pxafb: preliminary smart panel interface support

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 56 insertions, 4 deletions

diff --git a/include/asm-arm/arch-pxa/pxafb.h b/include/asm-arm/arch-pxa/pxafb.h
index 41a6c2297f9f..bbd22396841a 100644
--- a/include/asm-arm/arch-pxa/pxafb.h
+++ b/include/asm-arm/arch-pxa/pxafb.h
@@ -48,6 +48,7 @@
 #define LCD_COLOR_DSTN_16BPP    ((16 << 4) | LCD_TYPE_COLOR_DSTN)
 #define LCD_COLOR_TFT_16BPP     ((16 << 4) | LCD_TYPE_COLOR_TFT)
 #define LCD_COLOR_TFT_18BPP     ((18 << 4) | LCD_TYPE_COLOR_TFT)
+#define LCD_SMART_PANEL_8BPP    ((8  << 4) | LCD_TYPE_SMART_PANEL)
 #define LCD_SMART_PANEL_16BPP   ((16 << 4) | LCD_TYPE_SMART_PANEL)
 #define LCD_SMART_PANEL_18BPP   ((18 << 4) | LCD_TYPE_SMART_PANEL)
 
@@ -69,6 +70,10 @@ struct pxafb_mode_info {
         u_short         yres;
 
         u_char          bpp;
+        u_int           cmap_greyscale:1,
+                        unused:31;
+
+        /* Parallel Mode Timing */
         u_char          hsync_len;
         u_char          left_margin;
         u_char          right_margin;
@@ -78,8 +83,20 @@ struct pxafb_mode_info {
         u_char          lower_margin;
         u_char          sync;
 
-        u_int           cmap_greyscale:1,
-                        unused:31;
+        /* Smart Panel Mode Timing - see PXA27x DM 7.4.15.0.3 for details
+         * Note:
+         * 1. all parameters in nanosecond (ns)
+         * 2. a0cs{rd,wr}_set_hld are controlled by the same register bits
+         *    in pxa27x and pxa3xx, initialize them to the same value or
+         *    the larger one will be used
+         * 3. same to {rd,wr}_pulse_width
+         */
+        unsigned        a0csrd_set_hld; /* A0 and CS Setup/Hold Time before/after L_FCLK_RD */
+        unsigned        a0cswr_set_hld; /* A0 and CS Setup/Hold Time before/after L_PCLK_WR */
+        unsigned        wr_pulse_width; /* L_PCLK_WR pulse width */
+        unsigned        rd_pulse_width; /* L_FCLK_RD pulse width */
+        unsigned        cmd_inh_time;   /* Command Inhibit time between two writes */
+        unsigned        op_hold_time;   /* Output Hold time from L_FCLK_RD negation */
 };
 
 struct pxafb_mach_info {
@@ -123,8 +140,11 @@ struct pxafb_mach_info {
         u_int           lccr4;
         void (*pxafb_backlight_power)(int);
         void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *);
-
+        void (*smart_update)(struct fb_info *);
 };
 void set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info);
 void set_pxa_fb_parent(struct device *parent_dev);
 unsigned long pxafb_get_hsync_time(struct device *dev);
+
+extern int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int);
+extern int pxafb_smart_flush(struct fb_info *info);
diff --git a/include/asm-arm/arch-pxa/regs-lcd.h b/include/asm-arm/arch-pxa/regs-lcd.h
index f84dd47be28a..f762493f5141 100644
--- a/include/asm-arm/arch-pxa/regs-lcd.h
+++ b/include/asm-arm/arch-pxa/regs-lcd.h
@@ -7,7 +7,8 @@
 #define LCCR1           (0x004) /* LCD Controller Control Register 1 */
 #define LCCR2           (0x008) /* LCD Controller Control Register 2 */
 #define LCCR3           (0x00C) /* LCD Controller Control Register 3 */
-#define LCCR4           (0x010) /* LCD Controller Control Register 3 */
+#define LCCR4           (0x010) /* LCD Controller Control Register 4 */
+#define LCCR5           (0x014) /* LCD Controller Control Register 5 */
 #define DFBR0           (0x020) /* DMA Channel 0 Frame Branch Register */
 #define DFBR1           (0x024) /* DMA Channel 1 Frame Branch Register */
 #define LCSR            (0x038) /* LCD Controller Status Register */
@@ -15,6 +16,9 @@
 #define TMEDRGBR        (0x040) /* TMED RGB Seed Register */
 #define TMEDCR          (0x044) /* TMED Control Register */
 
