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Subject[PATCH 1/2] pxafb: frame buffer overlay support for PXA27x.
From: Rodolfo Giometti <giometti@linux.it>

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
---
arch/arm/mach-pxa/include/mach/regs-lcd.h | 39 +
drivers/video/Kconfig | 6 +
drivers/video/Makefile | 1 +
drivers/video/pxafb.c | 75 ++-
drivers/video/pxafb.h | 74 ++
drivers/video/pxafb_overlay.c | 1476 +++++++++++++++++++++++++++++
6 files changed, 1654 insertions(+), 17 deletions(-)
create mode 100644 drivers/video/pxafb_overlay.c
diff --git a/arch/arm/mach-pxa/include/mach/regs-lcd.h b/arch/arm/mach-pxa/include/mach/regs-lcd.h
index c689c4e..7439bfb 100644
--- a/arch/arm/mach-pxa/include/mach/regs-lcd.h
+++ b/arch/arm/mach-pxa/include/mach/regs-lcd.h
@@ -14,10 +14,21 @@
#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 DFBR2 (0x028) /* DMA Channel 2 Frame Branch Register */
+#define DFBR3 (0x02C) /* DMA Channel 3 Frame Branch Register */
+#define DFBR4 (0x030) /* DMA Channel 4 Frame Branch Register */
+#define DFBR5 (0x110) /* DMA Channel 5 Frame Branch Register */
+#define DFBR6 (0x114) /* DMA Channel 6 Frame Branch Register */
+#define LCSR1 (0x034) /* LCD Controller Status Register 1 */
#define LCSR (0x038) /* LCD Controller Status Register */
#define LIIDR (0x03C) /* LCD Controller Interrupt ID Register */
#define TMEDRGBR (0x040) /* TMED RGB Seed Register */
#define TMEDCR (0x044) /* TMED Control Register */
+#define OVL1C1 (0x050) /* Overlay 1 Control Register 1 */
+#define OVL1C2 (0x060) /* Overlay 1 Control Register 2 */
+#define OVL2C1 (0x070) /* Overlay 2 Control Register 1 */
+#define OVL2C2 (0x080) /* Overlay 2 Control Register 2 */
+#define CCR (0x090) /* Cursor Control Register */

#define CMDCR (0x100) /* Command Control Register */
#define PRSR (0x104) /* Panel Read Status Register */
@@ -52,6 +63,21 @@
#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 FDADR2 (0x220) /* DMA Channel 2 Frame Descriptor Address Register */
+#define FSADR2 (0x224) /* DMA Channel 2 Frame Source Address Register */
+#define FIDR2 (0x228) /* DMA Channel 2 Frame ID Register */
+#define FDADR3 (0x230) /* DMA Channel 3 Frame Descriptor Address Register */
+#define FSADR3 (0x234) /* DMA Channel 3 Frame Source Address Register */
+#define FIDR3 (0x238) /* DMA Channel 3 Frame ID Register */
+#define LDCMD3 (0x23C) /* DMA Channel 3 Command Register */
+#define FDADR4 (0x240) /* DMA Channel 4 Frame Descriptor Address Register */
+#define FSADR4 (0x244) /* DMA Channel 4 Frame Source Address Register */
+#define FIDR4 (0x248) /* DMA Channel 4 Frame ID Register */
+#define LDCMD4 (0x24C) /* DMA Channel 4 Command Register */
+#define FDADR5 (0x250) /* DMA Channel 5 Frame Descriptor Address Register */
+#define FSADR5 (0x254) /* DMA Channel 5 Frame Source Address Register */
+#define FIDR5 (0x258) /* DMA Channel 5 Frame ID Register */
+#define LDCMD5 (0x25C) /* DMA Channel 5 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 */
@@ -143,6 +169,10 @@
#define LCCR5_EOFM(x) (1 << ((x) + 7)) /* end of frame mask */
#define LCCR5_SOFM(x) (1 << ((x) + 0)) /* start of frame mask */

+#define OVL1C1_O1EN (1 << 31) /* Enable bit for Overlay 1 */
+#define OVL2C1_O2EN (1 << 31) /* Enable bit for Overlay 2 */
+#define CCR_CEN (1 << 31) /* Enable bit for Cursor */
+
#define LCSR_LDD (1 << 0) /* LCD Disable Done */
#define LCSR_SOF (1 << 1) /* Start of frame */
#define LCSR_BER (1 << 2) /* Bus error */
@@ -159,6 +189,15 @@

#define LDCMD_PAL (1 << 26) /* instructs DMA to load palette buffer */

+/* Overlay1 & Overlay2 & Hardware Cursor */
+#define LCSR1_SOF(x) (1 << ((x) + 0)) /* start of frame */
+#define LCSR1_EOF(x) (1 << ((x) + 7)) /* end of frame */
+#define LCSR1_BS(x) (1 << ((x) + 15)) /* branch status */
+#define LCSR1_IU(x) (1 << ((x) + 23)) /* input FIFO underrun */
+
+#define LDCMD_SOFINT (1 << 22)
+#define LDCMD_EOFINT (1 << 21)
+
/* smartpanel related */
#define PRSR_DATA(x) ((x) & 0xff) /* Panel Data */
#define PRSR_A0 (1 << 8) /* Read Data Source */
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 70d135e..5d5c8c8 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1802,6 +1802,12 @@ config FB_PXA_SMARTPANEL
default n
depends on FB_PXA

+config FB_PXA_OVERLAY
+ bool "PXA LCD overlay support"
+ depends on FB_PXA && PXA27x
+ ---help---
+ Frame buffer overlay driver for PXA27x
+
config FB_PXA_PARAMETERS
bool "PXA LCD command line parameters"
default n
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index a6b5529..4968776 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -97,6 +97,7 @@ obj-$(CONFIG_FB_GBE) += gbefb.o
obj-$(CONFIG_FB_CIRRUS) += cirrusfb.o
obj-$(CONFIG_FB_ASILIANT) += asiliantfb.o
obj-$(CONFIG_FB_PXA) += pxafb.o
+obj-$(CONFIG_FB_PXA_OVERLAY) += pxafb_overlay.o
obj-$(CONFIG_FB_W100) += w100fb.o
obj-$(CONFIG_FB_AU1100) += au1100fb.o
obj-$(CONFIG_FB_AU1200) += au1200fb.o
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 9720449..c17a6f3 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -74,19 +74,6 @@ 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);
-
-static inline unsigned long
-lcd_readl(struct pxafb_info *fbi, unsigned int off)
-{
- return __raw_readl(fbi->mmio_base + off);
-}
-
-static inline void
-lcd_writel(struct pxafb_info *fbi, unsigned int off, unsigned long val)
-{
- __raw_writel(val, fbi->mmio_base + off);
-}

static inline void pxafb_schedule_work(struct pxafb_info *fbi, u_int state)
{
@@ -488,7 +475,7 @@ static int pxafb_blank(int blank, struct fb_info *info)
for (i = 0; i < fbi->palette_size; i++)
pxafb_setpalettereg(i, 0, 0, 0, 0, info);

- pxafb_schedule_work(fbi, C_DISABLE);
+ pxafb_schedule_work(fbi, C_BLANK);
/* TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); */
break;

@@ -497,7 +484,7 @@ static int pxafb_blank(int blank, struct fb_info *info)
if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR ||
fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
fb_set_cmap(&fbi->fb.cmap, info);
- pxafb_schedule_work(fbi, C_ENABLE);
+ pxafb_schedule_work(fbi, C_UNBLANK);
}
return 0;
}
@@ -928,6 +915,9 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var,

fbi->reg_lccr0 = fbi->lccr0 |
(LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM |
+#ifdef CONFIG_FB_PXA_OVERLAY
+ LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM |
+#endif
LCCR0_QDM | LCCR0_BM | LCCR0_OUM);

fbi->reg_lccr3 |= pxafb_bpp_to_lccr3(var);
@@ -936,7 +926,8 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var,

if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) {
nbytes = nbytes / 2;
- setup_frame_dma(fbi, DMA_LOWER, PAL_NONE, nbytes, nbytes);
+ setup_frame_dma(fbi, DMA_LOWER, PAL_NONE, nbytes,
+ nbytes | LDCMD_EOFINT);
}

if ((var->bits_per_pixel >= 16) || (fbi->lccr0 & LCCR0_LCDT))
@@ -1116,7 +1107,7 @@ static irqreturn_t pxafb_handle_irq(int irq, void *dev_id)
* sleep when disabling the LCD controller, or if we get two contending
* processes trying to alter state.
*/
-static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
+void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
{
u_int old_state;

