2 * Display driver for Allwinner SoCs.
4 * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
5 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
7 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/clock.h>
13 #include <asm/arch/display.h>
14 #include <asm/arch/gpio.h>
15 #include <asm/global_data.h>
20 #include <fdt_support.h>
23 #include "videomodes.h"
24 #include "hitachi_tx18d42vm_lcd.h"
27 #ifdef CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW
35 DECLARE_GLOBAL_DATA_PTR;
44 #define SUNXI_MONITOR_LAST sunxi_monitor_vga
46 struct sunxi_display {
47 GraphicDevice graphic_device;
48 enum sunxi_monitor monitor;
53 #ifdef CONFIG_VIDEO_HDMI
56 * Wait up to 200ms for value to be set in given part of reg.
58 static int await_completion(u32 *reg, u32 mask, u32 val)
60 unsigned long tmo = timer_get_us() + 200000;
62 while ((readl(reg) & mask) != val) {
63 if (timer_get_us() > tmo) {
64 printf("DDC: timeout reading EDID\n");
71 static int sunxi_hdmi_hpd_detect(int hpd_delay)
73 struct sunxi_ccm_reg * const ccm =
74 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
75 struct sunxi_hdmi_reg * const hdmi =
76 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
77 unsigned long tmo = timer_get_us() + hpd_delay * 1000;
79 /* Set pll3 to 300MHz */
80 clock_set_pll3(300000000);
82 /* Set hdmi parent to pll3 */
83 clrsetbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_PLL_MASK,
86 /* Set ahb gating to pass */
87 #ifdef CONFIG_SUNXI_GEN_SUN6I
88 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
90 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
93 setbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_GATE);
95 writel(SUNXI_HDMI_CTRL_ENABLE, &hdmi->ctrl);
96 writel(SUNXI_HDMI_PAD_CTRL0_HDP, &hdmi->pad_ctrl0);
98 while (timer_get_us() < tmo) {
99 if (readl(&hdmi->hpd) & SUNXI_HDMI_HPD_DETECT)
106 static void sunxi_hdmi_shutdown(void)
108 struct sunxi_ccm_reg * const ccm =
109 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
110 struct sunxi_hdmi_reg * const hdmi =
111 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
113 clrbits_le32(&hdmi->ctrl, SUNXI_HDMI_CTRL_ENABLE);
114 clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_GATE);
115 clrbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
116 #ifdef CONFIG_SUNXI_GEN_SUN6I
117 clrbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
122 static int sunxi_hdmi_ddc_do_command(u32 cmnd, int offset, int n)
124 struct sunxi_hdmi_reg * const hdmi =
125 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
127 setbits_le32(&hdmi->ddc_fifo_ctrl, SUNXI_HDMI_DDC_FIFO_CTRL_CLEAR);
128 writel(SUNXI_HMDI_DDC_ADDR_EDDC_SEGMENT(offset >> 8) |
129 SUNXI_HMDI_DDC_ADDR_EDDC_ADDR |
130 SUNXI_HMDI_DDC_ADDR_OFFSET(offset) |
131 SUNXI_HMDI_DDC_ADDR_SLAVE_ADDR, &hdmi->ddc_addr);
132 #ifndef CONFIG_MACH_SUN6I
133 writel(n, &hdmi->ddc_byte_count);
134 writel(cmnd, &hdmi->ddc_cmnd);
136 writel(n << 16 | cmnd, &hdmi->ddc_cmnd);
138 setbits_le32(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_START);
140 return await_completion(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_START, 0);
143 static int sunxi_hdmi_ddc_read(int offset, u8 *buf, int count)
145 struct sunxi_hdmi_reg * const hdmi =
146 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
155 if (sunxi_hdmi_ddc_do_command(
156 SUNXI_HDMI_DDC_CMND_EXPLICIT_EDDC_READ,
160 for (i = 0; i < n; i++)
161 *buf++ = readb(&hdmi->ddc_fifo_data);
170 static int sunxi_hdmi_edid_get_block(int block, u8 *buf)
175 r = sunxi_hdmi_ddc_read(block * 128, buf, 128);
178 r = edid_check_checksum(buf);
180 printf("EDID block %d: checksum error%s\n",
181 block, retries ? ", retrying" : "");
183 } while (r && retries--);
188 static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode)
190 struct edid1_info edid1;
191 struct edid_cea861_info cea681[4];
192 struct edid_detailed_timing *t =
193 (struct edid_detailed_timing *)edid1.monitor_details.timing;
194 struct sunxi_hdmi_reg * const hdmi =
195 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
196 struct sunxi_ccm_reg * const ccm =
197 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
198 int i, r, ext_blocks = 0;
200 /* SUNXI_HDMI_CTRL_ENABLE & PAD_CTRL0 are already set by hpd_detect */
201 writel(SUNXI_HDMI_PAD_CTRL1 | SUNXI_HDMI_PAD_CTRL1_HALVE,
203 writel(SUNXI_HDMI_PLL_CTRL | SUNXI_HDMI_PLL_CTRL_DIV(15),
205 writel(SUNXI_HDMI_PLL_DBG0_PLL3, &hdmi->pll_dbg0);
