EXYNOS: support EXYNOS framebuffer and FIMD display drivers.

This patch support EXYNOS FB and FIMD display drivers.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Anatolij Gustschin <agust@denx.de>

4 files changed, 544 insertions, 0 deletions

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 6252f6a..8896abe 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -28,6 +28,7 @@ LIB	:= $(obj)libvideo.o
 COBJS-$(CONFIG_ATI_RADEON_FB) += ati_radeon_fb.o videomodes.o
 COBJS-$(CONFIG_ATMEL_LCD) += atmel_lcdfb.o
 COBJS-$(CONFIG_CFB_CONSOLE) += cfb_console.o
+COBJS-$(CONFIG_EXYNOS_FB) += exynos_fb.o exynos_fimd.o
 COBJS-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
 COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
 COBJS-$(CONFIG_SED156X) += sed156x.o
diff --git a/drivers/video/exynos_fb.c b/drivers/video/exynos_fb.c
new file mode 100644
index 0000000..0eb7f58
--- /dev/null
+++ b/drivers/video/exynos_fb.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: InKi Dae <inki.dae@samsung.com>
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <lcd.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/mipi_dsim.h>
+#include <asm/arch/system.h>
+
+#include "exynos_fb.h"
+
+int lcd_line_length;
+int lcd_color_fg;
+int lcd_color_bg;
+
+void *lcd_base;
+void *lcd_console_address;
+
+short console_col;
+short console_row;
+
+static unsigned int panel_width, panel_height;
+
+/* LCD Panel data */
+vidinfo_t panel_info;
+
+static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
+{
+	unsigned long palette_size;
+	unsigned int fb_size;
+
+	fb_size = vid->vl_row * vid->vl_col * (vid->vl_bpix >> 3);
+
+	lcd_base = lcdbase;
+
+	palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
+
+	exynos_fimd_lcd_init_mem((unsigned long)lcd_base,
+			(unsigned long)fb_size, palette_size);
+}
+
+static void exynos_lcd_init(vidinfo_t *vid)
+{
+	exynos_fimd_lcd_init(vid);
+}
+
+static void lcd_panel_on(vidinfo_t *vid)
+{
+	udelay(vid->init_delay);
+
+	if (vid->backlight_reset)
+		vid->backlight_reset();
+
+	if (vid->cfg_gpio)
+		vid->cfg_gpio();
+
+	if (vid->lcd_power_on)
+		vid->lcd_power_on();
+
+	udelay(vid->power_on_delay);
+
+	if (vid->reset_lcd) {
+		vid->reset_lcd();
+		udelay(vid->reset_delay);
+	}
+
+	if (vid->backlight_on)
+		vid->backlight_on(1);
+
+	if (vid->cfg_ldo)
+		vid->cfg_ldo();
+
+	if (vid->enable_ldo)
+		vid->enable_ldo(1);
+
+	if (vid->mipi_enabled)
+		exynos_mipi_dsi_init();
+}
+
+void lcd_ctrl_init(void *lcdbase)
+{
+	set_system_display_ctrl();
+	set_lcd_clk();
+
+	/* initialize parameters which is specific to panel. */
+	init_panel_info(&panel_info);
+
+	panel_width = panel_info.vl_width;
+	panel_height = panel_info.vl_height;
+
+	exynos_lcd_init_mem(lcdbase, &panel_info);
+
+	exynos_lcd_init(&panel_info);
+}
+
+void lcd_enable(void)
+{
+	lcd_panel_on(&panel_info);
+}
+
+/* dummy function */
+void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
+{
+	return;
+}
diff --git a/drivers/video/exynos_fb.h b/drivers/video/exynos_fb.h
new file mode 100644
index 0000000..66f5da6
--- /dev/null
+++ b/drivers/video/exynos_fb.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: InKi Dae <inki.dae@samsung.com>
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _EXYNOS_FB_H_
+#define _EXYNOS_FB_H_
+
+#include <asm/arch/fb.h>
+
+#define MAX_CLOCK	(86 * 1000000)
+
+enum exynos_fb_rgb_mode_t {
+	MODE_RGB_P = 0,
+	MODE_BGR_P = 1,
+	MODE_RGB_S = 2,
+	MODE_BGR_S = 3,
+};
+
+enum exynos_cpu_auto_cmd_rate {
