| /* Copyright (c) 2009-2010, The Linux Foundation. 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. |
| * |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #ifdef CONFIG_SPI_QSD |
| #include <linux/spi/spi.h> |
| #endif |
| #include <mach/gpio.h> |
| #include <mach/pmic.h> |
| #include "msm_fb.h" |
| |
| #ifdef CONFIG_FB_MSM_TRY_MDDI_CATCH_LCDC_PRISM |
| #include "mddihosti.h" |
| #endif |
| |
| #ifdef CONFIG_SPI_QSD |
| #define LCDC_TOSHIBA_SPI_DEVICE_NAME "lcdc_toshiba_ltm030dd40" |
| static struct spi_device *lcdc_toshiba_spi_client; |
| #else |
| static int spi_cs; |
| static int spi_sclk; |
| static int spi_mosi; |
| static int spi_miso; |
| #endif |
| struct toshiba_state_type{ |
| boolean disp_initialized; |
| boolean display_on; |
| boolean disp_powered_up; |
| }; |
| |
| static struct toshiba_state_type toshiba_state = { 0 }; |
| static struct msm_panel_common_pdata *lcdc_toshiba_pdata; |
| |
| #ifndef CONFIG_SPI_QSD |
| static void toshiba_spi_write_byte(char dc, uint8 data) |
| { |
| uint32 bit; |
| int bnum; |
| |
| gpio_set_value(spi_sclk, 0); /* clk low */ |
| /* dc: 0 for command, 1 for parameter */ |
| gpio_set_value(spi_mosi, dc); |
| udelay(1); /* at least 20 ns */ |
| gpio_set_value(spi_sclk, 1); /* clk high */ |
| udelay(1); /* at least 20 ns */ |
| bnum = 8; /* 8 data bits */ |
| bit = 0x80; |
| while (bnum) { |
| gpio_set_value(spi_sclk, 0); /* clk low */ |
| if (data & bit) |
| gpio_set_value(spi_mosi, 1); |
| else |
| gpio_set_value(spi_mosi, 0); |
| udelay(1); |
| gpio_set_value(spi_sclk, 1); /* clk high */ |
| udelay(1); |
| bit >>= 1; |
| bnum--; |
| } |
| } |
| #endif |
| |
| static int toshiba_spi_write(char cmd, uint32 data, int num) |
| { |
| char *bp; |
| #ifdef CONFIG_SPI_QSD |
| char tx_buf[4]; |
| int rc, i; |
| struct spi_message m; |
| struct spi_transfer t; |
| uint32 final_data = 0; |
| |
| if (!lcdc_toshiba_spi_client) { |
| printk(KERN_ERR "%s lcdc_toshiba_spi_client is NULL\n", |
| __func__); |
| return -EINVAL; |
| } |
| |
| memset(&t, 0, sizeof t); |
| t.tx_buf = tx_buf; |
| spi_setup(lcdc_toshiba_spi_client); |
| spi_message_init(&m); |
| spi_message_add_tail(&t, &m); |
| |
| /* command byte first */ |
| final_data |= cmd << 23; |
| t.len = num + 2; |
| if (t.len < 4) |
| t.bits_per_word = 8 * t.len; |
| /* followed by parameter bytes */ |
| if (num) { |
| bp = (char *)&data;; |
| bp += (num - 1); |
| i = 1; |
| while (num) { |
| final_data |= 1 << (((4 - i) << 3) - i - 1); |
| final_data |= *bp << (((4 - i - 1) << 3) - i - 1); |
| num--; |
| bp--; |
| i++; |
| } |
| } |
| |
| bp = (char *)&final_data; |
| for (i = 0; i < t.len; i++) |
| tx_buf[i] = bp[3 - i]; |
| t.rx_buf = NULL; |
| rc = spi_sync(lcdc_toshiba_spi_client, &m); |
| if (rc) |
| printk(KERN_ERR "spi_sync _write failed %d\n", rc); |
| return rc; |
| #else |
| gpio_set_value(spi_cs, 1); /* cs high */ |
| |
| /* command byte first */ |
| toshiba_spi_write_byte(0, cmd); |
| |
| /* followed by parameter bytes */ |
| if (num) { |
| bp = (char *)&data;; |
| bp += (num - 1); |
| while (num) { |
| toshiba_spi_write_byte(1, *bp); |
| num--; |
| bp--; |
| } |
| } |
| |
| gpio_set_value(spi_cs, 0); /* cs low */ |
| udelay(1); |
| return 0; |
| #endif |
| } |
| |
| static int toshiba_spi_read_bytes(char cmd, uint32 *data, int num) |