@@ -1139,6 +1130,8 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
if (old_state != C_DISABLE && old_state != C_DISABLE_PM) {
fbi->state = state;
/* TODO __pxafb_lcd_power(fbi, 0); */
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_DISABLE);
pxafb_disable_controller(fbi);
}
break;
@@ -1152,6 +1145,8 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
fbi->state = state;
__pxafb_backlight_power(fbi, 0);
__pxafb_lcd_power(fbi, 0);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_DISABLE);
if (old_state != C_DISABLE_CLKCHANGE)
pxafb_disable_controller(fbi);
}
@@ -1166,6 +1161,8 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
fbi->state = C_ENABLE;
pxafb_enable_controller(fbi);
/* TODO __pxafb_lcd_power(fbi, 1); */
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_ENABLE);
}
break;

@@ -1177,9 +1174,13 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
*/
if (old_state == C_ENABLE) {
__pxafb_lcd_power(fbi, 0);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_DISABLE);
pxafb_disable_controller(fbi);
pxafb_setup_gpio(fbi);
pxafb_enable_controller(fbi);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_ENABLE);
__pxafb_lcd_power(fbi, 1);
}
break;
@@ -1205,8 +1206,42 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
pxafb_enable_controller(fbi);
__pxafb_lcd_power(fbi, 1);
__pxafb_backlight_power(fbi, 1);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_ENABLE);
}
break;
+
+ case C_BLANK:
+ /*
+ * Disable controller, blank overlays if exist.
+ */
+ if ((old_state != C_DISABLE) && (old_state != C_BLANK)) {
+ fbi->state = state;
+ __pxafb_backlight_power(fbi, 0);
+ __pxafb_lcd_power(fbi, 0);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_BLANK);
+ if (old_state != C_DISABLE_CLKCHANGE)
+ pxafb_disable_controller(fbi);
+ }
+ break;
+
+ case C_UNBLANK:
+ /*
+ * Power up the LCD screen, enable controller, and
+ * turn on the backlight, unblank overlays if exist.
+ */
+ if ((old_state != C_ENABLE) && (old_state != C_UNBLANK)) {
+ fbi->state = C_UNBLANK;
+ pxafb_setup_gpio(fbi);
+ pxafb_enable_controller(fbi);
+ __pxafb_lcd_power(fbi, 1);
+ __pxafb_backlight_power(fbi, 1);
+ if (fbi->set_overlay_ctrlr_state)
+ fbi->set_overlay_ctrlr_state(fbi, C_UNBLANK);
+ }
+ break;
+
}
mutex_unlock(&fbi->ctrlr_lock);
}
@@ -1362,6 +1397,8 @@ static void pxafb_decode_mode_info(struct pxafb_info *fbi,
if (smemlen > fbi->fb.fix.smem_len)
fbi->fb.fix.smem_len = smemlen;
}
+
+ fbi->set_overlay_ctrlr_state = NULL;
}

static void pxafb_decode_mach_info(struct pxafb_info *fbi,
@@ -1839,6 +1876,10 @@ static int __devinit pxafb_probe(struct platform_device *dev)
CPUFREQ_POLICY_NOTIFIER);
#endif

+#ifdef CONFIG_FB_PXA_OVERLAY
+ pxafb_overlay_probe(&dev->dev);
+#endif
+
/*
* Ok, now enable the LCD controller
*/
diff --git a/drivers/video/pxafb.h b/drivers/video/pxafb.h
index 31541b8..16b12f4 100644
--- a/drivers/video/pxafb.h
+++ b/drivers/video/pxafb.h
@@ -61,6 +61,56 @@ struct pxafb_dma_buff {
struct pxafb_dma_descriptor dma_desc[DMA_MAX];
};

+#ifdef CONFIG_FB_PXA_OVERLAY
+struct overlayfb_info
+{
+ struct fb_info fb;
+
+ struct fb_var_screeninfo old_var;
+
+ atomic_t refcount;
+
+ u_char * map_cpu;
+ u_char * screen_cpu;
+ u_int * palette_cpu;
+ unsigned long map_size;
+ unsigned long palette_size;
+ ssize_t video_offset;
+
+ dma_addr_t screen_dma;
+ dma_addr_t map_dma;
+ dma_addr_t palette_dma;
+
+ volatile u_char state;
+
+ /* Overlay specific info */
+ unsigned long xpos; /* screen position (x, y) */
+ unsigned long ypos;
+ unsigned long format;
+
+ /* Additional */
+ union {
+ struct pxafb_dma_descriptor *dma0;
+ struct pxafb_dma_descriptor *dma1;
+ struct {
+ struct pxafb_dma_descriptor *dma2;
+ struct pxafb_dma_descriptor *dma3;
+ struct pxafb_dma_descriptor *dma4;
+ };
+ struct {
+ struct pxafb_dma_descriptor *dma5_pal;
+ struct pxafb_dma_descriptor *dma5_frame;
+ };
+ };
+};
+
+#define o1_to_basefb(d) container_of(d, struct pxafb_info, overlay1fb)
+#define o2_to_basefb(d) container_of(d, struct pxafb_info, overlay2fb)
+#define cu_to_basefb(d) container_of(d, struct pxafb_info, cursorfb)
+
+extern void pxafb_overlay_probe(struct device *dev);
+#endif
+
struct pxafb_info {
struct fb_info fb;
struct device *dev;
@@ -120,6 +170,13 @@ struct pxafb_info {
struct task_struct *smart_thread;
#endif

+#ifdef CONFIG_FB_PXA_OVERLAY
+ struct overlayfb_info overlay1fb;
+ struct overlayfb_info overlay2fb;
+ struct overlayfb_info cursorfb;
+#endif
+ void (*set_overlay_ctrlr_state)(struct pxafb_info *, u_int);
+
#ifdef CONFIG_CPU_FREQ
struct notifier_block freq_transition;
struct notifier_block freq_policy;
@@ -139,6 +196,11 @@ struct pxafb_info {
#define C_DISABLE_PM (5)
#define C_ENABLE_PM (6)
#define C_STARTUP (7)
+#define C_BLANK (8)
+#define C_UNBLANK (9)
+
+extern void set_ctrlr_state(struct pxafb_info *fbi, u_int state);
+

#define PXA_NAME "PXA"

