video: add nexell video driver (display/video driver)
Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01:
- nexell_display.c: Changed to DM, CONFIG_FB_ADDR can not be used
anymore because framebuffer is allocated by video_reserve() in
video-uclass.c. Therefore code changed appropriately.
- '#ifdef CONFIG...' changed to 'if (IS_ENABLED(CONFIG...))' where
possible (and similar).
- livetree API (dev_read_...) is used instead of fdt one (fdt...).
Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
diff --git a/drivers/video/nexell_display.c b/drivers/video/nexell_display.c
new file mode 100644
index 0000000..4101e09
--- /dev/null
+++ b/drivers/video/nexell_display.c
@@ -0,0 +1,651 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Nexell Co., Ltd.
+ *
+ * Author: junghyun, kim <jhkim@nexell.co.kr>
+ *
+ * Copyright (C) 2020 Stefan Bosch <stefan_b@posteo.net>
+ */
+
+#include <config.h>
+#include <common.h>
+#include <command.h>
+#include <dm.h>
+#include <mapmem.h>
+#include <malloc.h>
+#include <linux/compat.h>
+#include <linux/err.h>
+#include <video.h> /* For struct video_uc_platdata */
+#include <video_fb.h>
+#include <lcd.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/display.h>
+#include <asm/arch/display_dev.h>
+#include "videomodes.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if !defined(CONFIG_DM) && !defined(CONFIG_OF_CONTROL)
+static struct nx_display_dev *dp_dev;
+#endif
+
+static char *const dp_dev_str[] = {
+ [DP_DEVICE_RESCONV] = "RESCONV",
+ [DP_DEVICE_RGBLCD] = "LCD",
+ [DP_DEVICE_HDMI] = "HDMI",
+ [DP_DEVICE_MIPI] = "MiPi",
+ [DP_DEVICE_LVDS] = "LVDS",
+ [DP_DEVICE_CVBS] = "TVOUT",
+ [DP_DEVICE_DP0] = "DP0",
+ [DP_DEVICE_DP1] = "DP1",
+};
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+static void nx_display_parse_dp_sync(ofnode node, struct dp_sync_info *sync)
+{
+ sync->h_active_len = ofnode_read_s32_default(node, "h_active_len", 0);
+ sync->h_sync_width = ofnode_read_s32_default(node, "h_sync_width", 0);
+ sync->h_back_porch = ofnode_read_s32_default(node, "h_back_porch", 0);
+ sync->h_front_porch = ofnode_read_s32_default(node, "h_front_porch", 0);
+ sync->h_sync_invert = ofnode_read_s32_default(node, "h_sync_invert", 0);
+ sync->v_active_len = ofnode_read_s32_default(node, "v_active_len", 0);
+ sync->v_sync_width = ofnode_read_s32_default(node, "v_sync_width", 0);
+ sync->v_back_porch = ofnode_read_s32_default(node, "v_back_porch", 0);
+ sync->v_front_porch = ofnode_read_s32_default(node, "v_front_porch", 0);
+ sync->v_sync_invert = ofnode_read_s32_default(node, "v_sync_invert", 0);
+ sync->pixel_clock_hz = ofnode_read_s32_default(node, "pixel_clock_hz", 0);
+
+ debug("DP: sync ->\n");
+ debug("ha:%d, hs:%d, hb:%d, hf:%d, hi:%d\n",
+ sync->h_active_len, sync->h_sync_width,
+ sync->h_back_porch, sync->h_front_porch, sync->h_sync_invert);
+ debug("va:%d, vs:%d, vb:%d, vf:%d, vi:%d\n",
+ sync->v_active_len, sync->v_sync_width,
+ sync->v_back_porch, sync->v_front_porch, sync->v_sync_invert);
+}
+
+static void nx_display_parse_dp_ctrl(ofnode node, struct dp_ctrl_info *ctrl)
+{
+ /* clock gen */
+ ctrl->clk_src_lv0 = ofnode_read_s32_default(node, "clk_src_lv0", 0);
+ ctrl->clk_div_lv0 = ofnode_read_s32_default(node, "clk_div_lv0", 0);
+ ctrl->clk_src_lv1 = ofnode_read_s32_default(node, "clk_src_lv1", 0);
+ ctrl->clk_div_lv1 = ofnode_read_s32_default(node, "clk_div_lv1", 0);
+
+ /* scan format */
+ ctrl->interlace = ofnode_read_s32_default(node, "interlace", 0);
+
+ /* syncgen format */
+ ctrl->out_format = ofnode_read_s32_default(node, "out_format", 0);
+ ctrl->invert_field = ofnode_read_s32_default(node, "invert_field", 0);
+ ctrl->swap_RB = ofnode_read_s32_default(node, "swap_RB", 0);
+ ctrl->yc_order = ofnode_read_s32_default(node, "yc_order", 0);
+
+ /* extern sync delay */
+ ctrl->delay_mask = ofnode_read_s32_default(node, "delay_mask", 0);
+ ctrl->d_rgb_pvd = ofnode_read_s32_default(node, "d_rgb_pvd", 0);
+ ctrl->d_hsync_cp1 = ofnode_read_s32_default(node, "d_hsync_cp1", 0);
+ ctrl->d_vsync_fram = ofnode_read_s32_default(node, "d_vsync_fram", 0);
+ ctrl->d_de_cp2 = ofnode_read_s32_default(node, "d_de_cp2", 0);
+
+ /* extern sync delay */
+ ctrl->vs_start_offset =
+ ofnode_read_s32_default(node, "vs_start_offset", 0);
+ ctrl->vs_end_offset = ofnode_read_s32_default(node, "vs_end_offset", 0);
+ ctrl->ev_start_offset =
+ ofnode_read_s32_default(node, "ev_start_offset", 0);
+ ctrl->ev_end_offset = ofnode_read_s32_default(node, "ev_end_offset", 0);
+
+ /* pad clock seletor */
+ ctrl->vck_select = ofnode_read_s32_default(node, "vck_select", 0);
+ ctrl->clk_inv_lv0 = ofnode_read_s32_default(node, "clk_inv_lv0", 0);
+ ctrl->clk_delay_lv0 = ofnode_read_s32_default(node, "clk_delay_lv0", 0);
+ ctrl->clk_inv_lv1 = ofnode_read_s32_default(node, "clk_inv_lv1", 0);
+ ctrl->clk_delay_lv1 = ofnode_read_s32_default(node, "clk_delay_lv1", 0);
+ ctrl->clk_sel_div1 = ofnode_read_s32_default(node, "clk_sel_div1", 0);
+
+ debug("DP: ctrl [%s] ->\n",
+ ctrl->interlace ? "Interlace" : " Progressive");
+ debug("cs0:%d, cd0:%d, cs1:%d, cd1:%d\n",
+ ctrl->clk_src_lv0, ctrl->clk_div_lv0,
+ ctrl->clk_src_lv1, ctrl->clk_div_lv1);
+ debug("fmt:0x%x, inv:%d, swap:%d, yb:0x%x\n",
+ ctrl->out_format, ctrl->invert_field,
+ ctrl->swap_RB, ctrl->yc_order);
+ debug("dm:0x%x, drp:%d, dhs:%d, dvs:%d, dde:0x%x\n",
+ ctrl->delay_mask, ctrl->d_rgb_pvd,
+ ctrl->d_hsync_cp1, ctrl->d_vsync_fram, ctrl->d_de_cp2);
