diff options
Diffstat (limited to 'drivers/staging/msm/lcdc_gordon.c')
| -rw-r--r-- | drivers/staging/msm/lcdc_gordon.c | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/drivers/staging/msm/lcdc_gordon.c b/drivers/staging/msm/lcdc_gordon.c new file mode 100644 index 000000000000..399ec8c791ec --- /dev/null +++ b/drivers/staging/msm/lcdc_gordon.c @@ -0,0 +1,446 @@ +/* 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> +#include <mach/gpio.h> +#include "msm_fb.h" + +/* registers */ +#define GORDON_REG_NOP 0x00 +#define GORDON_REG_IMGCTL1 0x10 +#define GORDON_REG_IMGCTL2 0x11 +#define GORDON_REG_IMGSET1 0x12 +#define GORDON_REG_IMGSET2 0x13 +#define GORDON_REG_IVBP1 0x14 +#define GORDON_REG_IHBP1 0x15 +#define GORDON_REG_IVNUM1 0x16 +#define GORDON_REG_IHNUM1 0x17 +#define GORDON_REG_IVBP2 0x18 +#define GORDON_REG_IHBP2 0x19 +#define GORDON_REG_IVNUM2 0x1A +#define GORDON_REG_IHNUM2 0x1B +#define GORDON_REG_LCDIFCTL1 0x30 +#define GORDON_REG_VALTRAN 0x31 +#define GORDON_REG_AVCTL 0x33 +#define GORDON_REG_LCDIFCTL2 0x34 +#define GORDON_REG_LCDIFCTL3 0x35 +#define GORDON_REG_LCDIFSET1 0x36 +#define GORDON_REG_PCCTL 0x3C +#define GORDON_REG_TPARAM1 0x40 +#define GORDON_REG_TLCDIF1 0x41 +#define GORDON_REG_TSSPB_ST1 0x42 +#define GORDON_REG_TSSPB_ED1 0x43 +#define GORDON_REG_TSCK_ST1 0x44 +#define GORDON_REG_TSCK_WD1 0x45 +#define GORDON_REG_TGSPB_VST1 0x46 +#define GORDON_REG_TGSPB_VED1 0x47 +#define GORDON_REG_TGSPB_CH1 0x48 +#define GORDON_REG_TGCK_ST1 0x49 +#define GORDON_REG_TGCK_ED1 0x4A +#define GORDON_REG_TPCTL_ST1 0x4B +#define GORDON_REG_TPCTL_ED1 0x4C +#define GORDON_REG_TPCHG_ED1 0x4D +#define GORDON_REG_TCOM_CH1 0x4E +#define GORDON_REG_THBP1 0x4F +#define GORDON_REG_TPHCTL1 0x50 +#define GORDON_REG_EVPH1 0x51 +#define GORDON_REG_EVPL1 0x52 +#define GORDON_REG_EVNH1 0x53 +#define GORDON_REG_EVNL1 0x54 +#define GORDON_REG_TBIAS1 0x55 +#define GORDON_REG_TPARAM2 0x56 +#define GORDON_REG_TLCDIF2 0x57 +#define GORDON_REG_TSSPB_ST2 0x58 +#define GORDON_REG_TSSPB_ED2 0x59 +#define GORDON_REG_TSCK_ST2 0x5A +#define GORDON_REG_TSCK_WD2 0x5B +#define GORDON_REG_TGSPB_VST2 0x5C +#define GORDON_REG_TGSPB_VED2 0x5D +#define GORDON_REG_TGSPB_CH2 0x5E +#define GORDON_REG_TGCK_ST2 0x5F +#define GORDON_REG_TGCK_ED2 0x60 +#define GORDON_REG_TPCTL_ST2 0x61 +#define GORDON_REG_TPCTL_ED2 0x62 +#define GORDON_REG_TPCHG_ED2 0x63 +#define GORDON_REG_TCOM_CH2 0x64 +#define GORDON_REG_THBP2 0x65 +#define GORDON_REG_TPHCTL2 0x66 +#define GORDON_REG_POWCTL 0x80 + +static int lcdc_gordon_panel_off(struct platform_device *pdev); + +static int spi_cs; +static int spi_sclk; +static int spi_sdo; +static int spi_sdi; +static int spi_dac; +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 gordon_state_type{ + boolean