diff options
Diffstat (limited to 'roms/u-boot/drivers/video/atmel_hlcdfb.c')
| -rw-r--r-- | roms/u-boot/drivers/video/atmel_hlcdfb.c | 569 |
1 files changed, 569 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/video/atmel_hlcdfb.c b/roms/u-boot/drivers/video/atmel_hlcdfb.c new file mode 100644 index 000000000..c7b59b71e --- /dev/null +++ b/roms/u-boot/drivers/video/atmel_hlcdfb.c @@ -0,0 +1,569 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for AT91/AT32 MULTI LAYER LCD Controller + * + * Copyright (C) 2012 Atmel Corporation + */ + +#include <common.h> +#include <cpu_func.h> +#include <log.h> +#include <malloc.h> +#include <part.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch/gpio.h> +#include <asm/arch/clk.h> +#include <clk.h> +#include <dm.h> +#include <fdtdec.h> +#include <lcd.h> +#include <video.h> +#include <wait_bit.h> +#include <atmel_hlcdc.h> +#include <linux/bug.h> + +#if defined(CONFIG_LCD_LOGO) +#include <bmp_logo.h> +#endif + +DECLARE_GLOBAL_DATA_PTR; + +#ifndef CONFIG_DM_VIDEO + +/* configurable parameters */ +#define ATMEL_LCDC_CVAL_DEFAULT 0xc8 +#define ATMEL_LCDC_DMA_BURST_LEN 8 +#ifndef ATMEL_LCDC_GUARD_TIME +#define ATMEL_LCDC_GUARD_TIME 1 +#endif + +#define ATMEL_LCDC_FIFO_SIZE 512 + +/* + * the CLUT register map as following + * RCLUT(24 ~ 16), GCLUT(15 ~ 8), BCLUT(7 ~ 0) + */ +void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue) +{ + writel(panel_info.mmio + ATMEL_LCDC_LUT(regno), + ((red << LCDC_BASECLUT_RCLUT_Pos) & LCDC_BASECLUT_RCLUT_Msk) + | ((green << LCDC_BASECLUT_GCLUT_Pos) & LCDC_BASECLUT_GCLUT_Msk) + | ((blue << LCDC_BASECLUT_BCLUT_Pos) & LCDC_BASECLUT_BCLUT_Msk)); +} + +ushort *configuration_get_cmap(void) +{ +#if defined(CONFIG_LCD_LOGO) + return bmp_logo_palette; +#else + return NULL; +#endif +} + +void lcd_ctrl_init(void *lcdbase) +{ + unsigned long value; + struct lcd_dma_desc *desc; + struct atmel_hlcd_regs *regs; + int ret; + + if (!has_lcdc()) + return; /* No lcdc */ + + regs = (struct atmel_hlcd_regs *)panel_info.mmio; + + /* Disable DISP signal */ + writel(LCDC_LCDDIS_DISPDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_DISPSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable synchronization */ + writel(LCDC_LCDDIS_SYNCDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_LCDSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable pixel clock */ + writel(LCDC_LCDDIS_CLKDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_CLKSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable PWM */ + writel(LCDC_LCDDIS_PWMDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_PWMSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + + /* Set pixel clock */ + value = get_lcdc_clk_rate(0) / panel_info.vl_clk; + if (get_lcdc_clk_rate(0) % panel_info.vl_clk) + value++; + + if (value < 1) { + /* Using system clock as pixel clock */ + writel(LCDC_LCDCFG0_CLKDIV(0) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | panel_info.vl_clk_pol + | LCDC_LCDCFG0_CLKSEL, + ®s->lcdc_lcdcfg0); + + } else { + writel(LCDC_LCDCFG0_CLKDIV(value - 2) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | panel_info.vl_clk_pol, + ®s->lcdc_lcdcfg0); + } + + /* Initialize control register 5 */ + value = 0; + + value |= panel_info.vl_sync; + +#ifndef LCD_OUTPUT_BPP + /* Output is 24bpp */ + value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP; +#else + switch (LCD_OUTPUT_BPP) { + case 12: + value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP; + break; + case 16: + value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP; + break; + case 18: + value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP; + break; + case 