RK3066的LCD的驱动源码

mark83136 · 发表于 2015-7-29 10:32:04

/*
* drivers/video/rockchip/chips/rk3066b_lcdc.c
*
* Copyright (C) 2012 ROCKCHIP, Inc.
*Author:yzq<yzq@rock-chips.com>
* yxj<yxj@rock-chips.com>
*This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/earlysuspend.h>
#include <asm/div64.h>
#include <asm/uaccess.h>
#include <mach/iomux.h>

#include "rk3066b_lcdc.h"
#include "../hdmi/rk_hdmi.h"

static int dbg_thresd = 0;
module_param(dbg_thresd, int, S_IRUGO|S_IWUSR);
#define DBG(level,x...) do { if(unlikely(dbg_thresd >= level)) printk(KERN_INFO x); } while (0)

static int  rk3066b_lcdc_clk_enable(struct rk3066b_lcdc_device *lcdc_dev)
{

clk_enable(lcdc_dev->hclk);
clk_enable(lcdc_dev->dclk);
clk_enable(lcdc_dev->aclk);
clk_enable(lcdc_dev->pd);

spin_lock(&lcdc_dev->reg_lock);
lcdc_dev->clk_on = 1;
spin_unlock(&lcdc_dev->reg_lock);
printk("rk3066b lcdc%d clk enable...\n",lcdc_dev->id);

return 0;
}

static int rk3066b_lcdc_clk_disable(struct rk3066b_lcdc_device *lcdc_dev)
{
spin_lock(&lcdc_dev->reg_lock);
lcdc_dev->clk_on = 0;
spin_unlock(&lcdc_dev->reg_lock);
mdelay(25);
clk_disable(lcdc_dev->dclk);
clk_disable(lcdc_dev->hclk);
clk_disable(lcdc_dev->aclk);
clk_disable(lcdc_dev->pd);
printk("rk3066b lcdc%d clk disable...\n",lcdc_dev->id);

return 0;
}

static int rk3066b_lcdc_reg_resume(struct rk3066b_lcdc_device *lcdc_dev)
{
memcpy((u8*)lcdc_dev->preg, (u8*)&lcdc_dev->regbak, 0x9C);
return 0;
}

static int init_rk3066b_lcdc(struct rk_lcdc_device_driver *dev_drv)
{
int i=0;
int __iomem *c;
int v;

struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);

if(lcdc_dev->id == 0) //lcdc0
{
      lcdc_dev->pd = clk_get(NULL,"pd_lcdc0");
      lcdc_dev->hclk = clk_get(NULL,"hclk_lcdc0");
      lcdc_dev->aclk = clk_get(NULL,"aclk_lcdc0");
      lcdc_dev->dclk = clk_get(NULL,"dclk_lcdc0");
}
else if(lcdc_dev->id == 1)
{
      lcdc_dev->pd = clk_get(NULL,"pd_lcdc1");
      lcdc_dev->hclk = clk_get(NULL,"hclk_lcdc1");
      lcdc_dev->aclk = clk_get(NULL,"aclk_lcdc1");
      lcdc_dev->dclk = clk_get(NULL,"dclk_lcdc1");
}
else
{
      printk(KERN_ERR "invalid lcdc device!\n");
      return -EINVAL;
}
if (IS_ERR(lcdc_dev->pd) || (IS_ERR(lcdc_dev->aclk)) ||(IS_ERR(lcdc_dev->dclk)) || (IS_ERR(lcdc_dev->hclk)))
      {
            printk(KERN_ERR "failed to get lcdc%d clk source\n",lcdc_dev->id);
   }

rk3066b_lcdc_clk_enable(lcdc_dev);

if(lcdc_dev->id == 0)
{
      #if defined(CONFIG_RK3066B_LCDC0_IO_18V)
      v = 0x40004000;             //bit14: 1,1.8v;0,3.3v
      writel_relaxed(v,RK30_GRF_BASE + GRF_IO_CON4);
      #else
      v = 0x40000000;
      writel_relaxed(v,RK30_GRF_BASE + GRF_IO_CON4);
      #endif
}

if(lcdc_dev->id == 1) //iomux for lcdc1
{
      #if defined(CONFIG_RK3066B_LCDC1_IO_18V)
      v = 0x80008000;             //bit14: 1,1.8v;0,3.3v
      writel_relaxed(v,RK30_GRF_BASE + GRF_IO_CON4);
      #else
      v = 0x80000000;
      writel_relaxed(v,RK30_GRF_BASE + GRF_IO_CON4);
      #endif

      iomux_set(LCDC1_DCLK);
      iomux_set(LCDC1_DEN);
      iomux_set(LCDC1_HSYNC);
      iomux_set(LCDC1_VSYNC);
      iomux_set(LCDC1_D0);
      iomux_set(LCDC1_D1);
      iomux_set(LCDC1_D2);
      iomux_set(LCDC1_D3);
      iomux_set(LCDC1_D4);
      iomux_set(LCDC1_D5);
      iomux_set(LCDC1_D6);
      iomux_set(LCDC1_D7);
      iomux_set(LCDC1_D8);
      iomux_set(LCDC1_D9);
      iomux_set(LCDC1_D10);
      iomux_set(LCDC1_D11);
      iomux_set(LCDC1_D12);
      iomux_set(LCDC1_D13);
      iomux_set(LCDC1_D14);
      iomux_set(LCDC1_D15);
      iomux_set(LCDC1_D16);
      iomux_set(LCDC1_D17);
      iomux_set(LCDC1_D18);
      iomux_set(LCDC1_D19);
      iomux_set(LCDC1_D20);
      iomux_set(LCDC1_D21);
      iomux_set(LCDC1_D22);
      iomux_set(LCDC1_D23);

}
LcdMskReg(lcdc_dev,SYS_CFG, m_LCDC_AXICLK_AUTO_ENABLE | m_W0_AXI_OUTSTANDING2 |
      m_W1_AXI_OUTSTANDING2,v_LCDC_AXICLK_AUTO_ENABLE(1) | v_W0_AXI_OUTSTANDING2(1) |
      v_W1_AXI_OUTSTANDING2(1));//eanble axi-clk auto gating for low power
   LcdWrReg(lcdc_dev,AXI_MS_ID,v_HWC_CHANNEL_ID(5) | v_WIN2_CHANNEL_ID(4) |
      v_WIN1_YRGB_CHANNEL_ID(3) | v_WIN0_CBR_CHANNEL_ID(2) |
      v_WIN0_YRGB_CHANNEL_ID(1));
LcdMskReg(lcdc_dev, INT_STATUS,m_HOR_STARTMASK| m_FRM_STARTMASK |
            m_SCANNING_MASK, v_HOR_STARTMASK(1) | v_FRM_STARTMASK(1) |
            v_SCANNING_MASK(1));  //mask all interrupt in init
LcdMskReg(lcdc_dev,FIFO_WATER_MARK,m_WIN1_FIFO_FULL_LEVEL,v_WIN1_FIFO_FULL_LEVEL(0x1e0));
//LCDC_REG_CFG_DONE();  // write any value to  REG_CFG_DONE let config become effective
if(dev_drv->cur_screen->dsp_lut)          //resume dsp lut
{
      LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(0));
      LCDC_REG_CFG_DONE();

