1 files changed, 409 insertions, 0 deletions
diff --git a/drivers/video/exynos/exynos_fimd.c b/drivers/video/exynos/exynos_fimd.c
new file mode 100644
index 0000000000..ac001a801e
--- /dev/null
+++ b/drivers/video/exynos/exynos_fimd.c
@@ -0,0 +1,409 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: InKi Dae <inki.dae@samsung.com>
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <lcd.h>
+#include <div64.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cpu.h>
+#include "exynos_fb.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static unsigned long *lcd_base_addr;
+static vidinfo_t *pvid;
+static struct exynos_fb *fimd_ctrl;
+
+void exynos_fimd_lcd_init_mem(u_long screen_base, u_long fb_size,
+		u_long palette_size)
+{
+	lcd_base_addr = (unsigned long *)screen_base;
+}
+
+static void exynos_fimd_set_dualrgb(unsigned int enabled)
+{
+	unsigned int cfg = 0;
+
+	if (enabled) {
+		cfg = EXYNOS_DUALRGB_BYPASS_DUAL | EXYNOS_DUALRGB_LINESPLIT |
+			EXYNOS_DUALRGB_VDEN_EN_ENABLE;
+
+		/* in case of Line Split mode, MAIN_CNT doesn't neet to set. */
+		cfg |= EXYNOS_DUALRGB_SUB_CNT(pvid->vl_col / 2) |
+			EXYNOS_DUALRGB_MAIN_CNT(0);
+	}
+
+	writel(cfg, &fimd_ctrl->dualrgb);
+}
+
+static void exynos_fimd_set_dp_clkcon(unsigned int enabled)
+{
+	unsigned int cfg = 0;
+
+	if (enabled)
+		cfg = EXYNOS_DP_CLK_ENABLE;
+
+	writel(cfg, &fimd_ctrl->dp_mie_clkcon);
+}
+
+static void exynos_fimd_set_par(unsigned int win_id)
+{
+	unsigned int cfg = 0;
+
+	/* set window control */
+	cfg = readl((unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+
+	cfg &= ~(EXYNOS_WINCON_BITSWP_ENABLE | EXYNOS_WINCON_BYTESWP_ENABLE |
+		EXYNOS_WINCON_HAWSWP_ENABLE | EXYNOS_WINCON_WSWP_ENABLE |
+		EXYNOS_WINCON_BURSTLEN_MASK | EXYNOS_WINCON_BPPMODE_MASK |
+		EXYNOS_WINCON_INRGB_MASK | EXYNOS_WINCON_DATAPATH_MASK);
+
+	/* DATAPATH is DMA */
+	cfg |= EXYNOS_WINCON_DATAPATH_DMA;
+
+	cfg |= EXYNOS_WINCON_HAWSWP_ENABLE;
+
+	/* dma burst is 16 */
+	cfg |= EXYNOS_WINCON_BURSTLEN_16WORD;
+
+	switch (pvid->vl_bpix) {
+	case 4:
+		cfg |= EXYNOS_WINCON_BPPMODE_16BPP_565;
+		break;
+	default:
+		cfg |= EXYNOS_WINCON_BPPMODE_24BPP_888;
+		break;
+	}
+
+	writel(cfg, (unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+
+	/* set window position to x=0, y=0*/
+	cfg = EXYNOS_VIDOSD_LEFT_X(0) | EXYNOS_VIDOSD_TOP_Y(0);
+	writel(cfg, (unsigned int)&fimd_ctrl->vidosd0a +
+			EXYNOS_VIDOSD(win_id));
+
+	cfg = EXYNOS_VIDOSD_RIGHT_X(pvid->vl_col - 1) |
+		EXYNOS_VIDOSD_BOTTOM_Y(pvid->vl_row - 1) |
+		EXYNOS_VIDOSD_RIGHT_X_E(1) |
+		EXYNOS_VIDOSD_BOTTOM_Y_E(0);
+
+	writel(cfg, (unsigned int)&fimd_ctrl->vidosd0b +
+			EXYNOS_VIDOSD(win_id));
+
+	/* set window size for window0*/
+	cfg = EXYNOS_VIDOSD_SIZE(pvid->vl_col * pvid->vl_row);