24: + value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP; + break; + default: + BUG(); + break; + } +#endif + + value |= LCDC_LCDCFG5_GUARDTIME(ATMEL_LCDC_GUARD_TIME); + value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS); + writel(value, ®s->lcdc_lcdcfg5); + + /* Vertical & Horizontal Timing */ + value = LCDC_LCDCFG1_VSPW(panel_info.vl_vsync_len - 1); + value |= LCDC_LCDCFG1_HSPW(panel_info.vl_hsync_len - 1); + writel(value, ®s->lcdc_lcdcfg1); + + value = LCDC_LCDCFG2_VBPW(panel_info.vl_upper_margin); + value |= LCDC_LCDCFG2_VFPW(panel_info.vl_lower_margin - 1); + writel(value, ®s->lcdc_lcdcfg2); + + value = LCDC_LCDCFG3_HBPW(panel_info.vl_left_margin - 1); + value |= LCDC_LCDCFG3_HFPW(panel_info.vl_right_margin - 1); + writel(value, ®s->lcdc_lcdcfg3); + + /* Display size */ + value = LCDC_LCDCFG4_RPF(panel_info.vl_row - 1); + value |= LCDC_LCDCFG4_PPL(panel_info.vl_col - 1); + writel(value, ®s->lcdc_lcdcfg4); + + writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO, + ®s->lcdc_basecfg0); + + switch (NBITS(panel_info.vl_bpix)) { + case 16: + writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565, + ®s->lcdc_basecfg1); + break; + case 32: + writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888, + ®s->lcdc_basecfg1); + break; + default: + BUG(); + break; + } + + writel(LCDC_BASECFG2_XSTRIDE(0), ®s->lcdc_basecfg2); + writel(0, ®s->lcdc_basecfg3); + writel(LCDC_BASECFG4_DMA, ®s->lcdc_basecfg4); + + /* Disable all interrupts */ + writel(~0UL, ®s->lcdc_lcdidr); + writel(~0UL, ®s->lcdc_baseidr); + + /* Setup the DMA descriptor, this descriptor will loop to itself */ + desc = (struct lcd_dma_desc *)(lcdbase - 16); + + desc->address = (u32)lcdbase; + /* Disable DMA transfer interrupt & descriptor loaded interrupt. */ + desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN + | LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH; + desc->next = (u32)desc; + + /* Flush the DMA descriptor if we enabled dcache */ + flush_dcache_range((u32)desc, (u32)desc + sizeof(*desc)); + + writel(desc->address, ®s->lcdc_baseaddr); + writel(desc->control, ®s->lcdc_basectrl); + writel(desc->next, ®s->lcdc_basenext); + writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN, + ®s->lcdc_basecher); + + /* Enable LCD */ + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_CLKEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_CLKSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_SYNCEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_LCDSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_DISPEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_DISPSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_PWMEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_PWMSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + + /* Enable flushing if we enabled dcache */ + lcd_set_flush_dcache(1); +} + +#else + +enum { + LCD_MAX_WIDTH = 1024, + LCD_MAX_HEIGHT = 768, + LCD_MAX_LOG2_BPP = VIDEO_BPP16, +}; + +struct atmel_hlcdc_priv { + struct atmel_hlcd_regs *regs; + struct display_timing timing; + unsigned int vl_bpix; + unsigned int output_mode; + unsigned int guard_time; + ulong clk_rate; +}; + +static int at91_hlcdc_enable_clk(struct udevice *dev) +{ + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + struct clk clk; + ulong clk_rate; + int ret; + + ret = clk_get_by_index(dev, 0, &clk); + if (ret) + return -EINVAL; + + ret = clk_enable(&clk); + if (ret) + return ret; + + clk_rate = clk_get_rate(&clk); + if (!clk_rate) { + clk_disable(&clk); + return -ENODEV; + } + + priv->clk_rate = clk_rate; + + clk_free(&clk); + + return 