      mdelay(25); //wait for dsp lut disabled
      for(i=0;i<256;i++)
      {
         v = dev_drv->cur_screen->dsp_lut;
         c = lcdc_dev->dsp_lut_addr_base+i;
         writel_relaxed(v,c);
      }
      LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(1));//enable dsp lut
}

rk3066b_lcdc_clk_disable(lcdc_dev);
return 0;
}

static int rk3066b_lcdc_deinit(struct rk3066b_lcdc_device *lcdc_dev)
{
spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      lcdc_dev->clk_on = 0;
      LcdMskReg(lcdc_dev, INT_STATUS, m_FRM_STARTCLEAR, v_FRM_STARTCLEAR(1));
      LcdMskReg(lcdc_dev, INT_STATUS,m_HOR_STARTMASK| m_FRM_STARTMASK |
                     m_SCANNING_MASK, v_HOR_STARTMASK(1) | v_FRM_STARTMASK(1) |
                        v_SCANNING_MASK(1));  //mask all interrupt in init
      LcdSetBit(lcdc_dev,SYS_CFG,m_LCDC_STANDBY);
      LCDC_REG_CFG_DONE();
      spin_unlock(&lcdc_dev->reg_lock);
}
else //clk already disabled
{
      spin_unlock(&lcdc_dev->reg_lock);
      return 0;
}
mdelay(1);

return 0;
}

static int rk3066b_load_screen(struct rk_lcdc_device_driver *dev_drv, bool initscreen)
{
int ret = -EINVAL;
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
rk_screen *screen = dev_drv->cur_screen;
u64 ft;
int fps;
u16 face;
u16 mcu_total, mcu_rwstart, mcu_csstart, mcu_rwend, mcu_csend;
u16 right_margin = screen->right_margin;
u16 lower_margin = screen->lower_margin;
u16 x_res = screen->x_res, y_res = screen->y_res;

// set the rgb or mcu
spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      if(screen->type==SCREEN_MCU)
      {
            LcdMskReg(lcdc_dev, MCU_CTRL, m_MCU_OUTPUT_SELECT,v_MCU_OUTPUT_SELECT(1));
         // set out format and mcu timing
            mcu_total  = (screen->mcu_wrperiod*150*1000)/1000000;
            if(mcu_total>31)
            mcu_total = 31;
            if(mcu_total<3)
            mcu_total = 3;
            mcu_rwstart = (mcu_total+1)/4 - 1;
            mcu_rwend = ((mcu_total+1)*3)/4 - 1;
            mcu_csstart = (mcu_rwstart>2) ? (mcu_rwstart-3) : (0);
            mcu_csend = (mcu_rwend>15) ? (mcu_rwend-1) : (mcu_rwend);

            //DBG(1,">> mcu_total=%d, mcu_rwstart=%d, mcu_csstart=%d, mcu_rwend=%d, mcu_csend=%d \n",
            // mcu_total, mcu_rwstart, mcu_csstart, mcu_rwend, mcu_csend);

         // set horizontal & vertical out timing

            right_margin = x_res/6;
         screen->pixclock = 150000000; //mcu fix to 150 MHz
         LcdMskReg(lcdc_dev, MCU_CTRL,m_MCU_CS_ST | m_MCU_CS_END| m_MCU_RW_ST | m_MCU_RW_END |
                     m_MCU_WRITE_PERIOD | m_MCU_HOLDMODE_SELECT | m_MCU_HOLDMODE_FRAME_ST,
                     v_MCU_CS_ST(mcu_csstart) | v_MCU_CS_END(mcu_csend) | v_MCU_RW_ST(mcu_rwstart) |
                     v_MCU_RW_END(mcu_rwend) |  v_MCU_WRITE_PERIOD(mcu_total) |
                     v_MCU_HOLDMODE_SELECT((SCREEN_MCU==screen->type)?(1)0)) | v_MCU_HOLDMODE_FRAME_ST(0));

      }

      switch (screen->face)
      {
            case OUT_P565:
                     face = OUT_P565;
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(1) | v_DITHER_DOWN_MODE(0));
                     break;
            case OUT_P666:
                     face = OUT_P666;
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(1) | v_DITHER_DOWN_MODE(1));
                     break;
            case OUT_D888_P565:
                     face = OUT_P888;
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(1) | v_DITHER_DOWN_MODE(0));
                     break;
            case OUT_D888_P666:
                     face = OUT_P888;
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(1) | v_DITHER_DOWN_MODE(1));
                     break;
            case OUT_P888:
                     face = OUT_P888;
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_UP_EN, v_DITHER_UP_EN(1));
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(0) | v_DITHER_DOWN_MODE(0));
                     break;
            default:
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_UP_EN, v_DITHER_UP_EN(0));
                     LcdMskReg(lcdc_dev, DSP_CTRL0, m_DITHER_DOWN_EN | m_DITHER_DOWN_MODE, v_DITHER_DOWN_EN(0) | v_DITHER_DOWN_MODE(0));
                     face = screen->face;
                     break;
      }

      //use default overlay,set vsyn hsync den dclk polarity
      LcdMskReg(lcdc_dev, DSP_CTRL0,m_DISPLAY_FORMAT | m_HSYNC_POLARITY | m_VSYNC_POLARITY |
               m_DEN_POLARITY |m_DCLK_POLARITY,v_DISPLAY_FORMAT(face) |
               v_HSYNC_POLARITY(screen->pin_hsync) | v_VSYNC_POLARITY(screen->pin_vsync) |
            v_DEN_POLARITY(screen->pin_den) | v_DCLK_POLARITY(screen->pin_dclk));

      //set background color to black,set swap according to the screen panel,disable blank mode
      LcdMskReg(lcdc_dev,DSP_CTRL1,m_BLANK_MODE | m_BLACK_MODE | m_BG_COLOR, v_BLANK_MODE(0) |
                  v_BLACK_MODE(0) | v_BG_COLOR(0x000000));
      LcdMskReg(lcdc_dev,SWAP_CTRL,m_OUTPUT_RB_SWAP | m_OUTPUT_RG_SWAP | m_DELTA_SWAP | m_DUMMY_SWAP,
                  v_OUTPUT_RB_SWAP(screen->swap_rb) | v_OUTPUT_RG_SWAP(screen->swap_rg) |
                  v_DELTA_SWAP(screen->swap_delta) | v_DUMMY_SWAP(screen->swap_dumy));
      LcdWrReg(lcdc_dev, DSP_HTOTAL_HS_END,v_HSYNC(screen->hsync_len) |
               v_HORPRD(screen->hsync_len + screen->left_margin + x_res + right_margin));
      LcdWrReg(lcdc_dev, DSP_HACT_ST_END, v_HAEP(screen->hsync_len + screen->left_margin + x_res) |
               v_HASP(screen->hsync_len + screen->left_margin));

