[9610] fbdev: dpu20: updated panel backlight driver

Change-Id: I4d48dd221a538f6f51a931fa810945b0e738b924
Signed-off-by: ChiHun Won <chihun.won@samsung.com>

diff --git a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_lcd_ctrl.c b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_lcd_ctrl.c
index 3bb2a7afc778088f5d9a83a75a3331709f12b5df..444338ea6d89e7d2291f51bbd99820ce9685f933 100644 (file)
--- a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_lcd_ctrl.c
+++ b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_lcd_ctrl.c
@@ -157,6 +157,11 @@ void lcd_init(int id, struct decon_lcd *lcd)
                dsim_err("fail to send SEQ_TEST_KEY_ON_C0 command.\n");
        mdelay(12);
 
+       if (dsim_wr_data(id, MIPI_DSI_DCS_LONG_WRITE, (unsigned long)SEQ_B_CTRL_ON,
+                               ARRAY_SIZE(SEQ_B_CTRL_ON)) < 0)
+               dsim_err("fail to send SEQ_B_CTRL_ON command.\n");
+       mdelay(12);
+
        if (lcd->mode == DECON_MIPI_COMMAND_MODE) {
                if (dsim_wr_data(id, MIPI_DSI_DCS_SHORT_WRITE, SEQ_TE_ON[0], 0) < 0)
                        dsim_err("fail to send SEQ_TE_ON command.\n");

diff --git a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_mipi_lcd.c b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_mipi_lcd.c
index 96c445c77f09e4cd09b6508442124fcf164d422a..0ff37a6990cdc3238e09c648795611a028bef643 100644 (file)
--- a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_mipi_lcd.c
+++ b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_mipi_lcd.c
@@ -29,6 +29,9 @@
 #define DEFAULT_BRIGHTNESS     170
 #define CMD_SIZE               34
 
+unsigned char set_brightness[2] = {0x51, 0x7F};
+int backlightlevel_log;
+
 static int s6e3fa0_get_brightness(struct backlight_device *bd)
 {
        return bd->props.brightness;
@@ -42,89 +45,116 @@ static int get_backlight_level(int brightness)
        case 0:
                backlightlevel = 0;
                break;
-       case 1 ... 29:
-               backlightlevel = 0;
+       case 1 ... 10:
+               backlightlevel = 10;
                break;
-       case 30 ... 34:
-               backlightlevel = 1;
+       case 11 ... 15:
+               backlightlevel = 55;
                break;
-       case 35 ... 39:
-               backlightlevel = 2;
+       case 16 ... 20:
+               backlightlevel = 95;
                break;
-       case 40 ... 44:
-               backlightlevel = 3;
+       case 21 ... 25:
+               backlightlevel = 125;
                break;
-       case 45 ... 49:
-               backlightlevel = 4;
+       case 26 ... 30:
+               backlightlevel = 160;
                break;
-       case 50 ... 54:
-               backlightlevel = 5;
+       case 31 ... 35:
+               backlightlevel = 165;
                break;
-       case 55 ... 64:
-               backlightlevel = 6;
+       case 36 ... 40:
+               backlightlevel = 165;
                break;
-       case 65 ... 74:
-               backlightlevel = 7;
+       case 41 ... 45:
+               backlightlevel = 170;
                break;
-       case 75 ... 83:
-               backlightlevel = 8;
+       case 46 ... 50:
+               backlightlevel = 170;
                break;
-       case 84 ... 93:
-               backlightlevel = 9;
+       case 51 ... 55:
+               backlightlevel = 175;
                break;
-       case 94 ... 103:
-               backlightlevel = 10;
+       case 56 ... 60:
+               backlightlevel = 175;
+               break;
+       case 61 ... 65:
+               backlightlevel = 180;
+               break;
+       case 66 ... 70:
+               backlightlevel = 180;
+               break;
+       case 71 ... 75:
+               backlightlevel = 185;
+               break;
+       case 76 ... 80:
+               backlightlevel = 185;
+               break;
+       case 81 ... 85:
+               backlightlevel = 190;
+               break;
+       case 86 ... 90:
+               backlightlevel = 190;
                break;
-       case 104 ... 113:
-               backlightlevel = 11;
+       case 91 ... 95:
+               backlightlevel = 195;
                break;
-       case 114 ... 122:
-               backlightlevel = 12;
+       case 96 ... 100:
+               backlightlevel = 195;
                break;
-       case 123 ... 132:
-               backlightlevel = 13;
+       case 101 ... 105:
+               backlightlevel = 200;
                break;
-       case 133 ... 142:
-               backlightlevel = 14;
+       case 106 ... 110:
+               backlightlevel = 210;
                break;
-       case 143 ... 152:
-               backlightlevel = 15;
+       case 111 ... 115:
+               backlightlevel = 225;
                break;
-       case 153 ... 162:
-               backlightlevel = 16;
+       case 116 ... 120:
+               backlightlevel = 230;
                break;
-       case 163 ... 171:
-               backlightlevel = 17;
+       case 121 ... 125:
+               backlightlevel = 230;
                break;
-       case 172 ... 181:
-               backlightlevel = 18;
+       case 126 ... 130:
+               backlightlevel = 235;
                break;
-       case 182 ... 191:
-               backlightlevel = 19;
+       case 131 ... 135:
+               backlightlevel = 235;
                break;
-       case 192 ... 201:
-               backlightlevel = 20;
+       case 136 ... 140:
+               backlightlevel = 240;
                break;
-       case 202 ... 210:
-               backlightlevel = 21;
+       case 141 ... 145:
+               backlightlevel = 240;
                break;
-       case 211 ... 220:
-               backlightlevel = 22;
+       case 146 ... 150:
+               backlightlevel = 245;
                break;
-       case 221 ... 230:
-               backlightlevel = 23;
+       case 151 ... 155:
+               backlightlevel = 245;
                break;
-       case 231 ... 240:
-               backlightlevel = 24;
+       case 156 ... 160:
+               backlightlevel = 250;
                break;
-       case 241 ... 250:
-               backlightlevel = 25;
+       case 161 ... 165:
+               backlightlevel = 253;
                break;
-       case 251 ... 255:
-               backlightlevel = 26;
+       case 166 ... 170:
+               backlightlevel = 253;
+               break;
+       case 171 ... 175:
+               backlightlevel = 254;
+               break;
+       case 176 ... 180:
+               backlightlevel = 254;
+               break;
+       case 181 ... 255:
+               backlightlevel = 255;
                break;
        default:
-               backlightlevel = 12;
+               backlightlevel = 127;
                break;
        }
 
