diff options
Diffstat (limited to 'drivers/video/fsl_dcu_fb.c')
| -rw-r--r-- | drivers/video/fsl_dcu_fb.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/drivers/video/fsl_dcu_fb.c b/drivers/video/fsl_dcu_fb.c new file mode 100644 index 0000000000..d4cd382776 --- /dev/null +++ b/drivers/video/fsl_dcu_fb.c @@ -0,0 +1,365 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * FSL DCU Framebuffer driver + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/io.h> +#include <common.h> +#include <fsl_dcu_fb.h> +#include <linux/fb.h> +#include <malloc.h> +#include <video_fb.h> +#include "videomodes.h" + +/* Convert the X,Y resolution pair into a single number */ +#define RESOLUTION(x, y) (((u32)(x) << 16) | (y)) + +#ifdef CONFIG_SYS_FSL_DCU_LE +#define dcu_read32 in_le32 +#define dcu_write32 out_le32 +#elif defined(CONFIG_SYS_FSL_DCU_BE) +#define dcu_read32 in_be32 +#define dcu_write32 out_be32 +#endif + +#define DCU_MODE_BLEND_ITER(x) ((x) << 20) +#define DCU_MODE_RASTER_EN (1 << 14) +#define DCU_MODE_NORMAL 1 +#define DCU_MODE_COLORBAR 3 +#define DCU_BGND_R(x) ((x) << 16) +#define DCU_BGND_G(x) ((x) << 8) +#define DCU_BGND_B(x) (x) +#define DCU_DISP_SIZE_DELTA_Y(x) ((x) << 16) +#define DCU_DISP_SIZE_DELTA_X(x) (x) +#define DCU_HSYN_PARA_BP(x) ((x) << 22) +#define DCU_HSYN_PARA_PW(x) ((x) << 11) +#define DCU_HSYN_PARA_FP(x) (x) +#define DCU_VSYN_PARA_BP(x) ((x) << 22) +#define DCU_VSYN_PARA_PW(x) ((x) << 11) +#define DCU_VSYN_PARA_FP(x) (x) +#define DCU_SYN_POL_INV_PXCK_FALL (0 << 6) +#define DCU_SYN_POL_NEG_REMAIN (0 << 5) +#define DCU_SYN_POL_INV_VS_LOW (1 << 1) +#define DCU_SYN_POL_INV_HS_LOW (1) +#define DCU_THRESHOLD_LS_BF_VS(x) ((x) << 16) +#define DCU_THRESHOLD_OUT_BUF_HIGH(x) ((x) << 8) +#define DCU_THRESHOLD_OUT_BUF_LOW(x) (x) +#define DCU_UPDATE_MODE_MODE (1 << 31) +#define DCU_UPDATE_MODE_READREG (1 << 30) + +#define DCU_CTRLDESCLN_1_HEIGHT(x) ((x) << 16) +#define DCU_CTRLDESCLN_1_WIDTH(x) (x) +#define DCU_CTRLDESCLN_2_POSY(x) ((x) << 16) +#define DCU_CTRLDESCLN_2_POSX(x) (x) +#define DCU_CTRLDESCLN_4_EN (1 << 31) +#define DCU_CTRLDESCLN_4_TILE_EN (1 << 30) +#define DCU_CTRLDESCLN_4_DATA_SEL_CLUT (1 << 29) +#define DCU_CTRLDESCLN_4_SAFETY_EN (1 << 28) +#define DCU_CTRLDESCLN_4_TRANS(x) ((x) << 20) +#define DCU_CTRLDESCLN_4_BPP(x) ((x) << 16) +#define DCU_CTRLDESCLN_4_RLE_EN (1 << 15) +#define DCU_CTRLDESCLN_4_LUOFFS(x) ((x) << 4) +#define DCU_CTRLDESCLN_4_BB_ON (1 << 2) +#define DCU_CTRLDESCLN_4_AB(x) (x) +#define DCU_CTRLDESCLN_5_CKMAX_R(x) ((x) << 16) +#define DCU_CTRLDESCLN_5_CKMAX_G(x) ((x) << 8) +#define DCU_CTRLDESCLN_5_CKMAX_B(x) (x) +#define DCU_CTRLDESCLN_6_CKMIN_R(x) ((x) << 16) +#define DCU_CTRLDESCLN_6_CKMIN_G(x) ((x) << 8) +#define DCU_CTRLDESCLN_6_CKMIN_B(x) (x) +#define DCU_CTRLDESCLN_7_TILE_VER(x) ((x) << 16) +#define DCU_CTRLDESCLN_7_TILE_HOR(x) (x) +#define DCU_CTRLDESCLN_8_FG_FCOLOR(x) (x) +#define DCU_CTRLDESCLN_9_BG_BCOLOR(x) (x) + +#define BPP_16_RGB565 4 +#define BPP_24_RGB888 5 +#define BPP_32_ARGB8888 6 + +/* + * This setting is used for the TWR_LCD_RGB card + */ +static struct fb_videomode fsl_dcu_mode_480_272 = { + .name = "480x272-60", + .refresh = 60, + .xres = 480, + .yres = 272, + .pixclock = 91996, + .left_margin = 2, + .right_margin = 2, + .upper_margin = 1, + .lower_margin = 1, + .hsync_len = 41, + .vsync_len = 2, + .