+#define CMDCR           (0x100) /* Command Control Register */
+#define PRSR            (0x104) /* Panel Read Status Register */
+
 #define LCCR3_1BPP      (0 << 24)
 #define LCCR3_2BPP      (1 << 24)
 #define LCCR3_4BPP      (2 << 24)
@@ -39,6 +43,9 @@
 #define FSADR1          (0x214) /* DMA Channel 1 Frame Source Address Register */
 #define FIDR1           (0x218) /* DMA Channel 1 Frame ID Register */
 #define LDCMD1          (0x21C) /* DMA Channel 1 Command Register */
+#define FDADR6          (0x260) /* DMA Channel 6 Frame Descriptor Address Register */
+#define FSADR6          (0x264) /* DMA Channel 6 Frame Source Address Register */
+#define FIDR6           (0x268) /* DMA Channel 6 Frame ID Register */
 
 #define LCCR0_ENB       (1 << 0)        /* LCD Controller enable */
 #define LCCR0_CMS       (1 << 1)        /* Color/Monochrome Display Select */
@@ -122,6 +129,11 @@
 #define LCCR3_VrtSnchH  (LCCR3_VSP*0)   /*  VSP Active High */
 #define LCCR3_VrtSnchL  (LCCR3_VSP*1)   /*  VSP Active Low */
 
+#define LCCR5_IUM(x)    (1 << ((x) + 23)) /* input underrun mask */
+#define LCCR5_BSM(x)    (1 << ((x) + 15)) /* branch mask */
+#define LCCR5_EOFM(x)   (1 << ((x) + 7))  /* end of frame mask */
+#define LCCR5_SOFM(x)   (1 << ((x) + 0))  /* start of frame mask */
+
 #define LCSR_LDD        (1 << 0)        /* LCD Disable Done */
 #define LCSR_SOF        (1 << 1)        /* Start of frame */
 #define LCSR_BER        (1 << 2)        /* Bus error */
@@ -133,7 +145,27 @@
 #define LCSR_EOF        (1 << 8)        /* end of frame */
 #define LCSR_BS         (1 << 9)        /* branch status */
 #define LCSR_SINT       (1 << 10)       /* subsequent interrupt */
+#define LCSR_RD_ST      (1 << 11)       /* read status */
+#define LCSR_CMD_INT    (1 << 12)       /* command interrupt */
 
 #define LDCMD_PAL       (1 << 26)       /* instructs DMA to load palette buffer */
 
+/* smartpanel related */
+#define PRSR_DATA(x)    ((x) & 0xff)    /* Panel Data */
+#define PRSR_A0         (1 << 8)        /* Read Data Source */
+#define PRSR_ST_OK      (1 << 9)        /* Status OK */
+#define PRSR_CON_NT     (1 << 10)       /* Continue to Next Command */
+
+#define SMART_CMD_A0                     (0x1 << 8)
+#define SMART_CMD_READ_STATUS_REG        (0x0 << 9)
+#define SMART_CMD_READ_FRAME_BUFFER     ((0x0 << 9) | SMART_CMD_A0)
+#define SMART_CMD_WRITE_COMMAND          (0x1 << 9)
+#define SMART_CMD_WRITE_DATA            ((0x1 << 9) | SMART_CMD_A0)
+#define SMART_CMD_WRITE_FRAME           ((0x2 << 9) | SMART_CMD_A0)
+#define SMART_CMD_WAIT_FOR_VSYNC         (0x3 << 9)
+#define SMART_CMD_NOOP                   (0x4 << 9)
+#define SMART_CMD_INTERRUPT              (0x5 << 9)
+
+#define SMART_CMD(x)    (SMART_CMD_WRITE_COMMAND | ((x) & 0xff))
+#define SMART_DAT(x)    (SMART_CMD_WRITE_DATA | ((x) & 0xff))
 #endif /* __ASM_ARCH_REGS_LCD_H */