207 /* Reset i2c controller */
208 setbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_DDC_GATE);
209 writel(SUNXI_HMDI_DDC_CTRL_ENABLE |
210 SUNXI_HMDI_DDC_CTRL_SDA_ENABLE |
211 SUNXI_HMDI_DDC_CTRL_SCL_ENABLE |
212 SUNXI_HMDI_DDC_CTRL_RESET, &hdmi->ddc_ctrl);
213 if (await_completion(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_RESET, 0))
216 writel(SUNXI_HDMI_DDC_CLOCK, &hdmi->ddc_clock);
217 #ifndef CONFIG_MACH_SUN6I
218 writel(SUNXI_HMDI_DDC_LINE_CTRL_SDA_ENABLE |
219 SUNXI_HMDI_DDC_LINE_CTRL_SCL_ENABLE, &hdmi->ddc_line_ctrl);
222 r = sunxi_hdmi_edid_get_block(0, (u8 *)&edid1);
224 r = edid_check_info(&edid1);
226 printf("EDID: invalid EDID data\n");
231 ext_blocks = edid1.extension_flag;
234 for (i = 0; i < ext_blocks; i++) {
235 if (sunxi_hdmi_edid_get_block(1 + i,
236 (u8 *)&cea681[i]) != 0) {
243 /* Disable DDC engine, no longer needed */
244 clrbits_le32(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_ENABLE);
245 clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_DDC_GATE);
250 /* We want version 1.3 or 1.2 with detailed timing info */
251 if (edid1.version != 1 || (edid1.revision < 3 &&
252 !EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(edid1))) {
253 printf("EDID: unsupported version %d.%d\n",
254 edid1.version, edid1.revision);
258 /* Take the first usable detailed timing */
259 for (i = 0; i < 4; i++, t++) {
260 r = video_edid_dtd_to_ctfb_res_modes(t, mode);
265 printf("EDID: no usable detailed timing found\n");
269 /* Check for basic audio support, if found enable hdmi output */
270 sunxi_display.monitor = sunxi_monitor_dvi;
271 for (i = 0; i < ext_blocks; i++) {
272 if (cea681[i].extension_tag != EDID_CEA861_EXTENSION_TAG ||
273 cea681[i].revision < 2)
276 if (EDID_CEA861_SUPPORTS_BASIC_AUDIO(cea681[i]))
277 sunxi_display.monitor = sunxi_monitor_hdmi;
283 #endif /* CONFIG_VIDEO_HDMI */
285 #ifdef CONFIG_MACH_SUN4I
287 * Testing has shown that on sun4i the display backend engine does not have
288 * deep enough fifo-s causing flickering / tearing in full-hd mode due to
289 * fifo underruns. So on sun4i we use the display frontend engine to do the
290 * dma from memory, as the frontend does have deep enough fifo-s.
293 static const u32 sun4i_vert_coef[32] = {
294 0x00004000, 0x000140ff, 0x00033ffe, 0x00043ffd,
295 0x00063efc, 0xff083dfc, 0x000a3bfb, 0xff0d39fb,
296 0xff0f37fb, 0xff1136fa, 0xfe1433fb, 0xfe1631fb,
297 0xfd192ffb, 0xfd1c2cfb, 0xfd1f29fb, 0xfc2127fc,
298 0xfc2424fc, 0xfc2721fc, 0xfb291ffd, 0xfb2c1cfd,
299 0xfb2f19fd, 0xfb3116fe, 0xfb3314fe, 0xfa3611ff,
300 0xfb370fff, 0xfb390dff, 0xfb3b0a00, 0xfc3d08ff,
301 0xfc3e0600, 0xfd3f0400, 0xfe3f0300, 0xff400100,
304 static const u32 sun4i_horz_coef[64] = {
305 0x40000000, 0x00000000, 0x40fe0000, 0x0000ff03,
306 0x3ffd0000, 0x0000ff05, 0x3ffc0000, 0x0000ff06,
307 0x3efb0000, 0x0000ff08, 0x3dfb0000, 0x0000ff09,
308 0x3bfa0000, 0x0000fe0d, 0x39fa0000, 0x0000fe0f,
309 0x38fa0000, 0x0000fe10, 0x36fa0000, 0x0000fe12,
310 0x33fa0000, 0x0000fd16, 0x31fa0000, 0x0000fd18,
311 0x2ffa0000, 0x0000fd1a, 0x2cfa0000, 0x0000fc1e,
312 0x29fa0000, 0x0000fc21, 0x27fb0000, 0x0000fb23,
313 0x24fb0000, 0x0000fb26, 0x21fb0000, 0x0000fb29,
314 0x1ffc0000, 0x0000fa2b, 0x1cfc0000, 0x0000fa2e,
315 0x19fd0000, 0x0000fa30, 0x16fd0000, 0x0000fa33,
316 0x14fd0000, 0x0000fa35, 0x11fe0000, 0x0000fa37,
317 0x0ffe0000, 0x0000fa39, 0x0dfe0000, 0x0000fa3b,
318 0x0afe0000, 0x0000fa3e, 0x08ff0000, 0x0000fb3e,
319 0x06ff0000, 0x0000fb40, 0x05ff0000, 0x0000fc40,
320 0x03ff0000, 0x0000fd41, 0x01ff0000, 0x0000fe42,
323 static void sunxi_frontend_init(void)
325 struct sunxi_ccm_reg * const ccm =
326 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
327 struct sunxi_de_fe_reg * const de_fe =
328 (struct sunxi_de_fe_reg *)SUNXI_DE_FE0_BASE;
332 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE_FE0);
333 setbits_le32(&ccm->dram_clk_gate, 1 << CCM_DRAM_GATE_OFFSET_DE_FE0);
334 clock_set_de_mod_clock(&ccm->fe0_clk_cfg, 300000000);
336 setbits_le32(&de_fe->enable, SUNXI_DE_FE_ENABLE_EN);
338 for (i = 0; i < 32; i++) {
339 writel(sun4i_horz_coef[2 * i], &de_fe->ch0_horzcoef0[i]);
340 writel(sun4i_horz_coef[2 * i + 1], &de_fe->ch0_horzcoef1[i]);
341 writel(sun4i_vert_coef[i], &de_fe->ch0_vertcoef[i]);
342 writel(sun4i_horz_coef[2 * i], &de_fe->ch1_horzcoef0[i]);
343 writel(sun4i_horz_coef[2 * i + 1], &de_fe->ch1_horzcoef1[i]);
344 writel(sun4i_vert_coef[i], &de_fe->ch1_vertcoef[i]);