@@ -148,4 +210,16 @@ struct pxafb_info {
#define MIN_XRES 64
#define MIN_YRES 64

+static inline unsigned long
+lcd_readl(struct pxafb_info *fbi, unsigned int off)
+{
+ return __raw_readl(fbi->mmio_base + off);
+}
+
+static inline void
+lcd_writel(struct pxafb_info *fbi, unsigned int off, unsigned long val)
+{
+ __raw_writel(val, fbi->mmio_base + off);
+}
+
#endif /* __PXAFB_H__ */
diff --git a/drivers/video/pxafb_overlay.c b/drivers/video/pxafb_overlay.c
new file mode 100644
index 0000000..25935b5
--- /dev/null
+++ b/drivers/video/pxafb_overlay.c
@@ -0,0 +1,1476 @@
+/*
+ * linux/drivers/video/pxafb_overlay.c
+ *
+ * Copyright (c) 2004, Intel Corporation
+ *
+ * Code Status:
+ * 2008/07/21: Rodolfo Giometti <giometti@linux.it>
+ * - Ported to 2.6.26 kernel
+ * 2004/10/28: <yan.yin@intel.com>
+ * - Ported to 2.6 kernel
+ * - Made overlay driver a loadable module
+ * - Merged overlay optimized patch
+ * 2004/03/10: <stanley.cai@intel.com>
+ * - Fixed Bugs
+ * - Added workaround for overlay1&2
+ * 2003/08/27: <yu.tang@intel.com>
+ * - Added Overlay 1 & Overlay2 & Hardware Cursor support
+ *
+ *
+ * This software program is licensed subject to the GNU Lesser General
+ * Public License (LGPL). Version 2.1, February 1999, available at
+ * http://www.gnu.org/copyleft/lesser.html
+ *
+ * Intel PXA27x LCD Controller Frame Buffer Overlay Driver
+ *
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/bitfield.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/pxa-regs.h>
+
+#include "pxafb.h"
+
+/* LCD enhancement : Overlay 1 & 2 & Hardware Cursor */
+
+/*
+ * LCD enhancement : Overlay 1
+ *
+ * Features:
+ * - support 16bpp (No palette)
+ */
+
+static int overlay1fb_enable(struct fb_info *info);
+static int overlay2fb_enable(struct fb_info *info);
+static int cursorfb_enable(struct fb_info *info);
+
+static int overlay1fb_disable(struct fb_info *info);
+static int overlay2fb_disable(struct fb_info *info);
+static int cursorfb_disable(struct fb_info *info);
+
+static int overlay1fb_blank(int blank, struct fb_info *info);
+static int overlay2fb_blank(int blank, struct fb_info *info);
+static int cursorfb_blank(int blank, struct fb_info *info);
+
+static struct pxafb_rgb def_rgb_18 = {
+ .red = { offset: 12, length: 6, },
+ .green = { offset: 6, length: 6, },
+ .blue = { offset: 0, length: 6, },
+ .transp = { offset: 0, length: 0, },
+};
+
+static struct pxafb_rgb def_rgbt_16 = {
+ .red = { offset: 10, length: 5, },
+ .green = { offset: 5, length: 5, },
+ .blue = { offset: 0, length: 5, },
+ .transp = { offset: 15, length: 1, },
+};
+
+static struct pxafb_rgb def_rgbt_19 = {
+ .red = { offset: 12, length: 6, },
+ .green = { offset: 6, length: 6, },
+ .blue = { offset: 0, length: 6, },
+ .transp = { offset: 18, length: 1, },
+};
+
+static struct pxafb_rgb def_rgbt_24 = {
+ .red = { offset: 16, length: 7, },
+ .green = { offset: 8, length: 8, },
+ .blue = { offset: 0, length: 8, },
+ .transp = { offset: 0, length: 0, },
+};
+
+static struct pxafb_rgb def_rgbt_25 = {
+ .red = { offset: 16, length: 8, },
+ .green = { offset: 8, length: 8, },
+ .blue = { offset: 0, length: 8, },
+ .transp = { offset: 24, length: 1, },
+};
+
+#define CLEAR_LCD_INTR(reg, intr) do { \
+ reg = (intr); \
+} while (0)
+
+#define WAIT_FOR_LCD_INTR(bfi, reg, intr, timeout) ({ \
+ int __done = 0; \
+ int __t = timeout; \
+ while (__t) { \
+ __done = lcd_readl(bfi, reg) & (intr); \
+ if (__done) \
+ break; \
+ mdelay(10); \
+ __t--; \
+ } \
+ if (!__t) \
+ dev_info(bfi->dev, "wait " #intr " timeount"); \
+ __done; \
+})
+
+#define DISABLE_OVERLAYS(fbi) do { \
+ if (fbi->overlay1fb.state == C_ENABLE) \
+ overlay1fb_disable((struct fb_info *) &fbi->overlay1fb);\
+ if (fbi->overlay2fb.state == C_ENABLE) \
+ overlay2fb_disable((struct fb_info *) &fbi->overlay2fb);\
+ if (fbi->cursorfb.state == C_ENABLE) \
+ cursorfb_disable((struct fb_info *) &fbi->cursorfb); \
+} while (0)
+
+#define ENABLE_OVERLAYS(fbi) do { \
+ if (fbi->overlay1fb.state == C_DISABLE) \
+ overlay1fb_enable((struct fb_info *) &fbi->overlay1fb); \
+ if (fbi->overlay2fb.state == C_DISABLE) \
+ overlay2fb_enable((struct fb_info *) &fbi->overlay2fb); \
+ if (fbi->cursorfb.state == C_DISABLE) \
+ cursorfb_enable((struct fb_info *) &fbi->cursorfb); \
+} while (0)
+
+#define BLANK_OVERLAYS(fbi) do { \
+ if (fbi->overlay1fb.state == C_ENABLE) { \
+ overlay1fb_disable((struct fb_info *) &fbi->overlay1fb);\
+ fbi->overlay1fb.state = C_BLANK; \
+ } \
+ if (fbi->overlay2fb.state == C_ENABLE) { \
+ overlay2fb_disable((struct fb_info *) &fbi->overlay2fb);\
+ fbi->overlay2fb.state = C_BLANK; \
+ } \
+ if (fbi->cursorfb.state == C_ENABLE) { \
+ cursorfb_disable((struct fb_info *) &fbi->cursorfb); \
+ fbi->cursorfb.state = C_BLANK; \
+ } \
+} while (0)
+
+#define UNBLANK_OVERLAYS(fbi) do { \
+ if (fbi->overlay1fb.state == C_BLANK) { \
+ overlay1fb_enable((struct fb_info *) &fbi->overlay1fb); \
+ fbi->overlay1fb.state = C_ENABLE; \
+ } \
+ if (fbi->overlay2fb.state == C_BLANK) { \
+ overlay2fb_enable((struct fb_info *) &fbi->overlay2fb); \
+ fbi->overlay2fb.state = C_ENABLE; \
+ } \
+ if (fbi->cursorfb.state == C_BLANK) { \
+ cursorfb_enable((struct fb_info *) &fbi->cursorfb); \
+ fbi->cursorfb.state = C_ENABLE; \
+ } \
+} while (0)
+
+static int overlay1fb_open(struct fb_info *info, int user)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int ret = 0;
+
+ if (!atomic_dec_and_test(&fbi->refcount)) {
+ atomic_inc(&fbi->refcount);
+ return -EACCES;
+ }
+
+ /* If basefb is disable, enable fb */
+ if (o1_to_basefb(fbi)->state != C_ENABLE)
+ o1_to_basefb(fbi)->fb.fbops->fb_blank(VESA_NO_BLANKING,
+ (struct fb_info *) o1_to_basefb(fbi));
+
+ /* Initialize the variables in overlay1 framebuffer */
+ fbi->fb.var.xres = fbi->fb.var.yres = 0;
+ fbi->fb.var.bits_per_pixel = 0;
+
+ return ret;
+}
+
+static int overlay1fb_release(struct fb_info *info, int user)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ /* Disable overlay when released */
