[PATCH v3] video: sunxi_display: Convert to DM_VIDEO
Simon Glass
sjg at chromium.org
Sun Feb 7 15:37:34 CET 2021
Hi Andre,
On Thu, 4 Feb 2021 at 18:08, Andre Przywara <andre.przywara at arm.com> wrote:
>
> From: Jagan Teki <jagan at amarulasolutions.com>
>
> DM_VIDEO migration deadline is already expired, but around
> 80 Allwinner boards are still using video in a legacy way.
>
> ===================== WARNING ======================
> This board does not use CONFIG_DM_VIDEO Please update
> the board to use CONFIG_DM_VIDEO before the v2019.07 release.
> Failure to update by the deadline may result in board removal.
> See doc/driver-model/migration.rst for more info.
> ====================================================
>
> Convert the legacy video driver over to the DM_VIDEO framework. This is
> a minimal conversion: it doesn't use the DT for finding its resources,
> nor does it use DM clocks or DM devices for the outputs (LCD, HDMI, CVBS).
>
> Tested in Bananapi M1+ Plus 1920x1200 HDMI out. (Jagan)
>
> Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
> [Andre: rebase and smaller fixes]
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
> Hi,
>
> I picked this one up to get rid of the warnings. I dropped the BMP
> support for now (v2 1/3 and v2 2/3), I need to have a closer look, as
> I am not convinced this was the right solution.
>
> Cheers,
> Andre
>
> Changelog v2 .. v3:
> - rebase against master, fixing up renamed variables and structs
> - replace enum with #define
> - remove BMP from Kconfig
> - fix memory node size calculation in simplefb setup
>
> arch/arm/mach-sunxi/Kconfig | 9 +-
> drivers/video/sunxi/sunxi_display.c | 262 ++++++++++++++++------------
> include/configs/sunxi-common.h | 17 --
> scripts/config_whitelist.txt | 1 -
> 4 files changed, 157 insertions(+), 132 deletions(-)
>
Reviewed-by: Simon Glass <sjg at chromium.org>
Some thoughts below
> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
> index 0135575ca1e..a29d11505aa 100644
> --- a/arch/arm/mach-sunxi/Kconfig
> +++ b/arch/arm/mach-sunxi/Kconfig
> @@ -816,13 +816,14 @@ config VIDEO_SUNXI
> depends on !MACH_SUN9I
> depends on !MACH_SUN50I
> depends on !SUN50I_GEN_H6
> - select VIDEO
> + select DM_VIDEO
I wonder whether instead VIDEO_SUNXI should depend on DM_VIDEO ?
> + select DISPLAY
> imply VIDEO_DT_SIMPLEFB
> default y
> ---help---
> - Say Y here to add support for using a cfb console on the HDMI, LCD
> - or VGA output found on most sunxi devices. See doc/README.video for
> - info on how to select the video output and mode.
> + Say Y here to add support for using a graphical console on the HDMI,
> + LCD or VGA output found on older sunxi devices. This will also provide
> + a simple_framebuffer device for Linux.
>
> config VIDEO_HDMI
> bool "HDMI output support"
> diff --git a/drivers/video/sunxi/sunxi_display.c b/drivers/video/sunxi/sunxi_display.c
> index f52aba4d21c..61498d1642f 100644
> --- a/drivers/video/sunxi/sunxi_display.c
> +++ b/drivers/video/sunxi/sunxi_display.c
> @@ -7,6 +7,8 @@
> */
>
> #include <common.h>
> +#include <display.h>
> +#include <dm.h>
> #include <cpu_func.h>
> #include <efi_loader.h>
> #include <init.h>
> @@ -28,7 +30,9 @@
> #include <fdt_support.h>
> #include <i2c.h>
> #include <malloc.h>
> +#include <video.h>
> #include <video_fb.h>
> +#include <dm/uclass-internal.h>
Do you need that? Internal things should be avoided if posssible.
> #include "../videomodes.h"
> #include "../anx9804.h"
> #include "../hitachi_tx18d42vm_lcd.h"
> @@ -45,6 +49,11 @@
>
> DECLARE_GLOBAL_DATA_PTR;
>
> +/* Maximum LCD size we support */
> +#define LCD_MAX_WIDTH 3840
> +#define LCD_MAX_HEIGHT 2160
> +#define LCD_MAX_LOG2_BPP VIDEO_BPP32
> +
> enum sunxi_monitor {
> sunxi_monitor_none,
> sunxi_monitor_dvi,
> @@ -59,12 +68,11 @@ enum sunxi_monitor {
> #define SUNXI_MONITOR_LAST sunxi_monitor_composite_pal_nc
>
> struct sunxi_display {
> - GraphicDevice graphic_device;
> enum sunxi_monitor monitor;
> unsigned int depth;
> unsigned int fb_addr;
> unsigned int fb_size;
These last three are repeated from the uclass info. But fb_addr seems
to sometimes be different from the ucass frame buffer, in which case I
wonder how output actually works.