347 setbits_le32(&de_fe->frame_ctrl, SUNXI_DE_FE_FRAME_CTRL_COEF_RDY);
350 static void sunxi_frontend_mode_set(const struct ctfb_res_modes *mode,
351 unsigned int address)
353 struct sunxi_de_fe_reg * const de_fe =
354 (struct sunxi_de_fe_reg *)SUNXI_DE_FE0_BASE;
356 setbits_le32(&de_fe->bypass, SUNXI_DE_FE_BYPASS_CSC_BYPASS);
357 writel(CONFIG_SYS_SDRAM_BASE + address, &de_fe->ch0_addr);
358 writel(mode->xres * 4, &de_fe->ch0_stride);
359 writel(SUNXI_DE_FE_INPUT_FMT_ARGB8888, &de_fe->input_fmt);
360 writel(SUNXI_DE_FE_OUTPUT_FMT_ARGB8888, &de_fe->output_fmt);
362 writel(SUNXI_DE_FE_HEIGHT(mode->yres) | SUNXI_DE_FE_WIDTH(mode->xres),
364 writel(SUNXI_DE_FE_HEIGHT(mode->yres) | SUNXI_DE_FE_WIDTH(mode->xres),
365 &de_fe->ch0_outsize);
366 writel(SUNXI_DE_FE_FACTOR_INT(1), &de_fe->ch0_horzfact);
367 writel(SUNXI_DE_FE_FACTOR_INT(1), &de_fe->ch0_vertfact);
369 writel(SUNXI_DE_FE_HEIGHT(mode->yres) | SUNXI_DE_FE_WIDTH(mode->xres),
371 writel(SUNXI_DE_FE_HEIGHT(mode->yres) | SUNXI_DE_FE_WIDTH(mode->xres),
372 &de_fe->ch1_outsize);
373 writel(SUNXI_DE_FE_FACTOR_INT(1), &de_fe->ch1_horzfact);
374 writel(SUNXI_DE_FE_FACTOR_INT(1), &de_fe->ch1_vertfact);
376 setbits_le32(&de_fe->frame_ctrl, SUNXI_DE_FE_FRAME_CTRL_REG_RDY);
379 static void sunxi_frontend_enable(void)
381 struct sunxi_de_fe_reg * const de_fe =
382 (struct sunxi_de_fe_reg *)SUNXI_DE_FE0_BASE;
384 setbits_le32(&de_fe->frame_ctrl, SUNXI_DE_FE_FRAME_CTRL_FRM_START);
387 static void sunxi_frontend_init(void) {}
388 static void sunxi_frontend_mode_set(const struct ctfb_res_modes *mode,
389 unsigned int address) {}
390 static void sunxi_frontend_enable(void) {}
394 * This is the entity that mixes and matches the different layers and inputs.
395 * Allwinner calls it the back-end, but i like composer better.
397 static void sunxi_composer_init(void)
399 struct sunxi_ccm_reg * const ccm =
400 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
401 struct sunxi_de_be_reg * const de_be =
402 (struct sunxi_de_be_reg *)SUNXI_DE_BE0_BASE;
405 sunxi_frontend_init();
407 #ifdef CONFIG_SUNXI_GEN_SUN6I
409 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE_BE0);
413 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE_BE0);
414 #ifndef CONFIG_MACH_SUN4I /* On sun4i the frontend does the dma */
415 setbits_le32(&ccm->dram_clk_gate, 1 << CCM_DRAM_GATE_OFFSET_DE_BE0);
417 clock_set_de_mod_clock(&ccm->be0_clk_cfg, 300000000);
419 /* Engine bug, clear registers after reset */
420 for (i = 0x0800; i < 0x1000; i += 4)
421 writel(0, SUNXI_DE_BE0_BASE + i);
423 setbits_le32(&de_be->mode, SUNXI_DE_BE_MODE_ENABLE);
426 static void sunxi_composer_mode_set(const struct ctfb_res_modes *mode,
427 unsigned int address)
429 struct sunxi_de_be_reg * const de_be =
430 (struct sunxi_de_be_reg *)SUNXI_DE_BE0_BASE;
432 sunxi_frontend_mode_set(mode, address);
434 writel(SUNXI_DE_BE_HEIGHT(mode->yres) | SUNXI_DE_BE_WIDTH(mode->xres),
436 writel(SUNXI_DE_BE_HEIGHT(mode->yres) | SUNXI_DE_BE_WIDTH(mode->xres),
437 &de_be->layer0_size);
438 #ifndef CONFIG_MACH_SUN4I /* On sun4i the frontend does the dma */
439 writel(SUNXI_DE_BE_LAYER_STRIDE(mode->xres), &de_be->layer0_stride);
440 writel(address << 3, &de_be->layer0_addr_low32b);
441 writel(address >> 29, &de_be->layer0_addr_high4b);
443 writel(SUNXI_DE_BE_LAYER_ATTR0_SRC_FE0, &de_be->layer0_attr0_ctrl);
445 writel(SUNXI_DE_BE_LAYER_ATTR1_FMT_XRGB8888, &de_be->layer0_attr1_ctrl);
447 setbits_le32(&de_be->mode, SUNXI_DE_BE_MODE_LAYER0_ENABLE);
450 static void sunxi_composer_enable(void)
452 struct sunxi_de_be_reg * const de_be =
453 (struct sunxi_de_be_reg *)SUNXI_DE_BE0_BASE;
455 sunxi_frontend_enable();
457 setbits_le32(&de_be->reg_ctrl, SUNXI_DE_BE_REG_CTRL_LOAD_REGS);
458 setbits_le32(&de_be->mode, SUNXI_DE_BE_MODE_START);
462 * LCDC, what allwinner calls a CRTC, so timing controller and serializer.
464 static void sunxi_lcdc_pll_set(int tcon, int dotclock,
465 int *clk_div, int *clk_double)
467 struct sunxi_ccm_reg * const ccm =
468 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
469 int value, n, m, min_m, max_m, diff;
470 int best_n = 0, best_m = 0, best_diff = 0x0FFFFFFF;
474 #ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
478 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
487 * Find the lowest divider resulting in a matching clock, if there
488 * is no match, pick the closest lower clock, as monitors tend to
489 * not sync to higher frequencies.