+ overlay1fb_blank(1, info);
+
+ atomic_inc(&fbi->refcount);
+
+ return 0;
+}
+
+static int overlay1fb_map_video_memory(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ if (fbi->map_cpu)
+ dma_free_writecombine(o1_to_basefb(fbi)->dev, fbi->map_size,
+ (void *) fbi->map_cpu, fbi->map_dma);
+ fbi->video_offset = PAGE_ALIGN(sizeof(struct pxafb_dma_descriptor));
+ fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + fbi->video_offset);
+ fbi->map_cpu = dma_alloc_writecombine(o1_to_basefb(fbi)->dev,
+ fbi->map_size, &fbi->map_dma,
+ GFP_KERNEL);
+ if (!fbi->map_cpu)
+ return -ENOMEM;
+
+ /* Prevent initial garbage on screen */
+ memset(fbi->map_cpu, 0, fbi->map_size);
+ fbi->fb.screen_base = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_cpu = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_dma = fbi->map_dma + fbi->video_offset;
+
+ fbi->fb.fix.smem_start = fbi->screen_dma;
+
+ /* Setup dma descriptor */
+ fbi->dma1 = (struct pxafb_dma_descriptor *)
+ (fbi->screen_cpu - sizeof(struct pxafb_dma_descriptor));
+
+ fbi->dma1->fdadr = (fbi->screen_dma -
+ sizeof(struct pxafb_dma_descriptor));
+ fbi->dma1->fsadr = fbi->screen_dma;
+ fbi->dma1->fidr = 0;
+ fbi->dma1->ldcmd = fbi->fb.fix.smem_len;
+
+ return 0;
+}
+
+static int overlay1fb_enable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ unsigned long bpp1;
+ unsigned int lccr5;
+
+ if (!fbi->map_cpu)
+ return -EINVAL;
+
+ switch (fbi->fb.var.bits_per_pixel) {
+ case 16:
+ bpp1 = 0x4;
+ break;
+ case 18:
+ bpp1 = 0x6;
+ break;
+ case 19:
+ bpp1 = 0x8;
+ break;
+ case 24:
+ bpp1 = 0x9;
+ break;
+ case 25:
+ bpp1 = 0xa;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Disable branch/start/end of frame interrupt */
+ lccr5 = lcd_readl(o1_to_basefb(fbi), LCCR5);
+ lcd_writel(o1_to_basefb(fbi), LCCR5,
+ lccr5 | LCCR5_IUM(1) | LCCR5_BSM(1)
+ | LCCR5_EOFM(1) | LCCR5_SOFM(1));
+
+ if (fbi->state == C_DISABLE || fbi->state == C_BLANK)
+ lcd_writel(o1_to_basefb(fbi), FDADR1, fbi->dma1->fdadr);
+ else
+ lcd_writel(o1_to_basefb(fbi), DFBR1, fbi->dma1->fdadr | 0x1);
+
+ /* Enable overlay 1 window */
+ lcd_writel(o1_to_basefb(fbi), OVL1C2,
+ (fbi->ypos << 10) | fbi->xpos);;
+ lcd_writel(o1_to_basefb(fbi), OVL1C1,
+ OVL1C1_O1EN | (bpp1 << 20) |
+ ((fbi->fb.var.yres-1)<<10) |
+ (fbi->fb.var.xres-1));
+
+ fbi->state = C_ENABLE;
+
+ return 0;
+}
+
+static int overlay1fb_disable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int done;
+ unsigned int ovl1c1;
+
+ if ((fbi->state == C_DISABLE) || (fbi->state == C_BLANK))
+ return 0;
+
+ fbi->state = C_DISABLE;
+
+ /* Clear O1EN */
+ ovl1c1 = lcd_readl(o1_to_basefb(fbi), OVL1C1);
+ lcd_writel(o1_to_basefb(fbi), OVL1C1, ovl1c1 & ~OVL1C1_O1EN);
+
+ lcd_writel(o1_to_basefb(fbi), LCSR1, LCSR1_BS(1));
+ lcd_writel(o1_to_basefb(fbi), DFBR1, 0x3);
+ done = WAIT_FOR_LCD_INTR(o1_to_basefb(fbi), LCSR1, LCSR1_BS(1), 100);
+
+ if (!done) {
+ dev_info(o1_to_basefb(fbi)->dev, "%s: timeout\n", __func__);
+ return -1;
+ }
+ return 0;
+}
+
+static int overlay1fb_blank(int blank, struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int err = 0;
+
+ switch (blank) {
+ case 0:
+ err = overlay1fb_enable(info);
+ if (err) {
+ fbi->state = C_DISABLE;
+ set_ctrlr_state(o1_to_basefb(fbi), C_REENABLE);
+ }
+ break;
+ case 1:
+ err = overlay1fb_disable(info);
+ if (err) {
+ fbi->state = C_DISABLE;
+ set_ctrlr_state(o1_to_basefb(fbi), C_REENABLE);
+ }
+ break;
+ }
+
+ return err;
+}
+
+static int overlay1fb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int xpos, ypos;
+
+ /* Must in base frame */
+ xpos = var->nonstd & 0x3ff;
+ ypos = (var->nonstd>>10) & 0x3ff;
+
+ if ((xpos + var->xres) > o1_to_basefb(fbi)->fb.var.xres)
+ return -EINVAL;
+
+ if ((ypos + var->yres) > o1_to_basefb(fbi)->fb.var.yres)
+ return -EINVAL;
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ if (var->xres & 0x1) {
+ dev_err(o1_to_basefb(fbi)->dev,
+ "xres should be a multiple of 2 pixels!\n");
+ return -EINVAL;
+ }
+ break;
+ case 18:
+ case 19:
+ if (var->xres & 0x7) {
+ dev_err(o1_to_basefb(fbi)->dev,
+ "xres should be a multiple of 8 pixels!\n");
+ return -EINVAL;
+ }
+ break;
+ }
+
+ fbi->old_var = *var;
+
+ var->activate = FB_ACTIVATE_NOW;
+
+ return 0;
+}
+
+static int overlay1fb_set_par(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ struct fb_var_screeninfo *var = &fbi->fb.var;
+ int nbytes = 0, err = 0, pixels_per_line = 0;
+
+ info->flags &= ~FBINFO_MISC_USEREVENT;
+
+ if (fbi->state == C_BLANK)
+ return 0;
+
+ if (fbi->state == C_DISABLE)
+ goto out1;
+
+ /* Only xpos & ypos change */
+ if ((var->xres == fbi->old_var.xres) &&
+ (var->yres == fbi->old_var.yres) &&
+ (var->bits_per_pixel == fbi->old_var.bits_per_pixel))
+ goto out2;
+
+out1:
+ switch (var->bits_per_pixel) {
+ case 16:
+ /* 2 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x1) & (~0x1);
+ nbytes = 2;
+
+ var->red = def_rgbt_16.red;
+ var->green = def_rgbt_16.green;
+ var->blue = def_rgbt_16.blue;
+ var->transp = def_rgbt_16.transp;
+
+ break;
+ case 18:
+ /* 8 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x7) & (~0x7);
+ nbytes = 3;
+
+ var->red = def_rgb_18.red;
+ var->green = def_rgb_18.green;
+ var->blue = def_rgb_18.blue;
+ var->transp = def_rgb_18.transp;
+
+ break;
+ case 19:
+ /* 8 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x7) & (~0x7);
+ nbytes = 3;
+
+ var->red = def_rgbt_19.red;
+ var->green = def_rgbt_19.green;
+ var->blue = def_rgbt_19.blue;
+ var->transp = def_rgbt_19.transp;
+
+ break;
+ case 24:
+ pixels_per_line = fbi->fb.var.xres;
+ nbytes = 4;
+
+ var->red = def_rgbt_24.red;
+ var->green = def_rgbt_24.green;
+ var->blue = def_rgbt_24.blue;
+ var->transp = def_rgbt_24.transp;
+
+ break;
+ case 25:
+ pixels_per_line = fbi->fb.var.xres;
+ nbytes = 4;
+
+ var->red = def_rgbt_25.red;
+ var->green = def_rgbt_25.green;
+ var->blue = def_rgbt_25.blue;
+ var->transp = def_rgbt_25.transp;
+