+ debug("vss:%d, vse:%d, evs:%d, eve:%d\n",
+ ctrl->vs_start_offset, ctrl->vs_end_offset,
+ ctrl->ev_start_offset, ctrl->ev_end_offset);
+ debug("sel:%d, i0:%d, d0:%d, i1:%d, d1:%d, s1:%d\n",
+ ctrl->vck_select, ctrl->clk_inv_lv0, ctrl->clk_delay_lv0,
+ ctrl->clk_inv_lv1, ctrl->clk_delay_lv1, ctrl->clk_sel_div1);
+}
+
+static void nx_display_parse_dp_top_layer(ofnode node, struct dp_plane_top *top)
+{
+ top->screen_width = ofnode_read_s32_default(node, "screen_width", 0);
+ top->screen_height = ofnode_read_s32_default(node, "screen_height", 0);
+ top->video_prior = ofnode_read_s32_default(node, "video_prior", 0);
+ top->interlace = ofnode_read_s32_default(node, "interlace", 0);
+ top->back_color = ofnode_read_s32_default(node, "back_color", 0);
+ top->plane_num = DP_PLANS_NUM;
+
+ debug("DP: top [%s] ->\n",
+ top->interlace ? "Interlace" : " Progressive");
+ debug("w:%d, h:%d, prior:%d, bg:0x%x\n",
+ top->screen_width, top->screen_height,
+ top->video_prior, top->back_color);
+}
+
+static void nx_display_parse_dp_layer(ofnode node, struct dp_plane_info *plane)
+{
+ plane->left = ofnode_read_s32_default(node, "left", 0);
+ plane->width = ofnode_read_s32_default(node, "width", 0);
+ plane->top = ofnode_read_s32_default(node, "top", 0);
+ plane->height = ofnode_read_s32_default(node, "height", 0);
+ plane->pixel_byte = ofnode_read_s32_default(node, "pixel_byte", 0);
+ plane->format = ofnode_read_s32_default(node, "format", 0);
+ plane->alpha_on = ofnode_read_s32_default(node, "alpha_on", 0);
+ plane->alpha_depth = ofnode_read_s32_default(node, "alpha", 0);
+ plane->tp_on = ofnode_read_s32_default(node, "tp_on", 0);
+ plane->tp_color = ofnode_read_s32_default(node, "tp_color", 0);
+
+ /* enable layer */
+ if (plane->fb_base)
+ plane->enable = 1;
+ else
+ plane->enable = 0;
+
+ if (plane->fb_base == 0) {
+ printf("fail : dp plane.%d invalid fb base [0x%x] ->\n",
+ plane->layer, plane->fb_base);
+ return;
+ }
+
+ debug("DP: plane.%d [0x%x] ->\n", plane->layer, plane->fb_base);
+ debug("f:0x%x, l:%d, t:%d, %d * %d, bpp:%d, a:%d(%d), t:%d(0x%x)\n",
+ plane->format, plane->left, plane->top, plane->width,
+ plane->height, plane->pixel_byte, plane->alpha_on,
+ plane->alpha_depth, plane->tp_on, plane->tp_color);
+}
+
+static void nx_display_parse_dp_planes(ofnode node,
+ struct nx_display_dev *dp,
+ struct video_uc_platdata *plat)
+{
+ const char *name;
+ ofnode subnode;
+
+ ofnode_for_each_subnode(subnode, node) {
+ name = ofnode_get_name(subnode);
+
+ if (strcmp(name, "layer_top") == 0)
+ nx_display_parse_dp_top_layer(subnode, &dp->top);
+
+ /*
+ * TODO: Is it sure that only one layer is used? Otherwise
+ * fb_base must be different?