+	DISABLE_AUTO_FRM,
+	PER_TWO_FRM,
+	PER_FOUR_FRM,
+	PER_SIX_FRM,
+	PER_EIGHT_FRM,
+	PER_TEN_FRM,
+	PER_TWELVE_FRM,
+	PER_FOURTEEN_FRM,
+	PER_SIXTEEN_FRM,
+	PER_EIGHTEEN_FRM,
+	PER_TWENTY_FRM,
+	PER_TWENTY_TWO_FRM,
+	PER_TWENTY_FOUR_FRM,
+	PER_TWENTY_SIX_FRM,
+	PER_TWENTY_EIGHT_FRM,
+	PER_THIRTY_FRM,
+};
+
+void exynos_fimd_lcd_init_mem(unsigned long screen_base, unsigned long fb_size,
+	unsigned long palette_size);
+void exynos_fimd_lcd_init(vidinfo_t *vid);
+unsigned long exynos_fimd_calc_fbsize(void);
+
+#endif
diff --git a/drivers/video/exynos_fimd.c b/drivers/video/exynos_fimd.c
new file mode 100644
index 0000000..2a60fcf
--- /dev/null
+++ b/drivers/video/exynos_fimd.c
@@ -0,0 +1,354 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: InKi Dae <inki.dae@samsung.com>
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <lcd.h>
+#include <div64.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cpu.h>
+#include "exynos_fb.h"
+
+static unsigned long *lcd_base_addr;
+static vidinfo_t *pvid;
+
+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)
+{
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+	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_par(unsigned int win_id)
+{
+	unsigned int cfg = 0;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	/* 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;
+
+	/* bpp is 32 */
+	cfg |= EXYNOS_WINCON_WSWP_ENABLE;
+
+	/* dma burst is 16 */
+	cfg |= EXYNOS_WINCON_BURSTLEN_16WORD;
+
+	/* pixel format is unpacked RGB888 */
+	cfg |= EXYNOS_WINCON_BPPMODE_24BPP_888;
+
+	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);
+	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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	start_addr = (unsigned long)lcd_base_addr;
+	end_addr = start_addr + ((pvid->vl_col * (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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	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);
+
+	if (pixel_clock > MAX_CLOCK)
+		pixel_clock = MAX_CLOCK;
+
+	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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	/* 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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	/* 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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	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;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	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);
+}
+
+void exynos_fimd_lcd_init(vidinfo_t *vid)
+{
+	unsigned int cfg = 0, rgb_mode;
+	struct exynos4_fb *fimd_ctrl =
+		(struct exynos4_fb *)samsung_get_base_fimd();
+
+	/* store panel info to global variable */
+	pvid = vid;
+
+	rgb_mode = MODE_RGB_P;
+
+	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, &fimd_ctrl->vidcon1);
+
+		/* 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, &fimd_ctrl->vidtcon0);
+
+		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, &fimd_ctrl->vidtcon1);
+
+		/* set lcd size */
+		cfg = EXYNOS_VIDTCON2_HOZVAL(pvid->vl_col - 1);
+		cfg |= EXYNOS_VIDTCON2_LINEVAL(pvid->vl_row - 1);
+
+		writel(cfg, &fimd_ctrl->vidtcon2);
+	}
+
+	/* 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 * pvid->vl_bpix / 8);
+	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);
+}
+
+unsigned long exynos_fimd_calc_fbsize(void)
+{
+	return pvid->vl_col * pvid->vl_row * (pvid->vl_bpix / 8);
+}