mirror of
https://github.com/AsahiLinux/u-boot
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401d1c4f5d
Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
426 lines
11 KiB
C
426 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 Dario Binacchi <dariobin@libero.it>
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <lcd.h>
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#include <log.h>
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#include <panel.h>
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#include <video.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <asm/utils.h>
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#include "tilcdc.h"
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#include "tilcdc-panel.h"
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#define LCDC_FMAX 200000000
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/* LCD Control Register */
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#define LCDC_CTRL_CLK_DIVISOR_MASK GENMASK(15, 8)
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#define LCDC_CTRL_RASTER_MODE BIT(0)
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#define LCDC_CTRL_CLK_DIVISOR(x) (((x) & GENMASK(7, 0)) << 8)
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/* LCD Clock Enable Register */
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#define LCDC_CLKC_ENABLE_CORECLKEN BIT(0)
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#define LCDC_CLKC_ENABLE_LIDDCLKEN BIT(1)
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#define LCDC_CLKC_ENABLE_DMACLKEN BIT(2)
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/* LCD DMA Control Register */
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#define LCDC_DMA_CTRL_BURST_SIZE(x) (((x) & GENMASK(2, 0)) << 4)
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#define LCDC_DMA_CTRL_BURST_1 0x0
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#define LCDC_DMA_CTRL_BURST_2 0x1
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#define LCDC_DMA_CTRL_BURST_4 0x2
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#define LCDC_DMA_CTRL_BURST_8 0x3
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#define LCDC_DMA_CTRL_BURST_16 0x4
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#define LCDC_DMA_CTRL_FIFO_TH(x) (((x) & GENMASK(2, 0)) << 8)
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/* LCD Timing_0 Register */
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#define LCDC_RASTER_TIMING_0_HORMSB(x) ((((x) - 1) & BIT(10)) >> 7)
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#define LCDC_RASTER_TIMING_0_HORLSB(x) (((((x) >> 4) - 1) & GENMASK(5, 0)) << 4)
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#define LCDC_RASTER_TIMING_0_HSWLSB(x) ((((x) - 1) & GENMASK(5, 0)) << 10)
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#define LCDC_RASTER_TIMING_0_HFPLSB(x) ((((x) - 1) & GENMASK(7, 0)) << 16)
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#define LCDC_RASTER_TIMING_0_HBPLSB(x) ((((x) - 1) & GENMASK(7, 0)) << 24)
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/* LCD Timing_1 Register */
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#define LCDC_RASTER_TIMING_1_VERLSB(x) (((x) - 1) & GENMASK(9, 0))
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#define LCDC_RASTER_TIMING_1_VSW(x) ((((x) - 1) & GENMASK(5, 0)) << 10)
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#define LCDC_RASTER_TIMING_1_VFP(x) (((x) & GENMASK(7, 0)) << 16)
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#define LCDC_RASTER_TIMING_1_VBP(x) (((x) & GENMASK(7, 0)) << 24)
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/* LCD Timing_2 Register */
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#define LCDC_RASTER_TIMING_2_HFPMSB(x) ((((x) - 1) & GENMASK(9, 8)) >> 8)
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#define LCDC_RASTER_TIMING_2_HBPMSB(x) ((((x) - 1) & GENMASK(9, 8)) >> 4)
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#define LCDC_RASTER_TIMING_2_ACB(x) (((x) & GENMASK(7, 0)) << 8)
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#define LCDC_RASTER_TIMING_2_ACBI(x) (((x) & GENMASK(3, 0)) << 16)
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#define LCDC_RASTER_TIMING_2_VSYNC_INVERT BIT(20)
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#define LCDC_RASTER_TIMING_2_HSYNC_INVERT BIT(21)
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#define LCDC_RASTER_TIMING_2_PXCLK_INVERT BIT(22)
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#define LCDC_RASTER_TIMING_2_DE_INVERT BIT(23)
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#define LCDC_RASTER_TIMING_2_HSVS_RISEFALL BIT(24)
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#define LCDC_RASTER_TIMING_2_HSVS_CONTROL BIT(25)
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#define LCDC_RASTER_TIMING_2_VERMSB(x) ((((x) - 1) & BIT(10)) << 16)
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#define LCDC_RASTER_TIMING_2_HSWMSB(x) ((((x) - 1) & GENMASK(9, 6)) << 21)
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/* LCD Raster Ctrl Register */
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#define LCDC_RASTER_CTRL_ENABLE BIT(0)
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#define LCDC_RASTER_CTRL_TFT_MODE BIT(7)
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#define LCDC_RASTER_CTRL_DATA_ORDER BIT(8)
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#define LCDC_RASTER_CTRL_REQDLY(x) (((x) & GENMASK(7, 0)) << 12)
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#define LCDC_RASTER_CTRL_PALMODE_RAWDATA (0x02 << 20)
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#define LCDC_RASTER_CTRL_TFT_ALT_ENABLE BIT(23)
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#define LCDC_RASTER_CTRL_TFT_24BPP_MODE BIT(25)
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#define LCDC_RASTER_CTRL_TFT_24BPP_UNPACK BIT(26)
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enum {
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LCDC_MAX_WIDTH = 2048,
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LCDC_MAX_HEIGHT = 2048,
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LCDC_MAX_LOG2_BPP = VIDEO_BPP32,
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};
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struct tilcdc_regs {
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u32 pid;
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u32 ctrl;
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u32 gap0;
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u32 lidd_ctrl;
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u32 lidd_cs0_conf;
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u32 lidd_cs0_addr;
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u32 lidd_cs0_data;
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u32 lidd_cs1_conf;
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u32 lidd_cs1_addr;
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u32 lidd_cs1_data;
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u32 raster_ctrl;
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u32 raster_timing0;
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u32 raster_timing1;
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u32 raster_timing2;
