1 files changed, 78 insertions, 28 deletions

diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index bbb07106cd54..3bc5da4a57ca 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -59,7 +59,7 @@
 #define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP|LCCR3_VSP|LCCR3_PCD|LCCR3_BPP)
 
 static void (*pxafb_backlight_power)(int);
-static void (*pxafb_lcd_power)(int);
+static void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *);
 
 static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *);
 static void set_ctrlr_state(struct pxafb_info *fbi, u_int state);
@@ -214,6 +214,48 @@ extern unsigned int get_clk_frequency_khz(int info);
 #endif
 
 /*
+ * Select the smallest mode that allows the desired resolution to be
+ * displayed. If desired parameters can be rounded up.
+ */
+static struct pxafb_mode_info *pxafb_getmode(struct pxafb_mach_info *mach, struct fb_var_screeninfo *var)
+{
+        struct pxafb_mode_info *mode = NULL;
+        struct pxafb_mode_info *modelist = mach->modes;
+        unsigned int best_x = 0xffffffff, best_y = 0xffffffff;
+        unsigned int i;
+
+        for (i = 0 ; i < mach->num_modes ; i++) {
+                if (modelist[i].xres >= var->xres && modelist[i].yres >= var->yres &&
+                                modelist[i].xres < best_x && modelist[i].yres < best_y &&
+                                modelist[i].bpp >= var->bits_per_pixel ) {
+                        best_x = modelist[i].xres;
+                        best_y = modelist[i].yres;
+                        mode = &modelist[i];
+                }
+        }
+
+        return mode;
+}
+
+static void pxafb_setmode(struct fb_var_screeninfo *var, struct pxafb_mode_info *mode)
+{
+        var->xres               = mode->xres;
+        var->yres               = mode->yres;
+        var->bits_per_pixel     = mode->bpp;
+        var->pixclock           = mode->pixclock;
+        var->hsync_len          = mode->hsync_len;
+        var->left_margin        = mode->left_margin;
+        var->right_margin       = mode->right_margin;
+        var->vsync_len          = mode->vsync_len;
+        var->upper_margin       = mode->upper_margin;
+        var->lower_margin       = mode->lower_margin;
+        var->sync               = mode->sync;
+        var->grayscale          = mode->cmap_greyscale;
+        var->xres_virtual       = var->xres;
+        var->yres_virtual       = var->yres;
+}
+
+/*
  *  pxafb_check_var():
  *    Get the video params out of 'var'. If a value doesn't fit, round it up,
  *    if it's too big, return -EINVAL.
@@ -225,15 +267,29 @@ extern unsigned int get_clk_frequency_khz(int info);
 static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
         struct pxafb_info *fbi = (struct pxafb_info *)info;
+        struct pxafb_mach_info *inf = fbi->dev->platform_data;
 
         if (var->xres < MIN_XRES)
                 var->xres = MIN_XRES;
         if (var->yres < MIN_YRES)
                 var->yres = MIN_YRES;
-        if (var->xres > fbi->max_xres)
-                return -EINVAL;
-        if (var->yres > fbi->max_yres)
-                return -EINVAL;
+
+        if (inf->fixed_modes) {
+                struct pxafb_mode_info *mode;
+
+                mode = pxafb_getmode(inf, var);
+                if (!mode)
+                        return -EINVAL;
+                pxafb_setmode(var, mode);
+        } else {
+                if (var->xres > inf->modes->xres)
+                        return -EINVAL;
+                if (var->yres > inf->modes->yres)
+                        return -EINVAL;
+                if (var->bits_per_pixel > inf->modes->bpp)
+                        return -EINVAL;
+        }
+
         var->xres_virtual =
                 max(var->xres_virtual, var->xres);
         var->yres_virtual =
@@ -693,7 +749,7 @@ static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on)
         pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff");
 
         if (pxafb_lcd_power)
-                pxafb_lcd_power(on);
+                pxafb_lcd_power(on, &fbi->fb.var);
 }
 
 static void pxafb_setup_gpio(struct pxafb_info *fbi)
@@ -869,9 +925,11 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
                  * registers.
                  */
                 if (old_state == C_ENABLE) {
+                        __pxafb_lcd_power(fbi, 0);
                         pxafb_disable_controller(fbi);
                         pxafb_setup_gpio(fbi);
                         pxafb_enable_controller(fbi);
+                        __pxafb_lcd_power(fbi, 1);
                 }
                 break;
 
