atmel_lcdfb: AT91/AT32 LCD Controller framebuffer driver

Adds a framebuffer driver to ATMEL AT91SAM9x and AT32 aka AVR32 platforms.
Those chips share quite the same IP and this code is suitable for both
architectures.
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/Kconfig

@@ -748,6 +748,22 @@ config FB_S1D13XXX
 	  working with S1D13806). Product specs at
 	  <http://www.erd.epson.com/vdc/html/legacy_13xxx.htm>
 
+config FB_ATMEL
+	tristate "AT91/AT32 LCD Controller support"
+	depends on FB && (ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || AVR32)
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  This enables support for the AT91/AT32 LCD Controller.
+
+config FB_INTSRAM
+	bool "Frame Buffer in internal SRAM"
+	depends on FB_ATMEL && ARCH_AT91SAM9261
+	help
+	  Say Y if you want to map Frame Buffer in internal SRAM. Say N if you want
+	  to let frame buffer in external SDRAM.
+
 config FB_NVIDIA
 	tristate "nVidia Framebuffer Support"
 	depends on FB && PCI

drivers/video/Makefile

@@ -87,6 +87,7 @@ obj-$(CONFIG_FB_G364)             += g364fb.o
 obj-$(CONFIG_FB_SA1100)           += sa1100fb.o
 obj-$(CONFIG_FB_HIT)              += hitfb.o
 obj-$(CONFIG_FB_EPSON1355)	  += epson1355fb.o
+obj-$(CONFIG_FB_ATMEL)		  += atmel_lcdfb.o
 obj-$(CONFIG_FB_PVR2)             += pvr2fb.o
 obj-$(CONFIG_FB_VOODOO1)          += sstfb.o
 obj-$(CONFIG_FB_ARMCLCD)	  += amba-clcd.o

