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video: fsl_dcu_fb: refactor init functions

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Move dcu-related code to fsl_dcu_probe_common, keep in video_hw_init()
only legacy video stack (filling GraphicPanel struct etc.).

Add wrappers for all init functions, that will let to provide
struct fb_info as an additional param (needed for further moving it from
the global scope to driver private data struct in DM converted driver).

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
This commit is contained in:
Igor Opaniuk 2019-06-10 14:47:49 +03:00 • committed by Anatolij Gustschin
parent 75551c8bfc
commit a6eedb670d
6 changed files with 85 additions and 60 deletions
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5
board/freescale/ls1021aiot/dcu.c
View file

@ -23,7 +23,8 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock)
return div; return div;
} }
int platform_dcu_init(unsigned int xres, unsigned int yres, int platform_dcu_init(struct fb_info *fbinfo,
unsigned int xres, unsigned int yres,
const char *port, const char *port,
struct fb_videomode *dcu_fb_videomode) struct fb_videomode *dcu_fb_videomode)
{ {
@ -40,7 +41,7 @@ int platform_dcu_init(unsigned int xres, unsigned int yres,
printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres); printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
pixel_format = 32; pixel_format = 32;
fsl_dcu_init(xres, yres, pixel_format); fsl_dcu_init(fbinfo, xres, yres, pixel_format);
return 0; return 0;
} }

6
board/freescale/ls1021aqds/dcu.c
View file

@ -39,7 +39,9 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock)
return div; return div;
} }
int platform_dcu_init(unsigned int xres, unsigned int yres, int platform_dcu_init(struct fb_info *fbinfo,
unsigned int xres,
unsigned int yres,
const char *port, const char *port,
struct fb_videomode *dcu_fb_videomode) struct fb_videomode *dcu_fb_videomode)
{ {
@ -85,7 +87,7 @@ int platform_dcu_init(unsigned int xres, unsigned int yres,
printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres); printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
pixel_format = 32; pixel_format = 32;
fsl_dcu_init(xres, yres, pixel_format); fsl_dcu_init(fbinfo, xres, yres, pixel_format);
return 0; return 0;
} }

5
board/freescale/ls1021atwr/dcu.c
View file

@ -23,7 +23,8 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock)
return div; return div;
} }
int platform_dcu_init(unsigned int xres, unsigned int yres, int platform_dcu_init(struct fb_info *fbinfo,
unsigned int xres, unsigned int yres,
const char *port, const char *port,
struct fb_videomode *dcu_fb_videomode) struct fb_videomode *dcu_fb_videomode)
{ {
@ -40,7 +41,7 @@ int platform_dcu_init(unsigned int xres, unsigned int yres,
printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres); printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
pixel_format = 32; pixel_format = 32;
fsl_dcu_init(xres, yres, pixel_format); fsl_dcu_init(fbinfo, xres, yres, pixel_format);
return 0; return 0;
} }

6
board/toradex/colibri_vf/dcu.c
View file

@ -26,11 +26,13 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock)
return div; return div;
} }
int platform_dcu_init(unsigned int xres, unsigned int yres, int platform_dcu_init(struct fb_info *fbinfo,
unsigned int xres,
unsigned int yres,
const char *port, const char *port,
struct fb_videomode *dcu_fb_videomode) struct fb_videomode *dcu_fb_videomode)
{ {
fsl_dcu_init(xres, yres, 32); fsl_dcu_init(fbinfo, xres, yres, 32);
return 0; return 0;
} }