491 for (m = min_m; m <= max_m; m++) {
492 n = (m * dotclock) / 3000;
494 if ((n >= 9) && (n <= 127)) {
495 value = (3000 * n) / m;
496 diff = dotclock - value;
497 if (diff < best_diff) {
505 /* These are just duplicates */
509 n = (m * dotclock) / 6000;
510 if ((n >= 9) && (n <= 127)) {
511 value = (6000 * n) / m;
512 diff = dotclock - value;
513 if (diff < best_diff) {
522 debug("dotclock: %dkHz = %dkHz: (%d * 3MHz * %d) / %d\n",
523 dotclock, (best_double + 1) * 3000 * best_n / best_m,
524 best_double + 1, best_n, best_m);
526 clock_set_pll3(best_n * 3000000);
529 writel(CCM_LCD_CH0_CTRL_GATE | CCM_LCD_CH0_CTRL_RST |
530 (best_double ? CCM_LCD_CH0_CTRL_PLL3_2X :
531 CCM_LCD_CH0_CTRL_PLL3),
532 &ccm->lcd0_ch0_clk_cfg);
534 writel(CCM_LCD_CH1_CTRL_GATE |
535 (best_double ? CCM_LCD_CH1_CTRL_PLL3_2X :
536 CCM_LCD_CH1_CTRL_PLL3) |
537 CCM_LCD_CH1_CTRL_M(best_m), &ccm->lcd0_ch1_clk_cfg);
541 *clk_double = best_double;
544 static void sunxi_lcdc_init(void)
546 struct sunxi_ccm_reg * const ccm =
547 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
548 struct sunxi_lcdc_reg * const lcdc =
549 (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
552 #ifdef CONFIG_SUNXI_GEN_SUN6I
553 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_LCD0);
555 setbits_le32(&ccm->lcd0_ch0_clk_cfg, CCM_LCD_CH0_CTRL_RST);
559 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_LCD0);
560 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
561 setbits_le32(&ccm->lvds_clk_cfg, CCM_LVDS_CTRL_RST);
565 writel(0, &lcdc->ctrl); /* Disable tcon */
566 writel(0, &lcdc->int0); /* Disable all interrupts */
568 /* Disable tcon0 dot clock */
569 clrbits_le32(&lcdc->tcon0_dclk, SUNXI_LCDC_TCON0_DCLK_ENABLE);
571 /* Set all io lines to tristate */
572 writel(0xffffffff, &lcdc->tcon0_io_tristate);
573 writel(0xffffffff, &lcdc->tcon1_io_tristate);
576 static void sunxi_lcdc_enable(void)
578 struct sunxi_lcdc_reg * const lcdc =
579 (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
581 setbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_TCON_ENABLE);
582 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
583 setbits_le32(&lcdc->tcon0_lvds_intf, SUNXI_LCDC_TCON0_LVDS_INTF_ENABLE);
584 setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0);
585 setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_UPDATE);
586 udelay(2); /* delay at least 1200 ns */
587 setbits_le32(&lcdc->lvds_ana1, SUNXI_LCDC_LVDS_ANA1_INIT1);
588 udelay(1); /* delay at least 120 ns */
589 setbits_le32(&lcdc->lvds_ana1, SUNXI_LCDC_LVDS_ANA1_INIT2);
590 setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_UPDATE);
594 static void sunxi_lcdc_panel_enable(void)
599 * Start with backlight disabled to avoid the screen flashing to
600 * white while the lcd inits.
602 pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_EN);
604 gpio_request(pin, "lcd_backlight_enable");
605 gpio_direction_output(pin, 0);
608 pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_PWM);
610 gpio_request(pin, "lcd_backlight_pwm");
611 gpio_direction_output(pin, PWM_OFF);
614 reset_pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_RESET);
615 if (reset_pin >= 0) {
616 gpio_request(reset_pin, "lcd_reset");
617 gpio_direction_output(reset_pin, 0); /* Assert reset */
620 /* Give the backlight some time to turn off and power up the panel. */
622 pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_POWER);
624 gpio_request(pin, "lcd_power");
625 gpio_direction_output(pin, 1);
629 gpio_direction_output(reset_pin, 1); /* De-assert reset */
632 static void sunxi_lcdc_backlight_enable(void)
637 * We want to have scanned out at least one frame before enabling the
638 * backlight to avoid the screen flashing to white when we enable it.