If you do actually need these, can you please document them here?
> -} sunxi_display;
> +};
>
> const struct ctfb_res_modes composite_video_modes[2] = {
> /* x y hz pixclk ps/kHz le ri up lo hs vs s vmode */
[..]
> -static void sunxi_mode_set(const struct ctfb_res_modes *mode,
> +static void sunxi_mode_set(struct sunxi_display *sunxi_display,
> + const struct ctfb_res_modes *mode,
> unsigned int address)
> {
> + enum sunxi_monitor monitor = sunxi_display->monitor;
> int __maybe_unused clk_div, clk_double;
> struct sunxi_lcdc_reg * const lcdc =
> (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
> struct sunxi_tve_reg * __maybe_unused const tve =
> (struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
>
> - switch (sunxi_display.monitor) {
> + switch (sunxi_display->monitor) {
> case sunxi_monitor_none:
> break;
> case sunxi_monitor_dvi:
> case sunxi_monitor_hdmi:
> #ifdef CONFIG_VIDEO_HDMI
I wonder if all of these can use IS_ENABLED()?
> - sunxi_composer_mode_set(mode, address);
> - sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 0);
> - sunxi_hdmi_mode_set(mode, clk_div, clk_double);
> + sunxi_composer_mode_set(mode, address, monitor);
> + sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 0, monitor);
> + sunxi_hdmi_mode_set(mode, clk_div, clk_double, monitor);
> sunxi_composer_enable();
> - lcdc_enable(lcdc, sunxi_display.depth);
> + lcdc_enable(lcdc, sunxi_display->depth);
> sunxi_hdmi_enable();
> #endif
> break;
[..]
> -void *video_hw_init(void)
> +static int sunxi_de_probe(struct udevice *dev)
This function is way too long and would benefit from splitting into
several parts IMO.
> {
> - static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
> + struct video_priv *uc_priv = dev_get_uclass_priv(dev);
> + struct video_uc_plat *plat = dev_get_uclass_plat(dev);
> + struct sunxi_display *sunxi_display = dev_get_priv(dev);
> const struct ctfb_res_modes *mode;
> struct ctfb_res_modes custom;
> const char *options;
> @@ -1067,10 +1079,8 @@ void *video_hw_init(void)
> char mon[16];
> char *lcd_mode = CONFIG_VIDEO_LCD_MODE;
>
> - memset(&sunxi_display, 0, sizeof(struct sunxi_display));
> -
> video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode,
> - &sunxi_display.depth, &options);
> + &sunxi_display->depth, &options);
> #ifdef CONFIG_VIDEO_HDMI
> hpd = video_get_option_int(options, "hpd", 1);
> hpd_delay = video_get_option_int(options, "hpd_delay", 500);
> @@ -1078,35 +1088,35 @@ void *video_hw_init(void)
> #endif
> overscan_x = video_get_option_int(options, "overscan_x", -1);
> overscan_y = video_get_option_int(options, "overscan_y", -1);
> - sunxi_display.monitor = sunxi_get_default_mon(true);
> + sunxi_display->monitor = sunxi_get_default_mon(true);
> video_get_option_string(options, "monitor", mon, sizeof(mon),
> - sunxi_get_mon_desc(sunxi_display.monitor));
> + sunxi_get_mon_desc(sunxi_display->monitor));
> for (i = 0; i <= SUNXI_MONITOR_LAST; i++) {
> if (strcmp(mon, sunxi_get_mon_desc(i)) == 0) {
> - sunxi_display.monitor = i;
> + sunxi_display->monitor = i;
> break;
> }
> }
> if (i > SUNXI_MONITOR_LAST)
> printf("Unknown monitor: '%s', falling back to '%s'\n",
> - mon, sunxi_get_mon_desc(sunxi_display.monitor));
> + mon, sunxi_get_mon_desc(sunxi_display->monitor));
>
> #ifdef CONFIG_VIDEO_HDMI
> /* If HDMI/DVI is selected do HPD & EDID, and handle fallback */
> - if (sunxi_display.monitor == sunxi_monitor_dvi ||
> - sunxi_display.monitor == sunxi_monitor_hdmi) {