include/video/atmel_lcdc.h

+/*
+ *  Header file for AT91/AT32 LCD Controller
+ *
+ *  Data structure and register user interface
+ *
+ *  Copyright (C) 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ATMEL_LCDC_H__
+#define __ATMEL_LCDC_H__
+
+ /* LCD Controller info data structure */
+struct atmel_lcdfb_info {
+	spinlock_t		lock;
+	struct fb_info		*info;
+	void __iomem		*mmio;
+	unsigned long		irq_base;
+
+	unsigned int		guard_time;
+	struct platform_device	*pdev;
+	struct clk		*bus_clk;
+	struct clk		*lcdc_clk;
+	unsigned int		default_bpp;
+	unsigned int		default_lcdcon2;
+	unsigned int		default_dmacon;
+	void (*atmel_lcdfb_power_control)(int on);
+	struct fb_monspecs	*default_monspecs;
+	u32			pseudo_palette[16];
+};
+
+#define ATMEL_LCDC_DMABADDR1	0x00
+#define ATMEL_LCDC_DMABADDR2	0x04
+#define ATMEL_LCDC_DMAFRMPT1	0x08
+#define ATMEL_LCDC_DMAFRMPT2	0x0c
+#define ATMEL_LCDC_DMAFRMADD1	0x10
+#define ATMEL_LCDC_DMAFRMADD2	0x14
+
+#define ATMEL_LCDC_DMAFRMCFG	0x18
+#define	ATMEL_LCDC_FRSIZE	(0x7fffff <<  0)
+#define	ATMEL_LCDC_BLENGTH_OFFSET	24
+#define	ATMEL_LCDC_BLENGTH	(0x7f     << ATMEL_LCDC_BLENGTH_OFFSET)
+
+#define ATMEL_LCDC_DMACON	0x1c
+#define	ATMEL_LCDC_DMAEN	(0x1 << 0)
+#define	ATMEL_LCDC_DMARST	(0x1 << 1)
+#define	ATMEL_LCDC_DMABUSY	(0x1 << 2)
+#define		ATMEL_LCDC_DMAUPDT	(0x1 << 3)
+#define		ATMEL_LCDC_DMA2DEN	(0x1 << 4)
+
+#define ATMEL_LCDC_DMA2DCFG	0x20
+#define		ATMEL_LCDC_ADDRINC_OFFSET	0
+#define		ATMEL_LCDC_ADDRINC		(0xffff)
+#define		ATMEL_LCDC_PIXELOFF_OFFSET	24
+#define		ATMEL_LCDC_PIXELOFF		(0x1f << 24)
+
+#define ATMEL_LCDC_LCDCON1	0x0800
+#define	ATMEL_LCDC_BYPASS	(1     <<  0)
+#define	ATMEL_LCDC_CLKVAL_OFFSET	12
+#define	ATMEL_LCDC_CLKVAL	(0x1ff << ATMEL_LCDC_CLKVAL_OFFSET)
+#define	ATMEL_LCDC_LINCNT	(0x7ff << 21)
+
+#define ATMEL_LCDC_LCDCON2	0x0804
+#define	ATMEL_LCDC_DISTYPE	(3 << 0)
+#define		ATMEL_LCDC_DISTYPE_STNMONO	(0 << 0)
+#define		ATMEL_LCDC_DISTYPE_STNCOLOR	(1 << 0)
+#define		ATMEL_LCDC_DISTYPE_TFT		(2 << 0)
+#define	ATMEL_LCDC_SCANMOD	(1 << 2)
+#define		ATMEL_LCDC_SCANMOD_SINGLE	(0 << 2)
+#define		ATMEL_LCDC_SCANMOD_DUAL		(1 << 2)
+#define	ATMEL_LCDC_IFWIDTH	(3 << 3)
+#define		ATMEL_LCDC_IFWIDTH_4		(0 << 3)
+#define		ATMEL_LCDC_IFWIDTH_8		(1 << 3)
+#define		ATMEL_LCDC_IFWIDTH_16		(2 << 3)
+#define	ATMEL_LCDC_PIXELSIZE	(7 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_1		(0 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_2		(1 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_4		(2 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_8		(3 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_16		(4 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_24		(5 << 5)
+#define		ATMEL_LCDC_PIXELSIZE_32		(6 << 5)
+#define	ATMEL_LCDC_INVVD	(1 << 8)
+#define		ATMEL_LCDC_INVVD_NORMAL		(0 << 8)
+#define		ATMEL_LCDC_INVVD_INVERTED	(1 << 8)
+#define	ATMEL_LCDC_INVFRAME	(1 << 9 )
+#define		ATMEL_LCDC_INVFRAME_NORMAL	(0 << 9)
+#define		ATMEL_LCDC_INVFRAME_INVERTED	(1 << 9)
+#define	ATMEL_LCDC_INVLINE	(1 << 10)
+#define		ATMEL_LCDC_INVLINE_NORMAL	(0 << 10)
+#define		ATMEL_LCDC_INVLINE_INVERTED	(1 << 10)
+#define	ATMEL_LCDC_INVCLK	(1 << 11)