+ */
+ if (strcmp(name, "layer_0") == 0) {
+ dp->planes[0].fb_base =
+ (uint)map_sysmem(plat->base, plat->size);
+ debug("%s(): dp->planes[0].fb_base == 0x%x\n", __func__,
+ (uint)dp->planes[0].fb_base);
+ nx_display_parse_dp_layer(subnode, &dp->planes[0]);
+ }
+
+ if (strcmp(name, "layer_1") == 0) {
+ dp->planes[1].fb_base =
+ (uint)map_sysmem(plat->base, plat->size);
+ debug("%s(): dp->planes[1].fb_base == 0x%x\n", __func__,
+ (uint)dp->planes[1].fb_base);
+ nx_display_parse_dp_layer(subnode, &dp->planes[1]);
+ }
+
+ if (strcmp(name, "layer_2") == 0) {
+ dp->planes[2].fb_base =
+ (uint)map_sysmem(plat->base, plat->size);
+ debug("%s(): dp->planes[2].fb_base == 0x%x\n", __func__,
+ (uint)dp->planes[2].fb_base);
+ nx_display_parse_dp_layer(subnode, &dp->planes[2]);
+ }
+ }
+}
+
+static int nx_display_parse_dp_lvds(ofnode node, struct nx_display_dev *dp)
+{
+ struct dp_lvds_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (!dev) {
+ printf("failed to allocate display LVDS object.\n");
+ return -ENOMEM;
+ }
+
+ dp->device = dev;
+
+ dev->lvds_format = ofnode_read_s32_default(node, "format", 0);
+ dev->pol_inv_hs = ofnode_read_s32_default(node, "pol_inv_hs", 0);
+ dev->pol_inv_vs = ofnode_read_s32_default(node, "pol_inv_vs", 0);
+ dev->pol_inv_de = ofnode_read_s32_default(node, "pol_inv_de", 0);
+ dev->pol_inv_ck = ofnode_read_s32_default(node, "pol_inv_ck", 0);
+ dev->voltage_level = ofnode_read_s32_default(node, "voltage_level", 0);
+
+ if (!dev->voltage_level)
+ dev->voltage_level = DEF_VOLTAGE_LEVEL;
+
+ debug("DP: LVDS -> %s, voltage LV:0x%x\n",
+ dev->lvds_format == DP_LVDS_FORMAT_VESA ? "VESA" :
+ dev->lvds_format == DP_LVDS_FORMAT_JEIDA ? "JEIDA" : "LOC",
+ dev->voltage_level);
+ debug("pol inv hs:%d, vs:%d, de:%d, ck:%d\n",
+ dev->pol_inv_hs, dev->pol_inv_vs,
+ dev->pol_inv_de, dev->pol_inv_ck);
+
+ return 0;
+}
+
+static int nx_display_parse_dp_rgb(ofnode node, struct nx_display_dev *dp)
+{
+ struct dp_rgb_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (!dev) {
+ printf("failed to allocate display RGB LCD object.\n");
+ return -ENOMEM;
+ }
+ dp->device = dev;
+
+ dev->lcd_mpu_type = ofnode_read_s32_default(node, "lcd_mpu_type", 0);
+
+ debug("DP: RGB -> MPU[%s]\n", dev->lcd_mpu_type ? "O" : "X");
+ return 0;
+}
+
+static int nx_display_parse_dp_mipi(ofnode node, struct nx_display_dev *dp)
+{
+ struct dp_mipi_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (!dev) {
+ printf("failed to allocate display MiPi object.\n");
+ return -ENOMEM;
+ }
+ dp->device = dev;
+
+ dev->lp_bitrate = ofnode_read_s32_default(node, "lp_bitrate", 0);
+ dev->hs_bitrate = ofnode_read_s32_default(node, "hs_bitrate", 0);
+ dev->lpm_trans = 1;
+ dev->command_mode = 0;
+
+ debug("DP: MIPI ->\n");
+ debug("lp:%dmhz, hs:%dmhz\n", dev->lp_bitrate, dev->hs_bitrate);
+
+ return 0;
+}
+