disp_initialized; + boolean display_on; + boolean disp_powered_up; +}; + +static struct gordon_state_type gordon_state = { 0 }; +static struct msm_panel_common_pdata *lcdc_gordon_pdata; + +static void serigo(uint16 reg, uint8 data) +{ + unsigned int tx_val = ((0x00FF & reg) << 8) | data; + unsigned char i, val = 0; + + /* Enable the Chip Select */ + gpio_set_value(spi_cs, 1); + udelay(33); + + /* Transmit it in two parts, Higher Byte first, then Lower Byte */ + val = (unsigned char)((tx_val & 0xFF00) >> 8); + + /* 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_sdi, 1); + else + gpio_set_value(spi_sdi, 0); + + /* #2: Drive the Clk High and then Low */ + udelay(33); + gpio_set_value(spi_sclk, 1); + udelay(33); + gpio_set_value(spi_sclk, 0); + } + + /* Idle state of SDO (MOSI) is Low */ + gpio_set_value(spi_sdi, 0); + /* ..then Lower Byte */ + val = (uint8) (tx_val & 0x00FF); + /* Before we enter here the Clock should be Low ! */ + + for (i = 0; i < 8; i++) { + /* #1: Drive the Data (High or Low) */ + if (val & bit_shift[i]) + gpio_set_value(spi_sdi, 1); + else + gpio_set_value(spi_sdi, 0); + + /* #2: Drive the Clk High and then Low */ + udelay(33); + + gpio_set_value(spi_sclk, 1); + udelay(33); + gpio_set_value(spi_sclk, 0); + } + + /* Idle state of SDO (MOSI) is Low */ + gpio_set_value(spi_sdi, 0); + + /* Now Disable the Chip Select */ + udelay(33); + gpio_set_value(spi_cs, 0); +} + +static void spi_init(void) +{ + /* Setting the Default GPIO's */ + spi_sclk = *(lcdc_gordon_pdata->gpio_num); + spi_cs = *(lcdc_gordon_pdata->gpio_num + 1); + spi_sdi = *(lcdc_gordon_pdata->gpio_num + 2); + spi_sdo = *(lcdc_gordon_pdata->gpio_num + 3); + + /* Set the output so that we dont disturb the slave device */ + gpio_set_value(spi_sclk, 0); + gpio_set_value(spi_sdi, 0); + + /* Set the Chip Select De-asserted */ + gpio_set_value(spi_cs, 0); + +} + +static void gordon_disp_powerup(void) +{ + if (!gordon_state.disp_powered_up && !gordon_state.display_on) { + /* Reset the hardware first */ + /* Include DAC power up implementation here */ + gordon_state.disp_powered_up = TRUE; + } +} + +static void gordon_init(void) +{ + /* Image interface settings */ + serigo(GORDON_REG_IMGCTL2, 0x00); + serigo(GORDON_REG_IMGSET1, 0x00); + + /* Exchange the RGB signal for J510(Softbank mobile) */ + serigo(GORDON_REG_IMGSET2, 0x12); + serigo(GORDON_REG_LCDIFSET1, 0x00); + + /* Pre-charge settings */ + serigo(GORDON_REG_PCCTL, 0x09); + serigo(GORDON_REG_LCDIFCTL2, 0x7B); + + mdelay(1); +} + +static void gordon_disp_on(void) +{ + if (gordon_state.disp_powered_up && !gordon_state.display_on) { + gordon_init(); + mdelay(20); + /* gordon_dispmode setting */ + serigo(GORDON_REG_TPARAM1, 0x30); + serigo(GORDON_REG_TLCDIF1, 0x00); + serigo(GORDON_REG_TSSPB_ST1, 