107
drivers/video/fsl_dcu_fb.c
View file

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+ // SPDX-License-Identifier: GPL-2.0+
/* /*
* Copyright 2014 Freescale Semiconductor, Inc. * Copyright 2014 Freescale Semiconductor, Inc.
* Copyright 2019 Toradex AG
* *
* FSL DCU Framebuffer driver * FSL DCU Framebuffer driver
*/ */
@ -240,20 +241,22 @@ static void reset_total_layers(void)
} }
} }
static int layer_ctrldesc_init(int index, u32 pixel_format) static int layer_ctrldesc_init(struct fb_info fbinfo,
int index, u32 pixel_format)
{ {
struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR;
unsigned int bpp = BPP_24_RGB888; unsigned int bpp = BPP_24_RGB888;
dcu_write32(&regs->ctrldescl[index][0], dcu_write32(&regs->ctrldescl[index][0],
DCU_CTRLDESCLN_1_HEIGHT(info.var.yres) | DCU_CTRLDESCLN_1_HEIGHT(fbinfo.var.yres) |
DCU_CTRLDESCLN_1_WIDTH(info.var.xres)); DCU_CTRLDESCLN_1_WIDTH(fbinfo.var.xres));
dcu_write32(&regs->ctrldescl[index][1], dcu_write32(&regs->ctrldescl[index][1],
DCU_CTRLDESCLN_2_POSY(0) | DCU_CTRLDESCLN_2_POSY(0) |
DCU_CTRLDESCLN_2_POSX(0)); DCU_CTRLDESCLN_2_POSX(0));
dcu_write32(&regs->ctrldescl[index][2], (unsigned int)info.screen_base); dcu_write32(&regs->ctrldescl[index][2],
(unsigned int)fbinfo.screen_base);
switch (pixel_format) { switch (pixel_format) {
case 16: case 16:
@ -294,42 +297,42 @@ static int layer_ctrldesc_init(int index, u32 pixel_format)
return 0; return 0;
} }
int fsl_dcu_init(unsigned int xres, unsigned int yres, int fsl_dcu_init(struct fb_info *fbinfo, unsigned int xres,
unsigned int pixel_format) unsigned int yres, unsigned int pixel_format)
{ {
struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR;
unsigned int div, mode; unsigned int div, mode;
info.screen_size = fbinfo->screen_size = fbinfo->var.xres * fbinfo->var.yres *
info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8); (fbinfo->var.bits_per_pixel / 8);
if (info.screen_size > CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB) { if (fbinfo->screen_size > CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB) {
info.screen_size = 0; fbinfo->screen_size = 0;
return -ENOMEM; return -ENOMEM;
} }
/* Reserve framebuffer at the end of memory */ /* Reserve framebuffer at the end of memory */
gd->fb_base = gd->bd->bi_dram[0].start + gd->fb_base = gd->bd->bi_dram[0].start +
gd->bd->bi_dram[0].size - info.screen_size; gd->bd->bi_dram[0].size - fbinfo->screen_size;
info.screen_base = (char *)gd->fb_base; fbinfo->screen_base = (char *)gd->fb_base;
memset(info.screen_base, 0, info.screen_size); memset(fbinfo->screen_base, 0, fbinfo->screen_size);
reset_total_layers(); reset_total_layers();
dcu_write32(&regs->disp_size, dcu_write32(&regs->disp_size,
DCU_DISP_SIZE_DELTA_Y(info.var.yres) | DCU_DISP_SIZE_DELTA_Y(fbinfo->var.yres) |
DCU_DISP_SIZE_DELTA_X(info.var.xres / 16)); DCU_DISP_SIZE_DELTA_X(fbinfo->var.xres / 16));
dcu_write32(&regs->hsyn_para, dcu_write32(&regs->hsyn_para,
DCU_HSYN_PARA_BP(info.var.left_margin) | DCU_HSYN_PARA_BP(fbinfo->var.left_margin) |
DCU_HSYN_PARA_PW(info.var.hsync_len) | DCU_HSYN_PARA_PW(fbinfo->var.hsync_len) |
DCU_HSYN_PARA_FP(info.var.right_margin)); DCU_HSYN_PARA_FP(fbinfo->var.right_margin));
dcu_write32(&regs->vsyn_para, dcu_write32(&regs->vsyn_para,
DCU_VSYN_PARA_BP(info.var.upper_margin) | DCU_VSYN_PARA_BP(fbinfo->var.upper_margin) |
DCU_VSYN_PARA_PW(info.var.vsync_len) | DCU_VSYN_PARA_PW(fbinfo->var.vsync_len) |
DCU_VSYN_PARA_FP(info.var.lower_margin)); DCU_VSYN_PARA_FP(fbinfo->var.lower_margin));
dcu_write32(&regs->synpol, dcu_write32(&regs->synpol,
DCU_SYN_POL_INV_PXCK_FALL | DCU_SYN_POL_INV_PXCK_FALL |
@ -352,9 +355,9 @@ int fsl_dcu_init(unsigned int xres, unsigned int yres,
mode = dcu_read32(&regs->mode); mode = dcu_read32(&regs->mode);
dcu_write32(&regs->mode, mode | DCU_MODE_NORMAL); dcu_write32(&regs->mode, mode | DCU_MODE_NORMAL);
layer_ctrldesc_init(0, pixel_format); layer_ctrldesc_init(*fbinfo, 0, pixel_format);
div = dcu_set_pixel_clock(info.var.pixclock); div = dcu_set_pixel_clock(fbinfo->var.pixclock);
dcu_write32(&regs->div_ratio, (div - 1)); dcu_write32(&regs->div_ratio, (div - 1));