+ break;
+ }
+
+ fbi->fb.fix.line_length = nbytes * pixels_per_line;
+ fbi->fb.fix.smem_len = fbi->fb.fix.line_length * fbi->fb.var.yres;
+
+ err = overlay1fb_map_video_memory(info);
+ if (err)
+ return err;
+
+out2:
+ fbi->xpos = var->nonstd & 0x3ff;
+ fbi->ypos = (var->nonstd>>10) & 0x3ff;
+
+ overlay1fb_enable(info);
+
+ return 0;
+}
+
+static int overlay1fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
+
+ if (off < info->fix.smem_len) {
+ vma->vm_pgoff += fbi->video_offset / PAGE_SIZE;
+ return dma_mmap_writecombine(o1_to_basefb(fbi)->dev, vma,
+ fbi->map_cpu, fbi->map_dma,
+ fbi->map_size);
+ }
+ return -EINVAL;
+}
+
+static struct fb_ops overlay1fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = overlay1fb_open,
+ .fb_release = overlay1fb_release,
+ .fb_check_var = overlay1fb_check_var,
+ .fb_set_par = overlay1fb_set_par,
+ .fb_blank = overlay1fb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_mmap = overlay1fb_mmap,
+};
+
+/*
+ * LCD enhancement : Overlay 2
+ *
+ * Features:
+ * - support planar YCbCr420/YCbCr422/YCbCr444;
+ */
+static int overlay2fb_open(struct fb_info *info, int user)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ if (!atomic_dec_and_test(&fbi->refcount)) {
+ atomic_inc(&fbi->refcount);
+ return -EACCES;
+ }
+
+ /* If basefb is disable, enable fb */
+ if (o2_to_basefb(fbi)->state != C_ENABLE)
+ o2_to_basefb(fbi)->fb.fbops->fb_blank(VESA_NO_BLANKING,
+ (struct fb_info *) o2_to_basefb(fbi));
+
+ fbi->fb.var.xres = fbi->fb.var.yres = 0;
+
+ return 0;
+}
+
+static int overlay2fb_release(struct fb_info *info, int user)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ /* Disable overlay when released */
+ overlay2fb_blank(1, info);
+
+ atomic_inc(&fbi->refcount);
+
+ return 0;
+}
+
+static int overlay2fb_map_YUV_memory(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned int ylen, cblen, crlen, aylen, acblen, acrlen;
+ unsigned int yoff, cboff, croff;
+ unsigned int xres, yres;
+ unsigned int nbytes;
+
+ ylen = cblen = crlen = aylen = acblen = acrlen = 0;
+ yoff = cboff = croff = 0;
+
+ if (fbi->map_cpu)
+ dma_free_writecombine(o2_to_basefb(fbi)->dev, fbi->map_size,
+ fbi->map_cpu, fbi->map_dma);
+
+ yres = fbi->fb.var.yres;
+
+ switch (fbi->format) {
+ case 0x4: /* YCbCr 4:2:0 planar */
+ dev_dbg(o2_to_basefb(fbi)->dev, "420 planar\n");
+ /* 16 pixels per line */
+ xres = (fbi->fb.var.xres + 0xf) & (~0xf);
+ fbi->fb.fix.line_length = xres;
+
+ nbytes = xres * yres;
+ ylen = nbytes;
+ cblen = crlen = (nbytes/4);
+
+ break;
+ case 0x3: /* YCbCr 4:2:2 planar */
+ /* 8 pixles per line */
+ dev_dbg(o2_to_basefb(fbi)->dev, "422 planar\n");
+ xres = (fbi->fb.var.xres + 0x7) & (~0x7);
+ fbi->fb.fix.line_length = xres;
+
+ nbytes = xres * yres;
+ ylen = nbytes;
+ cblen = crlen = (nbytes/2);
+
+ break;
+ case 0x2: /* YCbCr 4:4:4 planar */
+ /* 4 pixels per line */
+ dev_dbg(o2_to_basefb(fbi)->dev, "444 planar\n");
+ xres = (fbi->fb.var.xres + 0x3) & (~0x3);
+ fbi->fb.fix.line_length = xres;
+
+ nbytes = xres * yres;
+ ylen = cblen = crlen = nbytes;
+ break;
+ }
+
+ /* 16-bytes alignment for DMA */
+ aylen = (ylen + 0xf) & (~0xf);
+ acblen = (cblen + 0xf) & (~0xf);
+ acrlen = (crlen + 0xf) & (~0xf);
+
+ fbi->fb.fix.smem_len = aylen + acblen + acrlen;
+
+ /* Alloc memory */
+
+ fbi->video_offset = PAGE_ALIGN(sizeof(struct pxafb_dma_descriptor));
+ fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + fbi->video_offset);
+ fbi->map_cpu = dma_alloc_writecombine(o2_to_basefb(fbi)->dev,
+ fbi->map_size, &fbi->map_dma,
+ GFP_KERNEL);
+ if (!fbi->map_cpu)
+ return -ENOMEM;
+
+ /* Prevent initial garbage on screen */
+ memset(fbi->map_cpu, 0, fbi->map_size);
+ fbi->fb.screen_base = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_cpu = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_dma = fbi->map_dma + fbi->video_offset;
+
+ fbi->fb.fix.smem_start = fbi->screen_dma;
+
+ /* Setup dma for Planar format */
+ fbi->dma2 = (struct pxafb_dma_descriptor *)
+ (fbi->screen_cpu - sizeof(struct pxafb_dma_descriptor));
+ fbi->dma3 = fbi->dma2 - 1;
+ fbi->dma4 = fbi->dma3 - 1;
+
+ /* Offset */
+ yoff = 0;
+ cboff = aylen;
+ croff = cboff + acblen;
+
+ /* Y vector */
+ fbi->dma2->fdadr = (fbi->screen_dma -
+ sizeof(struct pxafb_dma_descriptor));
+ fbi->dma2->fsadr = fbi->screen_dma + yoff;
+ fbi->dma2->fidr = 0;
+ fbi->dma2->ldcmd = ylen;
+
+ /* Cb vector */
+ fbi->dma3->fdadr = (fbi->dma2->fdadr -
+ sizeof(struct pxafb_dma_descriptor));
+ fbi->dma3->fsadr = fbi->screen_dma + cboff;
+ fbi->dma3->fidr = 0;
+ fbi->dma3->ldcmd = cblen;
+
+ /* Cr vector */
+
+ fbi->dma4->fdadr = (fbi->dma3->fdadr -
+ sizeof(struct pxafb_dma_descriptor));
+ fbi->dma4->fsadr = fbi->screen_dma + croff;
+ fbi->dma4->fidr = 0;
+ fbi->dma4->ldcmd = crlen;
+
+ /* Adjust for user */
+ fbi->fb.var.red.length = ylen;
+ fbi->fb.var.red.offset = yoff;
+ fbi->fb.var.green.length = cblen;
+ fbi->fb.var.green.offset = cboff;
+ fbi->fb.var.blue.length = crlen;
+ fbi->fb.var.blue.offset = croff;
+
+ return 0;
+};
+
+static int overlay2fb_map_RGB_memory(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ struct fb_var_screeninfo *var = &fbi->fb.var;
+ int pixels_per_line = 0 , nbytes = 0;
+
+ if (fbi->map_cpu)
+ dma_free_writecombine(o2_to_basefb(fbi)->dev, fbi->map_size,
+ fbi->map_cpu, fbi->map_dma);
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ /* 2 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x1) & (~0x1);
+ nbytes = 2;
+
+ var->red = def_rgbt_16.red;
+ var->green = def_rgbt_16.green;
+ var->blue = def_rgbt_16.blue;
+ var->transp = def_rgbt_16.transp;
+ break;
+
+ case 18:
+ /* 8 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x7) & (~0x7);
+ nbytes = 3;
+
+ var->red = def_rgb_18.red;
+ var->green = def_rgb_18.green;
+ var->blue = def_rgb_18.blue;
+ var->transp = def_rgb_18.transp;
+
+ break;
+ case 19:
+ /* 8 pixels per line */
+ pixels_per_line = (fbi->fb.var.xres + 0x7) & (~0x7);