      LcdWrReg(lcdc_dev, DSP_VTOTAL_VS_END, v_VSYNC(screen->vsync_len) |
               v_VERPRD(screen->vsync_len + screen->upper_margin + y_res + lower_margin));
      LcdWrReg(lcdc_dev, DSP_VACT_ST_END,  v_VAEP(screen->vsync_len + screen->upper_margin+y_res)|
               v_VASP(screen->vsync_len + screen->upper_margin));
      // let above to take effect
      //LCDC_REG_CFG_DONE();
}
   spin_unlock(&lcdc_dev->reg_lock);

ret = clk_set_rate(lcdc_dev->dclk, screen->pixclock);
if(ret)
{
         printk(KERN_ERR ">>>>>> set lcdc%d dclk failed\n",lcdc_dev->id);
}
      lcdc_dev->driver.pixclock = lcdc_dev->pixclock = div_u64(1000000000000llu, clk_get_rate(lcdc_dev->dclk));

ft = (u64)(screen->upper_margin + screen->lower_margin + screen->y_res +screen->vsync_len)*
      (screen->left_margin + screen->right_margin + screen->x_res + screen->hsync_len)*
      (dev_drv->pixclock);    // one frame time ,(pico seconds)
fps = div64_u64(1000000000000llu,ft);
screen->ft = 1000/fps;
      printk("%s: dclk:%lu>>fps:%d ",lcdc_dev->driver.name,clk_get_rate(lcdc_dev->dclk),fps);

      if(screen->init)
      {
         screen->init();
      }
printk("%s for lcdc%d ok!\n",__func__,lcdc_dev->id);
return 0;
}

static int mcu_refresh(struct rk3066b_lcdc_device *lcdc_dev)
{

return 0;
}

//enable layer,open:1,enable;0 disable
static int win0_open(struct rk3066b_lcdc_device *lcdc_dev,bool open)
{

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      if(open)
      {
         if(!lcdc_dev->atv_layer_cnt)
         {
            LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(0));
         }
         lcdc_dev->atv_layer_cnt++;
      }
      else
      {
         lcdc_dev->atv_layer_cnt--;
      }
      lcdc_dev->driver.layer_par[0]->state = open;

      LcdMskReg(lcdc_dev, SYS_CFG, m_W0_EN, v_W0_EN(open));
      if(!lcdc_dev->atv_layer_cnt)  //if no layer used,disable lcdc
      {
         LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(1));
      }
      //LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);
printk(KERN_INFO "lcdc%d win0 %s\n",lcdc_dev->id,open?"open":"closed");
return 0;
}
static int win1_open(struct rk3066b_lcdc_device *lcdc_dev,bool open)
{
spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      if(open)
      {
         if(!lcdc_dev->atv_layer_cnt)
         {
            printk("lcdc%d wakeup from stanby\n",lcdc_dev->id);
            LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(0));
         }
         lcdc_dev->atv_layer_cnt++;
      }
      else
      {
         lcdc_dev->atv_layer_cnt--;
      }
      lcdc_dev->driver.layer_par[1]->state = open;

      LcdMskReg(lcdc_dev, SYS_CFG, m_W1_EN, v_W1_EN(open));
      if(!lcdc_dev->atv_layer_cnt)  //if no layer used,disable lcdc
      {
         printk(KERN_INFO "no layer of lcdc%d is used,go to standby!",lcdc_dev->id);
         LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(1));
      }
      LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);
printk(KERN_INFO "lcdc%d win1 %s\n",lcdc_dev->id,open?"open":"closed");
return 0;
}

static int rk3066b_lcdc_blank(struct rk_lcdc_device_driver*lcdc_drv,int layer_id,int blank_mode)
{
struct rk3066b_lcdc_device * lcdc_dev = container_of(lcdc_drv,struct rk3066b_lcdc_device ,driver);

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      switch(blank_mode)
         {
            case FB_BLANK_UNBLANK:
                  LcdMskReg(lcdc_dev,DSP_CTRL1,m_BLANK_MODE ,v_BLANK_MODE(0));
            break;
            case FB_BLANK_NORMAL:
                  LcdMskReg(lcdc_dev,DSP_CTRL1,m_BLANK_MODE ,v_BLANK_MODE(1));
            break;
            default:
            LcdMskReg(lcdc_dev,DSP_CTRL1,m_BLANK_MODE ,v_BLANK_MODE(1));
            break;
      }
      LCDC_REG_CFG_DONE();
      printk(KERN_INFO "%s>>>>>%d\n",__func__, blank_mode);
}
spin_unlock(&lcdc_dev->reg_lock);

      return 0;
}

static  int win0_display(struct rk3066b_lcdc_device *lcdc_dev,struct layer_par *par )
{
u32 y_addr;
u32 uv_addr;
y_addr = par->smem_start + par->y_offset;
      uv_addr = par->cbr_start + par->c_offset;
DBG(2,KERN_INFO "lcdc%d>>%s:y_addr:0x%x>>uv_addr:0x%x\n",lcdc_dev->id,__func__,y_addr,uv_addr);

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      LcdWrReg(lcdc_dev, WIN0_YRGB_MST,y_addr);
         LcdWrReg(lcdc_dev, WIN0_CBR_MST,uv_addr);
      LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);

return 0;

}

static  int win1_display(struct rk3066b_lcdc_device *lcdc_dev,struct layer_par *par )
{
u32 y_addr;
u32 uv_addr;
y_addr = par->smem_start + par->y_offset;
      uv_addr = par->cbr_start + par->c_offset;
DBG(2,KERN_INFO "lcdc%d>>%s>>y_addr:0x%x>>uv_addr:0x%x\n",lcdc_dev->id,__func__,y_addr,uv_addr);

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      LcdWrReg(lcdc_dev, WIN1_YRGB_MST, y_addr);
      LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);

return 0;
}

static  int win0_set_par(struct rk3066b_lcdc_device *lcdc_dev,rk_screen *screen,
struct layer_par *par )
{
u32 xact, yact, xvir, yvir, xpos, ypos;
u32 ScaleYrgbX = 0x1000;
u32 ScaleYrgbY = 0x1000;
u32 ScaleCbrX = 0x1000;
u32 ScaleCbrY = 0x1000;
u8 fmt_cfg =0 ; //data format register config value
char fmt[9] = "NULL";
xact = par->xact;             //active (origin) picture window width/height
yact = par->yact;
xvir = par->xvir;             // virtual resolution
yvir = par->yvir;
xpos = par->xpos+screen->left_margin + screen->hsync_len;
ypos = par->ypos+screen->upper_margin + screen->vsync_len;

DBG(1,"%s for lcdc%d>>format:%s>>>xact:%d>>yact:%d>>xsize:%d>>ysize:%d>>xvir:%d>>yvir:%d>>xpos:%d>>ypos:%d>>\n",
      __func__,lcdc_dev->id,get_format_string(par->format,fmt),xact,yact,par->xsize,par->ysize,xvir,yvir,xpos,ypos);

ScaleYrgbX = CalScale(xact, par->xsize); //both RGB and yuv need this two factor
ScaleYrgbY = CalScale(yact, par->ysize);
switch (par->format)
{
      case XBGR888:
      case ABGR888:
      case ARGB888:
         fmt_cfg = 0;
         break;
      case RGB565:
         fmt_cfg = 1;
         break;
      case YUV422:// yuv422
         fmt_cfg = 2;
         ScaleCbrX = CalScale((xact/2), par->xsize);
         ScaleCbrY = CalScale(yact, par->ysize);
         break;
      case YUV420: // yuv420
         fmt_cfg = 3;
         ScaleCbrX = CalScale(xact/2, par->xsize);
            ScaleCbrY = CalScale(yact/2, par->ysize);
            break;
      case YUV444:// yuv444
         fmt_cfg = 4;
         ScaleCbrX = CalScale(xact, par->xsize);
         ScaleCbrY = CalScale(yact, par->ysize);
         break;
      default:
         printk("%s:un supported format\n",__func__);
         break;
}