642 pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_EN);
644 gpio_direction_output(pin, 1);
646 pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_BL_PWM);
648 gpio_direction_output(pin, PWM_ON);
651 static int sunxi_lcdc_get_clk_delay(const struct ctfb_res_modes *mode)
655 delay = mode->lower_margin + mode->vsync_len + mode->upper_margin - 2;
656 return (delay > 30) ? 30 : delay;
659 static void sunxi_lcdc_tcon0_mode_set(const struct ctfb_res_modes *mode,
660 bool for_ext_vga_dac)
662 struct sunxi_lcdc_reg * const lcdc =
663 (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
664 int bp, clk_delay, clk_div, clk_double, pin, total, val;
666 for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++)
667 #ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
668 sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
670 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
671 sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LVDS0);
674 sunxi_lcdc_pll_set(0, mode->pixclock_khz, &clk_div, &clk_double);
677 clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
678 SUNXI_LCDC_CTRL_IO_MAP_TCON0);
680 clk_delay = sunxi_lcdc_get_clk_delay(mode);
681 writel(SUNXI_LCDC_TCON0_CTRL_ENABLE |
682 SUNXI_LCDC_TCON0_CTRL_CLK_DELAY(clk_delay), &lcdc->tcon0_ctrl);
684 writel(SUNXI_LCDC_TCON0_DCLK_ENABLE |
685 SUNXI_LCDC_TCON0_DCLK_DIV(clk_div), &lcdc->tcon0_dclk);
687 writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
688 &lcdc->tcon0_timing_active);
690 bp = mode->hsync_len + mode->left_margin;
691 total = mode->xres + mode->right_margin + bp;
692 writel(SUNXI_LCDC_TCON0_TIMING_H_TOTAL(total) |
693 SUNXI_LCDC_TCON0_TIMING_H_BP(bp), &lcdc->tcon0_timing_h);
695 bp = mode->vsync_len + mode->upper_margin;
696 total = mode->yres + mode->lower_margin + bp;
697 writel(SUNXI_LCDC_TCON0_TIMING_V_TOTAL(total) |
698 SUNXI_LCDC_TCON0_TIMING_V_BP(bp), &lcdc->tcon0_timing_v);
700 #ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
701 writel(SUNXI_LCDC_X(mode->hsync_len) | SUNXI_LCDC_Y(mode->vsync_len),
702 &lcdc->tcon0_timing_sync);
704 writel(0, &lcdc->tcon0_hv_intf);
705 writel(0, &lcdc->tcon0_cpu_intf);
707 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
708 val = (sunxi_display.depth == 18) ? 1 : 0;
709 writel(SUNXI_LCDC_TCON0_LVDS_INTF_BITWIDTH(val), &lcdc->tcon0_lvds_intf);
712 if (sunxi_display.depth == 18 || sunxi_display.depth == 16) {
713 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[0]);
714 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[1]);
715 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[2]);
716 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[3]);
717 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[4]);
718 writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[5]);
719 writel(SUNXI_LCDC_TCON0_FRM_TAB0, &lcdc->tcon0_frm_table[0]);
720 writel(SUNXI_LCDC_TCON0_FRM_TAB1, &lcdc->tcon0_frm_table[1]);
721 writel(SUNXI_LCDC_TCON0_FRM_TAB2, &lcdc->tcon0_frm_table[2]);
722 writel(SUNXI_LCDC_TCON0_FRM_TAB3, &lcdc->tcon0_frm_table[3]);
723 writel(((sunxi_display.depth == 18) ?
724 SUNXI_LCDC_TCON0_FRM_CTRL_RGB666 :
725 SUNXI_LCDC_TCON0_FRM_CTRL_RGB565),
726 &lcdc->tcon0_frm_ctrl);
729 val = SUNXI_LCDC_TCON0_IO_POL_DCLK_PHASE(CONFIG_VIDEO_LCD_DCLK_PHASE);
730 if (!(mode->sync & FB_SYNC_HOR_HIGH_ACT))
731 val |= SUNXI_LCDC_TCON_HSYNC_MASK;
732 if (!(mode->sync & FB_SYNC_VERT_HIGH_ACT))
733 val |= SUNXI_LCDC_TCON_VSYNC_MASK;
735 #ifdef CONFIG_VIDEO_VGA_VIA_LCD_FORCE_SYNC_ACTIVE_HIGH
739 writel(val, &lcdc->tcon0_io_polarity);
741 writel(0, &lcdc->tcon0_io_tristate);
744 #if defined CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA
745 static void sunxi_lcdc_tcon1_mode_set(const struct ctfb_res_modes *mode,
746 int *clk_div, int *clk_double,
747 bool use_portd_hvsync)
749 struct sunxi_lcdc_reg * const lcdc =
750 (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
751 int bp, clk_delay, total, val;
754 clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
755 SUNXI_LCDC_CTRL_IO_MAP_TCON1);
757 clk_delay = sunxi_lcdc_get_clk_delay(mode);
758 writel(SUNXI_LCDC_TCON1_CTRL_ENABLE |
759 SUNXI_LCDC_TCON1_CTRL_CLK_DELAY(clk_delay), &lcdc->tcon1_ctrl);
761 writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
762 &lcdc->tcon1_timing_source);
763 writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
764 &lcdc->tcon1_timing_scale);
765 writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
766 &lcdc->tcon1_timing_out);
768 bp = mode->hsync_len + mode->left_margin;
769 total = mode->xres + mode->right_margin + bp;
770 writel(SUNXI_LCDC_TCON1_TIMING_H_TOTAL(total) |
771 SUNXI_LCDC_TCON1_TIMING_H_BP(bp), &lcdc->tcon1_timing_h);
773 bp = mode->vsync_len + mode->upper_margin;
774 total = mode->yres + mode->lower_margin + bp;
775 writel(SUNXI_LCDC_TCON1_TIMING_V_TOTAL(total) |
776 SUNXI_LCDC_TCON1_TIMING_V_BP(bp), &lcdc->tcon1_timing_v);
778 writel(SUNXI_LCDC_X(mode->hsync_len) | SUNXI_LCDC_Y(mode->vsync_len),
779 &lcdc->tcon1_timing_sync);
781 if (use_portd_hvsync) {