@@ -1049,6 +1107,8 @@ static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
         struct pxafb_info *fbi;
         void *addr;
         struct pxafb_mach_info *inf = dev->platform_data;
+        struct pxafb_mode_info *mode = inf->modes;
+        int i, smemlen;
 
         /* Alloc the pxafb_info and pseudo_palette in one step */
         fbi = kmalloc(sizeof(struct pxafb_info) + sizeof(u32) * 16, GFP_KERNEL);
@@ -1082,31 +1142,21 @@ static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
         addr = addr + sizeof(struct pxafb_info);
         fbi->fb.pseudo_palette  = addr;
 
-        fbi->max_xres                   = inf->xres;
-        fbi->fb.var.xres                = inf->xres;
-        fbi->fb.var.xres_virtual        = inf->xres;
-        fbi->max_yres                   = inf->yres;
-        fbi->fb.var.yres                = inf->yres;
-        fbi->fb.var.yres_virtual        = inf->yres;
-        fbi->max_bpp                    = inf->bpp;
-        fbi->fb.var.bits_per_pixel      = inf->bpp;
-        fbi->fb.var.pixclock            = inf->pixclock;
-        fbi->fb.var.hsync_len           = inf->hsync_len;
-        fbi->fb.var.left_margin         = inf->left_margin;
-        fbi->fb.var.right_margin        = inf->right_margin;
-        fbi->fb.var.vsync_len           = inf->vsync_len;
-        fbi->fb.var.upper_margin        = inf->upper_margin;
-        fbi->fb.var.lower_margin        = inf->lower_margin;
-        fbi->fb.var.sync                = inf->sync;
-        fbi->fb.var.grayscale           = inf->cmap_greyscale;
+        pxafb_setmode(&fbi->fb.var, mode);
+
         fbi->cmap_inverse               = inf->cmap_inverse;
         fbi->cmap_static                = inf->cmap_static;
+
         fbi->lccr0                      = inf->lccr0;
         fbi->lccr3                      = inf->lccr3;
         fbi->state                      = C_STARTUP;
         fbi->task_state                 = (u_char)-1;
-        fbi->fb.fix.smem_len            = fbi->max_xres * fbi->max_yres *
-                                          fbi->max_bpp / 8;
+
+        for (i = 0; i < inf->num_modes; i++) {
+                smemlen = mode[i].xres * mode[i].yres * mode[i].bpp / 8;
+                if (smemlen > fbi->fb.fix.smem_len)
+                        fbi->fb.fix.smem_len = smemlen;
+        }
 
         init_waitqueue_head(&fbi->ctrlr_wait);
         INIT_WORK(&fbi->task, pxafb_task, fbi);
@@ -1307,12 +1357,12 @@ int __init pxafb_probe(struct platform_device *dev)
             (inf->lccr0 & LCCR0_SDS) == LCCR0_Dual)
                 dev_warn(&dev->dev, "Dual panel only valid in passive mode\n");
         if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas &&
-             (inf->upper_margin || inf->lower_margin))
+             (inf->modes->upper_margin || inf->modes->lower_margin))
                 dev_warn(&dev->dev, "Upper and lower margins must be 0 in passive mode\n");
 #endif
 
-        dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",inf->xres, inf->yres, inf->bpp);
-        if (inf->xres == 0 || inf->yres == 0 || inf->bpp == 0) {
+        dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",inf->modes->xres, inf->modes->yres, inf->modes->bpp);
+        if (inf->modes->xres == 0 || inf->modes->yres == 0 || inf->modes->bpp == 0) {
                 dev_err(&dev->dev, "Invalid resolution or bit depth\n");
                 ret = -EINVAL;
                 goto failed;