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      LcdWrReg(lcdc_dev, WIN0_SCL_FACTOR_YRGB, v_X_SCL_FACTOR(ScaleYrgbX) | v_Y_SCL_FACTOR(ScaleYrgbY));
      LcdWrReg(lcdc_dev, WIN0_SCL_FACTOR_CBR,v_X_SCL_FACTOR(ScaleCbrX)| v_Y_SCL_FACTOR(ScaleCbrY));
      LcdMskReg(lcdc_dev,SYS_CFG, m_W0_FORMAT, v_W0_FORMAT(fmt_cfg));       //(inf->video_mode==0)
      LcdWrReg(lcdc_dev, WIN0_ACT_INFO,v_ACT_WIDTH(xact) | v_ACT_HEIGHT(yact));
      LcdWrReg(lcdc_dev, WIN0_DSP_ST, v_DSP_STX(xpos) | v_DSP_STY(ypos));
      LcdWrReg(lcdc_dev, WIN0_DSP_INFO, v_DSP_WIDTH(par->xsize)| v_DSP_HEIGHT(par->ysize));
      LcdMskReg(lcdc_dev, WIN0_COLOR_KEY_CTRL, m_COLORKEY_EN | m_KEYCOLOR,
         v_COLORKEY_EN(0) | v_KEYCOLOR(0));
      LcdWrReg(lcdc_dev,WIN0_VIR,v_VIRWIDTH(xvir));
      //LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);

return 0;

}

static int win1_set_par(struct rk3066b_lcdc_device *lcdc_dev,rk_screen *screen,
struct layer_par *par )
{
u32 xact, yact, xvir, yvir, xpos, ypos;
u8 fmt_cfg;
char fmt[9]="NULL";
xact = par->xact;
yact = par->yact;
xvir = par->xvir;
yvir = par->yvir;
xpos = par->xpos+screen->left_margin + screen->hsync_len;
ypos = par->ypos+screen->upper_margin + screen->vsync_len;

DBG(1,"%s for lcdc%d>>format:%s>>>xact:%d>>yact:%d>>xsize:%d>>ysize:%d>>xvir:%d>>yvir:%d>>xpos:%d>>ypos:%d>>\n",
      __func__,lcdc_dev->id,get_format_string(par->format,fmt),xact,yact,par->xsize,par->ysize,xvir,yvir,xpos,ypos);

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      switch (par->format)
      {
         case XBGR888:
         case ABGR888:
         case ARGB888:
            fmt_cfg = 0;
            break;
         case RGB565:
            fmt_cfg = 1;
            break;
         default:
            printk("%s:un supported format\n",__func__);
            break;
      }

      LcdMskReg(lcdc_dev,SYS_CFG, m_W1_FORMAT, v_W1_FORMAT(fmt_cfg));
      LcdWrReg(lcdc_dev, WIN1_DSP_ST,v_DSP_STX(xpos) | v_DSP_STY(ypos));
      LcdWrReg(lcdc_dev, WIN1_DSP_INFO,v_DSP_WIDTH(par->xsize) | v_DSP_HEIGHT(par->ysize));
      // enable win1 color key and set the color to black(rgb=0)
      LcdMskReg(lcdc_dev,WIN1_COLOR_KEY_CTRL, m_COLORKEY_EN | m_KEYCOLOR,v_COLORKEY_EN(1) | v_KEYCOLOR(0));
      LcdWrReg(lcdc_dev,WIN1_VIR,v_VIRWIDTH(xvir));

      //LCDC_REG_CFG_DONE();
}
spin_unlock(&lcdc_dev->reg_lock);
return 0;
}

static int rk3066b_lcdc_open(struct rk_lcdc_device_driver *dev_drv,int layer_id,bool open)
{
int i=0;
int __iomem *c;
int v;
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);

if((open) && (!lcdc_dev->atv_layer_cnt)) //enable clk,when first layer open
{
      rk3066b_lcdc_clk_enable(lcdc_dev);
      rk3066b_lcdc_reg_resume(lcdc_dev); //resume reg
      LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(0));
      rk3066b_load_screen(dev_drv,1);
      spin_lock(&lcdc_dev->reg_lock);
      if(dev_drv->cur_screen->dsp_lut)          //resume dsp lut
      {
         LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(0));
         LCDC_REG_CFG_DONE();

         mdelay(25); //wait for dsp lut disabled
         for(i=0;i<256;i++)
         {
            v = dev_drv->cur_screen->dsp_lut;
            c = lcdc_dev->dsp_lut_addr_base+i;
            writel_relaxed(v,c);
         }
         LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(1));//enable dsp lut
      }
      spin_unlock(&lcdc_dev->reg_lock);
}
if(layer_id == 0)
{
      win0_open(lcdc_dev,open);
}
else if(layer_id == 1)
{
      win1_open(lcdc_dev,open);
}

if((!open) && (!lcdc_dev->atv_layer_cnt))  //when all layer closed,disable clk
{
      LcdMskReg(lcdc_dev, INT_STATUS, m_FRM_STARTCLEAR, v_FRM_STARTCLEAR(1));
      LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(1));
      LCDC_REG_CFG_DONE();
      rk3066b_lcdc_clk_disable(lcdc_dev);
}
return 0;
}

static int rk3066b_lcdc_set_par(struct rk_lcdc_device_driver *dev_drv,int layer_id)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
struct layer_par *par = NULL;
rk_screen *screen = dev_drv->cur_screen;
if(!screen)
{
      printk(KERN_ERR "screen is null!\n");
      return -ENOENT;
}
if(layer_id==0)
{
      par = dev_drv->layer_par[0];
         win0_set_par(lcdc_dev,screen,par);
}
else if(layer_id==1)
{
      par = dev_drv->layer_par[1];
         win1_set_par(lcdc_dev,screen,par);
}

return 0;
}

int rk3066b_lcdc_pan_display(struct rk_lcdc_device_driver * dev_drv,int layer_id)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
struct layer_par *par = NULL;
rk_screen *screen = dev_drv->cur_screen;
unsigned long flags;
int timeout;
if(!screen)
{
      printk(KERN_ERR "screen is null!\n");
      return -ENOENT;
}
if(layer_id==0)
{
      par = dev_drv->layer_par[0];
         win0_display(lcdc_dev,par);
}
else if(layer_id==1)
{
      par = dev_drv->layer_par[1];
         win1_display(lcdc_dev,par);
}
if((dev_drv->first_frame))  //this is the first frame of the system ,enable frame start interrupt
{
      dev_drv->first_frame = 0;
      LcdMskReg(lcdc_dev,INT_STATUS,m_HOR_STARTMASK | m_FRM_STARTMASK | m_SCANNING_MASK |
         m_HOR_STARTCLEAR | m_FRM_STARTCLEAR |m_SCANNING_CLEAR | m_SCAN_LINE_NUM,
            v_HOR_STARTMASK(1) | v_FRM_STARTMASK(0) | v_SCANNING_MASK(0) |
            v_HOR_STARTCLEAR(1) | v_FRM_STARTCLEAR(1) | v_SCANNING_CLEAR(1) |
            //v_SCANNING_CLEAR(screen->vsync_len + screen->upper_margin+screen->y_res -1));
            v_SCAN_LINE_NUM(screen->vsync_len + screen->upper_margin+screen->y_res -1));
      LCDC_REG_CFG_DONE();  // write any value to  REG_CFG_DONE let config become effective

