--- /dev/null
+/*
+ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. 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 as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * 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/types.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/console.h>
+#include <linux/io.h>
+#include <linux/bitops.h>
+#include <linux/spinlock.h>
+#include <linux/mxcfb.h>
+#include <linux/backlight.h>
+#include <video/mipi_display.h>
+
+#include "mipi_dsi.h"
+
+#define MIPI_DSI_MAX_RET_PACK_SIZE (0x4)
+
+#define HX8369BL_MAX_BRIGHT (255)
+#define HX8369BL_DEF_BRIGHT (255)
+
+#define HX8369_MAX_DPHY_CLK (800)
+#define HX8369_ONE_DATA_LANE (0x1)
+#define HX8369_TWO_DATA_LANE (0x2)
+
+#define HX8369_CMD_SETEXTC (0xB9)
+#define HX8369_CMD_SETEXTC_LEN (0x4)
+#define HX8369_CMD_SETEXTC_PARAM_1 (0x6983ff)
+
+#define HX8369_CMD_GETHXID (0xF4)
+#define HX8369_CMD_GETHXID_LEN (0x4)
+#define HX8369_ID (0x69)
+#define HX8369_ID_MASK (0xFF)
+
+#define HX8369_CMD_SETDISP (0xB2)
+#define HX8369_CMD_SETDISP_LEN (16)
+#define HX8369_CMD_SETDISP_1_HALT (0x00)
+#define HX8369_CMD_SETDISP_2_RES_MODE (0x23)
+#define HX8369_CMD_SETDISP_3_BP (0x03)
+#define HX8369_CMD_SETDISP_4_FP (0x03)
+#define HX8369_CMD_SETDISP_5_SAP (0x70)
+#define HX8369_CMD_SETDISP_6_GENON (0x00)
+#define HX8369_CMD_SETDISP_7_GENOFF (0xff)
+#define HX8369_CMD_SETDISP_8_RTN (0x00)
+#define HX8369_CMD_SETDISP_9_TEI (0x00)
+#define HX8369_CMD_SETDISP_10_TEP_UP (0x00)
+#define HX8369_CMD_SETDISP_11_TEP_LOW (0x00)
+#define HX8369_CMD_SETDISP_12_BP_PE (0x03)
+#define HX8369_CMD_SETDISP_13_FP_PE (0x03)
+#define HX8369_CMD_SETDISP_14_RTN_PE (0x00)
+#define HX8369_CMD_SETDISP_15_GON (0x01)
+
+#define HX8369_CMD_SETCYC (0xB4)
+#define HX8369_CMD_SETCYC_LEN (6)
+#define HX8369_CMD_SETCYC_PARAM_1 (0x5f1d00)
+#define HX8369_CMD_SETCYC_PARAM_2 (0x060e)
+
+#define HX8369_CMD_SETGIP (0xD5)
+#define HX8369_CMD_SETGIP_LEN (27)
+#define HX8369_CMD_SETGIP_PARAM_1 (0x030400)
+#define HX8369_CMD_SETGIP_PARAM_2 (0x1c050100)
+#define HX8369_CMD_SETGIP_PARAM_3 (0x00030170)
+#define HX8369_CMD_SETGIP_PARAM_4 (0x51064000)
+#define HX8369_CMD_SETGIP_PARAM_5 (0x41000007)
+#define HX8369_CMD_SETGIP_PARAM_6 (0x07075006)
+#define HX8369_CMD_SETGIP_PARAM_7 (0x040f)
+
+#define HX8369_CMD_SETPOWER (0xB1)
+#define HX8369_CMD_SETPOWER_LEN (20)
+#define HX8369_CMD_SETPOWER_PARAM_1 (0x340001)
+#define HX8369_CMD_SETPOWER_PARAM_2 (0x0f0f0006)
+#define HX8369_CMD_SETPOWER_PARAM_3 (0x3f3f322a)
+#define HX8369_CMD_SETPOWER_PARAM_4 (0xe6013a07)
+#define HX8369_CMD_SETPOWER_PARAM_5 (0xe6e6e6e6)
+
+#define HX8369_CMD_SETVCOM (0xB6)
+#define HX8369_CMD_SETVCOM_LEN (3)
+#define HX8369_CMD_SETVCOM_PARAM_1 (0x5656)
+
+#define HX8369_CMD_SETPANEL (0xCC)