dcu_write32(&regs->update_mode, DCU_UPDATE_MODE_READREG); dcu_write32(&regs->update_mode, DCU_UPDATE_MODE_READREG);
@ -367,24 +370,26 @@ ulong board_get_usable_ram_top(ulong total_size)
return gd->ram_top - CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB; return gd->ram_top - CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB;
} }
void *video_hw_init(void) int fsl_probe_common(struct fb_info *fbinfo, unsigned int *win_x,
unsigned int *win_y)
{ {
static GraphicDevice ctfb;
const char *options; const char *options;
unsigned int depth = 0, freq = 0; unsigned int depth = 0, freq = 0;
struct fb_videomode *fsl_dcu_mode_db = &fsl_dcu_mode_480_272; struct fb_videomode *fsl_dcu_mode_db = &fsl_dcu_mode_480_272;
if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq, if (!video_get_video_mode(win_x, win_y, &depth, &freq,
&options)) &options))
return NULL; return -EINVAL;
/* Find the monitor port, which is a required option */ /* Find the monitor port, which is a required option */
if (!options) if (!options)
return NULL; return -EINVAL;
if (strncmp(options, "monitor=", 8) != 0)
return NULL;
switch (RESOLUTION(ctfb.winSizeX, ctfb.winSizeY)) { if (strncmp(options, "monitor=", 8) != 0)
return -EINVAL;
switch (RESOLUTION(*win_x, *win_y)) {
case RESOLUTION(480, 272): case RESOLUTION(480, 272):
fsl_dcu_mode_db = &fsl_dcu_mode_480_272; fsl_dcu_mode_db = &fsl_dcu_mode_480_272;
break; break;
@ -402,25 +407,33 @@ void *video_hw_init(void)
break; break;
default: default:
printf("unsupported resolution %ux%u\n", printf("unsupported resolution %ux%u\n",
ctfb.winSizeX, ctfb.winSizeY); *win_x, *win_y);
} }
info.var.xres = fsl_dcu_mode_db->xres; fbinfo->var.xres = fsl_dcu_mode_db->xres;
info.var.yres = fsl_dcu_mode_db->yres; fbinfo->var.yres = fsl_dcu_mode_db->yres;
info.var.bits_per_pixel = 32; fbinfo->var.bits_per_pixel = 32;
info.var.pixclock = fsl_dcu_mode_db->pixclock; fbinfo->var.pixclock = fsl_dcu_mode_db->pixclock;
info.var.left_margin = fsl_dcu_mode_db->left_margin; fbinfo->var.left_margin = fsl_dcu_mode_db->left_margin;
info.var.right_margin = fsl_dcu_mode_db->right_margin; fbinfo->var.right_margin = fsl_dcu_mode_db->right_margin;
info.var.upper_margin = fsl_dcu_mode_db->upper_margin; fbinfo->var.upper_margin = fsl_dcu_mode_db->upper_margin;
info.var.lower_margin = fsl_dcu_mode_db->lower_margin; fbinfo->var.lower_margin = fsl_dcu_mode_db->lower_margin;
info.var.hsync_len = fsl_dcu_mode_db->hsync_len; fbinfo->var.hsync_len = fsl_dcu_mode_db->hsync_len;
info.var.vsync_len = fsl_dcu_mode_db->vsync_len; fbinfo->var.vsync_len = fsl_dcu_mode_db->vsync_len;
info.var.sync = fsl_dcu_mode_db->sync; fbinfo->var.sync = fsl_dcu_mode_db->sync;
info.var.vmode = fsl_dcu_mode_db->vmode; fbinfo->var.vmode = fsl_dcu_mode_db->vmode;
info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8; fbinfo->fix.line_length = fbinfo->var.xres *
fbinfo->var.bits_per_pixel / 8;
if (platform_dcu_init(ctfb.winSizeX, ctfb.winSizeY, return platform_dcu_init(fbinfo, *win_x, *win_y,
options + 8, fsl_dcu_mode_db) < 0) options + 8, fsl_dcu_mode_db);
}
void *video_hw_init(void)
{
static GraphicDevice ctfb;
if (fsl_probe_common(&info, &ctfb.winSizeX, &ctfb.winSizeY) < 0)
return NULL; return NULL;
ctfb.frameAdrs = (unsigned int)info.screen_base; ctfb.frameAdrs = (unsigned int)info.screen_base;

12
include/fsl_dcu_fb.h
View file

@ -6,11 +6,17 @@
*/ */
#include <linux/fb.h> #include <linux/fb.h>
int fsl_dcu_init(unsigned int xres, unsigned int yres, int fsl_dcu_init(struct fb_info *fbinfo,
unsigned int xres,
unsigned int yres,
unsigned int pixel_format); unsigned int pixel_format);
int fsl_dcu_fixedfb_setup(void *blob); int fsl_dcu_fixedfb_setup(void *blob);
/* Prototypes for external board-specific functions */ /* Prototypes for external board-specific functions */
int platform_dcu_init(unsigned int xres, unsigned int yres, int platform_dcu_init(struct fb_info *fbinfo,
const char *port, struct fb_videomode *dcu_fb_videomode); unsigned int xres,
unsigned int yres,
const char *port,
struct fb_videomode *dcu_fb_videomode);
unsigned int dcu_set_pixel_clock(unsigned int pixclock); unsigned int dcu_set_pixel_clock(unsigned int pixclock);