| /* Copyright (c) 2011, 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) "%s: " fmt, __func__ |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #ifdef CONFIG_SPI_QUP |
| #include <linux/spi/spi.h> |
| #endif |
| #include <mach/gpio.h> |
| #include <mach/pmic.h> |
| #include "msm_fb.h" |
| |
| #define LCDC_NT35582_PANEL_NAME "lcdc_nt35582_wvga" |
| |
| #define WRITE_FIRST_TRANS 0x20 |
| #define WRITE_SECOND_TRANS 0x00 |
| #define WRITE_THIRD_TRANS 0x40 |
| #define READ_FIRST_TRANS 0x20 |
| #define READ_SECOND_TRANS 0x00 |
| #define READ_THIRD_TRANS 0xC0 |
| |
| #ifdef CONFIG_SPI_QUP |
| #define LCDC_NT35582_SPI_DEVICE_NAME "lcdc_nt35582_spi" |
| static struct spi_device *spi_client; |
| #endif |
| |
| struct nt35582_state_type { |
| boolean display_on; |
| int bl_level; |
| }; |
| |
| static struct nt35582_state_type nt35582_state = { 0 }; |
| static int gpio_backlight_en; |
| static struct msm_panel_common_pdata *lcdc_nt35582_pdata; |
| |
| static int spi_write_2bytes(struct spi_device *spi, |
| unsigned char reg_high_addr, unsigned char reg_low_addr) |
| { |
| char tx_buf[4]; |
| int rc; |
| struct spi_message m; |
| struct spi_transfer t; |
| |
| memset(&t, 0, sizeof t); |
| t.tx_buf = tx_buf; |
| |
| spi_setup(spi); |
| spi_message_init(&m); |
| spi_message_add_tail(&t, &m); |
| |
| tx_buf[0] = WRITE_FIRST_TRANS; |
| tx_buf[1] = reg_high_addr; |
| tx_buf[2] = WRITE_SECOND_TRANS; |
| tx_buf[3] = reg_low_addr; |
| t.rx_buf = NULL; |
| t.len = 4; |
| t.bits_per_word = 16; |
| rc = spi_sync(spi, &m); |
| if (rc) |
| pr_err("write spi command failed!\n"); |
| |
| return rc; |
| } |
| |
| static int spi_write_3bytes(struct spi_device *spi, unsigned char reg_high_addr, |
| unsigned char reg_low_addr, unsigned char write_data) |
| { |
| char tx_buf[6]; |
| int rc; |
| struct spi_message m; |
| struct spi_transfer t; |
| |
| memset(&t, 0, sizeof t); |
| t.tx_buf = tx_buf; |
| |
| spi_setup(spi); |
| spi_message_init(&m); |
| spi_message_add_tail(&t, &m); |
| |
| tx_buf[0] = WRITE_FIRST_TRANS; |
| tx_buf[1] = reg_high_addr; |
| tx_buf[2] = WRITE_SECOND_TRANS; |
| tx_buf[3] = reg_low_addr; |
| tx_buf[4] = WRITE_THIRD_TRANS; |
| tx_buf[5] = write_data; |
| t.rx_buf = NULL; |
| t.len = 6; |
| t.bits_per_word = 16; |
| rc = spi_sync(spi, &m); |
| |
| if (rc) |
| pr_err("write spi command failed!\n"); |
| |
| return rc; |
| } |
| |
| static int spi_read_bytes(struct spi_device *spi, unsigned char reg_high_addr, |
| unsigned char reg_low_addr, unsigned char *read_value) |
| { |
| char tx_buf[6]; |
| char rx_buf[6]; |
| int rc; |
| struct spi_message m; |
| struct spi_transfer t; |
| |
| memset(&t, 0, sizeof t); |
| t.tx_buf = tx_buf; |
| |
| spi_setup(spi); |
| spi_message_init(&m); |
| spi_message_add_tail(&t, &m); |
| |
| tx_buf[0] = READ_FIRST_TRANS; |
| tx_buf[1] = reg_high_addr; |
| tx_buf[2] = READ_SECOND_TRANS; |
| tx_buf[3] = reg_low_addr; |
| tx_buf[4] = READ_THIRD_TRANS; |
| tx_buf[5] = 0x00; |
| |
| t.rx_buf = rx_buf; |
| t.len = 6; |
| t.bits_per_word = 16; |
| rc = spi_sync(spi, &m); |
| |
| if (rc) |
| pr_err("write spi command failed!\n"); |
| else |
| *read_value = rx_buf[5]; |
| |
| return rc; |
| } |
| |
| static void nt35582_disp_on(void) |
| { |
| uint32 panel_id1 = 0, panel_id2 = 0; |
| |
| if (!nt35582_state.display_on) { |
| |
| /* GVDD setting */ |
| spi_write_3bytes(spi_client, 0xC0, 0x00, 0xC0); |
| spi_write_3bytes(spi_client, 0xC0, 0x01, 0x00); |
| spi_write_3bytes(spi_client, 0xC0, 0x02, 0xC0); |
| spi_write_3bytes(spi_client, 0xC0, 0x03, 0x00); |
| /* Power setting */ |