| { |
| #ifdef CONFIG_SPI_QSD |
| char tx_buf[5]; |
| char rx_buf[5]; |
| int rc; |
| struct spi_message m; |
| struct spi_transfer t; |
| |
| if (!lcdc_toshiba_spi_client) { |
| printk(KERN_ERR "%s lcdc_toshiba_spi_client is NULL\n", |
| __func__); |
| return -EINVAL; |
| } |
| |
| memset(&t, 0, sizeof t); |
| t.tx_buf = tx_buf; |
| t.rx_buf = rx_buf; |
| spi_setup(lcdc_toshiba_spi_client); |
| spi_message_init(&m); |
| spi_message_add_tail(&t, &m); |
| |
| /* command byte first */ |
| tx_buf[0] = 0 | ((cmd >> 1) & 0x7f); |
| tx_buf[1] = (cmd & 0x01) << 7; |
| tx_buf[2] = 0; |
| tx_buf[3] = 0; |
| tx_buf[4] = 0; |
| |
| t.len = 5; |
| |
| rc = spi_sync(lcdc_toshiba_spi_client, &m); |
| *data = 0; |
| *data = ((rx_buf[1] & 0x1f) << 19) | (rx_buf[2] << 11) | |
| (rx_buf[3] << 3) | ((rx_buf[4] & 0xe0) >> 5); |
| if (rc) |
| printk(KERN_ERR "spi_sync _read failed %d\n", rc); |
| return rc; |
| #else |
| uint32 dbit, bits; |
| int bnum; |
| |
| gpio_set_value(spi_cs, 1); /* cs high */ |
| |
| /* command byte first */ |
| toshiba_spi_write_byte(0, cmd); |
| |
| if (num > 1) { |
| /* extra dc bit */ |
| gpio_set_value(spi_sclk, 0); /* clk low */ |
| udelay(1); |
| dbit = gpio_get_value(spi_miso);/* dc bit */ |
| udelay(1); |
| gpio_set_value(spi_sclk, 1); /* clk high */ |
| } |
| |
| /* followed by data bytes */ |
| bnum = num * 8; /* number of bits */ |
| bits = 0; |
| while (bnum) { |
| bits <<= 1; |
| gpio_set_value(spi_sclk, 0); /* clk low */ |
| udelay(1); |
| dbit = gpio_get_value(spi_miso); |
| udelay(1); |
| gpio_set_value(spi_sclk, 1); /* clk high */ |
| bits |= dbit; |
| bnum--; |
| } |
| |
| *data = bits; |
| |
| udelay(1); |
| gpio_set_value(spi_cs, 0); /* cs low */ |
| udelay(1); |
| return 0; |
| #endif |
| } |
| |
| #ifndef CONFIG_SPI_QSD |
| static void spi_pin_assign(void) |
| { |
| /* Setting the Default GPIO's */ |
| spi_sclk = *(lcdc_toshiba_pdata->gpio_num); |
| spi_cs = *(lcdc_toshiba_pdata->gpio_num + 1); |
| spi_mosi = *(lcdc_toshiba_pdata->gpio_num + 2); |
| spi_miso = *(lcdc_toshiba_pdata->gpio_num + 3); |
| } |
| #endif |
| |
| static void toshiba_disp_powerup(void) |
| { |
| if (!toshiba_state.disp_powered_up && !toshiba_state.display_on) { |
| /* Reset the hardware first */ |
| /* Include DAC power up implementation here */ |
| toshiba_state.disp_powered_up = TRUE; |
| } |
| } |
| |
| static void toshiba_disp_on(void) |
| { |
| uint32 data; |
| |
| #ifndef CONFIG_SPI_QSD |
| gpio_set_value(spi_cs, 0); /* low */ |
| gpio_set_value(spi_sclk, 1); /* high */ |
| gpio_set_value(spi_mosi, 0); |
| gpio_set_value(spi_miso, 0); |
| #endif |
| |
| if (toshiba_state.disp_powered_up && !toshiba_state.display_on) { |
| toshiba_spi_write(0, 0, 0); |
| mdelay(7); |
| toshiba_spi_write(0, 0, 0); |
| mdelay(7); |
| toshiba_spi_write(0, 0, 0); |
| mdelay(7); |
| toshiba_spi_write(0xba, 0x11, 1); |
| toshiba_spi_write(0x36, 0x00, 1); |
| mdelay(1); |
| toshiba_spi_write(0x3a, 0x60, 1); |
| toshiba_spi_write(0xb1, 0x5d, 1); |
| mdelay(1); |
| toshiba_spi_write(0xb2, 0x33, 1); |
| toshiba_spi_write(0xb3, 0x22, 1); |
| mdelay(1); |
| toshiba_spi_write(0xb4, 0x02, 1); |
| toshiba_spi_write(0xb5, 0x1e, 1); /* vcs -- adjust brightness */ |
| mdelay(1); |
| toshiba_spi_write(0xb6, 0x27, 1); |
| toshiba_spi_write(0xb7, 0x03, 1); |
| mdelay(1); |
| toshiba_spi_write(0xb9, 0x24, 1); |
| toshiba_spi_write(0xbd, 0xa1, 1); |
| mdelay(1); |
| toshiba_spi_write(0xbb, 0x00, 1); |
| toshiba_spi_write(0xbf, 0x01, 1); |
| mdelay(1); |
| toshiba_spi_write(0xbe, 0x00, 1); |
| toshiba_spi_write(0xc0, 0x11, 1); |
| mdelay(1); |
| toshiba_spi_write(0xc1, 0x11, 1); |
| toshiba_spi_write(0xc2, 0x11, 1); |
| mdelay(1); |
| toshiba_spi_write(0xc3, 0x3232, 2); |
| mdelay(1); |
| toshiba_spi_write(0xc4, 0x3232, 2); |
| mdelay(1); |
| toshiba_spi_write(0xc5, 0x3232, 2); |
| mdelay(1); |
| toshiba_spi_write(0xc6, 0x3232, 2); |
| mdelay(1); |
| toshiba_spi_write(0xc7, 0x6445, 2); |
| mdelay(1); |
| toshiba_spi_write(0xc8, 0x44, 1); |
| toshiba_spi_write(0xc9, 0x52, 1); |
| mdelay(1); |
| toshiba_spi_write(0xca, 0x00, 1); |
| mdelay(1); |
| toshiba_spi_write(0xec, 0x02a4, 2); /* 0x02a4 */ |
| mdelay(1); |
| toshiba_spi_write(0xcf, 0x01, 1); |
| mdelay(1); |
| toshiba_spi_write(0xd0, 0xc003, 2); /* c003 */ |
| mdelay(1); |
| toshiba_spi_write(0xd1, 0x01, 1); |
| mdelay(1); |
| toshiba_spi_write(0xd2, 0x0028, 2); |
| mdelay(1); |
| toshiba_spi_write(0xd3, 0x0028, 2); |
| mdelay(1); |
| toshiba_spi_write(0xd4, 0x26a4, 2); |
| mdelay(1); |
| toshiba_spi_write(0xd5, 0x20, 1); |
| mdelay(1); |
| toshiba_spi_write(0xef, 0x3200, 2); |
| mdelay(32); |
| toshiba_spi_write(0xbc, 0x80, 1); /* wvga pass through */ |
| toshiba_spi_write(0x3b, 0x00, 1); |
| mdelay(1); |
| toshiba_spi_write(0xb0, 0x16, 1); |
| mdelay(1); |
| toshiba_spi_write(0xb8, 0xfff5, 2); |
| mdelay(1); |
| toshiba_spi_write(0x11, 0, 0); |
| mdelay(5); |
| toshiba_spi_write(0x29, 0, 0); |
| mdelay(5); |
| toshiba_state.display_on = TRUE; |
| } |
| |
| data = 0; |
| toshiba_spi_read_bytes(0x04, &data, 3); |
| printk(KERN_INFO "toshiba_disp_on: id=%x\n", data); |
| |
| } |
| |
| static int lcdc_toshiba_panel_on(struct platform_device *pdev) |
| { |
| if (!toshiba_state.disp_initialized) { |
| /* Configure reset GPIO that drives DAC */ |
| if (lcdc_toshiba_pdata->panel_config_gpio) |
| lcdc_toshiba_pdata->panel_config_gpio(1); |
| toshiba_disp_powerup(); |
| toshiba_disp_on(); |
| toshiba_state.disp_initialized = TRUE; |
| } |
| return 0; |
| } |
| |
| static int lcdc_toshiba_panel_off(struct platform_device *pdev) |
| { |
| if (toshiba_state.disp_powered_up && toshiba_state.display_on) { |
| /* Main panel power off (Deep standby in) */ |
| |
| toshiba_spi_write(0x28, 0, 0); /* display off */ |
| mdelay(1); |
| toshiba_spi_write(0xb8, 0x8002, 2); /* output control */ |
| mdelay(1); |
| toshiba_spi_write(0x10, 0x00, 1); /* sleep mode in */ |
| mdelay(85); /* wait 85 msec */ |
| toshiba_spi_write(0xb0, 0x00, 1); /* deep standby in */ |
| mdelay(1); |
| if (lcdc_toshiba_pdata->panel_config_gpio) |
| lcdc_toshiba_pdata->panel_config_gpio(0); |
| toshiba_state.display_on = FALSE; |
| toshiba_state.disp_initialized = FALSE; |
| } |
| return 0; |
| } |
| |
| static void lcdc_toshiba_set_backlight(struct msm_fb_data_type *mfd) |
| { |
| int bl_level; |
| int ret = -EPERM; |
| int i = 0; |
| |
| bl_level = mfd->bl_level; |
| |
| while (i++ < 3) { |
| ret = pmic_set_led_intensity(LED_LCD, bl_level); |
| if (ret == 0) |
| return; |
| msleep(10); |
| } |
| |
