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u-boot/drivers/video/exynos_fimd.c
Ajay Kumar 9169543d1e video: exynos_fb: Add the missing #else clause 
This patch fixes a bug introduced while adding DT support
to Exynos FIMD driver:

	commit c23f3157d6
	Author: Ajay Kumar <ajaykumar.rs@samsung.com>
	Date:   Thu Feb 21 23:53:01 2013 +0000

	    video: exynos_fb: add DT support for FIMD driver

Even though this part of code was missing, things were working
fine on Exynos5250 because, samsung_get_base_fimd() used
to give the correct base address for Exynos5250 FIMD.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-06-21 09:14:15 +09:00

378 lines
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/*
* 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 <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;
if (pvid->logo_on) /* To get proprietary LOGO */
cfg |= EXYNOS_WINCON_WSWP_ENABLE;
else /* To get output console on LCD */
cfg |= EXYNOS_WINCON_HAWSWP_ENABLE;
/* dma burst is 16 */
cfg |= EXYNOS_WINCON_BURSTLEN_16WORD;
if (pvid->logo_on) /* To get proprietary LOGO */
cfg |= EXYNOS_WINCON_BPPMODE_24BPP_888;
else /* To get output console on LCD */
cfg |= EXYNOS_WINCON_BPPMODE_16BPP_565;
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);
}
void exynos_fimd_lcd_init(vidinfo_t *vid)
{
unsigned int cfg = 0, rgb_mode;
unsigned int offset;
#ifdef CONFIG_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");
#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);
}
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