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gerrit.cesnet.cz / github / trini / u-boot / 9c21df15474b9f722822a95d334796cd97b3448b / . / drivers / video / mvebu_lcd.c
blob: 86dae523c65510335a07e6fde71d1b4f3365b6eb [file] [log] [blame]
/*
* Video driver for Marvell Armada XP SoC
*
* Initialization of LCD interface and setup of SPLASH screen image
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <video_fb.h>
#include <linux/mbus.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#define MVEBU_LCD_WIN_CONTROL(w) (MVEBU_LCD_BASE + 0xf000 + ((w) << 4))
#define MVEBU_LCD_WIN_BASE(w) (MVEBU_LCD_BASE + 0xf004 + ((w) << 4))
#define MVEBU_LCD_WIN_REMAP(w) (MVEBU_LCD_BASE + 0xf00c + ((w) << 4))
#define MVEBU_LCD_CFG_DMA_START_ADDR_0 (MVEBU_LCD_BASE + 0x00cc)
#define MVEBU_LCD_CFG_DMA_START_ADDR_1 (MVEBU_LCD_BASE + 0x00dc)
#define MVEBU_LCD_CFG_GRA_START_ADDR0 (MVEBU_LCD_BASE + 0x00f4)
#define MVEBU_LCD_CFG_GRA_START_ADDR1 (MVEBU_LCD_BASE + 0x00f8)
#define MVEBU_LCD_CFG_GRA_PITCH (MVEBU_LCD_BASE + 0x00fc)
#define MVEBU_LCD_SPU_GRA_OVSA_HPXL_VLN (MVEBU_LCD_BASE + 0x0100)
#define MVEBU_LCD_SPU_GRA_HPXL_VLN (MVEBU_LCD_BASE + 0x0104)
#define MVEBU_LCD_SPU_GZM_HPXL_VLN (MVEBU_LCD_BASE + 0x0108)
#define MVEBU_LCD_SPU_HWC_OVSA_HPXL_VLN (MVEBU_LCD_BASE + 0x010c)
#define MVEBU_LCD_SPU_HWC_HPXL_VLN (MVEBU_LCD_BASE + 0x0110)
#define MVEBU_LCD_SPUT_V_H_TOTAL (MVEBU_LCD_BASE + 0x0114)
#define MVEBU_LCD_SPU_V_H_ACTIVE (MVEBU_LCD_BASE + 0x0118)
#define MVEBU_LCD_SPU_H_PORCH (MVEBU_LCD_BASE + 0x011c)
#define MVEBU_LCD_SPU_V_PORCH (MVEBU_LCD_BASE + 0x0120)
#define MVEBU_LCD_SPU_BLANKCOLOR (MVEBU_LCD_BASE + 0x0124)
#define MVEBU_LCD_SPU_ALPHA_COLOR1 (MVEBU_LCD_BASE + 0x0128)
#define MVEBU_LCD_SPU_ALPHA_COLOR2 (MVEBU_LCD_BASE + 0x012c)
#define MVEBU_LCD_SPU_COLORKEY_Y (MVEBU_LCD_BASE + 0x0130)
#define MVEBU_LCD_SPU_COLORKEY_U (MVEBU_LCD_BASE + 0x0134)
#define MVEBU_LCD_SPU_COLORKEY_V (MVEBU_LCD_BASE + 0x0138)
#define MVEBU_LCD_CFG_RDREG4F (MVEBU_LCD_BASE + 0x013c)
#define MVEBU_LCD_SPU_SPI_RXDATA (MVEBU_LCD_BASE + 0x0140)
#define MVEBU_LCD_SPU_ISA_RXDATA (MVEBU_LCD_BASE + 0x0144)
#define MVEBU_LCD_SPU_DBG_ISA (MVEBU_LCD_BASE + 0x0148)
#define MVEBU_LCD_SPU_HWC_RDDAT (MVEBU_LCD_BASE + 0x0158)
#define MVEBU_LCD_SPU_GAMMA_RDDAT (MVEBU_LCD_BASE + 0x015c)
#define MVEBU_LCD_SPU_PALETTE_RDDAT (MVEBU_LCD_BASE + 0x0160)
#define MVEBU_LCD_SPU_IOPAD_IN (MVEBU_LCD_BASE + 0x0178)
#define MVEBU_LCD_FRAME_COUNT (MVEBU_LCD_BASE + 0x017c)
#define MVEBU_LCD_SPU_DMA_CTRL0 (MVEBU_LCD_BASE + 0x0190)
#define MVEBU_LCD_SPU_DMA_CTRL1 (MVEBU_LCD_BASE + 0x0194)
#define MVEBU_LCD_SPU_SRAM_CTRL (MVEBU_LCD_BASE + 0x0198)
#define MVEBU_LCD_SPU_SRAM_WRDAT (MVEBU_LCD_BASE + 0x019c)
#define MVEBU_LCD_SPU_SRAM_PARA0 (MVEBU_LCD_BASE + 0x01a0)
#define MVEBU_LCD_SPU_SRAM_PARA1 (MVEBU_LCD_BASE + 0x01a4)
#define MVEBU_LCD_CFG_SCLK_DIV (MVEBU_LCD_BASE + 0x01a8)
#define MVEBU_LCD_SPU_CONTRAST (MVEBU_LCD_BASE + 0x01ac)
#define MVEBU_LCD_SPU_SATURATION (MVEBU_LCD_BASE + 0x01b0)