782 sunxi_gpio_set_cfgpin(SUNXI_GPD(26), SUNXI_GPD_LCD0);
783 sunxi_gpio_set_cfgpin(SUNXI_GPD(27), SUNXI_GPD_LCD0);
786 if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
787 val |= SUNXI_LCDC_TCON_HSYNC_MASK;
788 if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
789 val |= SUNXI_LCDC_TCON_VSYNC_MASK;
790 writel(val, &lcdc->tcon1_io_polarity);
792 clrbits_le32(&lcdc->tcon1_io_tristate,
793 SUNXI_LCDC_TCON_VSYNC_MASK |
794 SUNXI_LCDC_TCON_HSYNC_MASK);
796 sunxi_lcdc_pll_set(1, mode->pixclock_khz, clk_div, clk_double);
798 #endif /* CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA */
800 #ifdef CONFIG_VIDEO_HDMI
802 static void sunxi_hdmi_setup_info_frames(const struct ctfb_res_modes *mode)
804 struct sunxi_hdmi_reg * const hdmi =
805 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
807 u8 avi_info_frame[17] = {
808 0x82, 0x02, 0x0d, 0x00, 0x12, 0x00, 0x88, 0x00,
809 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
812 u8 vendor_info_frame[19] = {
813 0x81, 0x01, 0x06, 0x29, 0x03, 0x0c, 0x00, 0x40,
814 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
819 if (mode->pixclock_khz <= 27000)
820 avi_info_frame[5] = 0x40; /* SD-modes, ITU601 colorspace */
822 avi_info_frame[5] = 0x80; /* HD-modes, ITU709 colorspace */
824 if (mode->xres * 100 / mode->yres < 156)
825 avi_info_frame[5] |= 0x18; /* 4 : 3 */
827 avi_info_frame[5] |= 0x28; /* 16 : 9 */
829 for (i = 0; i < ARRAY_SIZE(avi_info_frame); i++)
830 checksum += avi_info_frame[i];
832 avi_info_frame[3] = 0x100 - checksum;
834 for (i = 0; i < ARRAY_SIZE(avi_info_frame); i++)
835 writeb(avi_info_frame[i], &hdmi->avi_info_frame[i]);
837 writel(SUNXI_HDMI_QCP_PACKET0, &hdmi->qcp_packet0);
838 writel(SUNXI_HDMI_QCP_PACKET1, &hdmi->qcp_packet1);
840 for (i = 0; i < ARRAY_SIZE(vendor_info_frame); i++)
841 writeb(vendor_info_frame[i], &hdmi->vendor_info_frame[i]);
843 writel(SUNXI_HDMI_PKT_CTRL0, &hdmi->pkt_ctrl0);
844 writel(SUNXI_HDMI_PKT_CTRL1, &hdmi->pkt_ctrl1);
846 setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_HDMI);
849 static void sunxi_hdmi_mode_set(const struct ctfb_res_modes *mode,
850 int clk_div, int clk_double)
852 struct sunxi_hdmi_reg * const hdmi =
853 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
856 /* Write clear interrupt status bits */
857 writel(SUNXI_HDMI_IRQ_STATUS_BITS, &hdmi->irq);
859 if (sunxi_display.monitor == sunxi_monitor_hdmi)
860 sunxi_hdmi_setup_info_frames(mode);
862 /* Set input sync enable */
863 writel(SUNXI_HDMI_UNKNOWN_INPUT_SYNC, &hdmi->unknown);
865 /* Init various registers, select pll3 as clock source */
866 writel(SUNXI_HDMI_VIDEO_POL_TX_CLK, &hdmi->video_polarity);
867 writel(SUNXI_HDMI_PAD_CTRL0_RUN, &hdmi->pad_ctrl0);
868 writel(SUNXI_HDMI_PAD_CTRL1, &hdmi->pad_ctrl1);
869 writel(SUNXI_HDMI_PLL_CTRL, &hdmi->pll_ctrl);
870 writel(SUNXI_HDMI_PLL_DBG0_PLL3, &hdmi->pll_dbg0);
872 /* Setup clk div and doubler */
873 clrsetbits_le32(&hdmi->pll_ctrl, SUNXI_HDMI_PLL_CTRL_DIV_MASK,
874 SUNXI_HDMI_PLL_CTRL_DIV(clk_div));
876 setbits_le32(&hdmi->pad_ctrl1, SUNXI_HDMI_PAD_CTRL1_HALVE);
878 /* Setup timing registers */
879 writel(SUNXI_HDMI_Y(mode->yres) | SUNXI_HDMI_X(mode->xres),
882 x = mode->hsync_len + mode->left_margin;
883 y = mode->vsync_len + mode->upper_margin;
884 writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_bp);
886 x = mode->right_margin;
887 y = mode->lower_margin;
888 writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_fp);
892 writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_spw);
894 if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
895 setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_HOR);
897 if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
898 setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_VER);
901 static void sunxi_hdmi_enable(void)
903 struct sunxi_hdmi_reg * const hdmi =
904 (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
907 setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_ENABLE);
910 #endif /* CONFIG_VIDEO_HDMI */
912 #ifdef CONFIG_VIDEO_VGA
914 static void sunxi_vga_mode_set(void)
916 struct sunxi_ccm_reg * const ccm =
917 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
918 struct sunxi_tve_reg * const tve =
919 (struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
922 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_TVE0);
924 /* Set TVE in VGA mode */
925 writel(SUNXI_TVE_GCTRL_DAC_INPUT(0, 1) |
926 SUNXI_TVE_GCTRL_DAC_INPUT(1, 2) |
927 SUNXI_TVE_GCTRL_DAC_INPUT(2, 3), &tve->gctrl);
928 writel(SUNXI_TVE_GCTRL_CFG0_VGA, &tve->cfg0);
929 writel(SUNXI_TVE_GCTRL_DAC_CFG0_VGA, &tve->dac_cfg0);
930 writel(SUNXI_TVE_GCTRL_UNKNOWN1_VGA, &tve->unknown1);
933 static void sunxi_vga_enable(void)
935 struct sunxi_tve_reg * const tve =
936 (struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
938 setbits_le32(&tve->gctrl, SUNXI_TVE_GCTRL_ENABLE);
941 #endif /* CONFIG_VIDEO_VGA */
943 static void sunxi_drc_init(void)
945 #ifdef CONFIG_SUNXI_GEN_SUN6I
946 struct sunxi_ccm_reg * const ccm =
947 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
949 /* On sun6i the drc must be clocked even when in pass-through mode */
950 #ifdef CONFIG_MACH_SUN8I_A33
951 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_SAT);
953 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DRC0);
954 clock_set_de_mod_clock(&ccm->iep_drc0_clk_cfg, 300000000);
958 #ifdef CONFIG_VIDEO_VGA_VIA_LCD
959 static void sunxi_vga_external_dac_enable(void)
963 pin = sunxi_name_to_gpio(CONFIG_VIDEO_VGA_EXTERNAL_DAC_EN);
965 gpio_request(pin, "vga_enable");
966 gpio_direction_output(pin, 1);
969 #endif /* CONFIG_VIDEO_VGA_VIA_LCD */
971 #ifdef CONFIG_VIDEO_LCD_SSD2828
972 static int sunxi_ssd2828_init(const struct ctfb_res_modes *mode)
974 struct ssd2828_config cfg = {
975 .csx_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_CS),
976 .sck_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_SCLK),
977 .sdi_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_MOSI),
978 .sdo_pin = name_to_gpio(CONFIG_VIDEO_LCD_SPI_MISO),
979 .reset_pin = name_to_gpio(CONFIG_VIDEO_LCD_SSD2828_RESET),
980 .ssd2828_tx_clk_khz = CONFIG_VIDEO_LCD_SSD2828_TX_CLK * 1000,
981 .ssd2828_color_depth = 24,
982 #ifdef CONFIG_VIDEO_LCD_PANEL_MIPI_4_LANE_513_MBPS_VIA_SSD2828
983 .mipi_dsi_number_of_data_lanes = 4,
984 .mipi_dsi_bitrate_per_data_lane_mbps = 513,
985 .mipi_dsi_delay_after_exit_sleep_mode_ms = 100,
986 .mipi_dsi_delay_after_set_display_on_ms = 200
988 #error MIPI LCD panel needs configuration parameters
992 if (cfg.csx_pin == -1 || cfg.sck_pin == -1 || cfg.sdi_pin == -1) {
993 printf("SSD2828: SPI pins are not properly configured\n");
996 if (cfg.reset_pin == -1) {
997 printf("SSD2828: Reset pin is not properly configured\n");
1001 return ssd2828_init(&cfg, mode);
1003 #endif /* CONFIG_VIDEO_LCD_SSD2828 */
1005 static void sunxi_engines_init(void)
1007 sunxi_composer_init();
1012 static void sunxi_mode_set(const struct ctfb_res_modes *mode,
1013 unsigned int address)
1015 int __maybe_unused clk_div, clk_double;
1017 switch (sunxi_display.monitor) {
1018 case sunxi_monitor_none:
1020 case sunxi_monitor_dvi:
1021 case sunxi_monitor_hdmi:
1022 #ifdef CONFIG_VIDEO_HDMI
1023 sunxi_composer_mode_set(mode, address);
1024 sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 0);
1025 sunxi_hdmi_mode_set(mode, clk_div, clk_double);
1026 sunxi_composer_enable();
1027 sunxi_lcdc_enable();
1028 sunxi_hdmi_enable();
1031 case sunxi_monitor_lcd:
1032 sunxi_lcdc_panel_enable();
1033 if (IS_ENABLED(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM)) {
1034 mdelay(50); /* Wait for lcd controller power on */
1035 hitachi_tx18d42vm_init();
1037 if (IS_ENABLED(CONFIG_VIDEO_LCD_TL059WV5C0)) {
1038 unsigned int orig_i2c_bus = i2c_get_bus_num();
1039 i2c_set_bus_num(CONFIG_VIDEO_LCD_I2C_BUS);
1040 i2c_reg_write(0x5c, 0x04, 0x42); /* Turn on the LCD */
1041 i2c_set_bus_num(orig_i2c_bus);
1043 sunxi_composer_mode_set(mode, address);
1044 sunxi_lcdc_tcon0_mode_set(mode, false);
1045 sunxi_composer_enable();
1046 sunxi_lcdc_enable();
1047 #ifdef CONFIG_VIDEO_LCD_SSD2828
1048 sunxi_ssd2828_init(mode);
1050 sunxi_lcdc_backlight_enable();
1052 case sunxi_monitor_vga:
1053 #ifdef CONFIG_VIDEO_VGA
1054 sunxi_composer_mode_set(mode, address);
1055 sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 1);
1056 sunxi_vga_mode_set();
1057 sunxi_composer_enable();
1058 sunxi_lcdc_enable();
1060 #elif defined CONFIG_VIDEO_VGA_VIA_LCD
1061 sunxi_composer_mode_set(mode, address);
1062 sunxi_lcdc_tcon0_mode_set(mode, true);
1063 sunxi_composer_enable();
1064 sunxi_lcdc_enable();
1065 sunxi_vga_external_dac_enable();
1071 static const char *sunxi_get_mon_desc(enum sunxi_monitor monitor)
1074 case sunxi_monitor_none: return "none";
1075 case sunxi_monitor_dvi: return "dvi";
1076 case sunxi_monitor_hdmi: return "hdmi";
1077 case sunxi_monitor_lcd: return "lcd";
1078 case sunxi_monitor_vga: return "vga";
1080 return NULL; /* never reached */
1083 ulong board_get_usable_ram_top(ulong total_size)
1085 return gd->ram_top - CONFIG_SUNXI_MAX_FB_SIZE;
1088 void *video_hw_init(void)
1090 static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
1091 const struct ctfb_res_modes *mode;
1092 struct ctfb_res_modes custom;
1093 const char *options;
1094 #ifdef CONFIG_VIDEO_HDMI
1095 int ret, hpd, hpd_delay, edid;
1098 char *lcd_mode = CONFIG_VIDEO_LCD_MODE;
1101 memset(&sunxi_display, 0, sizeof(struct sunxi_display));
1103 video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode,
1104 &sunxi_display.depth, &options);
1105 #ifdef CONFIG_VIDEO_HDMI
1106 hpd = video_get_option_int(options, "hpd", 1);
1107 hpd_delay = video_get_option_int(options, "hpd_delay", 500);
1108 edid = video_get_option_int(options, "edid", 1);
1109 sunxi_display.monitor = sunxi_monitor_dvi;
1110 #elif defined CONFIG_VIDEO_VGA_VIA_LCD
1111 sunxi_display.monitor = sunxi_monitor_vga;
1113 sunxi_display.monitor = sunxi_monitor_lcd;
1115 video_get_option_string(options, "monitor", mon, sizeof(mon),
