1b98d7c449
PXAFB overlay memory management is something messy: - it allocates memory dynamically on open/release, and it results in memory allocation failure after ~1h of uptime (system does not have 115k of physically contiguous memory) - in release callback it tries to free memory even if it was not allocated. Also driver touches FDADR1 on main plane reconfiguration, and it can cause problems if overlay1 is enabled. This patch attempts to fix those issues. Patch is based on Russell King's work. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
200 lines
4.2 KiB
C
200 lines
4.2 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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/* NOTE: the palette and frame dma descriptors are doubled to allow
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* the 2nd set for branch settings (FBRx)
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*/
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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 * 2];
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struct pxafb_dma_descriptor dma_desc[DMA_MAX * 2];
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};
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enum {
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OVERLAY1,
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OVERLAY2,
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};
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enum {
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OVERLAY_FORMAT_RGB = 0,
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OVERLAY_FORMAT_YUV444_PACKED,
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OVERLAY_FORMAT_YUV444_PLANAR,
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OVERLAY_FORMAT_YUV422_PLANAR,
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OVERLAY_FORMAT_YUV420_PLANAR,
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};
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#define NONSTD_TO_XPOS(x) (((x) >> 0) & 0x3ff)
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#define NONSTD_TO_YPOS(x) (((x) >> 10) & 0x3ff)
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#define NONSTD_TO_PFOR(x) (((x) >> 20) & 0x7)
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struct pxafb_layer;
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struct pxafb_layer_ops {
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void (*enable)(struct pxafb_layer *);
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void (*disable)(struct pxafb_layer *);
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void (*setup)(struct pxafb_layer *);
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};
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struct pxafb_layer {
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struct fb_info fb;
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int id;
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int registered;
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uint32_t usage;
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uint32_t control[2];
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struct pxafb_layer_ops *ops;
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void __iomem *video_mem;
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unsigned long video_mem_phys;
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size_t video_mem_size;
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struct completion branch_done;
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struct pxafb_info *fbi;
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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 * 2];
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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_FB_PXA_OVERLAY
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struct pxafb_layer overlay[2];
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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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/* maximum X and Y resolutions - note these are limits from the register
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* bits length instead of the real ones
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*/
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#define MAX_XRES 1024
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#define MAX_YRES 1024
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#endif /* __PXAFB_H__ */
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