+static int nx_display_parse_dp_hdmi(ofnode node, struct nx_display_dev *dp)
+{
+ struct dp_hdmi_dev *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (!dev) {
+ printf("failed to allocate display HDMI object.\n");
+ return -ENOMEM;
+ }
+ dp->device = dev;
+
+ dev->preset = ofnode_read_s32_default(node, "preset", 0);
+
+ debug("DP: HDMI -> %d\n", dev->preset);
+
+ return 0;
+}
+
+static int nx_display_parse_dp_lcds(ofnode node, const char *type,
+ struct nx_display_dev *dp)
+{
+ if (strcmp(type, "lvds") == 0) {
+ dp->dev_type = DP_DEVICE_LVDS;
+ return nx_display_parse_dp_lvds(node, dp);
+ } else if (strcmp(type, "rgb") == 0) {
+ dp->dev_type = DP_DEVICE_RGBLCD;
+ return nx_display_parse_dp_rgb(node, dp);
+ } else if (strcmp(type, "mipi") == 0) {
+ dp->dev_type = DP_DEVICE_MIPI;
+ return nx_display_parse_dp_mipi(node, dp);
+ } else if (strcmp(type, "hdmi") == 0) {
+ dp->dev_type = DP_DEVICE_HDMI;
+ return nx_display_parse_dp_hdmi(node, dp);
+ }
+
+ printf("%s: node %s unknown display type\n", __func__,
+ ofnode_get_name(node));
+ return -EINVAL;
+
+ return 0;
+}
+
+#define DT_SYNC (1 << 0)
+#define DT_CTRL (1 << 1)
+#define DT_PLANES (1 << 2)
+#define DT_DEVICE (1 << 3)
+
+static int nx_display_parse_dt(struct udevice *dev,
+ struct nx_display_dev *dp,
+ struct video_uc_platdata *plat)
+{
+ const char *name, *dtype;
+ int ret = 0;
+ unsigned int dt_status = 0;
+ ofnode subnode;
+
+ if (!dev)
+ return -ENODEV;
+
+ dp->module = dev_read_s32_default(dev, "module", -1);
+ if (dp->module == -1)
+ dp->module = dev_read_s32_default(dev, "index", 0);
+
+ dtype = dev_read_string(dev, "lcd-type");
+
+ ofnode_for_each_subnode(subnode, dev_ofnode(dev)) {
+ name = ofnode_get_name(subnode);
+
+ if (strcmp("dp-sync", name) == 0) {
+ dt_status |= DT_SYNC;
+ nx_display_parse_dp_sync(subnode, &dp->sync);
+ }
+
+ if (strcmp("dp-ctrl", name) == 0) {
+ dt_status |= DT_CTRL;
+ nx_display_parse_dp_ctrl(subnode, &dp->ctrl);
+ }
+
+ if (strcmp("dp-planes", name) == 0) {
+ dt_status |= DT_PLANES;
+ nx_display_parse_dp_planes(subnode, dp, plat);
+ }
+
+ if (strcmp("dp-device", name) == 0) {
+ dt_status |= DT_DEVICE;
+ ret = nx_display_parse_dp_lcds(subnode, dtype, dp);
+ }
+ }
+
+ if (dt_status != (DT_SYNC | DT_CTRL | DT_PLANES | DT_DEVICE)) {
+ printf("Not enough DT config for display [0x%x]\n", dt_status);
+ return -ENODEV;
+ }
+
+ return ret;
+}
+#endif
+
+__weak int nx_display_fixup_dp(struct nx_display_dev *dp)
+{
+ return 0;
+}
+
+static struct nx_display_dev *nx_display_setup(void)
+{
+ struct nx_display_dev *dp;
+ int i, ret;
+ int node = 0;
+ struct video_uc_platdata *plat = NULL;
+
+ struct udevice *dev;
+
+ /* call driver probe */
+ debug("DT: uclass device call...\n");
+
+ ret = uclass_get_device(UCLASS_VIDEO, 0, &dev);
+ if (ret) {
+ debug("%s(): uclass_get_device(UCLASS_VIDEO, 0, &dev) != 0 --> return NULL\n",
+ __func__);
+ return NULL;
