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

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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>
This commit is contained in:
Siarhei Siamashka 2015-01-19 05:23:33 +02:00 • committed by Hans de Goede
parent b8329acf98
commit 97ece830ec
2 changed files with 45 additions and 0 deletions
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7
board/sunxi/Kconfig
View file

@ -347,6 +347,13 @@ config VIDEO_LCD_PANEL_LVDS
bool "Generic lvds interface LCD panel" bool "Generic lvds interface LCD panel"
select VIDEO_LCD_IF_LVDS 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 endchoice

38
drivers/video/sunxi_display.c
View file

@ -20,6 +20,7 @@
#include <fdt_support.h> #include <fdt_support.h>
#include <video_fb.h> #include <video_fb.h>
#include "videomodes.h" #include "videomodes.h"
#include "ssd2828.h"
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
@ -821,6 +822,40 @@ static void sunxi_vga_external_dac_enable(void)
} }
#endif /* CONFIG_VIDEO_VGA_VIA_LCD */ #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) static void sunxi_engines_init(void)
{ {
sunxi_composer_init(); 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_lcdc_tcon0_mode_set(mode);
sunxi_composer_enable(); sunxi_composer_enable();
sunxi_lcdc_enable(); sunxi_lcdc_enable();
#ifdef CONFIG_VIDEO_LCD_SSD2828
sunxi_ssd2828_init(mode);
#endif
sunxi_lcdc_backlight_enable(); sunxi_lcdc_backlight_enable();
break; break;
case sunxi_monitor_vga: case sunxi_monitor_vga: