video: sunxi: Hook up SSD2828 with the sunxi video driver

Convert GPIO names from Kconfig strings into pin numbers for
the 'ssd2828_config' struct. Add SSD2828 initialization between
enabling the parallel LCD interface and turning on the backlight.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 1e9cee7e07223e09844fdd5180eb404e26e989ad..cea356c47cd2dbd967ae767b8a975d17121d17dc 100644 (file)
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -347,6 +347,13 @@ config VIDEO_LCD_PANEL_LVDS
        bool "Generic lvds interface LCD panel"
        select VIDEO_LCD_IF_LVDS
 
+config VIDEO_LCD_PANEL_MIPI_4_LANE_513_MBPS_VIA_SSD2828
+       bool "MIPI 4-lane, 513Mbps LCD panel via SSD2828 bridge chip"
+       select VIDEO_LCD_SSD2828
+       select VIDEO_LCD_IF_PARALLEL
+       ---help---
+        7.85" 768x1024 LCD panels, such as LG LP079X01 or AUO B079XAN01.0
+
 endchoice
 
 

diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index b2ac6081d79356c0d3da8d3f14e915153d1d8a1a..0505f3c96398578c91aad5d77a601fb74d840350 100644 (file)
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -20,6 +20,7 @@
 #include <fdt_support.h>
 #include <video_fb.h>
 #include "videomodes.h"
+#include "ssd2828.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -821,6 +822,40 @@ static void sunxi_vga_external_dac_enable(void)
 }
 #endif /* CONFIG_VIDEO_VGA_VIA_LCD */
 
+#ifdef CONFIG_VIDEO_LCD_SSD2828
+static int sunxi_ssd2828_init(const struct ctfb_res_modes *mode)
+{
+       struct ssd2828_config cfg = {
+               .csx_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_CS),
+               .sck_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_SCLK),
+               .sdi_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_MOSI),
+               .sdo_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_MISO),
+               .reset_pin = name_to_gpio(CONFIG_VIDEO_LCD_SSD2828_RESET),
+               .ssd2828_tx_clk_khz  = CONFIG_VIDEO_LCD_SSD2828_TX_CLK * 1000,
+               .ssd2828_color_depth = 24,
+#ifdef CONFIG_VIDEO_LCD_PANEL_MIPI_4_LANE_513_MBPS_VIA_SSD2828
+               .mipi_dsi_number_of_data_lanes           = 4,
+               .mipi_dsi_bitrate_per_data_lane_mbps     = 513,
+               .mipi_dsi_delay_after_exit_sleep_mode_ms = 100,
+               .mipi_dsi_delay_after_set_display_on_ms  = 200
+#else
+#error MIPI LCD panel needs configuration parameters
+#endif
+       };
+
+       if (cfg.csx_pin == -1 || cfg.sck_pin == -1 || cfg.sdi_pin == -1) {
+               printf("SSD2828: SPI pins are not properly configured\n");
+               return 1;
+       }
+       if (cfg.reset_pin == -1) {
+               printf("SSD2828: Reset pin is not properly configured\n");
+               return 1;
+       }
+
+       return ssd2828_init(&cfg, mode);
+}
+#endif /* CONFIG_VIDEO_LCD_SSD2828 */
+
 static void sunxi_engines_init(void)
 {
        sunxi_composer_init();
@@ -853,6 +888,9 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
                sunxi_lcdc_tcon0_mode_set(mode);
                sunxi_composer_enable();
                sunxi_lcdc_enable();
+#ifdef CONFIG_VIDEO_LCD_SSD2828
+               sunxi_ssd2828_init(mode);
+#endif
                sunxi_lcdc_backlight_enable();
                break;
        case sunxi_monitor_vga: