--- /dev/null
+/*
+ * Timing controller driver for Allwinner SoCs.
+ *
+ * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
+ * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
+ * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/arch/lcdc.h>
+#include <asm/io.h>
+
+#include "../videomodes.h"
+
+static int lcdc_get_clk_delay(const struct ctfb_res_modes *mode, int tcon)
+{
+ int delay;
+
+ delay = mode->lower_margin + mode->vsync_len +
+ mode->upper_margin;
+ if (mode->vmode == FB_VMODE_INTERLACED)
+ delay /= 2;
+ if (tcon == 1)
+ delay -= 2;
+
+ return (delay > 30) ? 30 : delay;
+}
+
+void lcdc_init(struct sunxi_lcdc_reg * const lcdc)
+{
+ /* Init lcdc */
+ writel(0, &lcdc->ctrl); /* Disable tcon */
+ writel(0, &lcdc->int0); /* Disable all interrupts */
+
+ /* Disable tcon0 dot clock */
+ clrbits_le32(&lcdc->tcon0_dclk, SUNXI_LCDC_TCON0_DCLK_ENABLE);
+
+ /* Set all io lines to tristate */
+ writel(0xffffffff, &lcdc->tcon0_io_tristate);
+ writel(0xffffffff, &lcdc->tcon1_io_tristate);
+}
+
+void lcdc_enable(struct sunxi_lcdc_reg * const lcdc, int depth)
+{
+ setbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_TCON_ENABLE);
+#ifdef CONFIG_VIDEO_LCD_IF_LVDS
+ setbits_le32(&lcdc->tcon0_lvds_intf, SUNXI_LCDC_TCON0_LVDS_INTF_ENABLE);
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0);
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ udelay(2); /* delay at least 1200 ns */
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_EN_MB);
+ udelay(2); /* delay at least 1200 ns */
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_DRVC);
+ if (depth == 18)
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_DRVD(0x7));
+ else
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_DRVD(0xf));
+#else
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_UPDATE);
+ udelay(2); /* delay at least 1200 ns */
+ setbits_le32(&lcdc->lvds_ana1, SUNXI_LCDC_LVDS_ANA1_INIT1);
+ udelay(1); /* delay at least 120 ns */
+ setbits_le32(&lcdc->lvds_ana1, SUNXI_LCDC_LVDS_ANA1_INIT2);
+ setbits_le32(&lcdc->lvds_ana0, SUNXI_LCDC_LVDS_ANA0_UPDATE);
+#endif
+#endif
+}
+
+void lcdc_tcon0_mode_set(struct sunxi_lcdc_reg * const lcdc,
+ const struct ctfb_res_modes *mode,
+ int clk_div, bool for_ext_vga_dac,
+ int depth, int dclk_phase)
+{
+ int bp, clk_delay, total, val;
+
+ /* Use tcon0 */
+ clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
+ SUNXI_LCDC_CTRL_IO_MAP_TCON0);
+
+ clk_delay = lcdc_get_clk_delay(mode, 0);
+ writel(SUNXI_LCDC_TCON0_CTRL_ENABLE |
+ SUNXI_LCDC_TCON0_CTRL_CLK_DELAY(clk_delay), &lcdc->tcon0_ctrl);
+
+ writel(SUNXI_LCDC_TCON0_DCLK_ENABLE |
+ SUNXI_LCDC_TCON0_DCLK_DIV(clk_div), &lcdc->tcon0_dclk);
+
+ writel(SUNXI_LCDC_X(mode->xres) |
+ SUNXI_LCDC_Y(mode->yres), &lcdc->tcon0_timing_active);
+
+ bp = mode->hsync_len + mode->left_margin;
+ total = mode->xres + mode->right_margin + bp;
+ writel(SUNXI_LCDC_TCON0_TIMING_H_TOTAL(total) |
+ SUNXI_LCDC_TCON0_TIMING_H_BP(bp), &lcdc->tcon0_timing_h);
+
+ bp = mode->vsync_len + mode->upper_margin;
+ total = mode->yres + mode->lower_margin + bp;
+ writel(SUNXI_LCDC_TCON0_TIMING_V_TOTAL(total) |
+ SUNXI_LCDC_TCON0_TIMING_V_BP(bp), &lcdc->tcon0_timing_v);
+
+#ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
+ writel(SUNXI_LCDC_X(mode->hsync_len) |
+ SUNXI_LCDC_Y(mode->vsync_len), &lcdc->tcon0_timing_sync);
+
+ writel(0, &lcdc->tcon0_hv_intf);
+ writel(0, &lcdc->tcon0_cpu_intf);
+#endif
+#ifdef CONFIG_VIDEO_LCD_IF_LVDS
+ val = (depth == 18) ? 1 : 0;
+ writel(SUNXI_LCDC_TCON0_LVDS_INTF_BITWIDTH(val) |
+ SUNXI_LCDC_TCON0_LVDS_CLK_SEL_TCON0, &lcdc->tcon0_lvds_intf);
+#endif
+
+ if (depth == 18 || depth == 16) {
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[0]);
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[1]);
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[2]);
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[3]);
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[4]);
+ writel(SUNXI_LCDC_TCON0_FRM_SEED, &lcdc->tcon0_frm_seed[5]);
+ writel(SUNXI_LCDC_TCON0_FRM_TAB0, &lcdc->tcon0_frm_table[0]);
+ writel(SUNXI_LCDC_TCON0_FRM_TAB1, &lcdc->tcon0_frm_table[1]);
+ writel(SUNXI_LCDC_TCON0_FRM_TAB2, &lcdc->tcon0_frm_table[2]);
+ writel(SUNXI_LCDC_TCON0_FRM_TAB3, &lcdc->tcon0_frm_table[3]);
+ writel(((depth == 18) ?