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + .vmode = FB_VMODE_NONINTERLACED +}; + +/* + * This setting is used for Siliconimage SiI9022A HDMI + */ +static struct fb_videomode fsl_dcu_mode_640_480 = { + .name = "640x480-60", + .refresh = 60, + .xres = 640, + .yres = 480, + .pixclock = 39722, + .left_margin = 48, + .right_margin = 16, + .upper_margin = 33, + .lower_margin = 10, + .hsync_len = 96, + .vsync_len = 2, + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, +}; + +/* + * DCU register map + */ +struct dcu_reg { + u32 desc_cursor[4]; + u32 mode; + u32 bgnd; + u32 disp_size; + u32 hsyn_para; + u32 vsyn_para; + u32 synpol; + u32 threshold; + u32 int_status; + u32 int_mask; + u32 colbar[8]; + u32 div_ratio; + u32 sign_calc[2]; + u32 crc_val; + u8 res_064[0x6c-0x64]; + u32 parr_err_status1; + u8 res_070[0x7c-0x70]; + u32 parr_err_status3; + u32 mparr_err_status1; + u8 res_084[0x90-0x84]; + u32 mparr_err_status3; + u32 threshold_inp_buf[2]; + u8 res_09c[0xa0-0x9c]; + u32 luma_comp; + u32 chroma_red; + u32 chroma_green; + u32 chroma_blue; + u32 crc_pos; + u32 lyr_intpol_en; + u32 lyr_luma_comp; + u32 lyr_chrm_red; + u32 lyr_chrm_grn; + u32 lyr_chrm_blue; + u8 res_0c4[0xcc-0xc8]; + u32 update_mode; + u32 underrun; + u8 res_0d4[0x100-0xd4]; + u32 gpr; + u32 slr_l[2]; + u32 slr_disp_size; + u32 slr_hvsync_para; + u32 slr_pol; + u32 slr_l_transp[2]; + u8 res_120[0x200-0x120]; + u32 ctrldescl[DCU_LAYER_MAX_NUM][16]; +}; + +static struct fb_info info; + +static void reset_total_layers(void) +{ + struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; + int i; + + for (i = 0; i < DCU_LAYER_MAX_NUM; i++) { + dcu_write32(®s->ctrldescl[i][0], 0); + dcu_write32(®s->ctrldescl[i][1], 0); + dcu_write32(®s->ctrldescl[i][2], 0); + dcu_write32(®s->ctrldescl[i][3], 0); + dcu_write32(®s->ctrldescl[i][4], 0); + dcu_write32(®s->ctrldescl[i][5], 0); + dcu_write32(®s->ctrldescl[i][6], 0); + dcu_write32(®s->ctrldescl[i][7], 0); + dcu_write32(®s->ctrldescl[i][8], 0); + dcu_write32(®s->ctrldescl[i][9], 0); + dcu_write32(®s->ctrldescl[i][10], 0); + } + + dcu_write32(®s->update_mode, DCU_UPDATE_MODE_READREG); +} + +static int layer_ctrldesc_init(int index, u32 pixel_format) +{ + struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; + unsigned int bpp = BPP_24_RGB888; + + dcu_write32(®s->ctrldescl[index][0], + DCU_CTRLDESCLN_1_HEIGHT(info.var.yres) | + DCU_CTRLDESCLN_1_WIDTH(info.var.xres)); + + dcu_write32(®s->ctrldescl[index][1], + DCU_CTRLDESCLN_2_POSY(0) | + DCU_CTRLDESCLN_2_POSX(0)); + + dcu_write32(®s->ctrldescl[index][2], (unsigned int)info.screen_base); + + switch (pixel_format) { + case 16: + bpp = BPP_16_RGB565; + break; + case 24: + bpp = BPP_24_RGB888; + break; + case 32: + bpp = BPP_32_ARGB8888; + break; + default: + printf("unsupported color depth: %u\n", pixel_format); + } + + dcu_write32(®s->ctrldescl[index][3], + DCU_CTRLDESCLN_4_EN | + DCU_CTRLDESCLN_4_TRANS(0xff) | + DCU_CTRLDESCLN_4_BPP(bpp) | + DCU_CTRLDESCLN_4_AB(0)); + + dcu_write32(®s->ctrldescl[index][4], + DCU_CTRLDESCLN_5_CKMAX_R(0xff) | + DCU_CTRLDESCLN_5_CKMAX_G(0xff) | + DCU_CTRLDESCLN_5_CKMAX_B(0xff)); + dcu_write32(®s->ctrldescl[index][5], + DCU_CTRLDESCLN_6_CKMIN_R(0) | + DCU_CTRLDESCLN_6_CKMIN_G(0) | + DCU_CTRLDESCLN_6_CKMIN_B(0)); + + dcu_write32(®s->ctrldescl[index][6], + DCU_CTRLDESCLN_7_TILE_VER(0) | + DCU_CTRLDESCLN_7_TILE_HOR(0)); + + dcu_write32(®s->ctrldescl[index][7], DCU_CTRLDESCLN_8_FG_FCOLOR(0)); + dcu_write32(®s->ctrldescl[index][8], DCU_CTRLDESCLN_9_BG_BCOLOR(0)); + + dcu_write32(®s->update_mode, DCU_UPDATE_MODE_READREG); + + return 0; +} + +int fsl_dcu_init(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; + + /* Memory allocation for framebuffer */ + info.screen_size = + info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8); + info.screen_base = (char *)memalign(ARCH_DMA_MINALIGN, + roundup(info.screen_size, ARCH_DMA_MINALIGN)); + memset(info.screen_base, 0, info.screen_size); + + reset_total_layers(); + div = dcu_set_pixel_clock(info.var.pixclock); + dcu_write32(®s->div_ratio, (div - 1)); + + dcu_write32(®s->disp_size, + DCU_DISP_SIZE_DELTA_Y(info.var.yres) | + DCU_DISP_SIZE_DELTA_X(info.var.xres / 16)); + + dcu_write32(®s->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_write32(®s->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_write32(®s->synpol, + DCU_SYN_POL_INV_PXCK_FALL | + DCU_SYN_POL_NEG_REMAIN | + DCU_SYN_POL_INV_VS_LOW | + DCU_SYN_POL_INV_HS_LOW); + + dcu_write32(®s->bgnd, + DCU_BGND_R(0) | DCU_BGND_G(0) | DCU_BGND_B(0)); + + dcu_write32(®s->mode, + DCU_MODE_BLEND_ITER(DCU_LAYER_MAX_NUM) | + DCU_MODE_RASTER_EN); + + dcu_write32(®s->threshold, + DCU_THRESHOLD_LS_BF_VS(0x3) | + DCU_THRESHOLD_OUT_BUF_HIGH(0x78) | + DCU_THRESHOLD_OUT_BUF_LOW(0)); + + mode = dcu_read32(®s->mode); + dcu_write32(®s->mode, mode | DCU_MODE_NORMAL); + + layer_ctrldesc_init(0, pixel_format); + + return 0; +} + +void *video_hw_init(void) +{ + 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, + &options)) + return NULL; + + /* Find the monitor port, which is a required option */ + if (!options) + return NULL; + if (strncmp(options, "monitor=", 8) != 0) + return NULL; + + switch (RESOLUTION(ctfb.winSizeX, ctfb.winSizeY)) { + case RESOLUTION(480, 272): + fsl_dcu_mode_db = &fsl_dcu_mode_480_272; + break; + case RESOLUTION(640, 480): + fsl_dcu_mode_db = &fsl_dcu_mode_640_480; + break; + default: + printf("unsupported resolution %ux%u\n", + ctfb.winSizeX, ctfb.winSizeY); + } + + 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) + return NULL; + + ctfb.frameAdrs = (unsigned int)info.screen_base; + ctfb.plnSizeX = ctfb.winSizeX; + ctfb.plnSizeY = ctfb.winSizeY; + + ctfb.gdfBytesPP = 4; + ctfb.gdfIndex = GDF_32BIT_X888RGB; + + ctfb.memSize = info.screen_size; + + return &ctfb; +} |