2 * S5PC100 and S5PC110 LCD Controller Specific driver.
4 * Author: InKi Dae <inki.dae@samsung.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <linux/types.h>
29 #include <asm/arch/clk.h>
30 #include <asm/arch/cpu.h>
31 #include <asm/arch/regs-fb.h>
32 #include <asm/arch/gpio.h>
36 #define CLK_DIV0 0xE0100300
37 #define CLK_DIV1 0xE0100304
39 /* LCD CONTROLLER REGISTER BASE */
40 #define S5PC100_LCRB 0xEE000000
41 #define S5PC110_LCRB 0xF8000000
45 static unsigned int ctrl_base;
46 static unsigned long *lcd_base_addr;
47 static vidinfo_t *pvid = NULL;
49 void s5pc_fimd_lcd_init_mem(u_long screen_base, u_long fb_size, u_long palette_size)
51 lcd_base_addr = (unsigned long *)screen_base;
53 udebug("lcd_base_addr(framebuffer memory) = %x\n", lcd_base_addr);
58 static void s5pc_fimd_set_par(unsigned int win_id)
62 /* set window control */
63 cfg = readl(ctrl_base + S5P_WINCON(win_id));
65 cfg &= ~(S5P_WINCON_BITSWP_ENABLE | S5P_WINCON_BYTESWP_ENABLE | \
66 S5P_WINCON_HAWSWP_ENABLE | S5P_WINCON_WSWP_ENABLE | \
67 S5P_WINCON_BURSTLEN_MASK | S5P_WINCON_BPPMODE_MASK | \
68 S5P_WINCON_INRGB_MASK | S5P_WINCON_DATAPATH_MASK);
71 cfg |= S5P_WINCON_DATAPATH_DMA;
74 cfg |= S5P_WINCON_WSWP_ENABLE;
77 cfg |= S5P_WINCON_BURSTLEN_16WORD;
79 /* pixel format is unpacked RGB888 */
80 cfg |= S5P_WINCON_BPPMODE_24BPP_888;
82 writel(cfg, ctrl_base + S5P_WINCON(win_id));
83 udebug("wincon%d = %x\n", win_id, cfg);
85 /* set window position to x=0, y=0*/
86 cfg = S5P_VIDOSD_LEFT_X(0) | S5P_VIDOSD_TOP_Y(0);
87 writel(cfg, ctrl_base + S5P_VIDOSD_A(win_id));
88 udebug("window postion left,top = %x\n", cfg);
90 cfg = S5P_VIDOSD_RIGHT_X(pvid->vl_col - 1) |
91 S5P_VIDOSD_BOTTOM_Y(pvid->vl_row - 1);
92 writel(cfg, ctrl_base + S5P_VIDOSD_B(win_id));
93 udebug("window postion right,bottom= %x\n", cfg);
95 /* set window size for window0*/
96 cfg = S5P_VIDOSD_SIZE(pvid->vl_col * pvid->vl_row);
97 writel(cfg, ctrl_base + S5P_VIDOSD_C(win_id));
98 udebug("vidosd_c%d= %x\n", win_id, cfg);
103 static void s5pc_fimd_set_buffer_address(unsigned int win_id)
105 unsigned long start_addr, end_addr;
107 start_addr = (unsigned long)lcd_base_addr;
108 end_addr = start_addr + ((pvid->vl_col * (pvid->vl_bpix / 8))
111 writel(start_addr, ctrl_base + S5P_VIDADDR_START0(win_id));
112 writel(end_addr, ctrl_base + S5P_VIDADDR_END0(win_id));
114 udebug("start addr = %x, end addr = %x\n", start_addr, end_addr);
119 static void s5pc_fimd_set_clock(void)
121 unsigned int cfg = 0, div = 0, mpll_ratio = 0;
122 unsigned long pixel_clock, src_clock, max_clock;
124 s5pc1xx_clock_init();
126 max_clock = 66 * 1000000;
128 pixel_clock = pvid->vl_freq * (pvid->vl_hspw + pvid->vl_hfpd +
129 pvid->vl_hbpd + pvid->vl_width) * (pvid->vl_vspw +
130 pvid->vl_vfpd + pvid->vl_vbpd + pvid->vl_height);
132 if (get_pll_clk == NULL) {
133 printf("get_pll_clk is null.\n");
136 src_clock = get_pll_clk(MPLL);
138 cfg = readl(ctrl_base + S5P_VIDCON0);
139 cfg &= ~(S5P_VIDCON0_CLKSEL_MASK | S5P_VIDCON0_CLKVALUP_MASK | \
140 S5P_VIDCON0_VCLKEN_MASK | S5P_VIDCON0_CLKDIR_MASK);
141 cfg |= (S5P_VIDCON0_CLKSEL_HCLK | S5P_VIDCON0_CLKVALUP_ALWAYS | \
142 S5P_VIDCON0_VCLKEN_NORMAL | S5P_VIDCON0_CLKDIR_DIVIDED);
144 if (pixel_clock > max_clock)
145 pixel_clock = max_clock;
148 if (cpu_is_s5pc110())
149 mpll_ratio = (readl(CLK_DIV0) & 0xf0000) >> 16;
151 mpll_ratio = (readl(CLK_DIV1) & 0xf0) >> 4;
154 * It can get source clock speed as (mpll / mpll_ratio)
155 * because lcd controller uses hclk_dsys.