+#define HX8369_CMD_SETPANEL_PARAM_1 (0x02)
+
+#define HX8369_CMD_SETGAMMA (0xE0)
+#define HX8369_CMD_SETGAMMA_LEN (35)
+#define HX8369_CMD_SETGAMMA_PARAM_1 (0x221d00)
+#define HX8369_CMD_SETGAMMA_PARAM_2 (0x2e3f3d38)
+#define HX8369_CMD_SETGAMMA_PARAM_3 (0x0f0d064a)
+#define HX8369_CMD_SETGAMMA_PARAM_4 (0x16131513)
+#define HX8369_CMD_SETGAMMA_PARAM_5 (0x1d001910)
+#define HX8369_CMD_SETGAMMA_PARAM_6 (0x3f3d3822)
+#define HX8369_CMD_SETGAMMA_PARAM_7 (0x0d064a2e)
+#define HX8369_CMD_SETGAMMA_PARAM_8 (0x1315130f)
+#define HX8369_CMD_SETGAMMA_PARAM_9 (0x191016)
+
+#define HX8369_CMD_SETMIPI (0xBA)
+#define HX8369_CMD_SETMIPI_LEN (14)
+#define HX8369_CMD_SETMIPI_PARAM_1 (0xc6a000)
+#define HX8369_CMD_SETMIPI_PARAM_2 (0x10000a00)
+#define HX8369_CMD_SETMIPI_ONELANE (0x10 << 24)
+#define HX8369_CMD_SETMIPI_TWOLANE (0x11 << 24)
+#define HX8369_CMD_SETMIPI_PARAM_3 (0x00026f30)
+#define HX8369_CMD_SETMIPI_PARAM_4 (0x4018)
+
+#define HX8369_CMD_SETPIXEL_FMT (0x3A)
+#define HX8369_CMD_SETPIXEL_FMT_24BPP (0x77)
+#define HX8369_CMD_SETPIXEL_FMT_18BPP (0x66)
+#define HX8369_CMD_SETPIXEL_FMT_16BPP (0x55)
+
+#define HX8369_CMD_SETCLUMN_ADDR (0x2A)
+#define HX8369_CMD_SETCLUMN_ADDR_LEN (5)
+#define HX8369_CMD_SETCLUMN_ADDR_PARAM_1 (0xdf0000)
+#define HX8369_CMD_SETCLUMN_ADDR_PARAM_2 (0x01)
+
+#define HX8369_CMD_SETPAGE_ADDR (0x2B)
+#define HX8369_CMD_SETPAGE_ADDR_LEN (5)
+#define HX8369_CMD_SETPAGE_ADDR_PARAM_1 (0x1f0000)
+#define HX8369_CMD_SETPAGE_ADDR_PARAM_2 (0x03)
+
+#define HX8369_CMD_WRT_DISP_BRIGHT (0x51)
+#define HX8369_CMD_WRT_DISP_BRIGHT_PARAM_1 (0xFF)
+
+#define HX8369_CMD_WRT_CABC_MIN_BRIGHT (0x5E)
+#define HX8369_CMD_WRT_CABC_MIN_BRIGHT_PARAM_1 (0x20)
+
+#define HX8369_CMD_WRT_CABC_CTRL (0x55)
+#define HX8369_CMD_WRT_CABC_CTRL_PARAM_1 (0x1)
+
+#define HX8369_CMD_WRT_CTRL_DISP (0x53)
+#define HX8369_CMD_WRT_CTRL_DISP_PARAM_1 (0x24)
+
+#define CHECK_RETCODE(ret) \
+do { \
+ if (ret < 0) { \
+ dev_err(&mipi_dsi->pdev->dev, \
+ "%s ERR: ret:%d, line:%d.\n", \
+ __func__, ret, __LINE__); \
+ return ret; \
+ } \
+} while (0)
+
+static int hx8369bl_brightness;
+static int mipid_init_backlight(struct mipi_dsi_info *mipi_dsi);
+
+static struct fb_videomode truly_lcd_modedb[] = {
+ {
+ "TRULY-WVGA", 64, 480, 800, 37880,
+ 8, 8,
+ 6, 6,
+ 8, 6,
+ FB_SYNC_OE_LOW_ACT,
+ FB_VMODE_NONINTERLACED,
+ 0,
+ },
+};
+
+static struct mipi_lcd_config lcd_config = {
+ .virtual_ch = 0x0,
+ .data_lane_num = HX8369_TWO_DATA_LANE,
+ .max_phy_clk = HX8369_MAX_DPHY_CLK,
+ .dpi_fmt = MIPI_RGB888,
+};
+void mipid_hx8369_get_lcd_videomode(struct fb_videomode **mode, int *size,
+ struct mipi_lcd_config **data)
+{
+ *mode = &truly_lcd_modedb[0];
+ *size = ARRAY_SIZE(truly_lcd_modedb);
+ *data = &lcd_config;
+}
+
+int mipid_hx8369_lcd_setup(struct mipi_dsi_info *mipi_dsi)