}

#if 0
if(dev_drv->num_buf < 3) //3buffer ,no need to  wait for sysn
{
      spin_lock_irqsave(&dev_drv->cpl_lock,flags);
      init_completion(&dev_drv->frame_done);
      spin_unlock_irqrestore(&dev_drv->cpl_lock,flags);
      timeout = wait_for_completion_timeout(&dev_drv->frame_done,msecs_to_jiffies(dev_drv->cur_screen->ft+5));
      if(!timeout&&(!dev_drv->frame_done.done))
      {
         printk(KERN_ERR "wait for new frame start time out!\n");
         return -ETIMEDOUT;
      }
}
#endif

return 0;
}

int rk3066b_lcdc_ioctl(struct rk_lcdc_device_driver * dev_drv,unsigned int cmd, unsigned long arg,int layer_id)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
u32 panel_size[2];
void __user *argp = (void __user *)arg;
int ret = 0;
switch(cmd)
{
      case RK_FBIOGET_PANEL_SIZE: //get panel size
                  panel_size[0] = lcdc_dev->screen->x_res;
                  panel_size[1] = lcdc_dev->screen->y_res;
                  if(copy_to_user(argp, panel_size, 8))
            return -EFAULT;
         break;
      default:
         break;
}

return ret;
}
static int rk3066b_lcdc_get_layer_state(struct rk_lcdc_device_driver *dev_drv,int layer_id)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
struct layer_par *par = dev_drv->layer_par[layer_id];

spin_lock(&lcdc_dev->reg_lock);
if(lcdc_dev->clk_on)
{
      if(layer_id == 0)
      {
         par->state = LcdReadBit(lcdc_dev,SYS_CFG,m_W0_EN);
      }
      else if( layer_id == 1)
      {
         par->state = LcdReadBit(lcdc_dev,SYS_CFG,m_W1_EN);
      }
}
spin_unlock(&lcdc_dev->reg_lock);

return par->state;

}

/***********************************
overlay manager
swap:1 win0 on the top of win1
      0 win1 on the top of win0
set  : 1 set overlay
      0 get overlay state
************************************/
static int rk3066b_lcdc_ovl_mgr(struct rk_lcdc_device_driver *dev_drv,int swap,bool set)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
int ovl;
spin_lock(&lcdc_dev->reg_lock);
if(lcdc_dev->clk_on)
{
      if(set)  //set overlay
      {
         LcdMskReg(lcdc_dev,DSP_CTRL0,m_W0W1_POSITION_SWAP,v_W0W1_POSITION_SWAP(swap));
         LcdWrReg(lcdc_dev, REG_CFG_DONE, 0x01);
         LCDC_REG_CFG_DONE();
         ovl = swap;
      }
      else  //get overlay
      {
         ovl = LcdReadBit(lcdc_dev,DSP_CTRL0,m_W0W1_POSITION_SWAP);
      }
}
else
{
      ovl = -EPERM;
}
spin_unlock(&lcdc_dev->reg_lock);

return ovl;
}

static ssize_t rk3066b_lcdc_get_disp_info(struct rk_lcdc_device_driver *dev_drv,char *buf,int layer_id)

{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
char format_w0[9]= "NULL";
char format_w1[9]= "NULL";
char status_w0[9]= "NULL";
char status_w1[9]= "NULL";
u32 fmt_id = LcdRdReg(lcdc_dev,SYS_CFG);
u32 act_info,dsp_info,dsp_st,factor;
u16 xvir_w0,x_act_w0,y_act_w0,x_dsp_w0,y_dsp_w0,x_st_w0,y_st_w0;
u16 xvir_w1,x_dsp_w1,y_dsp_w1,x_st_w1,y_st_w1;
u16 x_scale,y_scale;
int ovl = LcdReadBit(lcdc_dev,DSP_CTRL0,m_W0W1_POSITION_SWAP);

      switch((fmt_id&m_W0_FORMAT)>>3)
      {
            case 0:
                     strcpy(format_w0,"ARGB888");
                     break;
            case 1:
                     strcpy(format_w0,"RGB565");
                     break;
            case 2:
                     strcpy(format_w0,"YCbCr422");
                     break;
            case 3:
                     strcpy(format_w0,"YCbCr420");
                     break;
            case 5:
                     strcpy(format_w0,"YCbCr444");
                     break;
            default:
                     strcpy(format_w0,"invalid\n");
                     break;
      }

   switch((fmt_id&m_W1_FORMAT)>>2)
      {
            case 0:
                     strcpy(format_w1,"ARGB888");
                     break;
            case 1:
                     strcpy(format_w1,"RGB565");
                     break;
            default:
                     strcpy(format_w1,"invalid\n");
                     break;
      }

if((fmt_id&m_W0_EN)>>11)
{
      strcpy(status_w0,"enabled");
}
else
{
      strcpy(status_w0,"disabled");
}

if((fmt_id&m_W1_EN)>>10)
{
      strcpy(status_w1,"enabled");
}
else
{
      strcpy(status_w1,"disabled");
}

xvir_w0 = LcdRdReg(lcdc_dev,WIN0_VIR)&0xffff;
act_info = LcdRdReg(lcdc_dev,WIN0_ACT_INFO);
dsp_info = LcdRdReg(lcdc_dev,WIN0_DSP_INFO);
dsp_st = LcdRdReg(lcdc_dev,WIN0_DSP_ST);
factor = LcdRdReg(lcdc_dev,WIN0_SCL_FACTOR_YRGB);
x_act_w0 =  (act_info&0xffff);
y_act_w0 = (act_info>>16);
x_dsp_w0 = (dsp_info&0x7ff);
y_dsp_w0 = (dsp_info>>16);
x_scale = 4096*100/(factor&0xffff);
y_scale = 4096*100/(factor>>16);
x_st_w0 = dsp_st&0xffff;
y_st_w0 = dsp_st>>16;

xvir_w1 = LcdRdReg(lcdc_dev,WIN1_VIR)&0xffff;
dsp_info = LcdRdReg(lcdc_dev,WIN1_DSP_INFO);
dsp_st = LcdRdReg(lcdc_dev,WIN1_DSP_ST);
x_dsp_w1 = dsp_info&0x7ff;
y_dsp_w1 = dsp_info>>16;
x_st_w1 = dsp_st&0xffff;
y_st_w1 = dsp_st>>16;

return snprintf(buf,PAGE_SIZE,
      "win0:%s\n"
      "xvir:%d\n"
      "xact:%d\n"
      "yact:%d\n"
      "xdsp:%d\n"
      "ydsp:%d\n"
      "x_st:%d\n"
      "y_st:%d\n"
      "x_scale:%d.%d\n"
      "y_scale:%d.%d\n"
      "format:%s\n"
      "YRGB buffer addr:0x%08x\n"
      "CBR buffer addr:0x%08x\n\n"
      "win1:%s\n"
      "xvir:%d\n"
      "xdsp:%d\n"
      "ydsp:%d\n"
      "x_st:%d\n"
      "y_st:%d\n"
      "format:%s\n"
      "YRGB buffer addr:0x%08x\n"
      "overlay:%s\n",
      status_w0,
            xvir_w0,
            x_act_w0,
            y_act_w0,
            x_dsp_w0,
            y_dsp_w0,
            x_st_w0,
            y_st_w0,
            x_scale/100,
            x_scale%100,
            y_scale/100,
            y_scale%100,
            format_w0,
            LcdRdReg(lcdc_dev,WIN0_YRGB_MST),
            LcdRdReg(lcdc_dev,WIN0_CBR_MST),
            status_w1,
            xvir_w1,
            x_dsp_w1,
            y_dsp_w1,
            x_st_w1,
            y_st_w1,
            format_w1,
            LcdRdReg(lcdc_dev,WIN1_YRGB_MST),
            ovl ? "win0 on the top of win1\n":"win1 on the top of win0\n");
      return 0;
}