+ SUNXI_LCDC_TCON0_FRM_CTRL_RGB666 :
+ SUNXI_LCDC_TCON0_FRM_CTRL_RGB565),
+ &lcdc->tcon0_frm_ctrl);
+ }
+
+ val = SUNXI_LCDC_TCON0_IO_POL_DCLK_PHASE(dclk_phase);
+ if (!(mode->sync & FB_SYNC_HOR_HIGH_ACT))
+ val |= SUNXI_LCDC_TCON_HSYNC_MASK;
+ if (!(mode->sync & FB_SYNC_VERT_HIGH_ACT))
+ val |= SUNXI_LCDC_TCON_VSYNC_MASK;
+
+#ifdef CONFIG_VIDEO_VGA_VIA_LCD_FORCE_SYNC_ACTIVE_HIGH
+ if (for_ext_vga_dac)
+ val = 0;
+#endif
+ writel(val, &lcdc->tcon0_io_polarity);
+
+ writel(0, &lcdc->tcon0_io_tristate);
+}
+
+void lcdc_tcon1_mode_set(struct sunxi_lcdc_reg * const lcdc,
+ const struct ctfb_res_modes *mode,
+ bool ext_hvsync, bool is_composite)
+{
+ int bp, clk_delay, total, val, yres;
+
+ /* Use tcon1 */
+ clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
+ SUNXI_LCDC_CTRL_IO_MAP_TCON1);
+
+ clk_delay = lcdc_get_clk_delay(mode, 1);
+ writel(SUNXI_LCDC_TCON1_CTRL_ENABLE |
+ ((mode->vmode == FB_VMODE_INTERLACED) ?
+ SUNXI_LCDC_TCON1_CTRL_INTERLACE_ENABLE : 0) |
+ SUNXI_LCDC_TCON1_CTRL_CLK_DELAY(clk_delay), &lcdc->tcon1_ctrl);
+
+ yres = mode->yres;
+ if (mode->vmode == FB_VMODE_INTERLACED)
+ yres /= 2;
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
+ &lcdc->tcon1_timing_source);
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
+ &lcdc->tcon1_timing_scale);
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
+ &lcdc->tcon1_timing_out);
+
+ bp = mode->hsync_len + mode->left_margin;
+ total = mode->xres + mode->right_margin + bp;
+ writel(SUNXI_LCDC_TCON1_TIMING_H_TOTAL(total) |
+ SUNXI_LCDC_TCON1_TIMING_H_BP(bp), &lcdc->tcon1_timing_h);
+
+ bp = mode->vsync_len + mode->upper_margin;
+ total = mode->yres + mode->lower_margin + bp;
+ if (mode->vmode == FB_VMODE_NONINTERLACED)
+ total *= 2;
+ writel(SUNXI_LCDC_TCON1_TIMING_V_TOTAL(total) |
+ SUNXI_LCDC_TCON1_TIMING_V_BP(bp), &lcdc->tcon1_timing_v);
+
+ writel(SUNXI_LCDC_X(mode->hsync_len) |
+ SUNXI_LCDC_Y(mode->vsync_len), &lcdc->tcon1_timing_sync);
+
+ if (ext_hvsync) {
+ val = 0;
+ if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
+ val |= SUNXI_LCDC_TCON_HSYNC_MASK;
+ if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
+ val |= SUNXI_LCDC_TCON_VSYNC_MASK;
+ writel(val, &lcdc->tcon1_io_polarity);
+
+ clrbits_le32(&lcdc->tcon1_io_tristate,
+ SUNXI_LCDC_TCON_VSYNC_MASK |
+ SUNXI_LCDC_TCON_HSYNC_MASK);
+ }
+
+#ifdef CONFIG_MACH_SUN5I
+ if (is_composite)
+ clrsetbits_le32(&lcdc->mux_ctrl, SUNXI_LCDC_MUX_CTRL_SRC0_MASK,
+ SUNXI_LCDC_MUX_CTRL_SRC0(1));
+#endif
+}
projects / oweals / u-boot.git / blobdiff