Merge branch 'next' into for-linus

3 files changed, 93 insertions, 24 deletions

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 9e7f259346e1..fcbbe71a3cc1 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -43,12 +43,12 @@ struct amba_id {
 
 struct amba_driver {
         struct device_driver    drv;
-        int                     (*probe)(struct amba_device *, struct amba_id *);
+        int                     (*probe)(struct amba_device *, const struct amba_id *);
         int                     (*remove)(struct amba_device *);
         void                    (*shutdown)(struct amba_device *);
         int                     (*suspend)(struct amba_device *, pm_message_t);
         int                     (*resume)(struct amba_device *);
-        struct amba_id          *id_table;
+        const struct amba_id    *id_table;
 };
 
 enum amba_vendor {
@@ -56,6 +56,10 @@ enum amba_vendor {
         AMBA_VENDOR_ST = 0x80,
 };
 
+extern struct bus_type amba_bustype;
+
+#define to_amba_device(d)       container_of(d, struct amba_device, dev)
+
 #define amba_get_drvdata(d)     dev_get_drvdata(&d->dev)
 #define amba_set_drvdata(d,p)   dev_set_drvdata(&d->dev, p)
 
diff --git a/include/linux/amba/clcd.h b/include/linux/amba/clcd.h
index be33b3affc8a..e82e3ee2c54a 100644
--- a/include/linux/amba/clcd.h
+++ b/include/linux/amba/clcd.h
@@ -53,6 +53,7 @@
 #define CNTL_LCDBPP8            (3 << 1)
 #define CNTL_LCDBPP16           (4 << 1)
 #define CNTL_LCDBPP16_565       (6 << 1)
+#define CNTL_LCDBPP16_444       (7 << 1)
 #define CNTL_LCDBPP24           (5 << 1)
 #define CNTL_LCDBW              (1 << 4)
 #define CNTL_LCDTFT             (1 << 5)
@@ -66,6 +67,32 @@
 #define CNTL_LDMAFIFOTIME       (1 << 15)
 #define CNTL_WATERMARK          (1 << 16)
 
+enum {
+        /* individual formats */
+        CLCD_CAP_RGB444         = (1 << 0),
+        CLCD_CAP_RGB5551        = (1 << 1),
+        CLCD_CAP_RGB565         = (1 << 2),
+        CLCD_CAP_RGB888         = (1 << 3),
+        CLCD_CAP_BGR444         = (1 << 4),
+        CLCD_CAP_BGR5551        = (1 << 5),
+        CLCD_CAP_BGR565         = (1 << 6),
+        CLCD_CAP_BGR888         = (1 << 7),
+
+        /* connection layouts */
+        CLCD_CAP_444            = CLCD_CAP_RGB444 | CLCD_CAP_BGR444,
+        CLCD_CAP_5551           = CLCD_CAP_RGB5551 | CLCD_CAP_BGR5551,
+        CLCD_CAP_565            = CLCD_CAP_RGB565 | CLCD_CAP_BGR565,
+        CLCD_CAP_888            = CLCD_CAP_RGB888 | CLCD_CAP_BGR888,
+
+        /* red/blue ordering */
+        CLCD_CAP_RGB            = CLCD_CAP_RGB444 | CLCD_CAP_RGB5551 |
+                                  CLCD_CAP_RGB565 | CLCD_CAP_RGB888,
+        CLCD_CAP_BGR            = CLCD_CAP_BGR444 | CLCD_CAP_BGR5551 |
+                                  CLCD_CAP_BGR565 | CLCD_CAP_BGR888,
+
+        CLCD_CAP_ALL            = CLCD_CAP_BGR | CLCD_CAP_RGB,
+};
+
 struct clcd_panel {
         struct fb_videomode     mode;
         signed short            width;  /* width in mm */
@@ -73,6 +100,7 @@ struct clcd_panel {
         u32                     tim2;
         u32                     tim3;
         u32                     cntl;
+        u32                     caps;
         unsigned int            bpp:8,
                                 fixedtimings:1,
                                 grayscale:1;
@@ -97,13 +125,18 @@ struct clcd_board {
         const char *name;
 
         /*
+         * Optional.  Hardware capability flags.
+         */
+        u32     caps;
+
+        /*
          * Optional.  Check whether the var structure is acceptable
          * for this display.
          */
         int     (*check)(struct clcd_fb *fb, struct fb_var_screeninfo *var);
 
         /*
-         * Compulsary.  Decode fb->fb.var into regs->*.  In the case of
+         * Compulsory.  Decode fb->fb.var into regs->*.  In the case of
          * fixed timing, set regs->* to the register values required.
          */
         void    (*decode)(struct clcd_fb *fb, struct clcd_regs *regs);
@@ -155,34 +188,35 @@ struct clcd_fb {
 
 static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)
 {
+        struct fb_var_screeninfo *var = &fb->fb.var;
         u32 val, cpl;
 
         /*
          * Program the CLCD controller registers and start the CLCD
          */
-        val = ((fb->fb.var.xres / 16) - 1) << 2;
-        val |= (fb->fb.var.hsync_len - 1) << 8;
-        val |= (fb->fb.var.right_margin - 1) << 16;
-        val |= (fb->fb.var.left_margin - 1) << 24;
+        val = ((var->xres / 16) - 1) << 2;
+        val |= (var->hsync_len - 1) << 8;
+        val |= (var->right_margin - 1) << 16;
+        val |= (var->left_margin - 1) << 24;
         regs->tim0 = val;
 
