[U-Boot] [RFC 1/4] video: fsl_dcu_fb: refactor init functions

From: Igor Opaniuk igor.opaniuk@toradex.com

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 --- board/freescale/ls1021aqds/dcu.c | 6 +- board/toradex/colibri_vf/dcu.c | 6 +- drivers/video/fsl_dcu_fb.c | 107 +++++++++++++++++-------------- include/fsl_dcu_fb.h | 12 +++- 4 files changed, 77 insertions(+), 54 deletions(-)

diff --git a/board/freescale/ls1021aqds/dcu.c b/board/freescale/ls1021aqds/dcu.c index 14855ea1d9..c4eac5e302 100644 --- a/board/freescale/ls1021aqds/dcu.c +++ b/board/freescale/ls1021aqds/dcu.c @@ -39,7 +39,9 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock) 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, 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);

pixel_format = 32; - fsl_dcu_init(xres, yres, pixel_format); + fsl_dcu_init(fbinfo, xres, yres, pixel_format);

return 0; } diff --git a/board/toradex/colibri_vf/dcu.c b/board/toradex/colibri_vf/dcu.c index c36e90cd22..c688ed79ff 100644 --- a/board/toradex/colibri_vf/dcu.c +++ b/board/toradex/colibri_vf/dcu.c @@ -26,11 +26,13 @@ unsigned int dcu_set_pixel_clock(unsigned int pixclock) 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, struct fb_videomode *dcu_fb_videomode) { - fsl_dcu_init(xres, yres, 32); + fsl_dcu_init(fbinfo, xres, yres, 32);

return 0; } diff --git a/drivers/video/fsl_dcu_fb.c b/drivers/video/fsl_dcu_fb.c index 9f6e7f83b0..f789ec597d 100644 --- a/drivers/video/fsl_dcu_fb.c +++ b/drivers/video/fsl_dcu_fb.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2014 Freescale Semiconductor, Inc. + * Copyright 2019 Toradex AG * * 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; unsigned int bpp = BPP_24_RGB888;

dcu_write32(&regs->ctrldescl[index][0], - DCU_CTRLDESCLN_1_HEIGHT(info.var.yres) | - DCU_CTRLDESCLN_1_WIDTH(info.var.xres)); + DCU_CTRLDESCLN_1_HEIGHT(fbinfo.var.yres) | + DCU_CTRLDESCLN_1_WIDTH(fbinfo.var.xres));

dcu_write32(&regs->ctrldescl[index][1], DCU_CTRLDESCLN_2_POSY(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) { case 16: @@ -294,42 +297,42 @@ static int layer_ctrldesc_init(int index, u32 pixel_format) return 0; }

-int fsl_dcu_init(unsigned int xres, unsigned int yres, - unsigned int pixel_format) +int fsl_dcu_init(struct fb_info *fbinfo, unsigned int xres, + unsigned int yres, unsigned int pixel_format) { struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; unsigned int div, mode;

- info.screen_size = - info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8); + fbinfo->screen_size = fbinfo->var.xres * fbinfo->var.yres * + (fbinfo->var.bits_per_pixel / 8);

- if (info.screen_size > CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB) { - info.screen_size = 0; + if (fbinfo->screen_size > CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB) { + fbinfo->screen_size = 0; return -ENOMEM; }

/* Reserve framebuffer at the end of memory */ gd->fb_base = gd->bd->bi_dram[0].start + - gd->bd->bi_dram[0].size - info.screen_size; - info.screen_base = (char *)gd->fb_base; + gd->bd->bi_dram[0].size - fbinfo->screen_size; + 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();

dcu_write32(&regs->disp_size, - DCU_DISP_SIZE_DELTA_Y(info.var.yres) | - DCU_DISP_SIZE_DELTA_X(info.var.xres / 16)); + DCU_DISP_SIZE_DELTA_Y(fbinfo->var.yres) | + DCU_DISP_SIZE_DELTA_X(fbinfo->var.xres / 16));

dcu_write32(&regs->hsyn_para, - DCU_HSYN_PARA_BP(info.var.left_margin) | - DCU_HSYN_PARA_PW(info.var.hsync_len) | - DCU_HSYN_PARA_FP(info.var.right_margin)); + DCU_HSYN_PARA_BP(fbinfo->var.left_margin) | + DCU_HSYN_PARA_PW(fbinfo->var.hsync_len) | + DCU_HSYN_PARA_FP(fbinfo->var.right_margin));

dcu_write32(&regs->vsyn_para, - DCU_VSYN_PARA_BP(info.var.upper_margin) | - DCU_VSYN_PARA_PW(info.var.vsync_len) | - DCU_VSYN_PARA_FP(info.var.lower_margin)); + DCU_VSYN_PARA_BP(fbinfo->var.upper_margin) | + DCU_VSYN_PARA_PW(fbinfo->var.vsync_len) | + DCU_VSYN_PARA_FP(fbinfo->var.lower_margin));

dcu_write32(&regs->synpol, 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); 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->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; }

-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; unsigned int depth = 0, freq = 0; + 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)) - return NULL; + return -EINVAL;

/* Find the monitor port, which is a required option */ if (!options) - return NULL; + return -EINVAL; + if (strncmp(options, "monitor=", 8) != 0) - return NULL; + return -EINVAL;

- switch (RESOLUTION(ctfb.winSizeX, ctfb.winSizeY)) { + switch (RESOLUTION(*win_x, *win_y)) { case RESOLUTION(480, 272): fsl_dcu_mode_db = &fsl_dcu_mode_480_272; break; @@ -402,25 +407,33 @@ void *video_hw_init(void) break; default: printf("unsupported resolution %ux%u\n", - ctfb.winSizeX, ctfb.winSizeY); + *win_x, *win_y); }

- info.var.xres = fsl_dcu_mode_db->xres; - info.var.yres = fsl_dcu_mode_db->yres; - info.var.bits_per_pixel = 32; - info.var.pixclock = fsl_dcu_mode_db->pixclock; - info.var.left_margin = fsl_dcu_mode_db->left_margin; - info.var.right_margin = fsl_dcu_mode_db->right_margin; - info.var.upper_margin = fsl_dcu_mode_db->upper_margin; - info.var.lower_margin = fsl_dcu_mode_db->lower_margin; - info.var.hsync_len = fsl_dcu_mode_db->hsync_len; - info.var.vsync_len = fsl_dcu_mode_db->vsync_len; - info.var.sync = fsl_dcu_mode_db->sync; - info.var.vmode = fsl_dcu_mode_db->vmode; - info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8; - - if (platform_dcu_init(ctfb.winSizeX, ctfb.winSizeY, - options + 8, fsl_dcu_mode_db) < 0) + fbinfo->var.xres = fsl_dcu_mode_db->xres; + fbinfo->var.yres = fsl_dcu_mode_db->yres; + fbinfo->var.bits_per_pixel = 32; + fbinfo->var.pixclock = fsl_dcu_mode_db->pixclock; + fbinfo->var.left_margin = fsl_dcu_mode_db->left_margin; + fbinfo->var.right_margin = fsl_dcu_mode_db->right_margin; + fbinfo->var.upper_margin = fsl_dcu_mode_db->upper_margin; + fbinfo->var.lower_margin = fsl_dcu_mode_db->lower_margin; + fbinfo->var.hsync_len = fsl_dcu_mode_db->hsync_len; + fbinfo->var.vsync_len = fsl_dcu_mode_db->vsync_len; + fbinfo->var.sync = fsl_dcu_mode_db->sync; + fbinfo->var.vmode = fsl_dcu_mode_db->vmode; + fbinfo->fix.line_length = fbinfo->var.xres * + fbinfo->var.bits_per_pixel / 8; + + return platform_dcu_init(fbinfo, *win_x, *win_y, + 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;

ctfb.frameAdrs = (unsigned int)info.screen_base; diff --git a/include/fsl_dcu_fb.h b/include/fsl_dcu_fb.h index 2dd5f54c3e..7a5347a924 100644 --- a/include/fsl_dcu_fb.h +++ b/include/fsl_dcu_fb.h @@ -6,11 +6,17 @@ */ #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); + int fsl_dcu_fixedfb_setup(void *blob);

/* Prototypes for external board-specific functions */ -int platform_dcu_init(unsigned int xres, unsigned int yres, - const char *port, struct fb_videomode *dcu_fb_videomode); +int platform_dcu_init(struct fb_info *fbinfo, + unsigned int xres, + unsigned int yres, + const char *port, + struct fb_videomode *dcu_fb_videomode); unsigned int dcu_set_pixel_clock(unsigned int pixclock);