+ nbytes = 3;
+
+ var->red = def_rgbt_19.red;
+ var->green = def_rgbt_19.green;
+ var->blue = def_rgbt_19.blue;
+ var->transp = def_rgbt_19.transp;
+
+ break;
+ case 24:
+ pixels_per_line = fbi->fb.var.xres;
+ nbytes = 4;
+
+ var->red = def_rgbt_24.red;
+ var->green = def_rgbt_24.green;
+ var->blue = def_rgbt_24.blue;
+ var->transp = def_rgbt_24.transp;
+
+ break;
+
+ case 25:
+ pixels_per_line = fbi->fb.var.xres;
+ nbytes = 4;
+
+ var->red = def_rgbt_25.red;
+ var->green = def_rgbt_25.green;
+ var->blue = def_rgbt_25.blue;
+ var->transp = def_rgbt_25.transp;
+
+ break;
+ }
+
+ fbi->fb.fix.line_length = nbytes * pixels_per_line ;
+ fbi->fb.fix.smem_len = fbi->fb.fix.line_length * fbi->fb.var.yres ;
+
+ fbi->video_offset = PAGE_ALIGN(sizeof(struct pxafb_dma_descriptor));
+ fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + fbi->video_offset);
+ fbi->map_cpu = dma_alloc_writecombine(o2_to_basefb(fbi)->dev,
+ fbi->map_size, &fbi->map_dma,
+ GFP_KERNEL);
+ if (!fbi->map_cpu)
+ return -ENOMEM;
+
+ /* Prevent initial garbage on screen */
+ memset(fbi->map_cpu, 0, fbi->map_size);
+ fbi->fb.screen_base = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_cpu = fbi->map_cpu + fbi->video_offset;
+ fbi->screen_dma = fbi->map_dma + fbi->video_offset;
+
+ fbi->fb.fix.smem_start = fbi->screen_dma;
+
+ /* Setup dma descriptor */
+ fbi->dma2 = (struct pxafb_dma_descriptor *)
+ (fbi->screen_cpu - sizeof(struct pxafb_dma_descriptor));
+
+ fbi->dma2->fdadr = (fbi->screen_dma -
+ sizeof(struct pxafb_dma_descriptor));
+ fbi->dma2->fsadr = fbi->screen_dma;
+ fbi->dma2->fidr = 0;
+ fbi->dma2->ldcmd = fbi->fb.fix.smem_len;
+
+ return 0;
+}
+
+static int overlay2fb_enable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned long bpp2;
+ unsigned int xres, yres;
+ unsigned int lccr5;
+
+ if (!fbi->map_cpu)
+ return -EINVAL;
+
+ switch (fbi->fb.var.bits_per_pixel) {
+ case 16:
+ bpp2 = 0x4;
+ break;
+ case 18:
+ bpp2 = 0x6;
+ break;
+ case 19:
+ bpp2 = 0x8;
+ break;
+ case 24:
+ bpp2 = 0x9;
+ break;
+ case 25:
+ bpp2 = 0xa;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Disable branch/start/end of frame interrupt */
+ lccr5 = lcd_readl(o2_to_basefb(fbi), LCCR5);
+ lcd_writel(o2_to_basefb(fbi), LCCR5, lccr5
+ | LCCR5_IUM(4) | LCCR5_IUM(3) | LCCR5_IUM(2)
+ | LCCR5_BSM(4) | LCCR5_BSM(3) | LCCR5_BSM(2)
+ | LCCR5_EOFM(4) | LCCR5_EOFM(3) | LCCR5_EOFM(2)
+ | LCCR5_SOFM(4) | LCCR5_SOFM(3) | LCCR5_SOFM(2));
+
+ if (fbi->format == 0) {
+ /* Overlay2 RGB resolution, RGB and YUV have different
+ * xres value
+ */
+ xres = fbi->fb.var.xres;
+ yres = fbi->fb.var.yres;
+
+ lcd_writel(o2_to_basefb(fbi), OVL2C2,
+ (fbi->format << 20) | (fbi->ypos << 10) | fbi->xpos);
+ lcd_writel(o2_to_basefb(fbi), OVL2C1,
+ OVL2C1_O2EN | (bpp2 << 20) | ((yres-1)<<10) | (xres-1));
+
+ /* Setup RGB DMA */
+ if (fbi->state == C_DISABLE || fbi->state == C_BLANK)
+ lcd_writel(o2_to_basefb(fbi), FDADR2,
+ fbi->dma2->fdadr);
+ else
+ lcd_writel(o2_to_basefb(fbi), DFBR2,
+ fbi->dma2->fdadr | 0x1);
+ } else {
+ /* Overlay2 YUV resolution */
+ xres = fbi->fb.fix.line_length;
+ yres = fbi->fb.var.yres;
+
+ lcd_writel(o2_to_basefb(fbi), OVL2C2,
+ (fbi->format << 20) | (fbi->ypos << 10) | fbi->xpos);
+ lcd_writel(o2_to_basefb(fbi), OVL2C1,
+ OVL2C1_O2EN | (bpp2 << 20) | ((yres-1)<<10) | (xres-1));
+
+ if (fbi->state == C_DISABLE || fbi->state == C_BLANK) {
+ lcd_writel(o2_to_basefb(fbi), FDADR2,
+ fbi->dma2->fdadr);
+ lcd_writel(o2_to_basefb(fbi), FDADR3,
+ fbi->dma3->fdadr);
+ lcd_writel(o2_to_basefb(fbi), FDADR4,
+ fbi->dma4->fdadr);
+ } else {
+ lcd_writel(o2_to_basefb(fbi), DFBR2,
+ fbi->dma2->fdadr | 0x01);
+ lcd_writel(o2_to_basefb(fbi), DFBR3,
+ fbi->dma3->fdadr | 0x01);
+ lcd_writel(o2_to_basefb(fbi), DFBR4,
+ fbi->dma4->fdadr | 0x01);
+ }
+ }
+
+ fbi->state = C_ENABLE;
+ return 0;
+}
+
+static int overlay2fb_disable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned int ovl2c1;
+ int done;
+
+ if (fbi->state == C_DISABLE)
+ return 0;
+ if (fbi->state == C_BLANK) {
+ fbi->state = C_DISABLE;
+ return 0;
+ }
+
+ fbi->state = C_DISABLE;
+
+ /* Clear O2EN */
+ ovl2c1 = lcd_readl(o2_to_basefb(fbi), OVL2C1);
+ lcd_writel(o2_to_basefb(fbi), OVL2C1, ovl2c1 & ~OVL2C1_O2EN);
+
+ /* Make overlay2 can't disable/enable correctly sometimes */
+ lcd_writel(o2_to_basefb(fbi), LCSR1, LCSR1_BS(2));
+
+ if (fbi->format == 0)
+ lcd_writel(o2_to_basefb(fbi), DFBR2, 0x3);
+ else {
+ lcd_writel(o2_to_basefb(fbi), DFBR2, 0x3);
+ lcd_writel(o2_to_basefb(fbi), DFBR3, 0x3);
+ lcd_writel(o2_to_basefb(fbi), DFBR4, 0x3);
+ }
+
+ done = WAIT_FOR_LCD_INTR(o2_to_basefb(fbi), LCSR1, LCSR1_BS(2), 100);
+ if (!done) {
+ dev_info(o2_to_basefb(fbi)->dev, "%s: timeout\n", __func__);
+ return -1;
+ }
+ return 0;
+}
+
+static int overlay2fb_blank(int blank, struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int err = 0;
+
+ switch (blank) {
+ case 0:
+ err = overlay2fb_enable(info);
+ if (err) {
+ fbi->state = C_DISABLE;
+ set_ctrlr_state(o2_to_basefb(fbi), C_REENABLE);
+ }
+ break;
+ case 1:
+ err = overlay2fb_disable(info);
+ if (err) {
+ fbi->state = C_DISABLE;
+ set_ctrlr_state(o2_to_basefb(fbi), C_REENABLE);
+ }
+ break;
+ }
+
+ return err;
+}
+
+
+static int overlay2fb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ int xpos, ypos, xres, yres;
+ int format;
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+
+ xres = yres = 0;
+
+ xpos = (var->nonstd & 0x3ff);
+ ypos = (var->nonstd >> 10) & 0x3ff;
+ format = (var->nonstd >> 20) & 0x7;
+
+
+ /* Palnar YCbCr444, YCbCr422, YCbCr420 */
+ if ((format != 0x4) && (format != 0x3) &&
+ (format != 0x2) && (format != 0x0))
+ return -EINVAL;
+
+ /* Dummy pixels */
+ switch (format) {
+ case 0x0: /* RGB */
+ xres = var->xres;
+ break;
+ case 0x2: /* 444 */
+ xres = (var->xres + 0x3) & ~(0x3);
+ break;
+ case 0x3: /* 422 */
+ xres = (var->xres + 0x7) & ~(0x7);
+ break;
+ case 0x4: /* 420 */
+ xres = (var->xres + 0xf) & ~(0xf);
+ break;