-        val = fb->fb.var.yres;
+        val = var->yres;
         if (fb->panel->cntl & CNTL_LCDDUAL)
                 val /= 2;
         val -= 1;
-        val |= (fb->fb.var.vsync_len - 1) << 10;
-        val |= fb->fb.var.lower_margin << 16;
-        val |= fb->fb.var.upper_margin << 24;
+        val |= (var->vsync_len - 1) << 10;
+        val |= var->lower_margin << 16;
+        val |= var->upper_margin << 24;
         regs->tim1 = val;
 
         val = fb->panel->tim2;
-        val |= fb->fb.var.sync & FB_SYNC_HOR_HIGH_ACT  ? 0 : TIM2_IHS;
-        val |= fb->fb.var.sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS;
+        val |= var->sync & FB_SYNC_HOR_HIGH_ACT  ? 0 : TIM2_IHS;
+        val |= var->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS;
 
-        cpl = fb->fb.var.xres_virtual;
+        cpl = var->xres_virtual;
         if (fb->panel->cntl & CNTL_LCDTFT)        /* TFT */
                 /* / 1 */;
-        else if (!fb->fb.var.grayscale)           /* STN color */
+        else if (!var->grayscale)                 /* STN color */
                 cpl = cpl * 8 / 3;
         else if (fb->panel->cntl & CNTL_LCDMONO8) /* STN monochrome, 8bit */
                 cpl /= 8;
@@ -194,10 +228,22 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)
         regs->tim3 = fb->panel->tim3;
 
         val = fb->panel->cntl;
-        if (fb->fb.var.grayscale)
+        if (var->grayscale)
                 val |= CNTL_LCDBW;
 
-        switch (fb->fb.var.bits_per_pixel) {
+        if (fb->panel->caps && fb->board->caps &&
+            var->bits_per_pixel >= 16) {
+                /*
+                 * if board and panel supply capabilities, we can support
+                 * changing BGR/RGB depending on supplied parameters
+                 */
+                if (var->red.offset == 0)
+                        val &= ~CNTL_BGR;
+                else
+                        val |= CNTL_BGR;
+        }
+
+        switch (var->bits_per_pixel) {
         case 1:
                 val |= CNTL_LCDBPP1;
                 break;
@@ -212,15 +258,17 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)
                 break;
         case 16:
                 /*
-                 * PL110 cannot choose between 5551 and 565 modes in
-                 * its control register
+                 * PL110 cannot choose between 5551 and 565 modes in its
+                 * control register.  It is possible to use 565 with
+                 * custom external wiring.
                  */
-                if ((fb->dev->periphid & 0x000fffff) == 0x00041110)
+                if (amba_part(fb->dev) == 0x110 ||
+                    var->green.length == 5)
                         val |= CNTL_LCDBPP16;
-                else if (fb->fb.var.green.length == 5)
-                        val |= CNTL_LCDBPP16;
-                else
+                else if (var->green.length == 6)
                         val |= CNTL_LCDBPP16_565;
+                else
+                        val |= CNTL_LCDBPP16_444;
                 break;
         case 32:
                 val |= CNTL_LCDBPP24;
@@ -228,7 +276,7 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)
         }
 
         regs->cntl = val;
-        regs->pixclock = fb->fb.var.pixclock;
+        regs->pixclock = var->pixclock;
 }
 
 static inline int clcdfb_check(struct clcd_fb *fb, struct fb_var_screeninfo *var)
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h
index f4ee9acc9721..21114810c7c0 100644
--- a/include/linux/amba/mmci.h
+++ b/include/linux/amba/mmci.h
@@ -6,6 +6,9 @@
 
 #include <linux/mmc/host.h>
 
+/* Just some dummy forwarding */
+struct dma_chan;
+
 /**
  * struct mmci_platform_data - platform configuration for the MMCI
  * (also known as PL180) block.
@@ -27,6 +30,17 @@
  * @cd_invert: true if the gpio_cd pin value is active low
  * @capabilities: the capabilities of the block as implemented in
  * this platform, signify anything MMC_CAP_* from mmc/host.h
+ * @dma_filter: function used to select an appropriate RX and TX
+ * DMA channel to be used for DMA, if and only if you're deploying the
+ * generic DMA engine
+ * @dma_rx_param: parameter passed to the DMA allocation
+ * filter in order to select an appropriate RX channel. If
+ * there is a bidirectional RX+TX channel, then just specify
+ * this and leave dma_tx_param set to NULL
+ * @dma_tx_param: parameter passed to the DMA allocation
+ * filter in order to select an appropriate TX channel. If this
+ * is NULL the driver will attempt to use the RX channel as a
+ * bidirectional channel
  */
 struct mmci_platform_data {
         unsigned int f_max;
@@ -38,6 +52,9 @@ struct mmci_platform_data {
         int     gpio_cd;
         bool    cd_invert;
         unsigned long capabilities;
+        bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
+        void *dma_rx_param;
+        void *dma_tx_param;
 };
 
 #endif