6b13f685e
김민수
BSP 최초 추가
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#include <common.h>
#include <malloc.h>
#include <video_fb.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/imx-common/dma.h>
#include "videomodes.h"
#define PS2KHZ(ps) (1000000000UL / (ps))
static GraphicDevice panel;
struct mxs_dma_desc desc;
__weak void mxsfb_system_setup(void)
{
}
static void mxs_lcd_init(GraphicDevice *panel,
struct ctfb_res_modes *mode, int bpp)
{
struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE;
uint32_t word_len = 0, bus_width = 0;
uint8_t valid_data = 0;
mxs_set_lcdclk(PS2KHZ(mode->pixclock));
mxs_reset_block(®s->hw_lcdif_ctrl_reg);
switch (bpp) {
case 24:
word_len = LCDIF_CTRL_WORD_LENGTH_24BIT;
bus_width = LCDIF_CTRL_LCD_DATABUS_WIDTH_24BIT;
valid_data = 0x7;
break;
case 18:
word_len = LCDIF_CTRL_WORD_LENGTH_24BIT;
bus_width = LCDIF_CTRL_LCD_DATABUS_WIDTH_18BIT;
valid_data = 0x7;
break;
case 16:
word_len = LCDIF_CTRL_WORD_LENGTH_16BIT;
bus_width = LCDIF_CTRL_LCD_DATABUS_WIDTH_16BIT;
valid_data = 0xf;
break;
case 8:
word_len = LCDIF_CTRL_WORD_LENGTH_8BIT;
bus_width = LCDIF_CTRL_LCD_DATABUS_WIDTH_8BIT;
valid_data = 0xf;
break;
}
writel(bus_width | word_len | LCDIF_CTRL_DOTCLK_MODE |
LCDIF_CTRL_BYPASS_COUNT | LCDIF_CTRL_LCDIF_MASTER,
®s->hw_lcdif_ctrl);
writel(valid_data << LCDIF_CTRL1_BYTE_PACKING_FORMAT_OFFSET,
®s->hw_lcdif_ctrl1);
mxsfb_system_setup();
writel((mode->yres << LCDIF_TRANSFER_COUNT_V_COUNT_OFFSET) | mode->xres,
®s->hw_lcdif_transfer_count);
writel(LCDIF_VDCTRL0_ENABLE_PRESENT | LCDIF_VDCTRL0_ENABLE_POL |
LCDIF_VDCTRL0_VSYNC_PERIOD_UNIT |
LCDIF_VDCTRL0_VSYNC_PULSE_WIDTH_UNIT |
mode->vsync_len, ®s->hw_lcdif_vdctrl0);
writel(mode->upper_margin + mode->lower_margin +
mode->vsync_len + mode->yres,
®s->hw_lcdif_vdctrl1);
writel((mode->hsync_len << LCDIF_VDCTRL2_HSYNC_PULSE_WIDTH_OFFSET) |
(mode->left_margin + mode->right_margin +
mode->hsync_len + mode->xres),
®s->hw_lcdif_vdctrl2);
writel(((mode->left_margin + mode->hsync_len) <<
LCDIF_VDCTRL3_HORIZONTAL_WAIT_CNT_OFFSET) |
(mode->upper_margin + mode->vsync_len),
®s->hw_lcdif_vdctrl3);
writel((0 << LCDIF_VDCTRL4_DOTCLK_DLY_SEL_OFFSET) | mode->xres,
®s->hw_lcdif_vdctrl4);
writel(panel->frameAdrs, ®s->hw_lcdif_cur_buf);
writel(panel->frameAdrs, ®s->hw_lcdif_next_buf);
writel(LCDIF_CTRL1_FIFO_CLEAR, ®s->hw_lcdif_ctrl1_set);
#ifndef CONFIG_VIDEO_MXS_MODE_SYSTEM
setbits_le32(®s->hw_lcdif_vdctrl4, LCDIF_VDCTRL4_SYNC_SIGNALS_ON);
#endif
writel(LCDIF_CTRL1_FIFO_CLEAR, ®s->hw_lcdif_ctrl1_clr);
writel(LCDIF_CTRL_RUN, ®s->hw_lcdif_ctrl_set);
}
void *video_hw_init(void)
{
int bpp = -1;
char *penv;
void *fb;
struct ctfb_res_modes mode;
puts("Video: ");
penv = getenv("videomode");
if (!penv) {
puts("MXSFB: 'videomode' variable not set!
");
return NULL;
}
bpp = video_get_params(&mode, penv);
sprintf(panel.modeIdent, "%dx%dx%d",
mode.xres, mode.yres, bpp);
panel.winSizeX = mode.xres;
panel.winSizeY = mode.yres;
panel.plnSizeX = mode.xres;
panel.plnSizeY = mode.yres;
switch (bpp) {
case 24:
case 18:
panel.gdfBytesPP = 4;
panel.gdfIndex = GDF_32BIT_X888RGB;
break;
case 16:
panel.gdfBytesPP = 2;
panel.gdfIndex = GDF_16BIT_565RGB;
break;
case 8:
panel.gdfBytesPP = 1;
panel.gdfIndex = GDF__8BIT_INDEX;
break;
default:
printf("MXSFB: Invalid BPP specified! (bpp = %i)
", bpp);
return NULL;
}
panel.memSize = mode.xres * mode.yres * panel.gdfBytesPP;
fb = memalign(ARCH_DMA_MINALIGN,
roundup(panel.memSize, ARCH_DMA_MINALIGN));
if (!fb) {
printf("MXSFB: Error allocating framebuffer!
");
return NULL;
}
memset(fb, 0, panel.memSize);
panel.frameAdrs = (u32)fb;
printf("%s
", panel.modeIdent);
mxs_lcd_init(&panel, &mode, bpp);
#ifdef CONFIG_VIDEO_MXS_MODE_SYSTEM
struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE;
memset(&desc, 0, sizeof(struct mxs_dma_desc));
desc.address = (dma_addr_t)&desc;
desc.cmd.data = MXS_DMA_DESC_COMMAND_NO_DMAXFER | MXS_DMA_DESC_CHAIN |
MXS_DMA_DESC_WAIT4END |
(1 << MXS_DMA_DESC_PIO_WORDS_OFFSET);
desc.cmd.pio_words[0] = readl(®s->hw_lcdif_ctrl) | LCDIF_CTRL_RUN;
desc.cmd.next = (uint32_t)&desc.cmd;
mxs_dma_circ_start(MXS_DMA_CHANNEL_AHB_APBH_LCDIF, &desc);
#endif
return (void *)&panel;
}
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