+{
+ u32 buf[DSI_CMD_BUF_MAXSIZE];
+ int err;
+
+ dev_dbg(&mipi_dsi->pdev->dev, "MIPI DSI LCD setup.\n");
+ buf[0] = HX8369_CMD_SETEXTC | (HX8369_CMD_SETEXTC_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE,
+ buf, HX8369_CMD_SETEXTC_LEN);
+ CHECK_RETCODE(err);
+ buf[0] = MIPI_DSI_MAX_RET_PACK_SIZE;
+ err = mipi_dsi_pkt_write(mipi_dsi,
+ MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
+ buf, 0);
+ CHECK_RETCODE(err);
+ buf[0] = HX8369_CMD_GETHXID;
+ err = mipi_dsi_pkt_read(mipi_dsi,
+ MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM,
+ buf, HX8369_CMD_GETHXID_LEN);
+ if (!err && ((buf[0] & HX8369_ID_MASK) == HX8369_ID)) {
+ dev_info(&mipi_dsi->pdev->dev,
+ "MIPI DSI LCD ID:0x%x.\n", buf[0]);
+ } else {
+ dev_err(&mipi_dsi->pdev->dev,
+ "mipi_dsi_pkt_read err:%d, data:0x%x.\n",
+ err, buf[0]);
+ dev_info(&mipi_dsi->pdev->dev,
+ "MIPI DSI LCD not detected!\n");
+ return err;
+ }
+
+ /* set LCD resolution as 480RGBx800, DPI interface,
+ * display operation mode: RGB data bypass GRAM mode.
+ */
+ buf[0] = HX8369_CMD_SETDISP | (HX8369_CMD_SETDISP_1_HALT << 8) |
+ (HX8369_CMD_SETDISP_2_RES_MODE << 16) |
+ (HX8369_CMD_SETDISP_3_BP << 24);
+ buf[1] = HX8369_CMD_SETDISP_4_FP | (HX8369_CMD_SETDISP_5_SAP << 8) |
+ (HX8369_CMD_SETDISP_6_GENON << 16) |
+ (HX8369_CMD_SETDISP_7_GENOFF << 24);
+ buf[2] = HX8369_CMD_SETDISP_8_RTN | (HX8369_CMD_SETDISP_9_TEI << 8) |
+ (HX8369_CMD_SETDISP_10_TEP_UP << 16) |
+ (HX8369_CMD_SETDISP_11_TEP_LOW << 24);
+ buf[3] = HX8369_CMD_SETDISP_12_BP_PE |
+ (HX8369_CMD_SETDISP_13_FP_PE << 8) |
+ (HX8369_CMD_SETDISP_14_RTN_PE << 16) |
+ (HX8369_CMD_SETDISP_15_GON << 24);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE,
+ buf, HX8369_CMD_SETDISP_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set display waveform cycle */
+ buf[0] = HX8369_CMD_SETCYC | (HX8369_CMD_SETCYC_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETCYC_PARAM_2;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE,
+ buf, HX8369_CMD_SETCYC_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set GIP timing output control */
+ buf[0] = HX8369_CMD_SETGIP | (HX8369_CMD_SETGIP_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETGIP_PARAM_2;
+ buf[2] = HX8369_CMD_SETGIP_PARAM_3;
+ buf[3] = HX8369_CMD_SETGIP_PARAM_4;
+ buf[4] = HX8369_CMD_SETGIP_PARAM_5;
+ buf[5] = HX8369_CMD_SETGIP_PARAM_6;
+ buf[6] = HX8369_CMD_SETGIP_PARAM_7;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE, buf,
+ HX8369_CMD_SETGIP_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set power: standby, DC etc. */
+ buf[0] = HX8369_CMD_SETPOWER | (HX8369_CMD_SETPOWER_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETPOWER_PARAM_2;
+ buf[2] = HX8369_CMD_SETPOWER_PARAM_3;