+ }
+ plat = dev_get_uclass_platdata(dev);
+ if (!dev) {
+ debug("%s(): dev_get_uclass_platdata(dev) == NULL --> return NULL\n",
+ __func__);
+ return NULL;
+ }
+ dp = dev_get_priv(dev);
+ if (!dp) {
+ debug("%s(): dev_get_priv(dev) == NULL --> return NULL\n",
+ __func__);
+ return NULL;
+ }
+ node = dev->node.of_offset;
+
+ if (CONFIG_IS_ENABLED(OF_CONTROL)) {
+ ret = nx_display_parse_dt(dev, dp, plat);
+ if (ret)
+ goto err_setup;
+ }
+
+ nx_display_fixup_dp(dp);
+
+ for (i = 0; dp->top.plane_num > i; i++) {
+ dp->planes[i].layer = i;
+ if (dp->planes[i].enable && !dp->fb_plane) {
+ dp->fb_plane = &dp->planes[i];
+ dp->fb_addr = dp->fb_plane->fb_base;
+ dp->depth = dp->fb_plane->pixel_byte;
+ }
+ }
+
+ switch (dp->dev_type) {
+#ifdef CONFIG_VIDEO_NX_RGB
+ case DP_DEVICE_RGBLCD:
+ nx_rgb_display(dp->module,
+ &dp->sync, &dp->ctrl, &dp->top,
+ dp->planes, (struct dp_rgb_dev *)dp->device);
+ break;
+#endif
+#ifdef CONFIG_VIDEO_NX_LVDS
+ case DP_DEVICE_LVDS:
+ nx_lvds_display(dp->module,
+ &dp->sync, &dp->ctrl, &dp->top,
+ dp->planes, (struct dp_lvds_dev *)dp->device);
+ break;
+#endif
+#ifdef CONFIG_VIDEO_NX_MIPI
+ case DP_DEVICE_MIPI:
+ nx_mipi_display(dp->module,
+ &dp->sync, &dp->ctrl, &dp->top,
+ dp->planes, (struct dp_mipi_dev *)dp->device);
+ break;
+#endif
+#ifdef CONFIG_VIDEO_NX_HDMI
+ case DP_DEVICE_HDMI:
+ nx_hdmi_display(dp->module,
+ &dp->sync, &dp->ctrl, &dp->top,
+ dp->planes, (struct dp_hdmi_dev *)dp->device);
+ break;
+#endif
+ default:
+ printf("fail : not support lcd type %d !!!\n", dp->dev_type);
+ goto err_setup;
+ };
+
+ printf("LCD: [%s] dp.%d.%d %dx%d %dbpp FB:0x%08x\n",
+ dp_dev_str[dp->dev_type], dp->module, dp->fb_plane->layer,
+ dp->fb_plane->width, dp->fb_plane->height, dp->depth * 8,
+ dp->fb_addr);
+
+ return dp;
+
+err_setup:
+ kfree(dp);
+
+ return NULL;
+}
+
+#if defined CONFIG_LCD
+
+/* default lcd */
+struct vidinfo panel_info = {
+ .vl_col = 320, .vl_row = 240, .vl_bpix = 32,
+};
+
+void lcd_ctrl_init(void *lcdbase)
+{
+ vidinfo_t *pi = &panel_info;
+ struct nx_display_dev *dp;
+ int bpix;
+
+ dp = nx_display_setup();
+ if (!dp)
+ return NULL;
+
+ switch (dp->depth) {
+ case 2:
+ bpix = LCD_COLOR16;
+ break;
+ case 3:
+ case 4:
+ bpix = LCD_COLOR32;
+ break;
+ default:
+ printf("fail : not support LCD bit per pixel %d\n",
+ dp->depth * 8);
+ return NULL;
+ }
+
+ dp->panel_info = pi;
+
+ /* set resolution with config */
+ pi->vl_bpix = bpix;
+ pi->vl_col = dp->fb_plane->width;
+ pi->vl_row = dp->fb_plane->height;
+ pi->priv = dp;
+ gd->fb_base = dp->fb_addr;
+}
+
+void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
+{
+}
+
+__weak void lcd_enable(void)
+{
+}
+#endif
+
+static int nx_display_probe(struct udevice *dev)
+{
+ struct video_uc_platdata *uc_plat = dev_get_uclass_platdata(dev);
+ struct video_priv *uc_priv = dev_get_uclass_priv(dev);