+#define		ATMEL_LCDC_INVCLK_NORMAL	(0 << 11)
+#define		ATMEL_LCDC_INVCLK_INVERTED	(1 << 11)
+#define	ATMEL_LCDC_INVDVAL	(1 << 12)
+#define		ATMEL_LCDC_INVDVAL_NORMAL	(0 << 12)
+#define		ATMEL_LCDC_INVDVAL_INVERTED	(1 << 12)
+#define	ATMEL_LCDC_CLKMOD	(1 << 15)
+#define		ATMEL_LCDC_CLKMOD_ACTIVEDISPLAY	(0 << 15)
+#define		ATMEL_LCDC_CLKMOD_ALWAYSACTIVE	(1 << 15)
+#define	ATMEL_LCDC_MEMOR	(1 << 31)
+#define		ATMEL_LCDC_MEMOR_BIG		(0 << 31)
+#define		ATMEL_LCDC_MEMOR_LITTLE		(1 << 31)
+
+#define ATMEL_LCDC_TIM1		0x0808
+#define	ATMEL_LCDC_VFP		(0xff <<  0)
+#define	ATMEL_LCDC_VBP_OFFSET		8
+#define	ATMEL_LCDC_VBP		(0xff <<  ATMEL_LCDC_VBP_OFFSET)
+#define	ATMEL_LCDC_VPW_OFFSET		16
+#define	ATMEL_LCDC_VPW		(0x3f << ATMEL_LCDC_VPW_OFFSET)
+#define	ATMEL_LCDC_VHDLY_OFFSET		24
+#define	ATMEL_LCDC_VHDLY	(0xf  << ATMEL_LCDC_VHDLY_OFFSET)
+
+#define ATMEL_LCDC_TIM2		0x080c
+#define	ATMEL_LCDC_HBP		(0xff  <<  0)
+#define	ATMEL_LCDC_HPW_OFFSET		8
+#define	ATMEL_LCDC_HPW		(0x3f  <<  ATMEL_LCDC_HPW_OFFSET)
+#define	ATMEL_LCDC_HFP_OFFSET		21
+#define	ATMEL_LCDC_HFP		(0x7ff << ATMEL_LCDC_HFP_OFFSET)
+
+#define ATMEL_LCDC_LCDFRMCFG	0x0810
+#define	ATMEL_LCDC_LINEVAL	(0x7ff <<  0)
+#define	ATMEL_LCDC_HOZVAL_OFFSET	21
+#define	ATMEL_LCDC_HOZVAL	(0x7ff << ATMEL_LCDC_HOZVAL_OFFSET)
+
+#define ATMEL_LCDC_FIFO		0x0814
+#define	ATMEL_LCDC_FIFOTH	(0xffff)
+
+#define ATMEL_LCDC_MVAL		0x0818
+
+#define ATMEL_LCDC_DP1_2	0x081c
+#define ATMEL_LCDC_DP4_7	0x0820
+#define ATMEL_LCDC_DP3_5	0x0824
+#define ATMEL_LCDC_DP2_3	0x0828
+#define ATMEL_LCDC_DP5_7	0x082c
+#define ATMEL_LCDC_DP3_4	0x0830
+#define ATMEL_LCDC_DP4_5	0x0834
+#define ATMEL_LCDC_DP6_7	0x0838
+#define	ATMEL_LCDC_DP1_2_VAL	(0xff)
+#define	ATMEL_LCDC_DP4_7_VAL	(0xfffffff)
+#define	ATMEL_LCDC_DP3_5_VAL	(0xfffff)
+#define	ATMEL_LCDC_DP2_3_VAL	(0xfff)
+#define	ATMEL_LCDC_DP5_7_VAL	(0xfffffff)
+#define	ATMEL_LCDC_DP3_4_VAL	(0xffff)
+#define	ATMEL_LCDC_DP4_5_VAL	(0xfffff)
+#define	ATMEL_LCDC_DP6_7_VAL	(0xfffffff)
+
+#define ATMEL_LCDC_PWRCON	0x083c
+#define	ATMEL_LCDC_PWR		(1    <<  0)
+#define	ATMEL_LCDC_GUARDT_OFFSET	1
+#define	ATMEL_LCDC_GUARDT	(0x7f <<  ATMEL_LCDC_GUARDT_OFFSET)
+#define	ATMEL_LCDC_BUSY		(1    << 31)
+
+#define ATMEL_LCDC_CONTRAST_CTR	0x0840
+#define	ATMEL_LCDC_PS		(3 << 0)
+#define		ATMEL_LCDC_PS_DIV1		(0 << 0)
+#define		ATMEL_LCDC_PS_DIV2		(1 << 0)
+#define		ATMEL_LCDC_PS_DIV4		(2 << 0)
+#define		ATMEL_LCDC_PS_DIV8		(3 << 0)
+#define	ATMEL_LCDC_POL		(1 << 2)
+#define		ATMEL_LCDC_POL_NEGATIVE		(0 << 2)
+#define		ATMEL_LCDC_POL_POSITIVE		(1 << 2)
+#define	ATMEL_LCDC_ENA		(1 << 3)
+#define		ATMEL_LCDC_ENA_PWMDISABLE	(0 << 3)
+#define		ATMEL_LCDC_ENA_PWMENABLE	(1 << 3)
+
+#define ATMEL_LCDC_CONTRAST_VAL	0x0844
+#define	ATMEL_LCDC_CVAL	(0xff)
+
+#define ATMEL_LCDC_IER		0x0848
+#define ATMEL_LCDC_IDR		0x084c
+#define ATMEL_LCDC_IMR		0x0850
+#define ATMEL_LCDC_ISR		0x0854
+#define ATMEL_LCDC_ICR		0x0858
+#define	ATMEL_LCDC_LNI		(1 << 0)
+#define	ATMEL_LCDC_LSTLNI	(1 << 1)
+#define	ATMEL_LCDC_EOFI		(1 << 2)
+#define	ATMEL_LCDC_UFLWI	(1 << 4)
+#define	ATMEL_LCDC_OWRI		(1 << 5)
+#define	ATMEL_LCDC_MERI		(1 << 6)
+
+#define ATMEL_LCDC_LUT(n)	(0x0c00 + ((n)*4))
+
+#endif /* __ATMEL_LCDC_H__ */