+ buf[3] = HX8369_CMD_SETPOWER_PARAM_4;
+ buf[4] = HX8369_CMD_SETPOWER_PARAM_5;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE, buf,
+ HX8369_CMD_SETPOWER_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set VCOM voltage. */
+ buf[0] = HX8369_CMD_SETVCOM | (HX8369_CMD_SETVCOM_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE, buf,
+ HX8369_CMD_SETVCOM_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set Panel: BGR/RGB or Inversion. */
+ buf[0] = HX8369_CMD_SETPANEL | (HX8369_CMD_SETPANEL_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi,
+ MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM, buf, 0);
+ CHECK_RETCODE(err);
+
+ /* Set gamma curve related setting */
+ buf[0] = HX8369_CMD_SETGAMMA | (HX8369_CMD_SETGAMMA_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETGAMMA_PARAM_2;
+ buf[2] = HX8369_CMD_SETGAMMA_PARAM_3;
+ buf[3] = HX8369_CMD_SETGAMMA_PARAM_4;
+ buf[4] = HX8369_CMD_SETGAMMA_PARAM_5;
+ buf[5] = HX8369_CMD_SETGAMMA_PARAM_6;
+ buf[7] = HX8369_CMD_SETGAMMA_PARAM_7;
+ buf[7] = HX8369_CMD_SETGAMMA_PARAM_8;
+ buf[8] = HX8369_CMD_SETGAMMA_PARAM_9;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE, buf,
+ HX8369_CMD_SETGAMMA_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set MIPI: DPHYCMD & DSICMD, data lane number */
+ buf[0] = HX8369_CMD_SETMIPI | (HX8369_CMD_SETMIPI_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETMIPI_PARAM_2;
+ buf[2] = HX8369_CMD_SETMIPI_PARAM_3;
+ if (lcd_config.data_lane_num == HX8369_ONE_DATA_LANE)
+ buf[2] |= HX8369_CMD_SETMIPI_ONELANE;
+ else
+ buf[2] |= HX8369_CMD_SETMIPI_TWOLANE;
+ buf[3] = HX8369_CMD_SETMIPI_PARAM_4;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE, buf,
+ HX8369_CMD_SETMIPI_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set pixel format:24bpp */
+ buf[0] = HX8369_CMD_SETPIXEL_FMT;
+ switch (lcd_config.dpi_fmt) {
+ case MIPI_RGB565_PACKED:
+ case MIPI_RGB565_LOOSELY:
+ case MIPI_RGB565_CONFIG3:
+ buf[0] |= (HX8369_CMD_SETPIXEL_FMT_16BPP << 8);
+ break;
+
+ case MIPI_RGB666_LOOSELY:
+ case MIPI_RGB666_PACKED:
+ buf[0] |= (HX8369_CMD_SETPIXEL_FMT_18BPP << 8);
+ break;
+
+ case MIPI_RGB888:
+ buf[0] |= (HX8369_CMD_SETPIXEL_FMT_24BPP << 8);
+ break;
+
+ default:
+ buf[0] |= (HX8369_CMD_SETPIXEL_FMT_24BPP << 8);
+ break;
+ }
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+
+ /* Set column address: 0~479 */
+ buf[0] = HX8369_CMD_SETCLUMN_ADDR |
+ (HX8369_CMD_SETCLUMN_ADDR_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETCLUMN_ADDR_PARAM_2;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE,
+ buf, HX8369_CMD_SETCLUMN_ADDR_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set page address: 0~799 */
+ buf[0] = HX8369_CMD_SETPAGE_ADDR |
+ (HX8369_CMD_SETPAGE_ADDR_PARAM_1 << 8);