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u32 raster_subpanel;
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u32 raster_subpanel2;
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u32 lcddma_ctrl;
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u32 lcddma_fb0_base;
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u32 lcddma_fb0_ceiling;
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u32 lcddma_fb1_base;
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u32 lcddma_fb1_ceiling;
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u32 sysconfig;
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u32 irqstatus_raw;
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u32 irqstatus;
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u32 irqenable_set;
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u32 irqenable_clear;
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u32 gap1;
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u32 clkc_enable;
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u32 clkc_reset;
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};
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struct tilcdc_priv {
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struct tilcdc_regs *regs;
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struct clk gclk;
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struct clk dpll_m2_clk;
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};
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DECLARE_GLOBAL_DATA_PTR;
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static ulong tilcdc_set_pixel_clk_rate(struct udevice *dev, ulong rate)
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{
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struct tilcdc_priv *priv = dev_get_priv(dev);
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struct tilcdc_regs *regs = priv->regs;
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ulong mult_rate, mult_round_rate, best_err, err;
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u32 v;
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int div, i;
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best_err = rate;
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div = 0;
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for (i = 2; i <= 255; i++) {
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mult_rate = rate * i;
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mult_round_rate = clk_round_rate(&priv->gclk, mult_rate);
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if (IS_ERR_VALUE(mult_round_rate))
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return mult_round_rate;
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err = mult_rate - mult_round_rate;
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if (err < best_err) {
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best_err = err;
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div = i;
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if (err == 0)
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break;
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}
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}
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if (div == 0) {
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dev_err(dev, "failed to find a divisor\n");
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return -EFAULT;
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}
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mult_rate = clk_set_rate(&priv->gclk, rate * div);
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v = readl(®s->ctrl) & ~LCDC_CTRL_CLK_DIVISOR_MASK;
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v |= LCDC_CTRL_CLK_DIVISOR(div);
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writel(v, ®s->ctrl);
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rate = mult_rate / div;
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dev_dbg(dev, "rate=%ld, div=%d, err=%ld\n", rate, div, err);
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return rate;
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}
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static int tilcdc_remove(struct udevice *dev)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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struct tilcdc_priv *priv = dev_get_priv(dev);
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uc_plat->base -= 0x20;
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uc_plat->size += 0x20;
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clk_release_all(&priv->gclk, 1);
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clk_release_all(&priv->dpll_m2_clk, 1);
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return 0;
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}
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static int tilcdc_probe(struct udevice *dev)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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struct video_priv *uc_priv = dev_get_uclass_priv(dev);
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struct tilcdc_priv *priv = dev_get_priv(dev);
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struct tilcdc_regs *regs = priv->regs;
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struct udevice *panel, *clk_dev;
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struct tilcdc_panel_info info;
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struct display_timing timing;
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ulong rate;
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u32 reg;
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int err;
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/* Before relocation we don't need to do anything */
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if (!(gd->flags & GD_FLG_RELOC))
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return 0;
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err = uclass_get_device(UCLASS_PANEL, 0, &panel);
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if (err) {
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dev_err(dev, "failed to get panel\n");
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return err;
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}
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err = panel_get_display_timing(panel, &timing);
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if (err) {
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dev_err(dev, "failed to get display timing\n");
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return err;
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}
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if (timing.pixelclock.typ > (LCDC_FMAX / 2)) {
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dev_err(dev, "invalid display clock-frequency: %d Hz\n",
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timing.pixelclock.typ);
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return -EINVAL;
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}
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if (timing.hactive.typ > LCDC_MAX_WIDTH)
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timing.hactive.typ = LCDC_MAX_WIDTH;