+	writel(cfg, (unsigned int)&fimd_ctrl->vidosd0c +
+			EXYNOS_VIDOSD(win_id));
+}
+
+static void exynos_fimd_set_buffer_address(unsigned int win_id)
+{
+	unsigned long start_addr, end_addr;
+
+	start_addr = (unsigned long)lcd_base_addr;
+	end_addr = start_addr + ((pvid->vl_col * (NBITS(pvid->vl_bpix) / 8)) *
+				pvid->vl_row);
+
+	writel(start_addr, (unsigned int)&fimd_ctrl->vidw00add0b0 +
+			EXYNOS_BUFFER_OFFSET(win_id));
+	writel(end_addr, (unsigned int)&fimd_ctrl->vidw00add1b0 +
+			EXYNOS_BUFFER_OFFSET(win_id));
+}
+
+static void exynos_fimd_set_clock(vidinfo_t *pvid)
+{
+	unsigned int cfg = 0, div = 0, remainder, remainder_div;
+	unsigned long pixel_clock;
+	unsigned long long src_clock;
+
+	if (pvid->dual_lcd_enabled) {
+		pixel_clock = pvid->vl_freq *
+				(pvid->vl_hspw + pvid->vl_hfpd +
+				 pvid->vl_hbpd + pvid->vl_col / 2) *
+				(pvid->vl_vspw + pvid->vl_vfpd +
+				 pvid->vl_vbpd + pvid->vl_row);
+	} else if (pvid->interface_mode == FIMD_CPU_INTERFACE) {
+		pixel_clock = pvid->vl_freq *
+				pvid->vl_width * pvid->vl_height *
+				(pvid->cs_setup + pvid->wr_setup +
+				 pvid->wr_act + pvid->wr_hold + 1);
+	} else {
+		pixel_clock = pvid->vl_freq *
+				(pvid->vl_hspw + pvid->vl_hfpd +
+				 pvid->vl_hbpd + pvid->vl_col) *
+				(pvid->vl_vspw + pvid->vl_vfpd +
+				 pvid->vl_vbpd + pvid->vl_row);
+	}
+
+	cfg = readl(&fimd_ctrl->vidcon0);
+	cfg &= ~(EXYNOS_VIDCON0_CLKSEL_MASK | EXYNOS_VIDCON0_CLKVALUP_MASK |
+		EXYNOS_VIDCON0_CLKVAL_F(0xFF) | EXYNOS_VIDCON0_VCLKEN_MASK |
+		EXYNOS_VIDCON0_CLKDIR_MASK);
+	cfg |= (EXYNOS_VIDCON0_CLKSEL_SCLK | EXYNOS_VIDCON0_CLKVALUP_ALWAYS |
+		EXYNOS_VIDCON0_VCLKEN_NORMAL | EXYNOS_VIDCON0_CLKDIR_DIVIDED);
+
+	src_clock = (unsigned long long) get_lcd_clk();
+
+	/* get quotient and remainder. */
+	remainder = do_div(src_clock, pixel_clock);
+	div = src_clock;
+
+	remainder *= 10;
+	remainder_div = remainder / pixel_clock;
+
+	/* round about one places of decimals. */
+	if (remainder_div >= 5)
+		div++;
+
+	/* in case of dual lcd mode. */
+	if (pvid->dual_lcd_enabled)
+		div--;
+
+	cfg |= EXYNOS_VIDCON0_CLKVAL_F(div - 1);
+	writel(cfg, &fimd_ctrl->vidcon0);
+}
+
+void exynos_set_trigger(void)
+{
+	unsigned int cfg = 0;
+
+	cfg = readl(&fimd_ctrl->trigcon);
+
+	cfg |= (EXYNOS_I80SOFT_TRIG_EN | EXYNOS_I80START_TRIG);
+
+	writel(cfg, &fimd_ctrl->trigcon);
+}
+
+int exynos_is_i80_frame_done(void)
+{
+	unsigned int cfg = 0;
+	int status;
+
+	cfg = readl(&fimd_ctrl->trigcon);
+
+	/* frame done func is valid only when TRIMODE[0] is set to 1. */
+	status = (cfg & EXYNOS_I80STATUS_TRIG_DONE) ==
+			EXYNOS_I80STATUS_TRIG_DONE;
+
+	return status;
+}
+
+static void exynos_fimd_lcd_on(void)
+{
+	unsigned int cfg = 0;
+
+	/* display on */
+	cfg = readl(&fimd_ctrl->vidcon0);
+	cfg |= (EXYNOS_VIDCON0_ENVID_ENABLE | EXYNOS_VIDCON0_ENVID_F_ENABLE);
+	writel(cfg, &fimd_ctrl->vidcon0);
+}
+
+static void exynos_fimd_window_on(unsigned int win_id)
+{
+	unsigned int cfg = 0;
+
+	/* enable window */
+	cfg = readl((unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+	cfg |= EXYNOS_WINCON_ENWIN_ENABLE;
+	writel(cfg, (unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+
+	cfg = readl(&fimd_ctrl->winshmap);
+	cfg |= EXYNOS_WINSHMAP_CH_ENABLE(win_id);
+	writel(cfg, &fimd_ctrl->winshmap);
+}
+
+void exynos_fimd_lcd_off(void)
+{
+	unsigned int cfg = 0;
+
+	cfg = readl(&fimd_ctrl->vidcon0);
+	cfg &= (EXYNOS_VIDCON0_ENVID_DISABLE | EXYNOS_VIDCON0_ENVID_F_DISABLE);
+	writel(cfg, &fimd_ctrl->vidcon0);
+}
+
+void exynos_fimd_window_off(unsigned int win_id)
+{
+	unsigned int cfg = 0;
+
+	cfg = readl((unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+	cfg &= EXYNOS_WINCON_ENWIN_DISABLE;
+	writel(cfg, (unsigned int)&fimd_ctrl->wincon0 +
+			EXYNOS_WINCON(win_id));
+
+	cfg = readl(&fimd_ctrl->winshmap);
+	cfg &= ~EXYNOS_WINSHMAP_CH_DISABLE(win_id);
+	writel(cfg, &fimd_ctrl->winshmap);
+}
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+/*
+* The reset value for FIMD SYSMMU register MMU_CTRL is 3
+* on Exynos5420 and newer versions.
+* This means FIMD SYSMMU is on by default on Exynos5420
+* and newer versions.
+* Since in u-boot we don't use SYSMMU, we should disable
+* those FIMD SYSMMU.
+* Note that there are 2 SYSMMU for FIMD: m0 and m1.
+* m0 handles windows 0 and 4, and m1 handles windows 1, 2 and 3.
+* We disable both of them here.
+*/
+void exynos_fimd_disable_sysmmu(void)
+{
+	u32 *sysmmufimd;
+	unsigned int node;
+	int node_list[2];
+	int count;
+	int i;
+
+	count = fdtdec_find_aliases_for_id(gd->fdt_blob, "fimd",
+				COMPAT_SAMSUNG_EXYNOS_SYSMMU, node_list, 2);
+	for (i = 0; i < count; i++) {
+		node = node_list[i];
+		if (node <= 0) {
+			debug("Can't get device node for fimd sysmmu\n");
+			return;
+		}
+
+		sysmmufimd = (u32 *)fdtdec_get_addr(gd->fdt_blob, node, "reg");
+		if (!sysmmufimd) {
+			debug("Can't get base address for sysmmu fimdm0");
+			return;
+		}
+
+		writel(0x0, sysmmufimd);
+	}
+}
+#endif
+
+void exynos_fimd_lcd_init(vidinfo_t *vid)
+{
+	unsigned int cfg = 0, rgb_mode;
+	unsigned int offset;
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+	unsigned int node;
+
+	node = fdtdec_next_compatible(gd->fdt_blob,
+					0, COMPAT_SAMSUNG_EXYNOS_FIMD);
+	if (node <= 0)
+		debug("exynos_fb: Can't get device node for fimd\n");
+
+	fimd_ctrl = (struct exynos_fb *)fdtdec_get_addr(gd->fdt_blob,
+								node, "reg");
+	if (fimd_ctrl == NULL)
+		debug("Can't get the FIMD base address\n");
+
+	if (fdtdec_get_bool(gd->fdt_blob, node, "samsung,disable-sysmmu"))