+ struct nx_display_platdata *plat = dev_get_platdata(dev);
+ static GraphicDevice *graphic_device;
+ char addr[64];
+
+ debug("%s()\n", __func__);
+
+ if (!dev)
+ return -EINVAL;
+
+ if (!uc_plat) {
+ debug("%s(): video_uc_platdata *plat == NULL --> return -EINVAL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (!uc_priv) {
+ debug("%s(): video_priv *uc_priv == NULL --> return -EINVAL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (!plat) {
+ debug("%s(): nx_display_platdata *plat == NULL --> return -EINVAL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ struct nx_display_dev *dp;
+ unsigned int pp_index = 0;
+
+ dp = nx_display_setup();
+ if (!dp) {
+ debug("%s(): nx_display_setup() == 0 --> return -EINVAL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ switch (dp->depth) {
+ case 2:
+ pp_index = GDF_16BIT_565RGB;
+ uc_priv->bpix = VIDEO_BPP16;
+ break;
+ case 3:
+ /* There is no VIDEO_BPP24 because these values are of
+ * type video_log2_bpp
+ */
+ case 4:
+ pp_index = GDF_32BIT_X888RGB;
+ uc_priv->bpix = VIDEO_BPP32;
+ break;
+ default:
+ printf("fail : not support LCD bit per pixel %d\n",
+ dp->depth * 8);
+ return -EINVAL;
+ }
+
+ uc_priv->xsize = dp->fb_plane->width;
+ uc_priv->ysize = dp->fb_plane->height;
+ uc_priv->rot = 0;
+
+ graphic_device = &dp->graphic_device;
+ graphic_device->frameAdrs = dp->fb_addr;
+ graphic_device->gdfIndex = pp_index;
+ graphic_device->gdfBytesPP = dp->depth;
+ graphic_device->winSizeX = dp->fb_plane->width;
+ graphic_device->winSizeY = dp->fb_plane->height;
+ graphic_device->plnSizeX =
+ graphic_device->winSizeX * graphic_device->gdfBytesPP;
+
+ /*
+ * set environment variable "fb_addr" (frame buffer address), required
+ * for splash image. Because drv_video_init() in common/stdio.c is only
+ * called when CONFIG_VIDEO is set (and not if CONFIG_DM_VIDEO is set).
+ */
+ sprintf(addr, "0x%x", dp->fb_addr);
+ debug("%s(): env_set(\"fb_addr\", %s) ...\n", __func__, addr);
+ env_set("fb_addr", addr);
+
+ return 0;
+}
+
+static int nx_display_bind(struct udevice *dev)
+{
+ struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
+
+ debug("%s()\n", __func__);
+
+ /* Datasheet S5p4418:
+ * Resolution up to 2048 x 1280, up to 12 Bit per color (HDMI)
+ * Actual (max.) size is 0x1000000 because in U-Boot nanopi2-2016.01
+ * "#define CONFIG_FB_ADDR 0x77000000" and next address is
+ * "#define BMP_LOAD_ADDR 0x78000000"
+ */
+ plat->size = 0x1000000;
+
+ return 0;
+}
+
+static const struct udevice_id nx_display_ids[] = {
+ {.compatible = "nexell,nexell-display", },
+ {}
+};
+
+U_BOOT_DRIVER(nexell_display) = {
+ .name = "nexell-display",
+ .id = UCLASS_VIDEO,
+ .of_match = nx_display_ids,
+ .platdata_auto_alloc_size =
+ sizeof(struct nx_display_platdata),
+ .bind = nx_display_bind,
+ .probe = nx_display_probe,
+ .priv_auto_alloc_size = sizeof(struct nx_display_dev),
+};