+ }
+ yres = var->yres;
+
+ if ((xpos + xres) > o2_to_basefb(fbi)->fb.var.xres)
+ return -EINVAL;
+
+ if ((ypos + yres) > o2_to_basefb(fbi)->fb.var.yres)
+ return -EINVAL;
+
+ fbi->old_var = *var;
+
+ var->activate = FB_ACTIVATE_NOW;
+
+ return 0;
+
+}
+
+
+/*
+ * overlay2fb_set_var()
+ *
+ * var.nonstd is used as YCbCr format.
+ * var.red/green/blue is used as (Y/Cb/Cr) vector
+ */
+
+static int overlay2fb_set_par(struct fb_info *info)
+{
+ unsigned int xpos, ypos;
+ int format, err;
+
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ struct fb_var_screeninfo *var = &fbi->fb.var;
+
+ info->flags &= ~FBINFO_MISC_USEREVENT;
+
+ if (fbi->state == C_BLANK)
+ return 0;
+
+ if (fbi->state == C_DISABLE)
+ goto out1;
+
+ if ((var->xres == fbi->old_var.xres) &&
+ (var->yres == fbi->old_var.yres) &&
+ (var->bits_per_pixel == fbi->old_var.bits_per_pixel) &&
+ (((var->nonstd>>20) & 0x7) == fbi->format))
+ goto out2;
+
+out1:
+ xpos = var->nonstd & 0x3ff;
+ ypos = (var->nonstd>>10) & 0x3ff;
+ format = (var->nonstd>>20) & 0x7;
+
+
+ fbi->format = format;
+ if (fbi->format == 0)
+ err = overlay2fb_map_RGB_memory(info);
+ else
+ err = overlay2fb_map_YUV_memory(info);
+
+ if (err)
+ return err;
+
+out2:
+ /* Position */
+ fbi->xpos = var->nonstd & 0x3ff;
+ fbi->ypos = (var->nonstd>>10) & 0x3ff;
+
+ overlay2fb_enable(info);
+
+ return 0;
+}
+
+static int overlay2fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
+
+ if (off < info->fix.smem_len) {
+ vma->vm_pgoff += fbi->video_offset / PAGE_SIZE;
+ return dma_mmap_writecombine(o2_to_basefb(fbi)->dev, vma,
+ fbi->map_cpu, fbi->map_dma,
+ fbi->map_size);
+ }
+ return -EINVAL;
+}
+
+static struct fb_ops overlay2fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = overlay2fb_open,
+ .fb_release = overlay2fb_release,
+ .fb_check_var = overlay2fb_check_var,
+ .fb_set_par = overlay2fb_set_par,
+ .fb_blank = overlay2fb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_mmap = overlay2fb_mmap,
+};
+
+/* Hardware cursor */
+
+/* Bulverde Cursor Modes */
+struct cursorfb_mode {
+ int xres;
+ int yres;
+ int bpp;
+};
+
+static struct cursorfb_mode cursorfb_modes[] = {
+ { 32, 32, 2},
+ { 32, 32, 2},
+ { 32, 32, 2},
+ { 64, 64, 2},
+ { 64, 64, 2},
+ { 64, 64, 2},
+ {128, 128, 1},
+ {128, 128, 1}
+};
+
+static int cursorfb_enable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned int ccr, lccr4, lccr5;
+
+ if (!fbi->map_cpu)
+ return -EINVAL;
+
+ ccr = lcd_readl(cu_to_basefb(fbi), CCR);
+ lcd_writel(cu_to_basefb(fbi), CCR, ccr & ~CCR_CEN);
+
+ /* Set palette format
+ *
+ * FIXME: if only cursor uses palette
+ */
+ lccr4 = lcd_readl(cu_to_basefb(fbi), LCCR4);
+ lcd_writel(cu_to_basefb(fbi), LCCR4,
+ (lccr4 & (~(0x3 << 15))) | (0x1 << 15));
+
+ /* Disable branch/start/end of frame interrupt */
+ lccr5 = lcd_readl(cu_to_basefb(fbi), LCCR5);
+ lcd_writel(cu_to_basefb(fbi), LCCR5,
+ lccr5 | LCCR5_IUM(5) | LCCR5_BSM(5)
+ | LCCR5_EOFM(5) | LCCR5_SOFM(5));
+
+ /* Load palette and frame data */
+ if (fbi->state == C_DISABLE) {
+ lcd_writel(cu_to_basefb(fbi), FDADR5,
+ fbi->dma5_pal->fdadr);
+ udelay(1);
+ lcd_writel(cu_to_basefb(fbi), FDADR5,
+ fbi->dma5_frame->fdadr);
+ udelay(1);
+
+ } else {
+ lcd_writel(cu_to_basefb(fbi), DFBR5,
+ fbi->dma5_pal->fdadr | 0x1);
+ udelay(1);
+ lcd_writel(cu_to_basefb(fbi), DFBR5,
+ fbi->dma5_frame->fdadr | 0x1);
+ udelay(1);
+ }
+
+ lcd_writel(cu_to_basefb(fbi), CCR,
+ CCR_CEN | (fbi->ypos << 15) | (fbi->xpos << 5) | (fbi->format));
+
+ fbi->state = C_ENABLE;
+
+ return 0;
+}
+
+static int cursorfb_disable(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ unsigned int ccr;
+ int done, ret = 0;
+
+ fbi->state = C_DISABLE;
+
+ done = WAIT_FOR_LCD_INTR(cu_to_basefb(fbi), LCSR1, LCSR1_BS(5), 100);
+ if (!done)
+ ret = -1;
+
+ ccr = lcd_readl(cu_to_basefb(fbi), CCR);
+ lcd_writel(cu_to_basefb(fbi), CCR, ccr & ~CCR_CEN);
+
+ return ret;
+}
+
+static int cursorfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int trans, struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ u_int val, ret = 1;
+ u_int *pal = fbi->palette_cpu;
+
+ /* 25bit with Transparcy for 16bpp format */
+ if (regno < fbi->palette_size) {
+ val = ((trans << 24) & 0x1000000);
+ val |= ((red << 16) & 0x0ff0000);
+ val |= ((green << 8) & 0x000ff00);
+ val |= ((blue << 0) & 0x00000ff);
+
+ pal[regno] = val;
+ ret = 0;
+ }
+
+ return ret;
+}
+
+int cursorfb_blank(int blank, struct fb_info *info)
+{
+ switch (blank) {
+ case 0:
+ cursorfb_enable(info);
+ break;
+ case 1:
+ cursorfb_disable(info);
+ break;
+ }
+
+ return 0;
+}
+
+static int cursorfb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ int xpos, ypos, xres, yres;
+ int mode;
+ struct cursorfb_mode *cursor;
+
+ mode = var->nonstd & 0x7;
+ xpos = (var->nonstd>>5) & 0x3ff;
+ ypos = (var->nonstd>>15) & 0x3ff;
+
+ if (mode > 7 || mode < 0)
+ return -EINVAL;
+
+ cursor = cursorfb_modes + mode;
+
+ xres = cursor->xres;
+ yres = cursor->yres;
+
+ if ((xpos + xres) > cu_to_basefb(fbi)->fb.var.xres)
+ return -EINVAL;
+
+ if ((ypos + yres) > cu_to_basefb(fbi)->fb.var.yres)
+ return -EINVAL;
+
+ return 0;
+
+}
+
+static int cursorfb_set_par(struct fb_info *info)
+{
+ struct overlayfb_info *fbi = (struct overlayfb_info *) info;
+ struct fb_var_screeninfo *var = &fbi->fb.var;
+ struct cursorfb_mode *cursor;
+ int mode, xpos, ypos;
+ int err;
+
+ info->flags &= ~FBINFO_MISC_USEREVENT;
+
+ mode = var->nonstd & 0x7;
+ xpos = (var->nonstd>>5) & 0x3ff;
+ ypos = (var->nonstd>>15) & 0x3ff;
+
+ if (mode != fbi->format) {
+ cursor = cursorfb_modes + mode;
+
+ /* Update "var" info */
+ fbi->fb.var.xres = cursor->xres;
+ fbi->fb.var.yres = cursor->yres;
+ fbi->fb.var.bits_per_pixel = cursor->bpp;
+
+ /* Alloc video memory
+ *
+ * 4k is engouh for 128x128x1 cursor,
+ * - 2k for cursor pixels,
+ * - 2k for palette data, plus 2 dma descriptor
+ */
+ if (!fbi->map_cpu) {
+ fbi->map_size = PAGE_SIZE;
+ fbi->map_cpu = dma_alloc_writecombine(NULL,