| spi_write_3bytes(spi_client, 0xC1, 0x00, 0x40); |
| spi_write_3bytes(spi_client, 0xC2, 0x00, 0x21); |
| spi_write_3bytes(spi_client, 0xC2, 0x02, 0x02); |
| |
| /* Gamma setting */ |
| spi_write_3bytes(spi_client, 0xE0, 0x00, 0x0E); |
| spi_write_3bytes(spi_client, 0xE0, 0x01, 0x54); |
| spi_write_3bytes(spi_client, 0xE0, 0x02, 0x63); |
| spi_write_3bytes(spi_client, 0xE0, 0x03, 0x76); |
| spi_write_3bytes(spi_client, 0xE0, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE0, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE0, 0x06, 0x62); |
| spi_write_3bytes(spi_client, 0xE0, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE0, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE0, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE0, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE0, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE0, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE0, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE0, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE0, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE0, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE0, 0x11, 0x57); |
| |
| spi_write_3bytes(spi_client, 0xE1, 0x00, 0x0E); |
| spi_write_3bytes(spi_client, 0xE1, 0x01, 0x54); |
| spi_write_3bytes(spi_client, 0xE1, 0x02, 0x63); |
| spi_write_3bytes(spi_client, 0xE1, 0x03, 0x76); |
| spi_write_3bytes(spi_client, 0xE1, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE1, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE1, 0x06, 0X62); |
| spi_write_3bytes(spi_client, 0xE1, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE1, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE1, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE1, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE1, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE1, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE1, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE1, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE1, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE1, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE1, 0x11, 0x57); |
| |
| spi_write_3bytes(spi_client, 0xE2, 0x00, 0x0E); |
| spi_write_3bytes(spi_client, 0xE2, 0x01, 0x54); |
| spi_write_3bytes(spi_client, 0xE2, 0x02, 0x63); |
| spi_write_3bytes(spi_client, 0xE2, 0x03, 0x76); |
| spi_write_3bytes(spi_client, 0xE2, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE2, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE2, 0x06, 0x62); |
| spi_write_3bytes(spi_client, 0xE2, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE2, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE2, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE2, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE2, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE2, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE2, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE2, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE2, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE2, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE2, 0x11, 0x57); |
| |
| spi_write_3bytes(spi_client, 0xE3, 0x00, 0x0E); |
| spi_write_3bytes(spi_client, 0xE3, 0x01, 0x54); |
| spi_write_3bytes(spi_client, 0xE3, 0x02, 0x63); |
| spi_write_3bytes(spi_client, 0xE3, 0x03, 0x76); |
| spi_write_3bytes(spi_client, 0xE3, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE3, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE3, 0x06, 0x62); |
