77e196752b
The amount of video memory size is decided according to the following order: 1. <xres> x <yres> x <bits_per_pixel> by default, which is the backward compatible way 2. size specified in platform data 3. size specified in module parameter 'options' string or specified in kernel boot command line (see updated Documentation/fb/pxafb.txt) And now since the memory is allocated from system memory, the pxafb_mmap can be removed and the default fb_mmap() should be working all right. Also, since we now have introduced the 'struct pxafb_dma_buff' for DMA descriptors and palettes, the allocation can be separated cleanly. NOTE: the LCD DMA actually supports chained transfer (i.e. page-based transfers), to simplify the logic and keep the performance (with less TLB misses when accessing from memory mapped user space), the memory is allocated by alloc_pages_*() to ensures it's physical contiguous. Signed-off-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Eric Miao <ycmiao@ycmiao-hp520.(none)>
146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
#ifndef __PXAFB_H__
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#define __PXAFB_H__
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/*
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* linux/drivers/video/pxafb.h
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* -- Intel PXA250/210 LCD Controller Frame Buffer Device
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*
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* Copyright (C) 1999 Eric A. Thomas.
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* Copyright (C) 2004 Jean-Frederic Clere.
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* Copyright (C) 2004 Ian Campbell.
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* Copyright (C) 2004 Jeff Lackey.
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* Based on sa1100fb.c Copyright (C) 1999 Eric A. Thomas
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* which in turn is
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* Based on acornfb.c Copyright (C) Russell King.
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*
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* 2001-08-03: Cliff Brake <cbrake@acclent.com>
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* - ported SA1100 code to PXA
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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/* PXA LCD DMA descriptor */
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struct pxafb_dma_descriptor {
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unsigned int fdadr;
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unsigned int fsadr;
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unsigned int fidr;
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unsigned int ldcmd;
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};
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enum {
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PAL_NONE = -1,
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PAL_BASE = 0,
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PAL_OV1 = 1,
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PAL_OV2 = 2,
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PAL_MAX,
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};
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enum {
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DMA_BASE = 0,
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DMA_UPPER = 0,
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DMA_LOWER = 1,
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DMA_OV1 = 1,
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DMA_OV2_Y = 2,
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DMA_OV2_Cb = 3,
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DMA_OV2_Cr = 4,
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DMA_CURSOR = 5,
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DMA_CMD = 6,
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DMA_MAX,
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};
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/* maximum palette size - 256 entries, each 4 bytes long */
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#define PALETTE_SIZE (256 * 4)
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#define CMD_BUFF_SIZE (1024 * 50)
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struct pxafb_dma_buff {
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unsigned char palette[PAL_MAX * PALETTE_SIZE];
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uint16_t cmd_buff[CMD_BUFF_SIZE];
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struct pxafb_dma_descriptor pal_desc[PAL_MAX];
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struct pxafb_dma_descriptor dma_desc[DMA_MAX];
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};
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struct pxafb_info {
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struct fb_info fb;
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struct device *dev;
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struct clk *clk;
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void __iomem *mmio_base;
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struct pxafb_dma_buff *dma_buff;
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size_t dma_buff_size;
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dma_addr_t dma_buff_phys;
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dma_addr_t fdadr[DMA_MAX];
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void __iomem *video_mem; /* virtual address of frame buffer */
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unsigned long video_mem_phys; /* physical address of frame buffer */
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size_t video_mem_size; /* size of the frame buffer */
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u16 * palette_cpu; /* virtual address of palette memory */
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u_int palette_size;
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u_int lccr0;
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u_int lccr3;
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u_int lccr4;
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u_int cmap_inverse:1,
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cmap_static:1,
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unused:30;
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u_int reg_lccr0;
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u_int reg_lccr1;
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u_int reg_lccr2;
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u_int reg_lccr3;
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u_int reg_lccr4;
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u_int reg_cmdcr;
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unsigned long hsync_time;
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volatile u_char state;
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volatile u_char task_state;
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struct mutex ctrlr_lock;
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wait_queue_head_t ctrlr_wait;
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struct work_struct task;
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struct completion disable_done;
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#ifdef CONFIG_FB_PXA_SMARTPANEL
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uint16_t *smart_cmds;
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size_t n_smart_cmds;
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struct completion command_done;
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struct completion refresh_done;
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struct task_struct *smart_thread;
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#endif
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#ifdef CONFIG_CPU_FREQ
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struct notifier_block freq_transition;
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struct notifier_block freq_policy;
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#endif
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void (*lcd_power)(int, struct fb_var_screeninfo *);
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void (*backlight_power)(int);
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};
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#define TO_INF(ptr,member) container_of(ptr,struct pxafb_info,member)
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/*
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* These are the actions for set_ctrlr_state
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*/
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#define C_DISABLE (0)
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#define C_ENABLE (1)
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#define C_DISABLE_CLKCHANGE (2)
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#define C_ENABLE_CLKCHANGE (3)
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#define C_REENABLE (4)
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#define C_DISABLE_PM (5)
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#define C_ENABLE_PM (6)
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#define C_STARTUP (7)
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#define PXA_NAME "PXA"
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/*
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* Minimum X and Y resolutions
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*/
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#define MIN_XRES 64
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#define MIN_YRES 64
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#endif /* __PXAFB_H__ */
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