+ fbi->map_size, &fbi->map_dma,
+ GFP_KERNEL);
+ if (!fbi->map_cpu)
+ return -ENOMEM;
+ }
+
+ cursor = cursorfb_modes + mode;
+
+ /* Update overlay & fix "info" */
+ fbi->screen_cpu = fbi->map_cpu;
+ fbi->palette_cpu = (u_int *)
+ fbi->map_cpu + (PAGE_SIZE/2);
+ fbi->screen_dma = fbi->map_dma;
+ fbi->palette_dma = fbi->map_dma + (PAGE_SIZE/2);
+
+ fbi->format = mode;
+ fbi->palette_size = 1 << cursor->bpp;
+ fbi->fb.fix.smem_start = fbi->screen_dma;
+ fbi->fb.fix.smem_len = cursor->xres * cursor->yres *
+ cursor->bpp / 8;
+ fbi->fb.fix.line_length = cursor->xres * cursor->bpp / 8 ;
+
+ fbi->dma5_pal = (struct pxafb_dma_descriptor *)
+ (fbi->map_cpu + PAGE_SIZE - 16);
+ fbi->dma5_pal->fdadr = fbi->map_dma + PAGE_SIZE - 16;
+ fbi->dma5_pal->fsadr = fbi->palette_dma;
+ fbi->dma5_pal->fidr = 0;
+ fbi->dma5_pal->ldcmd = (fbi->palette_size << 2) | LDCMD_PAL;
+
+ fbi->dma5_frame = (struct pxafb_dma_descriptor *)
+ (fbi->map_cpu + PAGE_SIZE - 32);
+ fbi->dma5_frame->fdadr = fbi->map_dma + PAGE_SIZE - 32;
+ fbi->dma5_frame->fsadr = fbi->screen_dma;
+ fbi->dma5_frame->fidr = 0;
+ fbi->dma5_frame->ldcmd = fbi->fb.fix.smem_len;
+
+ /* Alloc & set default cmap */
+ err = fb_alloc_cmap(&fbi->fb.cmap, fbi->palette_size, 0);
+ if (err)
+ return err;
+ err = fb_set_cmap(&fbi->fb.cmap, info);
+ if (err)
+ return err;
+ }
+
+ /* Update overlay info */
+ if ((xpos != fbi->xpos) || (ypos != fbi->ypos)) {
+ fbi->xpos = xpos;
+ fbi->ypos = ypos;
+ }
+
+ cursorfb_enable(info);
+ set_ctrlr_state(cu_to_basefb(fbi), C_REENABLE);
+
+ return 0;
+}
+
+static struct fb_ops cursorfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = cursorfb_check_var,
+ .fb_set_par = cursorfb_set_par,
+ .fb_blank = cursorfb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_setcolreg = cursorfb_setcolreg,
+};
+
+static void __init overlay1fb_init_fbinfo(struct overlayfb_info *fbi)
+{
+ memset(fbi, 0, sizeof(struct overlayfb_info));
+
+ atomic_set(&fbi->refcount, 1);
+ strcpy(fbi->fb.fix.id, "overlay1");
+
+ fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fb.fix.type_aux = 0;
+ fbi->fb.fix.xpanstep = 0;
+ fbi->fb.fix.ypanstep = 0;
+ fbi->fb.fix.ywrapstep = 0;
+ fbi->fb.fix.accel = FB_ACCEL_NONE;
+
+ fbi->fb.var.nonstd = 0;
+ fbi->fb.var.activate = FB_ACTIVATE_NOW;
+ fbi->fb.var.height = -1;
+ fbi->fb.var.width = -1;
+ fbi->fb.var.accel_flags = 0;
+ fbi->fb.var.vmode = FB_VMODE_NONINTERLACED;
+
+ fbi->fb.fbops = &overlay1fb_ops;
+ fbi->fb.flags = FBINFO_FLAG_DEFAULT;
+ fbi->fb.node = -1;
+ fbi->fb.pseudo_palette = NULL;
+
+ fbi->xpos = 0;
+ fbi->ypos = 0;
+ fbi->format = -1;
+ fbi->state = C_DISABLE;
+}
+
+static void __init overlay2fb_init_fbinfo(struct overlayfb_info *fbi)
+{
+ memset(fbi, 0, sizeof(struct overlayfb_info));
+
+ atomic_set(&fbi->refcount, 1);
+ strcpy(fbi->fb.fix.id, "overlay2");
+
+ fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fb.fix.type_aux = 0;
+ fbi->fb.fix.xpanstep = 0;
+ fbi->fb.fix.ypanstep = 0;
+ fbi->fb.fix.ywrapstep = 0;
+ fbi->fb.fix.accel = FB_ACCEL_NONE;
+
+ fbi->fb.var.nonstd = 0;
+ fbi->fb.var.activate = FB_ACTIVATE_NOW;
+ fbi->fb.var.height = -1;
+ fbi->fb.var.width = -1;
+ fbi->fb.var.accel_flags = 0;
+ fbi->fb.var.vmode = FB_VMODE_NONINTERLACED;
+
+ fbi->fb.fbops = &overlay2fb_ops;
+ fbi->fb.flags = FBINFO_FLAG_DEFAULT;
+ fbi->fb.node = -1;
+ fbi->fb.pseudo_palette = NULL;
+
+ fbi->xpos = 0;
+ fbi->ypos = 0;
+ fbi->format = -1;
+ fbi->state = C_DISABLE;
+}
+
+static void __init cursorfb_init_fbinfo(struct overlayfb_info *fbi)
+{
+ memset(fbi, 0, sizeof(struct overlayfb_info));
+
+ atomic_set(&fbi->refcount, 1);
+ strcpy(fbi->fb.fix.id, "cursor");
+
+ fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fb.fix.type_aux = 0;
+ fbi->fb.fix.xpanstep = 0;
+ fbi->fb.fix.ypanstep = 0;
+ fbi->fb.fix.ywrapstep = 0;
+ fbi->fb.fix.accel = FB_ACCEL_NONE;
+
+ fbi->fb.var.nonstd = 0;
+ fbi->fb.var.activate = FB_ACTIVATE_NOW;
+ fbi->fb.var.height = -1;
+ fbi->fb.var.width = -1;
+ fbi->fb.var.accel_flags = 0;
+ fbi->fb.var.vmode = FB_VMODE_NONINTERLACED;
+
+ fbi->fb.fbops = &cursorfb_ops;
+ fbi->fb.flags = FBINFO_FLAG_DEFAULT;
+ fbi->fb.node = -1;
+ fbi->fb.pseudo_palette = NULL;
+
+ fbi->xpos = 0;
+ fbi->ypos = 0;
+ fbi->format = -1;
+ fbi->state = C_DISABLE;
+}
+
+
+void pxa_set_overlay_ctrlr_state(struct pxafb_info *fbi, u_int state)
+{
+ switch (state) {
+ case C_DISABLE:
+ DISABLE_OVERLAYS(fbi);
+ break;
+ case C_ENABLE:
+ ENABLE_OVERLAYS(fbi);
+ break;
+ case C_BLANK:
+ BLANK_OVERLAYS(fbi);
+ break;
+ case C_UNBLANK:
+ UNBLANK_OVERLAYS(fbi);
+ break;
+ }
+}
+
+void __init pxafb_overlay_probe(struct device *dev)
+{
+ struct pxafb_info *fbi;
+ int ret;
+
+ dev_dbg(dev, "pxafb_overlay_probe\n");
+
+ fbi = dev_get_drvdata(dev);
+ if (!fbi) {
+ dev_err(dev, "base framebuffer not initialized, "
+ "failed to load overlay driver!\n");
+ return;
+ }
+
+ /* Overlay 1 windows */
+ overlay1fb_init_fbinfo(&fbi->overlay1fb);
+ ret = register_framebuffer(&fbi->overlay1fb.fb);
+ if (ret < 0) {
+ dev_err(dev, "unable to register overlay 1 windows\n");
+ goto error_o1;
+ }
+
+ /* Overlay 2 window */
+ overlay2fb_init_fbinfo(&fbi->overlay2fb);
+ ret = register_framebuffer(&fbi->overlay2fb.fb);
+ if (ret < 0) {
+ dev_err(dev, "unable to register overlay 2 windows\n");
+ goto error_o2;
+ }
+
+ /* Hardware cursor window */
+ cursorfb_init_fbinfo(&fbi->cursorfb);
+ ret = register_framebuffer(&fbi->cursorfb.fb);
+ if (ret < 0) {
+ dev_err(dev, "unable to register hardware cursor windows\n");
+ goto error_cu;
+ }
+
+ fbi->set_overlay_ctrlr_state = pxa_set_overlay_ctrlr_state;
+
+ dev_info(dev, "PXA overlay driver enabled\n");
+
+ return;
+
+error_cu:
+ unregister_framebuffer(&fbi->overlay2fb.fb);
+error_o2:
+ unregister_framebuffer(&fbi->overlay1fb.fb);
+error_o1:
+ dev_info(dev, "PXA overlay driver failed\n");
+
+ return;
+}
+EXPORT_SYMBOL(pxafb_overlay_probe);
--
1.5.4.3


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