0x8B); + serigo(GORDON_REG_TSSPB_ED1, 0x93); + serigo(GORDON_REG_TSCK_ST1, 0x88); + serigo(GORDON_REG_TSCK_WD1, 0x00); + serigo(GORDON_REG_TGSPB_VST1, 0x01); + serigo(GORDON_REG_TGSPB_VED1, 0x02); + serigo(GORDON_REG_TGSPB_CH1, 0x5E); + serigo(GORDON_REG_TGCK_ST1, 0x80); + serigo(GORDON_REG_TGCK_ED1, 0x3C); + serigo(GORDON_REG_TPCTL_ST1, 0x50); + serigo(GORDON_REG_TPCTL_ED1, 0x74); + serigo(GORDON_REG_TPCHG_ED1, 0x78); + serigo(GORDON_REG_TCOM_CH1, 0x50); + serigo(GORDON_REG_THBP1, 0x84); + serigo(GORDON_REG_TPHCTL1, 0x00); + serigo(GORDON_REG_EVPH1, 0x70); + serigo(GORDON_REG_EVPL1, 0x64); + serigo(GORDON_REG_EVNH1, 0x56); + serigo(GORDON_REG_EVNL1, 0x48); + serigo(GORDON_REG_TBIAS1, 0x88); + + /* QVGA settings */ + serigo(GORDON_REG_TPARAM2, 0x28); + serigo(GORDON_REG_TLCDIF2, 0x14); + serigo(GORDON_REG_TSSPB_ST2, 0x49); + serigo(GORDON_REG_TSSPB_ED2, 0x4B); + serigo(GORDON_REG_TSCK_ST2, 0x4A); + serigo(GORDON_REG_TSCK_WD2, 0x02); + serigo(GORDON_REG_TGSPB_VST2, 0x02); + serigo(GORDON_REG_TGSPB_VED2, 0x03); + serigo(GORDON_REG_TGSPB_CH2, 0x2F); + serigo(GORDON_REG_TGCK_ST2, 0x40); + serigo(GORDON_REG_TGCK_ED2, 0x1E); + serigo(GORDON_REG_TPCTL_ST2, 0x2C); + serigo(GORDON_REG_TPCTL_ED2, 0x3A); + serigo(GORDON_REG_TPCHG_ED2, 0x3C); + serigo(GORDON_REG_TCOM_CH2, 0x28); + serigo(GORDON_REG_THBP2, 0x4D); + serigo(GORDON_REG_TPHCTL2, 0x1A); + + /* VGA settings */ + serigo(GORDON_REG_IVBP1, 0x02); + serigo(GORDON_REG_IHBP1, 0x90); + serigo(GORDON_REG_IVNUM1, 0xA0); + serigo(GORDON_REG_IHNUM1, 0x78); + + /* QVGA settings */ + serigo(GORDON_REG_IVBP2, 0x02); + serigo(GORDON_REG_IHBP2, 0x48); + serigo(GORDON_REG_IVNUM2, 0x50); + serigo(GORDON_REG_IHNUM2, 0x3C); + + /* Gordon Charge pump settings and ON */ + serigo(GORDON_REG_POWCTL, 0x03); + mdelay(15); + serigo(GORDON_REG_POWCTL, 0x07); + mdelay(15); + + serigo(GORDON_REG_POWCTL, 0x0F); + mdelay(15); + + serigo(GORDON_REG_AVCTL, 0x03); + mdelay(15); + + serigo(GORDON_REG_POWCTL, 0x1F); + mdelay(15); + + serigo(GORDON_REG_POWCTL, 0x5F); + mdelay(15); + + serigo(GORDON_REG_POWCTL, 0x7F); + mdelay(15); + + serigo(GORDON_REG_LCDIFCTL1, 0x02); + mdelay(15); + + serigo(GORDON_REG_IMGCTL1, 0x00); + mdelay(15); + + serigo(GORDON_REG_LCDIFCTL3, 0x00); + mdelay(15); + + serigo(GORDON_REG_VALTRAN, 0x01); + mdelay(15); + + serigo(GORDON_REG_LCDIFCTL1, 0x03); + mdelay(1); + gordon_state.display_on = TRUE; + } +} + +static int lcdc_gordon_panel_on(struct platform_device *pdev) +{ + if (!gordon_state.disp_initialized) { + /* Configure reset GPIO that drives DAC */ + lcdc_gordon_pdata->panel_config_gpio(1); + spi_dac = *(lcdc_gordon_pdata->gpio_num + 4); + gpio_set_value(spi_dac, 0); + udelay(15); + gpio_set_value(spi_dac, 1); + spi_init(); /* LCD needs SPI */ + gordon_disp_powerup(); + gordon_disp_on(); + gordon_state.disp_initialized = TRUE; + } + return 0; +} + +static int lcdc_gordon_panel_off(struct platform_device *pdev) +{ + if (gordon_state.disp_powered_up && gordon_state.display_on) { + serigo(GORDON_REG_LCDIFCTL2, 0x7B); + serigo(GORDON_REG_VALTRAN, 0x01); + serigo(GORDON_REG_LCDIFCTL1, 0x02); + serigo(GORDON_REG_LCDIFCTL3, 0x01); + mdelay(20); + serigo(GORDON_REG_VALTRAN, 0x01); + serigo(GORDON_REG_IMGCTL1, 0x01); + serigo(GORDON_REG_LCDIFCTL1, 0x00); + mdelay(20); + + serigo(GORDON_REG_POWCTL, 0x1F); + mdelay(40); + + serigo(GORDON_REG_POWCTL, 0x07); + mdelay(40); + + serigo(GORDON_REG_POWCTL, 0x03); + mdelay(40); + + serigo(GORDON_REG_POWCTL, 0x00); + mdelay(40); + lcdc_gordon_pdata->panel_config_gpio(0); + gordon_state.display_on = FALSE; + gordon_state.disp_initialized = FALSE; + } + return 0; +} + +static void lcdc_gordon_set_backlight(struct msm_fb_data_type *mfd) +{ + int bl_level = mfd->bl_level; + + if (bl_level <= 1) { + /* keep back light OFF */ + serigo(GORDON_REG_LCDIFCTL2, 0x0B); + udelay(15); + serigo(GORDON_REG_VALTRAN, 0x01); + } else { + /* keep back light ON */ + serigo(GORDON_REG_LCDIFCTL2, 0x7B); + udelay(15); + serigo(GORDON_REG_VALTRAN, 0x01); + } +} + +static int __init gordon_probe(struct platform_device *pdev) +{ + if (pdev->id == 0) { + lcdc_gordon_pdata = pdev->dev.platform_data; + return 0; + } + msm_fb_add_device(pdev); + return 0; +} + +static struct platform_driver this_driver = { + .probe = gordon_probe, + .driver = { + .name = "lcdc_gordon_vga", + }, +}; + +static struct msm_fb_panel_data gordon_panel_data = { + .on = lcdc_gordon_panel_on, + .off = lcdc_gordon_panel_off, + .set_backlight = lcdc_gordon_set_backlight, +}; + +static struct platform_device this_device = { + .name = "lcdc_gordon_vga", + .id = 1, + .dev = { + .platform_data = &gordon_panel_data, + } +}; + +static int __init lcdc_gordon_panel_init(void) +{ + int ret; + struct msm_panel_info *pinfo; + +#ifdef CONFIG_FB_MSM_TRY_MDDI_CATCH_LCDC_PRISM + if (msm_fb_detect_client("lcdc_gordon_vga")) + return 0; +#endif + ret = platform_driver_register(&this_driver); + if (ret) + return ret; + + pinfo = &gordon_panel_data.panel_info; + pinfo->xres = 480; + pinfo->yres = 640; + pinfo->type = LCDC_PANEL; + pinfo->pdest = DISPLAY_1; + pinfo->wait_cycle = 0; + pinfo->bpp = 24; + pinfo->fb_num = 2; + pinfo->clk_rate = 24500000; + pinfo->bl_max = 4; + pinfo->bl_min = 1; + + pinfo->lcdc.h_back_porch = 84; + pinfo->lcdc.h_front_porch = 33; + pinfo->lcdc.h_pulse_width = 60; + pinfo->lcdc.v_back_porch = 0; + pinfo->lcdc.v_front_porch = 2; + 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) + platform_driver_unregister(&this_driver); + + return ret; +} + +module_init(lcdc_gordon_panel_init); |