@@ -135,53 +165,25 @@ static int update_brightness(struct dsim_device *dsim, int brightness)
 {
        int backlightlevel;
 
-       /* unused line */
        backlightlevel = get_backlight_level(brightness);
-#if 0
-       int real_br = brightness / 2;
-       int id = dsim->id;
-       unsigned char gamma_control[CMD_SIZE];
-       unsigned char gamma_update[3];
-
-       memcpy(gamma_control, SEQ_GAMMA_CONTROL_SET_300CD, CMD_SIZE);
-       memcpy(gamma_update, SEQ_GAMMA_UPDATE, 3);
-
-       /*
-        * In order to change brightness to be set to one of values in the
-        * gamma_control parameter. Brightness value(real_br) from 0 to 255.
-        * This value is controlled by the control bar.
-        */
-
-       if (brightness < 70)
-               real_br = 35;
-
-       gamma_control[1] = 0;
-       gamma_control[3] = 0;
-       gamma_control[5] = 0;
-
-       gamma_control[2] = real_br * 2;
-       gamma_control[4] = real_br * 2;
-       gamma_control[6] = real_br * 2;
-
-       gamma_control[28] = real_br;
-       gamma_control[29] = real_br;
-       gamma_control[30] = real_br;
-
-       /* It updates the changed brightness value to ddi */
-       gamma_update[1] = 0x01;
-
-       if (dsim_wr_data(id, MIPI_DSI_DCS_LONG_WRITE, (unsigned long)gamma_control,
-                               ARRAY_SIZE(gamma_control)) < 0)
-               dsim_err("fail to send gamma_control command.\n");
-
-       if (dsim_wr_data(id, MIPI_DSI_DCS_LONG_WRITE, (unsigned long)SEQ_GAMMA_UPDATE,
-                               ARRAY_SIZE(SEQ_GAMMA_UPDATE)) < 0)
-               dsim_err("fail to send SEQ_GAMMA_UPDATE command.\n");
-
-       if (dsim_wr_data(id, MIPI_DSI_DCS_LONG_WRITE, (unsigned long)gamma_update,
-                               ARRAY_SIZE(gamma_update)) < 0)
-               dsim_err("fail to send gamma_update command.\n");
-#endif
+
+       set_brightness[1] = backlightlevel;
+
+       if (backlightlevel_log != backlightlevel)
+               pr_info("brightness: %d -> %d\n", brightness, backlightlevel);
+
+       backlightlevel_log = backlightlevel;
+
+       if (brightness >= 0) {
+               /* DO update brightness using dsim_wr_data */
+               dsim_wr_data(0, MIPI_DSI_DCS_LONG_WRITE,
+                               (unsigned long)set_brightness, 2);
+       } else {
+               /* DO update brightness using dsim_wr_data */
+               /* backlight_off ??? */
+               return -EINVAL;
+       }
+
        return 0;
 }
 
@@ -189,12 +191,8 @@ static int s6e3fa0_set_brightness(struct backlight_device *bd)
 {
        struct dsim_device *dsim;
        int brightness = bd->props.brightness;
-#if 0
-       struct v4l2_subdev *sd;
 
-       sd = dev_get_drvdata(bd->dev.parent);
-       dsim = container_of(sd, struct dsim_device, sd);
-#endif
+       dsim = get_dsim_drvdata(0);
 
        if (brightness < MIN_BRIGHTNESS || brightness > MAX_BRIGHTNESS) {
                printk(KERN_ALERT "Brightness should be in the range of 0 ~ 255\n");
@@ -212,7 +210,7 @@ static const struct backlight_ops s6e3fa0_backlight_ops = {
 
 static int s6e3fa0_probe(struct dsim_device *dsim)
 {
-       dsim->bd = backlight_device_register("panel", dsim->dev,
+       dsim->bd = backlight_device_register("backlight_0", dsim->dev,
                NULL, &s6e3fa0_backlight_ops, NULL);
        if (IS_ERR(dsim->bd))
                printk(KERN_ALERT "failed to register backlight device!\n");

diff --git a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_param.h b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_param.h
index a399e6b6bcfafaeba6a80cbc9f3d40a4d2398c16..baf8453d0d036311439368f3410eae44fba6f818 100644 (file)
--- a/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_param.h
+++ b/drivers/video/fbdev/exynos/dpu20/panels/s6e3fa0_param.h
@@ -102,6 +102,11 @@ static const unsigned char SEQ_GAMMA_UPDATE[] = {
        0x03, 0x00
 };
 
+static const unsigned char SEQ_B_CTRL_ON[] = {
+       0x53,
+       0x20,
+};
+
 static const unsigned char SEQ_SLEEP_OUT[] = {
        0x11,
 };