+ buf[1] = HX8369_CMD_SETPAGE_ADDR_PARAM_2;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_LONG_WRITE,
+ buf, HX8369_CMD_SETPAGE_ADDR_LEN);
+ CHECK_RETCODE(err);
+
+ /* Set display brightness related */
+ buf[0] = HX8369_CMD_WRT_DISP_BRIGHT |
+ (HX8369_CMD_WRT_DISP_BRIGHT_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+
+ buf[0] = HX8369_CMD_WRT_CABC_CTRL |
+ (HX8369_CMD_WRT_CABC_CTRL_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+
+ buf[0] = HX8369_CMD_WRT_CTRL_DISP |
+ (HX8369_CMD_WRT_CTRL_DISP_PARAM_1 << 8);
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+
+ /* exit sleep mode and set display on */
+ buf[0] = MIPI_DCS_EXIT_SLEEP_MODE;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+ /* To allow time for the supply voltages
+ * and clock circuits to stabilize.
+ */
+ msleep(5);
+ buf[0] = MIPI_DCS_SET_DISPLAY_ON;
+ err = mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM,
+ buf, 0);
+ CHECK_RETCODE(err);
+
+ err = mipid_init_backlight(mipi_dsi);
+ return err;
+}
+
+static int mipid_bl_update_status(struct backlight_device *bl)
+{
+ u32 buf;
+ int brightness = bl->props.brightness;
+ struct mipi_dsi_info *mipi_dsi = bl_get_data(bl);
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK)
+ brightness = 0;
+
+ buf = HX8369_CMD_WRT_DISP_BRIGHT |
+ ((brightness & HX8369BL_MAX_BRIGHT) << 8);
+ mipi_dsi_pkt_write(mipi_dsi, MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM,
+ &buf, 0);
+
+ hx8369bl_brightness = brightness & HX8369BL_MAX_BRIGHT;
+
+ dev_dbg(&bl->dev, "mipid backlight bringtness:%d.\n", brightness);
+ return 0;
+}
+
+static int mipid_bl_get_brightness(struct backlight_device *bl)
+{
+ return hx8369bl_brightness;
+}
+
+static int mipi_bl_check_fb(struct backlight_device *bl, struct fb_info *fbi)
+{
+ return 0;
+}
+
+static const struct backlight_ops mipid_lcd_bl_ops = {
+ .update_status = mipid_bl_update_status,
+ .get_brightness = mipid_bl_get_brightness,
+ .check_fb = mipi_bl_check_fb,
+};
+
+static int mipid_init_backlight(struct mipi_dsi_info *mipi_dsi)
+{
+ struct backlight_properties props;
+ struct backlight_device *bl;
+
+ if (mipi_dsi->bl) {
+ pr_debug("mipid backlight already init!\n");
+ return 0;
+ }
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = HX8369BL_MAX_BRIGHT;
+ props.type = BACKLIGHT_RAW;
+ bl = backlight_device_register("mipid-bl", &mipi_dsi->pdev->dev,
+ mipi_dsi, &mipid_lcd_bl_ops, &props);
+ if (IS_ERR(bl)) {
+ pr_err("error %ld on backlight register\n", PTR_ERR(bl));
+ return PTR_ERR(bl);
+ }
+ mipi_dsi->bl = bl;
+ bl->props.power = FB_BLANK_UNBLANK;
+ bl->props.fb_blank = FB_BLANK_UNBLANK;
+ bl->props.brightness = HX8369BL_DEF_BRIGHT;
+
+ mipid_bl_update_status(bl);
+ return 0;
+}
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