/*******************************************
lcdc fps manager,set or get lcdc fps
set:0 get
   1 set
********************************************/
static int rk3066b_lcdc_fps_mgr(struct rk_lcdc_device_driver *dev_drv,int fps,bool set)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
rk_screen * screen = dev_drv->cur_screen;
u64 ft = 0;
u32 dotclk;
int ret;

if(set)
{
      ft = div_u64(1000000000000llu,fps);
      dev_drv->pixclock = div_u64(ft,(screen->upper_margin + screen->lower_margin + screen->y_res +screen->vsync_len)*
            (screen->left_margin + screen->right_margin + screen->x_res + screen->hsync_len));
      dotclk = div_u64(1000000000000llu,dev_drv->pixclock);
      ret = clk_set_rate(lcdc_dev->dclk, dotclk);
      if(ret)
      {
            printk(KERN_ERR ">>>>>> set lcdc%d dclk failed\n",lcdc_dev->id);
      }
         dev_drv->pixclock = lcdc_dev->pixclock = div_u64(1000000000000llu, clk_get_rate(lcdc_dev->dclk));

}

ft = (u64)(screen->upper_margin + screen->lower_margin + screen->y_res +screen->vsync_len)*
(screen->left_margin + screen->right_margin + screen->x_res + screen->hsync_len)*
(dev_drv->pixclock);    // one frame time ,(pico seconds)
fps = div64_u64(1000000000000llu,ft);
screen->ft = 1000/fps ;  //one frame time in ms
return fps;
}

static int rk3066b_fb_layer_remap(struct rk_lcdc_device_driver *dev_drv,
      enum fb_win_map_order order)
{
      mutex_lock(&dev_drv->fb_win_id_mutex);
if(order == FB_DEFAULT_ORDER)
{
      order = FB0_WIN0_FB1_WIN1_FB2_WIN2;
}
      dev_drv->fb2_win_id  = order/100;
      dev_drv->fb1_win_id = (order/10)%10;
      dev_drv->fb0_win_id = order%10;
      mutex_unlock(&dev_drv->fb_win_id_mutex);

      printk("fb0:win%d\nfb1:win%d\nfb2:win%d\n",dev_drv->fb0_win_id,dev_drv->fb1_win_id,
            dev_drv->fb2_win_id);

      return 0;
}

static int rk3066b_fb_get_layer(struct rk_lcdc_device_driver *dev_drv,const char *id)
{
      int layer_id = 0;
      mutex_lock(&dev_drv->fb_win_id_mutex);
      if(!strcmp(id,"fb0") || !strcmp(id,"fb2"))
      {
            layer_id = dev_drv->fb0_win_id;
      }
      else if(!strcmp(id,"fb1") || !strcmp(id,"fb3"))
      {
            layer_id = dev_drv->fb1_win_id;
      }
      else
      {
            printk(KERN_ERR "%s>>un supported %s\n",__func__,id);
            layer_id = -1;
      }
      mutex_unlock(&dev_drv->fb_win_id_mutex);

      return  layer_id;
}

static void rk3066b_lcdc_reg_dump(struct rk3066b_lcdc_device *lcdc_dev)
{
int *cbase =  (int *)lcdc_dev->reg_vir_base;
int i,j;

for(i=0; i<=(0xa0>>4);i++)
{
      for(j=0;j<4;j++)
         printk("%08x  ",readl(cbase+i*4 +j));
      printk("\n");
}

}

int rk3066b_lcdc_early_suspend(struct rk_lcdc_device_driver *dev_drv)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);

if(dev_drv->screen0->standby)
      dev_drv->screen0->standby(1);
if(dev_drv->screen_ctr_info->io_disable)
      dev_drv->screen_ctr_info->io_disable();

spin_lock(&lcdc_dev->reg_lock);
if(likely(lcdc_dev->clk_on))
{
      lcdc_dev->clk_on = 0;
      LcdMskReg(lcdc_dev, INT_STATUS, m_FRM_STARTCLEAR, v_FRM_STARTCLEAR(1));
      LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(1));
      LCDC_REG_CFG_DONE();
      spin_unlock(&lcdc_dev->reg_lock);
}
else  //clk already disabled
{
      spin_unlock(&lcdc_dev->reg_lock);
      return 0;
}


mdelay(30);
clk_disable(lcdc_dev->dclk);
clk_disable(lcdc_dev->hclk);
clk_disable(lcdc_dev->aclk);
clk_disable(lcdc_dev->pd);

return 0;
}

int rk3066b_lcdc_early_resume(struct rk_lcdc_device_driver *dev_drv)
{
struct rk3066b_lcdc_device *lcdc_dev = container_of(dev_drv,struct rk3066b_lcdc_device,driver);
int i=0;
int __iomem *c;
int v;

if(dev_drv->screen_ctr_info->io_enable)       //power on
      dev_drv->screen_ctr_info->io_enable();

if(!lcdc_dev->clk_on)
{
      clk_enable(lcdc_dev->pd);
      clk_enable(lcdc_dev->hclk);
      clk_enable(lcdc_dev->dclk);
      clk_enable(lcdc_dev->aclk);
}
mdelay(5);
memcpy((u8*)lcdc_dev->preg, (u8*)&lcdc_dev->regbak, 0x24);  //resume reg ,skip INT_STATUS reg
memcpy(((u8*)lcdc_dev->preg) + 0x28,((u8*)&lcdc_dev->regbak) + 0x28, 0x74);

spin_lock(&lcdc_dev->reg_lock);

if(dev_drv->cur_screen->dsp_lut)          //resume dsp lut
{
      LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(0));
      LCDC_REG_CFG_DONE();

      mdelay(25); //wait for dsp lut disabled
      for(i=0;i<256;i++)
      {
         v = dev_drv->cur_screen->dsp_lut;
         c = lcdc_dev->dsp_lut_addr_base+i;
         writel_relaxed(v,c);
      }
      LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(1));//enable dsp lut
}
if(lcdc_dev->atv_layer_cnt)
{
      LcdMskReg(lcdc_dev, SYS_CFG,m_LCDC_STANDBY,v_LCDC_STANDBY(0));
      LcdMskReg(lcdc_dev, INT_STATUS, m_SCANNING_CLEAR | m_FRM_STARTCLEAR | m_HOR_STARTCLEAR |
                  m_SCANNING_MASK | m_HOR_STARTMASK | m_FRM_STARTMASK ,
                  v_SCANNING_CLEAR(1) | v_FRM_STARTCLEAR(1) | v_HOR_STARTCLEAR(1) |
                  v_SCANNING_MASK(0) | v_FRM_STARTMASK(0) | v_HOR_STARTMASK(1));
      LCDC_REG_CFG_DONE();
}
lcdc_dev->clk_on = 1;
spin_unlock(&lcdc_dev->reg_lock);