| spi_write_3bytes(spi_client, 0xE3, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE3, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE3, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE3, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE3, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE3, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE3, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE3, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE3, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE3, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE3, 0x11, 0x57); |
| |
| spi_write_3bytes(spi_client, 0xE4, 0x00, 0x48); |
| spi_write_3bytes(spi_client, 0xE4, 0x01, 0x6B); |
| spi_write_3bytes(spi_client, 0xE4, 0x02, 0x84); |
| spi_write_3bytes(spi_client, 0xE4, 0x03, 0x9B); |
| spi_write_3bytes(spi_client, 0xE4, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE4, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE4, 0x06, 0x62); |
| spi_write_3bytes(spi_client, 0xE4, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE4, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE4, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE4, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE4, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE4, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE4, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE4, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE4, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE4, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE4, 0x11, 0x57); |
| |
| spi_write_3bytes(spi_client, 0xE5, 0x00, 0x48); |
| spi_write_3bytes(spi_client, 0xE5, 0x01, 0x6B); |
| spi_write_3bytes(spi_client, 0xE5, 0x02, 0x84); |
| spi_write_3bytes(spi_client, 0xE5, 0x03, 0x9B); |
| spi_write_3bytes(spi_client, 0xE5, 0x04, 0x1F); |
| spi_write_3bytes(spi_client, 0xE5, 0x05, 0x31); |
| spi_write_3bytes(spi_client, 0xE5, 0x06, 0x62); |
| spi_write_3bytes(spi_client, 0xE5, 0x07, 0x78); |
| spi_write_3bytes(spi_client, 0xE5, 0x08, 0x1F); |
| spi_write_3bytes(spi_client, 0xE5, 0x09, 0x25); |
| spi_write_3bytes(spi_client, 0xE5, 0x0A, 0xB3); |
| spi_write_3bytes(spi_client, 0xE5, 0x0B, 0x17); |
| spi_write_3bytes(spi_client, 0xE5, 0x0C, 0x38); |
| spi_write_3bytes(spi_client, 0xE5, 0x0D, 0x5A); |
| spi_write_3bytes(spi_client, 0xE5, 0x0E, 0xA2); |
| spi_write_3bytes(spi_client, 0xE5, 0x0F, 0xA2); |
| spi_write_3bytes(spi_client, 0xE5, 0x10, 0x24); |
| spi_write_3bytes(spi_client, 0xE5, 0x11, 0x57); |
| |
| /* Data format setting */ |
| spi_write_3bytes(spi_client, 0x3A, 0x00, 0x70); |
| |
| /* Reverse PCLK signal of LCM to meet Qualcomm's platform */ |
| spi_write_3bytes(spi_client, 0x3B, 0x00, 0x2B); |
| |
| /* Scan direstion setting */ |
| spi_write_3bytes(spi_client, 0x36, 0x00, 0x00); |
| |
| /* Sleep out */ |
| spi_write_2bytes(spi_client, 0x11, 0x00); |
| |
| msleep(120); |
| |
| /* Display on */ |
| spi_write_2bytes(spi_client, 0x29, 0x00); |
| |
| pr_info("%s: LCM SPI display on CMD finished...\n", __func__); |
| |
| msleep(200); |
| |
| nt35582_state.display_on = TRUE; |
| } |
| |
| /* Test to read RDDID. It should be 0x0055h and 0x0082h */ |
| spi_read_bytes(spi_client, 0x10, 0x80, (unsigned char *)&panel_id1); |
| spi_read_bytes(spi_client, 0x11, 0x80, (unsigned char *)&panel_id2); |
| |
| pr_info(KERN_INFO "nt35582_disp_on: LCM_ID=[0x%x, 0x%x]\n", |
| panel_id1, panel_id2); |
| } |
| |
| static int lcdc_nt35582_panel_on(struct platform_device *pdev) |
| { |
| nt35582_disp_on(); |
| return 0; |
| } |
| |
| static int lcdc_nt35582_panel_off(struct platform_device *pdev) |
| { |
| nt35582_state.display_on = FALSE; |