0; +} + +static void atmel_hlcdc_init(struct udevice *dev) +{ + struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev); + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + struct atmel_hlcd_regs *regs = priv->regs; + struct display_timing *timing = &priv->timing; + struct lcd_dma_desc *desc; + unsigned long value, vl_clk_pol; + int ret; + + /* Disable DISP signal */ + writel(LCDC_LCDDIS_DISPDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_DISPSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable synchronization */ + writel(LCDC_LCDDIS_SYNCDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_LCDSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable pixel clock */ + writel(LCDC_LCDDIS_CLKDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_CLKSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + /* Disable PWM */ + writel(LCDC_LCDDIS_PWMDIS, ®s->lcdc_lcddis); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_PWMSTS, + false, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + + /* Set pixel clock */ + value = priv->clk_rate / timing->pixelclock.typ; + if (priv->clk_rate % timing->pixelclock.typ) + value++; + + vl_clk_pol = 0; + if (timing->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + vl_clk_pol = LCDC_LCDCFG0_CLKPOL; + + if (value < 1) { + /* Using system clock as pixel clock */ + writel(LCDC_LCDCFG0_CLKDIV(0) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | vl_clk_pol + | LCDC_LCDCFG0_CLKSEL, + ®s->lcdc_lcdcfg0); + + } else { + writel(LCDC_LCDCFG0_CLKDIV(value - 2) + | LCDC_LCDCFG0_CGDISHCR + | LCDC_LCDCFG0_CGDISHEO + | LCDC_LCDCFG0_CGDISOVR1 + | LCDC_LCDCFG0_CGDISBASE + | vl_clk_pol, + ®s->lcdc_lcdcfg0); + } + + /* Initialize control register 5 */ + value = 0; + + if (!(timing->flags & DISPLAY_FLAGS_HSYNC_HIGH)) + value |= LCDC_LCDCFG5_HSPOL; + if (!(timing->flags & DISPLAY_FLAGS_VSYNC_HIGH)) + value |= LCDC_LCDCFG5_VSPOL; + + switch (priv->output_mode) { + case 12: + value |= LCDC_LCDCFG5_MODE_OUTPUT_12BPP; + break; + case 16: + value |= LCDC_LCDCFG5_MODE_OUTPUT_16BPP; + break; + case 18: + value |= LCDC_LCDCFG5_MODE_OUTPUT_18BPP; + break; + case 24: + value |= LCDC_LCDCFG5_MODE_OUTPUT_24BPP; + break; + default: + BUG(); + break; + } + + value |= LCDC_LCDCFG5_GUARDTIME(priv->guard_time); + value |= (LCDC_LCDCFG5_DISPDLY | LCDC_LCDCFG5_VSPDLYS); + writel(value, ®s->lcdc_lcdcfg5); + + /* Vertical & Horizontal Timing */ + value = LCDC_LCDCFG1_VSPW(timing->vsync_len.typ - 1); + value |= LCDC_LCDCFG1_HSPW(timing->hsync_len.typ - 1); + writel(value, ®s->lcdc_lcdcfg1); + + value = LCDC_LCDCFG2_VBPW(timing->vback_porch.typ); + value |= LCDC_LCDCFG2_VFPW(timing->vfront_porch.typ - 1); + writel(value, ®s->lcdc_lcdcfg2); + + value = LCDC_LCDCFG3_HBPW(timing->hback_porch.typ - 1); + value |= LCDC_LCDCFG3_HFPW(timing->hfront_porch.typ - 1); + writel(value, ®s->lcdc_lcdcfg3); + + /* Display size */ + value = LCDC_LCDCFG4_RPF(timing->vactive.typ - 1); + value |= LCDC_LCDCFG4_PPL(timing->hactive.typ - 1); + writel(value, ®s->lcdc_lcdcfg4); + + writel(LCDC_BASECFG0_BLEN_AHB_INCR4 | LCDC_BASECFG0_DLBO, + ®s->lcdc_basecfg0); + + switch (VNBITS(priv->vl_bpix)) { + case 16: + writel(LCDC_BASECFG1_RGBMODE_16BPP_RGB_565, + ®s->lcdc_basecfg1); + break; + case 32: + writel(LCDC_BASECFG1_RGBMODE_24BPP_RGB_888, + ®s->lcdc_basecfg1); + break; + default: + BUG(); + break; + } + + writel(LCDC_BASECFG2_XSTRIDE(0), ®s->lcdc_basecfg2); + writel(0, ®s->lcdc_basecfg3); + writel(LCDC_BASECFG4_DMA, ®s->lcdc_basecfg4); + + /* Disable all interrupts */ + writel(~0UL, ®s->lcdc_lcdidr); + writel(~0UL, ®s->lcdc_baseidr); + + /* Setup the DMA descriptor, this descriptor