if(!lcdc_dev->atv_layer_cnt)
      rk3066b_lcdc_clk_disable(lcdc_dev);

if(dev_drv->screen0->standby)
      dev_drv->screen0->standby(0);       //screen wake up

      return 0;
}

static int no_report(struct rk3066b_lcdc_device *lcdc_dev)
{
struct rk_lcdc_device_driver *dev = &(lcdc_dev->driver);
static u32 lcdc0_old_addr = 0,cur_addr = 0;
static u32 mode = 0,num = 0;
static u32 cur_state = 0,old_state = 0;

if(dev->screen_ctr_info->prop == PRMRY){
      cur_addr = LcdRdReg(lcdc_dev,WIN0_YRGB_MST);
      if(lcdc0_old_addr != cur_addr){
         if(cur_state++ > 10000)
            cur_state = 0;

         lcdc0_old_addr = cur_addr;
      }
}

if(old_state == cur_state){
      if(num++>10 && mode != 0)
         mode = 0;
}
else{
      mode = 1;
      num = 0;
}

if(mode == 1 && old_state == cur_state){
      return -1;
}

old_state = cur_state;

return 0;
}

static irqreturn_t rk3066b_lcdc_isr(int irq, void *dev_id)
{
struct rk3066b_lcdc_device *lcdc_dev = (struct rk3066b_lcdc_device *)dev_id;

u32 int_reg = LcdRdReg(lcdc_dev,INT_STATUS);
if(int_reg & m_FRM_START){
ktime_t timestamp = ktime_get();

LcdMskReg(lcdc_dev, INT_STATUS, m_FRM_STARTCLEAR, v_FRM_STARTCLEAR(1));

#if defined(CONFIG_FB_ROTATE) || !defined(CONFIG_THREE_FB_BUFFER)
if(hdmi_get_hotplug() == HDMI_HPD_ACTIVED){
      if(no_report(lcdc_dev)){
         return IRQ_HANDLED;
      }
}
#endif
//LcdMskReg(lcdc_dev, INT_STATUS, m_LINE_FLAG_INT_CLEAR, v_LINE_FLAG_INT_CLEAR(1));

#if 0
if(lcdc_dev->driver.num_buf < 3)  //three buffer ,no need to wait for sync
{
      spin_lock(&(lcdc_dev->driver.cpl_lock));
      complete(&(lcdc_dev->driver.frame_done));
      spin_unlock(&(lcdc_dev->driver.cpl_lock));
}
#endif

lcdc_dev->driver.vsync_info.timestamp = timestamp;
wake_up_interruptible_all(&lcdc_dev->driver.vsync_info.wait);
}
else if(int_reg & m_SCANNING_FLAG){
      LcdMskReg(lcdc_dev, INT_STATUS, m_FRM_STARTCLEAR, v_SCANNING_CLEAR(1));
}
return IRQ_HANDLED;
}

static int rk3066b_set_dsp_lut(struct rk_lcdc_device_driver *dev_drv,int *lut)
{
int i=0;
int __iomem *c;
int v;
int ret = 0;

struct rk3066b_lcdc_device *lcdc_dev =
            container_of(dev_drv,struct rk3066b_lcdc_device,driver);
LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(0));
LCDC_REG_CFG_DONE();
msleep(25);
if(dev_drv->cur_screen->dsp_lut)
{
      for(i=0;i<256;i++)
      {
         v = dev_drv->cur_screen->dsp_lut = lut;
         c = lcdc_dev->dsp_lut_addr_base+i;
         writel_relaxed(v,c);
      }
}
else
{
      dev_err(dev_drv->dev,"no buffer to backup lut data!\n");
      ret =  -1;
}
LcdMskReg(lcdc_dev,SYS_CFG,m_DSIP_LUT_CTL,v_DSIP_LUT_CTL(1));
LCDC_REG_CFG_DONE();

return ret;
}

int rk3066b_lcdc_poll_vblank(struct rk_lcdc_device_driver * dev_drv)
{
struct rk3066b_lcdc_device *lcdc_dev =
            container_of(dev_drv,struct rk3066b_lcdc_device,driver);
      u32 int_reg ;
int ret;
//spin_lock(&lcdc_dev->reg_lock);
if(lcdc_dev->clk_on)
{
      int_reg = LcdRdReg(lcdc_dev,INT_STATUS);
         if(int_reg & m_SCANNING_FLAG)
         {
               LcdMskReg(lcdc_dev, INT_STATUS, m_SCANNING_CLEAR,v_SCANNING_CLEAR(1));
               ret =  RK_LF_STATUS_FC;
         }
         else
               ret = RK_LF_STATUS_FR;
}
else
{
      ret = RK_LF_STATUS_NC;
}
//spin_unlock(&lcdc_dev->reg_lock);

return ret;
}

static struct layer_par lcdc_layer[] = {
[0] = {
      .name       = "win0",
      .id       = 0,
      .support_3d = true,
},
[1] = {
      .name       = "win1",
      .id       = 1,
      .support_3d = false,
},
};

static struct rk_lcdc_device_driver lcdc_driver = {
.name          = "lcdc",
.def_layer_par       = lcdc_layer,
.num_layer       = ARRAY_SIZE(lcdc_layer),
.open          = rk3066b_lcdc_open,
.init_lcdc       = init_rk3066b_lcdc,
.ioctl          = rk3066b_lcdc_ioctl,
.suspend       = rk3066b_lcdc_early_suspend,
.resume          = rk3066b_lcdc_early_resume,
.set_par             = rk3066b_lcdc_set_par,
.blank                = rk3066b_lcdc_blank,
.pan_display          = rk3066b_lcdc_pan_display,
.load_screen       = rk3066b_load_screen,
.get_layer_state = rk3066b_lcdc_get_layer_state,
.ovl_mgr       = rk3066b_lcdc_ovl_mgr,
.get_disp_info       = rk3066b_lcdc_get_disp_info,
.fps_mgr       = rk3066b_lcdc_fps_mgr,
.fb_get_layer          = rk3066b_fb_get_layer,
.fb_layer_remap       = rk3066b_fb_layer_remap,
.set_dsp_lut          = rk3066b_set_dsp_lut,
.poll_vblank       = rk3066b_lcdc_poll_vblank,
};
#ifdef CONFIG_PM
static int rk3066b_lcdc_suspend(struct platform_device *pdev, pm_message_t state)
{
return 0;
}

static int rk3066b_lcdc_resume(struct platform_device *pdev)
{
return 0;
}

#else
#define rk3066b_lcdc_suspend NULL
#define rk3066b_lcdc_resume NULL
#endif

static int __devinit rk3066b_lcdc_probe (struct platform_device *pdev)
{
struct rk3066b_lcdc_device *lcdc_dev=NULL;
rk_screen *screen;
rk_screen *screen1;
struct rk29fb_info *screen_ctr_info;
struct resource *res = NULL;
struct resource *mem;
int ret = 0;

/*************Malloc rk3066blcdc_inf and set it to pdev for drvdata**********/
lcdc_dev = kzalloc(sizeof(struct rk3066b_lcdc_device), GFP_KERNEL);
      if(!lcdc_dev)
      {
         dev_err(&pdev->dev, ">>rk3066b lcdc device kmalloc fail!");
         return -ENOMEM;
      }
platform_set_drvdata(pdev, lcdc_dev);
lcdc_dev->id = pdev->id;
screen_ctr_info = (struct rk29fb_info * )pdev->dev.platform_data;
screen =  kzalloc(sizeof(rk_screen), GFP_KERNEL);
if(!screen)
{
      dev_err(&pdev->dev, ">>rk3066b lcdc screen kmalloc fail!");
         ret =  -ENOMEM;
      goto err0;
}
else
{
      lcdc_dev->screen = screen;
}
screen->lcdc_id = lcdc_dev->id;
screen->screen_id = 0;