> + if (sunxi_display->monitor == sunxi_monitor_dvi ||
> + sunxi_display->monitor == sunxi_monitor_hdmi) {
> /* Always call hdp_detect, as it also enables clocks, etc. */
> hdmi_present = (sunxi_hdmi_hpd_detect(hpd_delay) == 1);
> if (hdmi_present && edid) {
> printf("HDMI connected: ");
> - if (sunxi_hdmi_edid_get_mode(&custom, true) == 0)
> + if (sunxi_hdmi_edid_get_mode(sunxi_display, &custom, true) == 0)
> mode = &custom;
> else
> hdmi_present = false;
> }
> /* Fall back to EDID in case HPD failed */
> if (edid && !hdmi_present) {
> - if (sunxi_hdmi_edid_get_mode(&custom, false) == 0) {
> + if (sunxi_hdmi_edid_get_mode(sunxi_display, &custom, false) == 0) {
> mode = &custom;
> hdmi_present = true;
> }
> @@ -1114,38 +1124,39 @@ void *video_hw_init(void)
> /* Shut down when display was not found */
> if ((hpd || edid) && !hdmi_present) {
> sunxi_hdmi_shutdown();
> - sunxi_display.monitor = sunxi_get_default_mon(false);
> + sunxi_display->monitor = sunxi_get_default_mon(false);
> } /* else continue with hdmi/dvi without a cable connected */
> }
> #endif
>
> - switch (sunxi_display.monitor) {
> + switch (sunxi_display->monitor) {
> case sunxi_monitor_none:
> - return NULL;
> + printf("Unknown monitor\n");
> + return -EINVAL;
> case sunxi_monitor_dvi:
> case sunxi_monitor_hdmi:
> if (!sunxi_has_hdmi()) {
> printf("HDMI/DVI not supported on this board\n");
> - sunxi_display.monitor = sunxi_monitor_none;
> - return NULL;
> + sunxi_display->monitor = sunxi_monitor_none;
> + return -EINVAL;
> }
> break;
> case sunxi_monitor_lcd:
> if (!sunxi_has_lcd()) {
> printf("LCD not supported on this board\n");
> - sunxi_display.monitor = sunxi_monitor_none;
> - return NULL;
> + sunxi_display->monitor = sunxi_monitor_none;
> + return -EINVAL;
> }
> - sunxi_display.depth = video_get_params(&custom, lcd_mode);
> + sunxi_display->depth = video_get_params(&custom, lcd_mode);
> mode = &custom;
> break;
> case sunxi_monitor_vga:
> if (!sunxi_has_vga()) {
> printf("VGA not supported on this board\n");
> - sunxi_display.monitor = sunxi_monitor_none;
> - return NULL;
> + sunxi_display->monitor = sunxi_monitor_none;
> + return -EINVAL;
> }
> - sunxi_display.depth = 18;
> + sunxi_display->depth = 18;
> break;
> case sunxi_monitor_composite_pal:
> case sunxi_monitor_composite_ntsc:
> @@ -1153,85 +1164,103 @@ void *video_hw_init(void)
> case sunxi_monitor_composite_pal_nc:
> if (!sunxi_has_composite()) {
> printf("Composite video not supported on this board\n");
> - sunxi_display.monitor = sunxi_monitor_none;
> - return NULL;
> + sunxi_display->monitor = sunxi_monitor_none;
> + return -EINVAL;
> }
> - if (sunxi_display.monitor == sunxi_monitor_composite_pal ||
> - sunxi_display.monitor == sunxi_monitor_composite_pal_nc)
> + if (sunxi_display->monitor == sunxi_monitor_composite_pal ||
> + sunxi_display->monitor == sunxi_monitor_composite_pal_nc)
> mode = &composite_video_modes[0];
> else
> mode = &composite_video_modes[1];
> - sunxi_display.depth = 24;
> + sunxi_display->depth = 24;
> break;
> }
>
> /* Yes these defaults are quite high, overscan on composite sucks... */
> if (overscan_x == -1)
> - overscan_x = sunxi_is_composite() ? 32 : 0;
> + overscan_x = sunxi_is_composite(sunxi_display->monitor) ? 32 : 0;
> if (overscan_y == -1)
> - overscan_y = sunxi_is_composite() ? 20 : 0;
> + overscan_y = sunxi_is_composite(sunxi_display->monitor) ? 20 : 0;
>
> - sunxi_display.fb_size =
> - (mode->xres * mode->yres * 4 + 0xfff) & ~0xfff;