| printk(KERN_WARNING "%s: can't set lcd backlight!\n", |
| __func__); |
| } |
| |
| static int __devinit toshiba_probe(struct platform_device *pdev) |
| { |
| if (pdev->id == 0) { |
| lcdc_toshiba_pdata = pdev->dev.platform_data; |
| #ifndef CONFIG_SPI_QSD |
| spi_pin_assign(); |
| #endif |
| return 0; |
| } |
| msm_fb_add_device(pdev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_SPI_QSD |
| static int __devinit lcdc_toshiba_spi_probe(struct spi_device *spi) |
| { |
| lcdc_toshiba_spi_client = spi; |
| lcdc_toshiba_spi_client->bits_per_word = 32; |
| return 0; |
| } |
| static int __devexit lcdc_toshiba_spi_remove(struct spi_device *spi) |
| { |
| lcdc_toshiba_spi_client = NULL; |
| return 0; |
| } |
| |
| static struct spi_driver lcdc_toshiba_spi_driver = { |
| .driver = { |
| .name = LCDC_TOSHIBA_SPI_DEVICE_NAME, |
| .owner = THIS_MODULE, |
| }, |
| .probe = lcdc_toshiba_spi_probe, |
| .remove = __devexit_p(lcdc_toshiba_spi_remove), |
| }; |
| #endif |
| static struct platform_driver this_driver = { |
| .probe = toshiba_probe, |
| .driver = { |
| .name = "lcdc_toshiba_wvga", |
| }, |
| }; |
| |
| static struct msm_fb_panel_data toshiba_panel_data = { |
| .on = lcdc_toshiba_panel_on, |
| .off = lcdc_toshiba_panel_off, |
| .set_backlight = lcdc_toshiba_set_backlight, |
| }; |
| |
| static struct platform_device this_device = { |
| .name = "lcdc_toshiba_wvga", |
| .id = 1, |
| .dev = { |
| .platform_data = &toshiba_panel_data, |
| } |
| }; |
| |
| static int __init lcdc_toshiba_panel_init(void) |
| { |
| int ret; |
| struct msm_panel_info *pinfo; |
| #ifdef CONFIG_FB_MSM_TRY_MDDI_CATCH_LCDC_PRISM |
| if (mddi_get_client_id() != 0) |
| return 0; |
| |
| ret = msm_fb_detect_client("lcdc_toshiba_wvga_pt"); |
| if (ret) |
| return 0; |
| |
| #endif |
| |
| ret = platform_driver_register(&this_driver); |
| if (ret) |
| return ret; |
| |
| pinfo = &toshiba_panel_data.panel_info; |
| pinfo->xres = 480; |
| pinfo->yres = 800; |
| MSM_FB_SINGLE_MODE_PANEL(pinfo); |
| pinfo->type = LCDC_PANEL; |
| pinfo->pdest = DISPLAY_1; |
| pinfo->wait_cycle = 0; |
| pinfo->bpp = 18; |
| pinfo->fb_num = 2; |
| /* 30Mhz mdp_lcdc_pclk and mdp_lcdc_pad_pcl */ |
| pinfo->clk_rate = 30720000; |
| pinfo->bl_max = 15; |
| pinfo->bl_min = 1; |
| |
| pinfo->lcdc.h_back_porch = 184; /* hsw = 8 + hbp=184 */ |
| pinfo->lcdc.h_front_porch = 4; |
| pinfo->lcdc.h_pulse_width = 8; |
| pinfo->lcdc.v_back_porch = 2; /* vsw=1 + vbp = 2 */ |
| pinfo->lcdc.v_front_porch = 3; |
| pinfo->lcdc.v_pulse_width = 1; |
| pinfo->lcdc.border_clr = 0; /* blk */ |
| pinfo->lcdc.underflow_clr = 0xff; /* blue */ |
| pinfo->lcdc.hsync_skew = 0; |
| |
| ret = platform_device_register(&this_device); |
| if (ret) { |
| printk(KERN_ERR "%s not able to register the device\n", |
| __func__); |
| goto fail_driver; |
| } |
| #ifdef CONFIG_SPI_QSD |
| ret = spi_register_driver(&lcdc_toshiba_spi_driver); |
| |
| if (ret) { |
| printk(KERN_ERR "%s not able to register spi\n", __func__); |
| goto fail_device; |
| } |
| #endif |
| return ret; |
| |
| #ifdef CONFIG_SPI_QSD |
| fail_device: |
| platform_device_unregister(&this_device); |
| #endif |
| fail_driver: |
| platform_driver_unregister(&this_driver); |
| return ret; |
| } |
| |
| device_initcall(lcdc_toshiba_panel_init); |