#if defined(CONFIG_ONE_LCDC_DUAL_OUTPUT_INF)&& (defined(CONFIG_RK610_LVDS) || defined(CONFIG_RK616_LVDS))
screen1 =  kzalloc(sizeof(rk_screen), GFP_KERNEL);
if(!screen1)
{
      dev_err(&pdev->dev, ">>rk3066b lcdc screen1 kmalloc fail!");
         ret =  -ENOMEM;
      goto err0;
}
screen1->lcdc_id = 1;
screen1->screen_id = 1;
printk("use lcdc%d and rk610 implemention dual display!\n",lcdc_dev->id);

#endif
/****************get lcdc0 reg  *************************/
res = platform_get_resource(pdev, IORESOURCE_MEM,0);
if (res == NULL)
      {
         dev_err(&pdev->dev, "failed to get io resource for lcdc%d \n",lcdc_dev->id);
         ret = -ENOENT;
      goto err1;
      }
      lcdc_dev->reg_phy_base = res->start;
lcdc_dev->len = resource_size(res);
      mem = request_mem_region(lcdc_dev->reg_phy_base, resource_size(res), pdev->name);
      if (mem == NULL)
      {
         dev_err(&pdev->dev, "failed to request mem region for lcdc%d\n",lcdc_dev->id);
         ret = -ENOENT;
      goto err1;
      }
lcdc_dev->reg_vir_base = ioremap(lcdc_dev->reg_phy_base,  resource_size(res));
if (lcdc_dev->reg_vir_base == NULL)
{
      dev_err(&pdev->dev, "cannot map IO\n");
      ret = -ENXIO;
      goto err2;
}

      lcdc_dev->preg = (LCDC_REG*)lcdc_dev->reg_vir_base;
printk("lcdc%d:reg_phy_base = 0x%08x,reg_vir_base:0x%p\n",pdev->id,lcdc_dev->reg_phy_base, lcdc_dev->preg);
lcdc_dev->dsp_lut_addr_base = (lcdc_dev->reg_vir_base+DSP_LUT_ADDR);

lcdc_dev->driver.dev=&pdev->dev;
lcdc_dev->driver.screen0 = screen;
#if defined(CONFIG_ONE_LCDC_DUAL_OUTPUT_INF)&& (defined(CONFIG_RK610_LVDS) || defined(CONFIG_RK616_LVDS))
lcdc_dev->driver.screen1 = screen1;
#endif
lcdc_dev->driver.cur_screen = screen;
lcdc_dev->driver.screen_ctr_info = screen_ctr_info;
spin_lock_init(&lcdc_dev->reg_lock);
lcdc_dev->irq = platform_get_irq(pdev, 0);
if(lcdc_dev->irq < 0)
{
      dev_err(&pdev->dev, "cannot find IRQ\n");
      goto err3;
}
ret = request_irq(lcdc_dev->irq, rk3066b_lcdc_isr, IRQF_DISABLED,dev_name(&pdev->dev),lcdc_dev);
if (ret)
{
         dev_err(&pdev->dev, "cannot requeset irq %d - err %d\n", lcdc_dev->irq, ret);
         ret = -EBUSY;
         goto err3;
}

if(screen_ctr_info->set_screen_info)
{
      screen_ctr_info->set_screen_info(screen,screen_ctr_info->lcd_info);
      if(SCREEN_NULL==screen->type)
      {
         printk(KERN_WARNING "no display device on lcdc%d!?\n",lcdc_dev->id);
         ret = -ENODEV;
      }
      if(screen_ctr_info->io_init)
         screen_ctr_info->io_init(NULL);
}
else
{
      printk(KERN_WARNING "no display device on lcdc%d!?\n",lcdc_dev->id);
      ret =  -ENODEV;
      goto err4;
}

ret = rk_fb_register(&(lcdc_dev->driver),&lcdc_driver,lcdc_dev->id);
if(ret < 0)
{
      printk(KERN_ERR "register fb for lcdc%d failed!\n",lcdc_dev->id);
      goto err4;
}
printk("rk3066b lcdc%d probe ok!\n",lcdc_dev->id);

return 0;

err4:
free_irq(lcdc_dev->irq,lcdc_dev);
err3:
iounmap(lcdc_dev->reg_vir_base);
err2:
release_mem_region(lcdc_dev->reg_phy_base,resource_size(res));
err1:
kfree(screen);
err0:
platform_set_drvdata(pdev, NULL);
kfree(lcdc_dev);
return ret;

}
static int __devexit rk3066b_lcdc_remove(struct platform_device *pdev)
{
struct rk3066b_lcdc_device *lcdc_dev = platform_get_drvdata(pdev);
rk_fb_unregister(&(lcdc_dev->driver));
rk3066b_lcdc_deinit(lcdc_dev);
iounmap(lcdc_dev->reg_vir_base);
release_mem_region(lcdc_dev->reg_phy_base,lcdc_dev->len);
kfree(lcdc_dev->screen);
kfree(lcdc_dev);
return 0;
}

static void rk3066b_lcdc_shutdown(struct platform_device *pdev)
{
struct rk3066b_lcdc_device *lcdc_dev = platform_get_drvdata(pdev);
if(lcdc_dev->driver.cur_screen->standby) //standby the screen if necessary
      lcdc_dev->driver.cur_screen->standby(1);
if(lcdc_dev->driver.screen_ctr_info->io_disable) //power off the screen if necessary
      lcdc_dev->driver.screen_ctr_info->io_disable();
if(lcdc_dev->driver.cur_screen->sscreen_set) //turn off  lvds if necessary
      lcdc_dev->driver.cur_screen->sscreen_set(lcdc_dev->driver.cur_screen , 0);

rk3066b_lcdc_deinit(lcdc_dev);
rk_fb_unregister(&(lcdc_dev->driver));

/*iounmap(lcdc_dev->reg_vir_base);
release_mem_region(lcdc_dev->reg_phy_base,lcdc_dev->len);
kfree(lcdc_dev->screen);
kfree(lcdc_dev);*/
}

static struct platform_driver rk3066b_lcdc_driver = {
.probe       = rk3066b_lcdc_probe,
.remove       = __devexit_p(rk3066b_lcdc_remove),
.driver       = {
      .name = "rk30-lcdc",
      .owner = THIS_MODULE,
},
.suspend = rk3066b_lcdc_suspend,
.resume       = rk3066b_lcdc_resume,
.shutdown    = rk3066b_lcdc_shutdown,
};

static int __init rk3066b_lcdc_init(void)
{
return platform_driver_register(&rk3066b_lcdc_driver);
}

static void __exit rk3066b_lcdc_exit(void)
{
platform_driver_unregister(&rk3066b_lcdc_driver);
}

fs_initcall(rk3066b_lcdc_init);
module_exit(rk3066b_lcdc_exit);

wokaonima · 发表于 2015-7-29 10:36:50

牛叉啊。要是我也能看懂多好

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RK3066的LCD的驱动源码

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