> + sunxi_display->fb_size = plat->size;
> overscan_offset = (overscan_y * mode->xres + overscan_x) * 4;
> /* We want to keep the fb_base for simplefb page aligned, where as
> * the sunxi dma engines will happily accept an unaligned address. */
> if (overscan_offset)
> - sunxi_display.fb_size += 0x1000;
> -
> - if (sunxi_display.fb_size > CONFIG_SUNXI_MAX_FB_SIZE) {
> - printf("Error need %dkB for fb, but only %dkB is reserved\n",
> - sunxi_display.fb_size >> 10,
> - CONFIG_SUNXI_MAX_FB_SIZE >> 10);
> - return NULL;
> - }
> + sunxi_display->fb_size += 0x1000;
>
> printf("Setting up a %dx%d%s %s console (overscan %dx%d)\n",
> mode->xres, mode->yres,
> (mode->vmode == FB_VMODE_INTERLACED) ? "i" : "",
> - sunxi_get_mon_desc(sunxi_display.monitor),
> + sunxi_get_mon_desc(sunxi_display->monitor),
> overscan_x, overscan_y);
>
> - gd->fb_base = gd->bd->bi_dram[0].start +
> - gd->bd->bi_dram[0].size - sunxi_display.fb_size;
> + sunxi_display->fb_addr = plat->base;
> sunxi_engines_init();
>
> #ifdef CONFIG_EFI_LOADER
> - efi_add_memory_map(gd->fb_base, sunxi_display.fb_size,
> + efi_add_memory_map(sunxi_display->fb_addr, sunxi_display->fb_size,
> EFI_RESERVED_MEMORY_TYPE);
> #endif
>
> - fb_dma_addr = gd->fb_base - CONFIG_SYS_SDRAM_BASE;
> - sunxi_display.fb_addr = gd->fb_base;
> + fb_dma_addr = sunxi_display->fb_addr - CONFIG_SYS_SDRAM_BASE;
> if (overscan_offset) {
> fb_dma_addr += 0x1000 - (overscan_offset & 0xfff);
> - sunxi_display.fb_addr += (overscan_offset + 0xfff) & ~0xfff;
> - memset((void *)gd->fb_base, 0, sunxi_display.fb_size);
> - flush_cache(gd->fb_base, sunxi_display.fb_size);
> + sunxi_display->fb_addr += (overscan_offset + 0xfff) & ~0xfff;
ALIGN(overscan_offset, 0x100) ?
> + memset((void *)sunxi_display->fb_addr, 0, sunxi_display->fb_size);
> + flush_cache(sunxi_display->fb_addr, sunxi_display->fb_size);
Driver model clears the frame buffer. Is this needed?
> }
> - sunxi_mode_set(mode, fb_dma_addr);
> + sunxi_mode_set(sunxi_display, mode, fb_dma_addr);
>
> /*
> * These are the only members of this structure that are used. All the
> * others are driver specific. The pitch is stored in plnSizeX.
> */
> - graphic_device->frameAdrs = sunxi_display.fb_addr;
> - graphic_device->gdfIndex = GDF_32BIT_X888RGB;
> - graphic_device->gdfBytesPP = 4;
> - graphic_device->winSizeX = mode->xres - 2 * overscan_x;
> - graphic_device->winSizeY = mode->yres - 2 * overscan_y;
> - graphic_device->plnSizeX = mode->xres * graphic_device->gdfBytesPP;
> -
> - return graphic_device;
> + uc_priv->bpix = VIDEO_BPP32;
> + uc_priv->xsize = mode->xres;
> + uc_priv->ysize = mode->yres;
> +
> + video_set_flush_dcache(dev, 1);
true
> +
> + return 0;
> }
>
> +static int sunxi_de_bind(struct udevice *dev)
> +{
> + struct video_uc_plat *plat = dev_get_uclass_plat(dev);
> +
> + plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
> + (1 << LCD_MAX_LOG2_BPP) / 8;
Should use enum video_log2_bpp here. Also see VNBYTES().
> +
> + return 0;
> +}
> +
> +static const struct video_ops sunxi_de_ops = {
> +};
> +
> +U_BOOT_DRIVER(sunxi_de) = {
> + .name = "sunxi_de",
> + .id = UCLASS_VIDEO,
> + .ops = &sunxi_de_ops,
> + .bind = sunxi_de_bind,
> + .probe = sunxi_de_probe,
> + .priv_auto = sizeof(struct sunxi_display),
Should ideally have an _priv suffix
> + .flags = DM_FLAG_PRE_RELOC,
> +};
> +
> +U_BOOT_DRVINFO(sunxi_de) = {
> + .name = "sunxi_de"
> +};
> +
[..]
Regards,
Simon
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