| return 0; |
| } |
| |
| static void lcdc_nt35582_set_backlight(struct msm_fb_data_type *mfd) |
| { |
| int bl_level; |
| int i = 0, step = 0; |
| |
| bl_level = mfd->bl_level; |
| if (bl_level == nt35582_state.bl_level) |
| return; |
| else |
| nt35582_state.bl_level = bl_level; |
| |
| if (bl_level == 0) { |
| gpio_set_value_cansleep(gpio_backlight_en, 0); |
| return; |
| } |
| |
| /* Level:0~31 mapping to step 32~1 */ |
| step = 32 - bl_level; |
| for (i = 0; i < step; i++) { |
| gpio_set_value_cansleep(gpio_backlight_en, 0); |
| ndelay(5); |
| gpio_set_value_cansleep(gpio_backlight_en, 1); |
| ndelay(5); |
| } |
| } |
| |
| static int __devinit nt35582_probe(struct platform_device *pdev) |
| { |
| if (pdev->id == 0) { |
| lcdc_nt35582_pdata = pdev->dev.platform_data; |
| return 0; |
| } |
| |
| gpio_backlight_en = *(lcdc_nt35582_pdata->gpio_num); |
| |
| msm_fb_add_device(pdev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_SPI_QUP |
| static int __devinit lcdc_nt35582_spi_probe(struct spi_device *spi) |
| { |
| spi_client = spi; |
| spi_client->bits_per_word = 16; |
| spi_client->chip_select = 0; |
| spi_client->max_speed_hz = 1100000; |
| spi_client->mode = SPI_MODE_0; |
| spi_setup(spi_client); |
| |
| return 0; |
| } |
| |
| static int __devexit lcdc_nt35582_spi_remove(struct spi_device *spi) |
| { |
| spi_client = NULL; |
| return 0; |
| } |
| |
| static struct spi_driver lcdc_nt35582_spi_driver = { |
| .driver = { |
| .name = LCDC_NT35582_SPI_DEVICE_NAME, |
| .owner = THIS_MODULE, |
| }, |
| .probe = lcdc_nt35582_spi_probe, |
| .remove = __devexit_p(lcdc_nt35582_spi_remove), |
| }; |
| #endif |
| static struct platform_driver this_driver = { |
| .probe = nt35582_probe, |
| .driver = { |
| .name = LCDC_NT35582_PANEL_NAME, |
| }, |
| }; |
| |
| static struct msm_fb_panel_data nt35582_panel_data = { |
| .on = lcdc_nt35582_panel_on, |
| .off = lcdc_nt35582_panel_off, |
| .set_backlight = lcdc_nt35582_set_backlight, |
| }; |
| |
| static struct platform_device this_device = { |
| .name = LCDC_NT35582_PANEL_NAME, |
| .id = 1, |
| .dev = { |
| .platform_data = &nt35582_panel_data, |
| } |
| }; |
| |
| static int __init lcdc_nt35582_panel_init(void) |
| { |
| int ret; |
| struct msm_panel_info *pinfo; |
| |
| #ifdef CONFIG_FB_MSM_LCDC_AUTO_DETECT |
| if (msm_fb_detect_client(LCDC_NT35582_PANEL_NAME)) { |
| pr_err("detect failed\n"); |
| return 0; |
| } |
| #endif |
| ret = platform_driver_register(&this_driver); |
| if (ret) { |
| pr_err("Fails to platform_driver_register...\n"); |
| return ret; |
| } |
| |
| pinfo = &nt35582_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 = 24; |
| pinfo->fb_num = 2; |
| pinfo->clk_rate = 25600000; |
| pinfo->bl_max = 31; |
| pinfo->bl_min = 1; |
| |
| pinfo->lcdc.h_back_porch = 10; /* hsw = 8 + hbp=184 */ |
| pinfo->lcdc.h_front_porch = 10; |
| pinfo->lcdc.h_pulse_width = 2; |
| pinfo->lcdc.v_back_porch = 4; /* vsw=1 + vbp = 2 */ |
| pinfo->lcdc.v_front_porch = 10; |
| pinfo->lcdc.v_pulse_width = 2; |
| 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) { |
| pr_err("not able to register the device\n"); |
| goto fail_driver; |
| } |
| #ifdef CONFIG_SPI_QUP |
| ret = spi_register_driver(&lcdc_nt35582_spi_driver); |
| |
| if (ret) { |
| pr_err("not able to register spi\n"); |
| goto fail_device; |
| } |
| #endif |
| return ret; |
| |
| #ifdef CONFIG_SPI_QUP |
| fail_device: |
| platform_device_unregister(&this_device); |
| #endif |
| fail_driver: |
| platform_driver_unregister(&this_driver); |
| return ret; |
| } |
| |
| device_initcall(lcdc_nt35582_panel_init); |