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if (timing.vactive.typ > LCDC_MAX_HEIGHT)
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timing.vactive.typ = LCDC_MAX_HEIGHT;
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err = tilcdc_panel_get_display_info(panel, &info);
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if (err) {
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dev_err(dev, "failed to get panel info\n");
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return err;
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}
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switch (info.bpp) {
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case 16:
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case 24:
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case 32:
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break;
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default:
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dev_err(dev, "invalid seting, bpp: %d\n", info.bpp);
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return -EINVAL;
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}
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switch (info.dma_burst_sz) {
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case 1:
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case 2:
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case 4:
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case 8:
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case 16:
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break;
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default:
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dev_err(dev, "invalid setting, dma-burst-sz: %d\n",
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info.dma_burst_sz);
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return -EINVAL;
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}
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err = uclass_get_device_by_name(UCLASS_CLK, "lcd_gclk@534", &clk_dev);
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if (err) {
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dev_err(dev, "failed to get lcd_gclk device\n");
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return err;
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}
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err = clk_request(clk_dev, &priv->gclk);
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if (err) {
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dev_err(dev, "failed to get %s clock\n", clk_dev->name);
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return err;
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}
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rate = tilcdc_set_pixel_clk_rate(dev, timing.pixelclock.typ);
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if (IS_ERR_VALUE(rate)) {
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dev_err(dev, "failed to set pixel clock rate\n");
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return rate;
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}
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err = uclass_get_device_by_name(UCLASS_CLK, "dpll_disp_m2_ck@4a4",
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&clk_dev);
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if (err) {
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dev_err(dev, "failed to get dpll_disp_m2 clock device\n");
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return err;
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}
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err = clk_request(clk_dev, &priv->dpll_m2_clk);
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if (err) {
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dev_err(dev, "failed to get %s clock\n", clk_dev->name);
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return err;
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}
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err = clk_set_parent(&priv->gclk, &priv->dpll_m2_clk);
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if (err) {
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dev_err(dev, "failed to set %s clock as %s's parent\n",
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priv->dpll_m2_clk.dev->name, priv->gclk.dev->name);
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return err;
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}
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/* palette default entry */
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memset((void *)uc_plat->base, 0, 0x20);
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*(unsigned int *)uc_plat->base = 0x4000;
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/* point fb behind palette */
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uc_plat->base += 0x20;
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uc_plat->size -= 0x20;
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writel(LCDC_CLKC_ENABLE_CORECLKEN | LCDC_CLKC_ENABLE_LIDDCLKEN |
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LCDC_CLKC_ENABLE_DMACLKEN, ®s->clkc_enable);
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writel(0, ®s->raster_ctrl);
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reg = readl(®s->ctrl) & LCDC_CTRL_CLK_DIVISOR_MASK;
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reg |= LCDC_CTRL_RASTER_MODE;
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writel(reg, ®s->ctrl);
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reg = (timing.hactive.typ * timing.vactive.typ * info.bpp) >> 3;
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reg += uc_plat->base;
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writel(uc_plat->base, ®s->lcddma_fb0_base);
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writel(reg, ®s->lcddma_fb0_ceiling);
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writel(uc_plat->base, ®s->lcddma_fb1_base);
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writel(reg, ®s->lcddma_fb1_ceiling);
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reg = LCDC_DMA_CTRL_FIFO_TH(info.fifo_th);
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switch (info.dma_burst_sz) {
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case 1:
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reg |= LCDC_DMA_CTRL_BURST_SIZE(LCDC_DMA_CTRL_BURST_1);
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break;
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case 2:
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reg |= LCDC_DMA_CTRL_BURST_SIZE(LCDC_DMA_CTRL_BURST_2);
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break;
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case 4:
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reg |= LCDC_DMA_CTRL_BURST_SIZE(LCDC_DMA_CTRL_BURST_4);
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break;
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case 8:
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reg |= LCDC_DMA_CTRL_BURST_SIZE(LCDC_DMA_CTRL_BURST_8);
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break;
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case 16:
