From 97ece830eceb22c015070f154e857f202218de5c Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Date: Mon, 19 Jan 2015 05:23:33 +0200
Subject: [PATCH] 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>
---
board/sunxi/Kconfig | 7 +++++++
drivers/video/sunxi_display.c | 38 +++++++++++++++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 1e9cee7e07..cea356c47c 100644
--- 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 b2ac6081d7..0505f3c963 100644
--- 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:
--
2.39.5