1116 sunxi_get_mon_desc(sunxi_display.monitor));
1117 for (i = 0; i <= SUNXI_MONITOR_LAST; i++) {
1118 if (strcmp(mon, sunxi_get_mon_desc(i)) == 0) {
1119 sunxi_display.monitor = i;
1123 if (i > SUNXI_MONITOR_LAST)
1124 printf("Unknown monitor: '%s', falling back to '%s'\n",
1125 mon, sunxi_get_mon_desc(sunxi_display.monitor));
1127 #ifdef CONFIG_VIDEO_HDMI
1128 /* If HDMI/DVI is selected do HPD & EDID, and handle fallback */
1129 if (sunxi_display.monitor == sunxi_monitor_dvi ||
1130 sunxi_display.monitor == sunxi_monitor_hdmi) {
1131 /* Always call hdp_detect, as it also enables clocks, etc. */
1132 ret = sunxi_hdmi_hpd_detect(hpd_delay);
1134 printf("HDMI connected: ");
1135 if (edid && sunxi_hdmi_edid_get_mode(&custom) == 0)
1138 sunxi_hdmi_shutdown();
1139 /* Fallback to lcd / vga / none */
1141 sunxi_display.monitor = sunxi_monitor_lcd;
1143 #if defined CONFIG_VIDEO_VGA_VIA_LCD || defined CONFIG_VIDEO_VGA
1144 sunxi_display.monitor = sunxi_monitor_vga;
1146 sunxi_display.monitor = sunxi_monitor_none;
1149 } /* else continue with hdmi/dvi without a cable connected */
1153 switch (sunxi_display.monitor) {
1154 case sunxi_monitor_none:
1156 case sunxi_monitor_dvi:
1157 case sunxi_monitor_hdmi:
1158 #ifdef CONFIG_VIDEO_HDMI
1161 printf("HDMI/DVI not supported on this board\n");
1162 sunxi_display.monitor = sunxi_monitor_none;
1165 case sunxi_monitor_lcd:
1167 sunxi_display.depth = video_get_params(&custom, lcd_mode);
1171 printf("LCD not supported on this board\n");
1172 sunxi_display.monitor = sunxi_monitor_none;
1174 case sunxi_monitor_vga:
1175 #if defined CONFIG_VIDEO_VGA_VIA_LCD || defined CONFIG_VIDEO_VGA
1176 sunxi_display.depth = 18;
1179 printf("VGA not supported on this board\n");
1180 sunxi_display.monitor = sunxi_monitor_none;
1185 if (mode->vmode != FB_VMODE_NONINTERLACED) {
1186 printf("Only non-interlaced modes supported, falling back to 1024x768\n");
1187 mode = &res_mode_init[RES_MODE_1024x768];
1189 printf("Setting up a %dx%d %s console\n", mode->xres,
1190 mode->yres, sunxi_get_mon_desc(sunxi_display.monitor));
1193 sunxi_display.fb_size =
1194 (mode->xres * mode->yres * 4 + 0xfff) & ~0xfff;
1195 if (sunxi_display.fb_size > CONFIG_SUNXI_MAX_FB_SIZE) {
1196 printf("Error need %dkB for fb, but only %dkB is reserved\n",
1197 sunxi_display.fb_size >> 10,
1198 CONFIG_SUNXI_MAX_FB_SIZE >> 10);
1202 gd->fb_base = gd->bd->bi_dram[0].start +
1203 gd->bd->bi_dram[0].size - sunxi_display.fb_size;
1204 sunxi_engines_init();
1205 sunxi_mode_set(mode, gd->fb_base - CONFIG_SYS_SDRAM_BASE);
1208 * These are the only members of this structure that are used. All the
1209 * others are driver specific. There is nothing to decribe pitch or
1210 * stride, but we are lucky with our hw.
1212 graphic_device->frameAdrs = gd->fb_base;
1213 graphic_device->gdfIndex = GDF_32BIT_X888RGB;
1214 graphic_device->gdfBytesPP = 4;
1215 graphic_device->winSizeX = mode->xres;
1216 graphic_device->winSizeY = mode->yres;
1218 return graphic_device;
1224 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB)
1225 int sunxi_simplefb_setup(void *blob)
1227 static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
1230 const char *pipeline = NULL;
1232 #ifdef CONFIG_MACH_SUN4I
1233 #define PIPELINE_PREFIX "de_fe0-"
1235 #define PIPELINE_PREFIX
1238 switch (sunxi_display.monitor) {
1239 case sunxi_monitor_none:
1241 case sunxi_monitor_dvi:
1242 case sunxi_monitor_hdmi:
1243 pipeline = PIPELINE_PREFIX "de_be0-lcd0-hdmi";
1245 case sunxi_monitor_lcd:
1246 pipeline = PIPELINE_PREFIX "de_be0-lcd0";
1248 case sunxi_monitor_vga:
1249 #ifdef CONFIG_VIDEO_VGA
1250 pipeline = PIPELINE_PREFIX "de_be0-lcd0-tve0";
1251 #elif defined CONFIG_VIDEO_VGA_VIA_LCD
1252 pipeline = PIPELINE_PREFIX "de_be0-lcd0";
1257 /* Find a prefilled simpefb node, matching out pipeline config */
1258 offset = fdt_node_offset_by_compatible(blob, -1,
1259 "allwinner,simple-framebuffer");
1260 while (offset >= 0) {
1261 ret = fdt_find_string(blob, offset, "allwinner,pipeline",
1265 offset = fdt_node_offset_by_compatible(blob, offset,
1266 "allwinner,simple-framebuffer");
1269 eprintf("Cannot setup simplefb: node not found\n");
1270 return 0; /* Keep older kernels working */
1274 * Do not report the framebuffer as free RAM to the OS, note we cannot
1275 * use fdt_add_mem_rsv() here, because then it is still seen as RAM,
1276 * and e.g. Linux refuses to iomap RAM on ARM, see:
1277 * linux/arch/arm/mm/ioremap.c around line 301.
1279 start = gd->bd->bi_dram[0].start;
1280 size = gd->bd->bi_dram[0].size - sunxi_display.fb_size;
1281 ret = fdt_fixup_memory_banks(blob, &start, &size, 1);
1283 eprintf("Cannot setup simplefb: Error reserving memory\n");
1287 ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base,
1288 graphic_device->winSizeX, graphic_device->winSizeY,
1289 graphic_device->winSizeX * graphic_device->gdfBytesPP,
1292 eprintf("Cannot setup simplefb: Error setting properties\n");
1296 #endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */