIO, pullups) */
pmic_write(LDO08_CNTRL, 0x06 | LDO_LOCAL_EN_BMSK);
/* Set LD012 to 1.8V - display (VDDIO) */
pmic_write(LDO12_CNTRL, 0x06 | LDO_LOCAL_EN_BMSK);
/* Set LD015 to 3.0V - display (VCC), VEE (VLP) */
pmic_write(LDO15_CNTRL, 0x1E | LDO_LOCAL_EN_BMSK);
/* wait for power to stabilize */
mdelay(10);
gpio_config(VEE_RESET, 0); /*disable VEE_RESET, rely on pullups to bring it high */
mdelay(5);
gpio_set(LCD_RESET, 1); /* bring reset line high */
mdelay(10); /* 10 msec before IO can be accessed */
return rc;
}
static struct msm_gpio sharp_lcd_panel_gpios[] = {
{GPIO_CFG(45, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "spi_clk"},
{GPIO_CFG(46, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "spi_cs0"},
{GPIO_CFG(47, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "spi_mosi"},
{GPIO_CFG(48, 0, GPIO_INPUT, GPIO_NO_PULL, GPIO_2MA), "spi_miso"},
{GPIO_CFG(22, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu2"},
{GPIO_CFG(25, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_red2"},
{GPIO_CFG(90, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_pclk"},
{GPIO_CFG(91, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_en"},
{GPIO_CFG(92, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_vsync"},
{GPIO_CFG(93, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_hsync"},
{GPIO_CFG(94, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn2"},
{GPIO_CFG(95, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn3"},
{GPIO_CFG(96, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn4"},
{GPIO_CFG(97, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn5"},
{GPIO_CFG(98, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn6"},
{GPIO_CFG(99, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_grn7"},
{GPIO_CFG(100, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu3"},
{GPIO_CFG(101, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu4"},
{GPIO_CFG(102, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu5"},
{GPIO_CFG(103, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu6"},
{GPIO_CFG(104, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_blu7"},
{GPIO_CFG(105, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_red3"},
{GPIO_CFG(106, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_red4"},
{GPIO_CFG(107, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_red5"},
{GPIO_CFG(108, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA), "lcdc_red6"},
};
int sharp_lcdc_panel_power(int on)
{
int rc, i;
struct msm_gpio *gp;
rc = sharp_display_common_power(on);
if (rc < 0) {
return rc;
}
if (on) {
rc = platform_gpios_enable(sharp_lcd_panel_gpios,
ARRAY_SIZE(sharp_lcd_panel_gpios));
if (rc) {
return rc;
}
} else { /* off */
gp = sharp_lcd_panel_gpios;
for (i = 0; i < ARRAY_SIZE(sharp_lcd_panel_gpios); i++) {
/* ouput low */
gpio_set(GPIO_PIN(gp->gpio_cfg), 0);
gp++;
}
}
return rc;
}
static void sharp_spi_write_byte(unsigned 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(SPI_MOSI, 1);
else
gpio_set(SPI_MOSI, 0);
/* #2: Drive the Clk High and then Low */
gpio_set(SPI_SCLK, 1);
gpio_set(SPI_SCLK, 0);
}
}
static int serigo(unsigned reg, unsigned data)
{
/* Enable the Chip Select - low */
gpio_set(SPI_CS, 0);
udelay(1);
/* Transmit register address first, then data */
sharp_spi_write_byte(reg);
/* Idle state of MOSI is Low */
gpio_set(SPI_MOSI, 0);
udelay(1);
sharp_spi_write_byte(data);
gpio_set(SPI_MOSI, 0);
gpio_set(SPI_CS, 1);
return 0;
}
void sharp_lcdc_disp_on(void)
{
unsigned i;
gpio_set(SPI_CS, 1);
gpio_set(SPI_SCLK, 1);
gpio_set(SPI_MOSI, 0);
gpio_set(SPI_MISO, 0);
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);
}
void sharp_lcdc_on(void)
{
lcdc_clock_init(27648000);
sharp_lcdc_panel_power(1);
/*enable backlight, open up gpio, use default for LPG */
pmic_write(GPIO26_GPIO_CNTRL, 0x81); /* Write, Bank0, VIN0=VPH, Mode selection enabled */
pmic_write(GPIO26_GPIO_CNTRL, 0x99); /* Write, Bank1, OutOn/InOff, CMOS, Invert Output (GPIO High) */
pmic_write(GPIO26_GPIO_CNTRL, 0xAA); /* Write, Bank2, GPIO no pull */
pmic_write(GPIO26_GPIO_CNTRL, 0xB4); /* Write, Bank3, high drv strength */
pmic_write(GPIO26_GPIO_CNTRL, 0xC6); /* Write, Bank4, Src: Special Function 2 */
sharp_lcdc_disp_on();
}
static struct lcdc_timing_parameters param = {
.lcdc_fb_width = 480,
.lcdc_fb_height = 800,
.lcdc_hsync_pulse_width_dclk = 10,
.lcdc_hsync_back_porch_dclk = 20,
.lcdc_hsync_front_porch_dclk = 10,
.lcdc_hsync_skew_dclk = 0,
.lcdc_vsync_pulse_width_lines = 2,
.lcdc_vsync_back_porch_lines = 2,
.lcdc_vsync_front_porch_lines = 2,
};
struct lcdc_timing_parameters *sharp_timing_param()
{
return &param;
}