will loop to itself */ + desc = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*desc)); + if (!desc) + return; + + desc->address = (u32)uc_plat->base; + + /* Disable DMA transfer interrupt & descriptor loaded interrupt. */ + desc->control = LCDC_BASECTRL_ADDIEN | LCDC_BASECTRL_DSCRIEN + | LCDC_BASECTRL_DMAIEN | LCDC_BASECTRL_DFETCH; + desc->next = (u32)desc; + + /* Flush the DMA descriptor if we enabled dcache */ + flush_dcache_range((u32)desc, + ALIGN(((u32)desc + sizeof(*desc)), + CONFIG_SYS_CACHELINE_SIZE)); + + writel(desc->address, ®s->lcdc_baseaddr); + writel(desc->control, ®s->lcdc_basectrl); + writel(desc->next, ®s->lcdc_basenext); + writel(LCDC_BASECHER_CHEN | LCDC_BASECHER_UPDATEEN, + ®s->lcdc_basecher); + + /* Enable LCD */ + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_CLKEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_CLKSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_SYNCEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_LCDSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_DISPEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_DISPSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); + value = readl(®s->lcdc_lcden); + writel(value | LCDC_LCDEN_PWMEN, ®s->lcdc_lcden); + ret = wait_for_bit_le32(®s->lcdc_lcdsr, LCDC_LCDSR_PWMSTS, + true, 1000, false); + if (ret) + printf("%s: %d: Timeout!\n", __func__, __LINE__); +} + +static int atmel_hlcdc_probe(struct udevice *dev) +{ + struct video_priv *uc_priv = dev_get_uclass_priv(dev); + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + int ret; + + ret = at91_hlcdc_enable_clk(dev); + if (ret) + return ret; + + atmel_hlcdc_init(dev); + + uc_priv->xsize = priv->timing.hactive.typ; + uc_priv->ysize = priv->timing.vactive.typ; + uc_priv->bpix = priv->vl_bpix; + + /* Enable flushing if we enabled dcache */ + video_set_flush_dcache(dev, true); + + return 0; +} + +static int atmel_hlcdc_of_to_plat(struct udevice *dev) +{ + struct atmel_hlcdc_priv *priv = dev_get_priv(dev); + const void *blob = gd->fdt_blob; + int node = dev_of_offset(dev); + + priv->regs = dev_read_addr_ptr(dev); + if (!priv->regs) { + debug("%s: No display controller address\n", __func__); + return -EINVAL; + } + + if (fdtdec_decode_display_timing(blob, dev_of_offset(dev), + 0, &priv->timing)) { + debug("%s: Failed to decode display timing\n", __func__); + return -EINVAL; + } + + if (priv->timing.hactive.typ > LCD_MAX_WIDTH) + priv->timing.hactive.typ = LCD_MAX_WIDTH; + + if (priv->timing.vactive.typ > LCD_MAX_HEIGHT) + priv->timing.vactive.typ = LCD_MAX_HEIGHT; + + priv->vl_bpix = fdtdec_get_int(blob, node, "atmel,vl-bpix", 0); + if (!priv->vl_bpix) { + debug("%s: Failed to get bits per pixel\n", __func__); + return -EINVAL; + } + + priv->output_mode = fdtdec_get_int(blob, node, "atmel,output-mode", 24); + priv->guard_time = fdtdec_get_int(blob, node, "atmel,guard-time", 1); + + return 0; +} + +static int atmel_hlcdc_bind(struct udevice *dev) +{ + struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev); + + uc_plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT * + (1 << LCD_MAX_LOG2_BPP) / 8; + + debug("%s: Frame buffer size %x\n", __func__, uc_plat->size); + + return 0; +} + +static const struct udevice_id atmel_hlcdc_ids[] = { + { .compatible = "atmel,sama5d2-hlcdc" }, + { .compatible = "atmel,at91sam9x5-hlcdc" }, + { } +}; + +U_BOOT_DRIVER(atmel_hlcdfb) = { + .name = "atmel_hlcdfb", + .id = UCLASS_VIDEO, + .of_match = atmel_hlcdc_ids, + .bind = atmel_hlcdc_bind, + .probe = atmel_hlcdc_probe, + .of_to_plat = atmel_hlcdc_of_to_plat, + .priv_auto = sizeof(struct atmel_hlcdc_priv), +}; + +#endif |