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path: root/drivers/video/fbdev/au1200fb.c
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Diffstat (limited to 'drivers/video/fbdev/au1200fb.c')
-rw-r--r--drivers/video/fbdev/au1200fb.c81
1 files changed, 38 insertions, 43 deletions
diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c
index 4cfba78a1458..40494dbdf519 100644
--- a/drivers/video/fbdev/au1200fb.c
+++ b/drivers/video/fbdev/au1200fb.c
@@ -30,6 +30,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
@@ -330,9 +331,8 @@ struct panel_settings
uint32 mode_pwmhi;
uint32 mode_outmask;
uint32 mode_fifoctrl;
- uint32 mode_toyclksrc;
uint32 mode_backlight;
- uint32 mode_auxpll;
+ uint32 lcdclk;
#define Xres min_xres
#define Yres min_yres
u32 min_xres; /* Minimum horizontal resolution */
@@ -379,9 +379,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
320, 320,
240, 240,
},
@@ -407,9 +406,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
640, 480,
640, 480,
},
@@ -435,9 +433,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
800, 800,
600, 600,
},
@@ -463,9 +460,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 6, /* 72MHz AUXPLL */
+ .lcdclk = 72,
1024, 1024,
768, 768,
},
@@ -491,9 +487,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 10, /* 120MHz AUXPLL */
+ .lcdclk = 120,
1280, 1280,
1024, 1024,
},
@@ -519,9 +514,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x03400000, /* SCB 0x0 */
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
1024, 1024,
768, 768,
},
@@ -550,9 +544,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
640, 480,
640, 480,
},
@@ -581,9 +574,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96, /* 96MHz AUXPLL */
320, 320,
240, 240,
},
@@ -612,9 +604,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .lcdclk = 96,
856, 856,
480, 480,
},
@@ -646,9 +637,8 @@ static struct panel_settings known_lcd_panels[] =
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
- .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
.mode_backlight = 0x00000000,
- .mode_auxpll = (48/12) * 2,
+ .lcdclk = 96,
800, 800,
480, 480,
},
@@ -764,7 +754,7 @@ static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
/* Disable the window while making changes, then restore WINEN */
winenable = lcd->winenable & (1 << plane);
- au_sync();
+ wmb(); /* drain writebuffer */
lcd->winenable &= ~(1 << plane);
lcd->window[plane].winctrl0 = winctrl0;
lcd->window[plane].winctrl1 = winctrl1;
@@ -772,7 +762,7 @@ static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
lcd->window[plane].winbuf1 = fbdev->fb_phys;
lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
lcd->winenable |= winenable;
- au_sync();
+ wmb(); /* drain writebuffer */
return 0;
}
@@ -788,22 +778,21 @@ static void au1200_setpanel(struct panel_settings *newpanel,
/* Make sure all windows disabled */
winenable = lcd->winenable;
lcd->winenable = 0;
- au_sync();
+ wmb(); /* drain writebuffer */
/*
* Ensure everything is disabled before reconfiguring
*/
if (lcd->screen & LCD_SCREEN_SEN) {
/* Wait for vertical sync period */
lcd->intstatus = LCD_INT_SS;
- while ((lcd->intstatus & LCD_INT_SS) == 0) {
- au_sync();
- }
+ while ((lcd->intstatus & LCD_INT_SS) == 0)
+ ;
lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
do {
lcd->intstatus = lcd->intstatus; /*clear interrupts*/
- au_sync();
+ wmb(); /* drain writebuffer */
/*wait for controller to shut down*/
} while ((lcd->intstatus & LCD_INT_SD) == 0);
@@ -829,11 +818,17 @@ static void au1200_setpanel(struct panel_settings *newpanel,
*/
if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
{
- uint32 sys_clksrc;
- au_writel(panel->mode_auxpll, SYS_AUXPLL);
- sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
- sys_clksrc |= panel->mode_toyclksrc;
- au_writel(sys_clksrc, SYS_CLKSRC);
+ struct clk *c = clk_get(NULL, "lcd_intclk");
+ long r, pc = panel->lcdclk * 1000000;
+
+ if (!IS_ERR(c)) {
+ r = clk_round_rate(c, pc);
+ if ((pc - r) < (pc / 10)) { /* 10% slack */
+ clk_set_rate(c, r);
+ clk_prepare_enable(c);
+ }
+ clk_put(c);
+ }
}
/*
@@ -847,7 +842,7 @@ static void au1200_setpanel(struct panel_settings *newpanel,
lcd->pwmhi = panel->mode_pwmhi;
lcd->outmask = panel->mode_outmask;
lcd->fifoctrl = panel->mode_fifoctrl;
- au_sync();
+ wmb(); /* drain writebuffer */
/* fixme: Check window settings to make sure still valid
* for new geometry */
@@ -863,7 +858,7 @@ static void au1200_setpanel(struct panel_settings *newpanel,
* Re-enable screen now that it is configured
*/
lcd->screen |= LCD_SCREEN_SEN;
- au_sync();
+ wmb(); /* drain writebuffer */
/* Call init of panel */
if (pd->panel_init)
@@ -956,7 +951,7 @@ static void au1200_setmode(struct au1200fb_device *fbdev)
| LCD_WINCTRL2_SCY_1
) ;
lcd->winenable |= win->w[plane].mode_winenable;
- au_sync();
+ wmb(); /* drain writebuffer */
}
@@ -1270,7 +1265,7 @@ static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
if (pdata->flags & SCREEN_MASK)
lcd->colorkeymsk = pdata->mask;
- au_sync();
+ wmb(); /* drain writebuffer */
}
static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
@@ -1288,7 +1283,7 @@ static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
hi1 = (lcd->pwmhi >> 16) + 1;
divider = (lcd->pwmdiv & 0x3FFFF) + 1;
pdata->brightness = ((hi1 << 8) / divider) - 1;
- au_sync();
+ wmb(); /* drain writebuffer */
}
static void set_window(unsigned int plane,
@@ -1387,7 +1382,7 @@ static void set_window(unsigned int plane,
val |= (pdata->enable & 1) << plane;
lcd->winenable = val;
}
- au_sync();
+ wmb(); /* drain writebuffer */
}
static void get_window(unsigned int plane,
@@ -1414,7 +1409,7 @@ static void get_window(unsigned int plane,
pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
pdata->enable = (lcd->winenable >> plane) & 1;
- au_sync();
+ wmb(); /* drain writebuffer */
}
static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
@@ -1511,7 +1506,7 @@ static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
{
/* Nothing to do for now, just clear any pending interrupt */
lcd->intstatus = lcd->intstatus;
- au_sync();
+ wmb(); /* drain writebuffer */
return IRQ_HANDLED;
}
@@ -1809,7 +1804,7 @@ static int au1200fb_drv_suspend(struct device *dev)
au1200_setpanel(NULL, pd);
lcd->outmask = 0;
- au_sync();
+ wmb(); /* drain writebuffer */
return 0;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-09-12 05:28:35 +0000