156 * mpll is a parent of hclk_dsys.
158 div = (unsigned int)((src_clock / (mpll_ratio + 1)) / pixel_clock);
159 cfg |= S5P_VIDCON0_CLKVAL_F(div - 1);
160 writel(cfg, ctrl_base + S5P_VIDCON0);
162 udebug("mpll_ratio = %d, src_clock = %d, pixel_clock = %d, div = %d\n",
163 mpll_ratio, src_clock, pixel_clock, div);
168 static void s5pc_fimd_lcd_on(unsigned int win_id)
170 unsigned int cfg = 0;
173 cfg = readl(ctrl_base + S5P_VIDCON0);
174 cfg |= (S5P_VIDCON0_ENVID_ENABLE | S5P_VIDCON0_ENVID_F_ENABLE);
175 writel(cfg, ctrl_base + S5P_VIDCON0);
176 udebug("vidcon0 = %x\n", cfg);
179 cfg = readl(ctrl_base + S5P_WINCON(win_id));
180 cfg |= S5P_WINCON_ENWIN_ENABLE;
181 writel(cfg, ctrl_base + S5P_WINCON(win_id));
182 udebug("wincon%d=%x\n", win_id, cfg);
185 void s5pc_fimc_lcd_off(unsigned int win_id)
187 unsigned int cfg = 0;
189 cfg = readl(ctrl_base + S5P_VIDCON0);
190 cfg &= (S5P_VIDCON0_ENVID_DISABLE | S5P_VIDCON0_ENVID_F_DISABLE);
191 writel(cfg, ctrl_base + S5P_VIDCON0);
193 cfg = readl(ctrl_base + S5P_WINCON(win_id));
194 cfg &= S5P_WINCON_ENWIN_DISABLE;
195 writel(cfg, ctrl_base + S5P_WINCON(win_id));
199 void s5pc_fimd_lcd_init(vidinfo_t *vid)
201 unsigned int cfg = 0, rgb_mode, win_id = 3;
203 /* store panel info to global variable */
206 /* select register base according to cpu type */
207 if (cpu_is_s5pc110())
208 ctrl_base = S5PC110_LCRB;
210 ctrl_base = S5PC100_LCRB;
212 /* set output to RGB */
213 rgb_mode = MODE_RGB_P;
214 cfg = readl(ctrl_base + S5P_VIDCON0);
215 cfg &= ~S5P_VIDCON0_VIDOUT_MASK;
217 /* clock source is HCLK */
220 cfg |= S5P_VIDCON0_VIDOUT_RGB;
221 writel(cfg, ctrl_base + S5P_VIDCON0);
223 /* set display mode */
224 cfg = readl(ctrl_base + S5P_VIDCON0);
225 cfg &= ~S5P_VIDCON0_PNRMODE_MASK;
226 cfg |= (rgb_mode << S5P_VIDCON0_PNRMODE_SHIFT);
227 writel(cfg, ctrl_base + S5P_VIDCON0);
232 cfg |= S5P_VIDCON1_IVCLK_RISING_EDGE;
234 cfg |= S5P_VIDCON1_IHSYNC_INVERT;
236 cfg |= S5P_VIDCON1_IVSYNC_INVERT;
238 cfg |= S5P_VIDCON1_IVDEN_INVERT;
240 writel(cfg, ctrl_base + S5P_VIDCON1);
244 cfg |= S5P_VIDTCON0_VFPD(pvid->vl_vfpd - 1);
245 cfg |= S5P_VIDTCON0_VBPD(pvid->vl_vbpd - 1);
246 cfg |= S5P_VIDTCON0_VSPW(pvid->vl_vspw - 1);
247 writel(cfg, ctrl_base + S5P_VIDTCON0);
248 udebug("vidtcon0 = %x\n", cfg);
251 cfg |= S5P_VIDTCON1_HFPD(pvid->vl_hfpd - 1);
252 cfg |= S5P_VIDTCON1_HBPD(pvid->vl_hbpd - 1);
253 cfg |= S5P_VIDTCON1_HSPW(pvid->vl_hspw - 1);
255 writel(cfg, ctrl_base + S5P_VIDTCON1);
256 udebug("vidtcon1 = %x\n", cfg);
260 cfg |= S5P_VIDTCON2_HOZVAL(pvid->vl_col - 1);
261 cfg |= S5P_VIDTCON2_LINEVAL(pvid->vl_row - 1);
263 writel(cfg, ctrl_base + S5P_VIDTCON2);
264 udebug("vidtcon2 = %x\n", cfg);
267 s5pc_fimd_set_par(win_id);
269 /* set memory address */
270 s5pc_fimd_set_buffer_address(win_id);
272 /* set buffer size */
273 cfg = S5P_VIDADDR_PAGEWIDTH(pvid->vl_col * pvid->vl_bpix / 8);
274 writel(cfg, ctrl_base + S5P_VIDADDR_SIZE(win_id));
275 udebug("vidaddr_pagewidth = %d\n", cfg);
278 s5pc_fimd_set_clock();
281 s5pc_fimd_lcd_on(win_id);
283 udebug("lcd controller init completed.\n");
288 ulong s5pc_fimd_calc_fbsize(void)
290 return (pvid->vl_col * pvid->vl_row * (pvid->vl_bpix / 8));