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reg |= LCDC_DMA_CTRL_BURST_SIZE(LCDC_DMA_CTRL_BURST_16);
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break;
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}
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writel(reg, ®s->lcddma_ctrl);
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writel(LCDC_RASTER_TIMING_0_HORLSB(timing.hactive.typ) |
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LCDC_RASTER_TIMING_0_HORMSB(timing.hactive.typ) |
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LCDC_RASTER_TIMING_0_HFPLSB(timing.hfront_porch.typ) |
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LCDC_RASTER_TIMING_0_HBPLSB(timing.hback_porch.typ) |
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LCDC_RASTER_TIMING_0_HSWLSB(timing.hsync_len.typ),
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®s->raster_timing0);
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writel(LCDC_RASTER_TIMING_1_VBP(timing.vback_porch.typ) |
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LCDC_RASTER_TIMING_1_VFP(timing.vfront_porch.typ) |
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LCDC_RASTER_TIMING_1_VSW(timing.vsync_len.typ) |
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LCDC_RASTER_TIMING_1_VERLSB(timing.vactive.typ),
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®s->raster_timing1);
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reg = LCDC_RASTER_TIMING_2_ACB(info.ac_bias) |
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LCDC_RASTER_TIMING_2_ACBI(info.ac_bias_intrpt) |
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LCDC_RASTER_TIMING_2_HSWMSB(timing.hsync_len.typ) |
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LCDC_RASTER_TIMING_2_VERMSB(timing.vactive.typ) |
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LCDC_RASTER_TIMING_2_HBPMSB(timing.hback_porch.typ) |
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LCDC_RASTER_TIMING_2_HFPMSB(timing.hfront_porch.typ);
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if (timing.flags & DISPLAY_FLAGS_VSYNC_LOW)
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reg |= LCDC_RASTER_TIMING_2_VSYNC_INVERT;
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if (timing.flags & DISPLAY_FLAGS_HSYNC_LOW)
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reg |= LCDC_RASTER_TIMING_2_HSYNC_INVERT;
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if (info.invert_pxl_clk)
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reg |= LCDC_RASTER_TIMING_2_PXCLK_INVERT;
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if (info.sync_edge)
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reg |= LCDC_RASTER_TIMING_2_HSVS_RISEFALL;
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if (info.sync_ctrl)
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reg |= LCDC_RASTER_TIMING_2_HSVS_CONTROL;
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writel(reg, ®s->raster_timing2);
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reg = LCDC_RASTER_CTRL_PALMODE_RAWDATA | LCDC_RASTER_CTRL_TFT_MODE |
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LCDC_RASTER_CTRL_ENABLE | LCDC_RASTER_CTRL_REQDLY(info.fdd);
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if (info.tft_alt_mode)
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reg |= LCDC_RASTER_CTRL_TFT_ALT_ENABLE;
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if (info.bpp == 24)
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reg |= LCDC_RASTER_CTRL_TFT_24BPP_MODE;
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else if (info.bpp == 32)
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reg |= LCDC_RASTER_CTRL_TFT_24BPP_MODE |
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LCDC_RASTER_CTRL_TFT_24BPP_UNPACK;
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if (info.raster_order)
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reg |= LCDC_RASTER_CTRL_DATA_ORDER;
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writel(reg, ®s->raster_ctrl);
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uc_priv->xsize = timing.hactive.typ;
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uc_priv->ysize = timing.vactive.typ;
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uc_priv->bpix = log_2_n_round_up(info.bpp);
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err = panel_enable_backlight(panel);
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if (err) {
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dev_err(dev, "failed to enable panel backlight\n");
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return err;
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}
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return 0;
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}
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static int tilcdc_of_to_plat(struct udevice *dev)
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{
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struct tilcdc_priv *priv = dev_get_priv(dev);
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priv->regs = (struct tilcdc_regs *)dev_read_addr(dev);
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if ((fdt_addr_t)priv->regs == FDT_ADDR_T_NONE) {
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dev_err(dev, "failed to get base address\n");
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return -EINVAL;
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}
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dev_dbg(dev, "LCD: base address=0x%x\n", (unsigned int)priv->regs);
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return 0;
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}
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static int tilcdc_bind(struct udevice *dev)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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uc_plat->size = ((LCDC_MAX_WIDTH * LCDC_MAX_HEIGHT *
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(1 << LCDC_MAX_LOG2_BPP)) >> 3) + 0x20;
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dev_dbg(dev, "frame buffer size 0x%x\n", uc_plat->size);
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return 0;
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}
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static const struct udevice_id tilcdc_ids[] = {
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{.compatible = "ti,am33xx-tilcdc"},
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{}
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};
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U_BOOT_DRIVER(tilcdc) = {
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.name = "tilcdc",
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.id = UCLASS_VIDEO,
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.of_match = tilcdc_ids,
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.bind = tilcdc_bind,
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.of_to_plat = tilcdc_of_to_plat,
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.probe = tilcdc_probe,
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.remove = tilcdc_remove,
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.priv_auto = sizeof(struct tilcdc_priv)
|
|
};
|