+		exynos_fimd_disable_sysmmu();
+
+#else
+	fimd_ctrl = (struct exynos_fb *)samsung_get_base_fimd();
+#endif
+
+	offset = exynos_fimd_get_base_offset();
+
+	/* store panel info to global variable */
+	pvid = vid;
+
+	rgb_mode = vid->rgb_mode;
+
+	if (vid->interface_mode == FIMD_RGB_INTERFACE) {
+		cfg |= EXYNOS_VIDCON0_VIDOUT_RGB;
+		writel(cfg, &fimd_ctrl->vidcon0);
+
+		cfg = readl(&fimd_ctrl->vidcon2);
+		cfg &= ~(EXYNOS_VIDCON2_WB_MASK |
+			EXYNOS_VIDCON2_TVFORMATSEL_MASK |
+			EXYNOS_VIDCON2_TVFORMATSEL_YUV_MASK);
+		cfg |= EXYNOS_VIDCON2_WB_DISABLE;
+		writel(cfg, &fimd_ctrl->vidcon2);
+
+		/* set polarity */
+		cfg = 0;
+		if (!pvid->vl_clkp)
+			cfg |= EXYNOS_VIDCON1_IVCLK_RISING_EDGE;
+		if (!pvid->vl_hsp)
+			cfg |= EXYNOS_VIDCON1_IHSYNC_INVERT;
+		if (!pvid->vl_vsp)
+			cfg |= EXYNOS_VIDCON1_IVSYNC_INVERT;
+		if (!pvid->vl_dp)
+			cfg |= EXYNOS_VIDCON1_IVDEN_INVERT;
+
+		writel(cfg, (unsigned int)&fimd_ctrl->vidcon1 + offset);
+
+		/* set timing */
+		cfg = EXYNOS_VIDTCON0_VFPD(pvid->vl_vfpd - 1);
+		cfg |= EXYNOS_VIDTCON0_VBPD(pvid->vl_vbpd - 1);
+		cfg |= EXYNOS_VIDTCON0_VSPW(pvid->vl_vspw - 1);
+		writel(cfg, (unsigned int)&fimd_ctrl->vidtcon0 + offset);
+
+		cfg = EXYNOS_VIDTCON1_HFPD(pvid->vl_hfpd - 1);
+		cfg |= EXYNOS_VIDTCON1_HBPD(pvid->vl_hbpd - 1);
+		cfg |= EXYNOS_VIDTCON1_HSPW(pvid->vl_hspw - 1);
+
+		writel(cfg, (unsigned int)&fimd_ctrl->vidtcon1 + offset);
+
+		/* set lcd size */
+		cfg = EXYNOS_VIDTCON2_HOZVAL(pvid->vl_col - 1) |
+			EXYNOS_VIDTCON2_LINEVAL(pvid->vl_row - 1) |
+			EXYNOS_VIDTCON2_HOZVAL_E(pvid->vl_col - 1) |
+			EXYNOS_VIDTCON2_LINEVAL_E(pvid->vl_row - 1);
+
+		writel(cfg, (unsigned int)&fimd_ctrl->vidtcon2 + offset);
+	}
+
+	/* set display mode */
+	cfg = readl(&fimd_ctrl->vidcon0);
+	cfg &= ~EXYNOS_VIDCON0_PNRMODE_MASK;
+	cfg |= (rgb_mode << EXYNOS_VIDCON0_PNRMODE_SHIFT);
+	writel(cfg, &fimd_ctrl->vidcon0);
+
+	/* set par */
+	exynos_fimd_set_par(pvid->win_id);
+
+	/* set memory address */
+	exynos_fimd_set_buffer_address(pvid->win_id);
+
+	/* set buffer size */
+	cfg = EXYNOS_VIDADDR_PAGEWIDTH(pvid->vl_col * NBITS(pvid->vl_bpix) / 8) |
+		EXYNOS_VIDADDR_PAGEWIDTH_E(pvid->vl_col * NBITS(pvid->vl_bpix) / 8) |
+		EXYNOS_VIDADDR_OFFSIZE(0) |
+		EXYNOS_VIDADDR_OFFSIZE_E(0);
+
+	writel(cfg, (unsigned int)&fimd_ctrl->vidw00add2 +
+					EXYNOS_BUFFER_SIZE(pvid->win_id));
+
+	/* set clock */
+	exynos_fimd_set_clock(pvid);
+
+	/* set rgb mode to dual lcd. */
+	exynos_fimd_set_dualrgb(pvid->dual_lcd_enabled);
+
+	/* display on */
+	exynos_fimd_lcd_on();
+
+	/* window on */
+	exynos_fimd_window_on(pvid->win_id);
+
+	exynos_fimd_set_dp_clkcon(pvid->dp_enabled);
+}
+
+unsigned long exynos_fimd_calc_fbsize(void)
+{
+	return pvid->vl_col * pvid->vl_row * (NBITS(pvid->vl_bpix) / 8);
+}