#define MVEBU_LCD_SPU_CBSH_HUE (MVEBU_LCD_BASE + 0x01b4)
#define MVEBU_LCD_SPU_DUMB_CTRL (MVEBU_LCD_BASE + 0x01b8)
#define MVEBU_LCD_SPU_IOPAD_CONTROL (MVEBU_LCD_BASE + 0x01bc)
#define MVEBU_LCD_SPU_IRQ_ENA_2 (MVEBU_LCD_BASE + 0x01d8)
#define MVEBU_LCD_SPU_IRQ_ISR_2 (MVEBU_LCD_BASE + 0x01dc)
#define MVEBU_LCD_SPU_IRQ_ENA (MVEBU_LCD_BASE + 0x01c0)
#define MVEBU_LCD_SPU_IRQ_ISR (MVEBU_LCD_BASE + 0x01c4)
#define MVEBU_LCD_ADLL_CTRL (MVEBU_LCD_BASE + 0x01c8)
#define MVEBU_LCD_CLK_DIS (MVEBU_LCD_BASE + 0x01cc)
#define MVEBU_LCD_VGA_HVSYNC_DELAY (MVEBU_LCD_BASE + 0x01d4)
#define MVEBU_LCD_CLK_CFG_0 (MVEBU_LCD_BASE + 0xf0a0)
#define MVEBU_LCD_CLK_CFG_1 (MVEBU_LCD_BASE + 0xf0a4)
#define MVEBU_LCD_LVDS_CLK_CFG (MVEBU_LCD_BASE + 0xf0ac)
#define MVEBU_LVDS_PADS_REG (MVEBU_SYSTEM_REG_BASE + 0xf0)
/* Setup Mbus Bridge Windows for LCD */
static void mvebu_lcd_conf_mbus_registers(void)
{
const struct mbus_dram_target_info *dram;
int i;
dram = mvebu_mbus_dram_info();
/* Disable windows, set size/base/remap to 0 */
for (i = 0; i < 6; i++) {
writel(0, MVEBU_LCD_WIN_CONTROL(i));
writel(0, MVEBU_LCD_WIN_BASE(i));
writel(0, MVEBU_LCD_WIN_REMAP(i));
}
/* Write LCD bridge window registers */
for (i = 0; i < dram->num_cs; i++) {
const struct mbus_dram_window *cs = dram->cs + i;
writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1,
MVEBU_LCD_WIN_CONTROL(i));
writel(cs->base & 0xffff0000, MVEBU_LCD_WIN_BASE(i));
}
}
/* Initialize LCD registers */
int mvebu_lcd_register_init(struct mvebu_lcd_info *lcd_info)
{
/* Local variable for easier handling */
int x = lcd_info->x_res;
int y = lcd_info->y_res;
u32 val;
/* Setup Mbus Bridge Windows */
mvebu_lcd_conf_mbus_registers();
/*
* Set LVDS Pads Control Register
* wr 0 182F0 FFE00000
*/
clrbits_le32(MVEBU_LVDS_PADS_REG, 0x1f << 16);
/*
* Set the LCD_CFG_GRA_START_ADDR0/1 Registers
* This is supposed to point to the "physical" memory at memory
* end (currently 1GB-64MB but also may be 2GB-64MB).
* See also the Window 0 settings!
*/
writel(lcd_info->fb_base, MVEBU_LCD_CFG_GRA_START_ADDR0);
writel(lcd_info->fb_base, MVEBU_LCD_CFG_GRA_START_ADDR1);
/*
* Set the LCD_CFG_GRA_PITCH Register
* Bits 31-28: Duty Cycle of Backlight. value/16=High (0x8=Mid Setting)
* Bits 25-16: Backlight divider from 32kHz Clock
* (here 16=0x10 for 1kHz)
* Bits 15-00: Line Length in Bytes
* 240*2 (for RGB1555)=480=0x1E0
*/
writel(0x80100000 + 2 * x, MVEBU_LCD_CFG_GRA_PITCH);
/*
* Set the LCD_SPU_GRA_OVSA_HPXL_VLN Register
* Bits 31-16: Vertical start of graphical overlay on screen
* Bits 15-00: Horizontal start of graphical overlay on screen
*/
writel(0x00000000, MVEBU_LCD_SPU_GRA_OVSA_HPXL_VLN);
/*
* Set the LCD_SPU_GRA_HPXL_VLN Register
* Bits 31-16: Vertical size of graphical overlay 320=0x140
* Bits 15-00: Horizontal size of graphical overlay 240=0xF0
* Values before zooming
*/
writel((y << 16) | x, MVEBU_LCD_SPU_GRA_HPXL_VLN);
/*
* Set the LCD_SPU_GZM_HPXL_VLN Register
* Bits 31-16: Vertical size of graphical overlay 320=0x140
* Bits 15-00: Horizontal size of graphical overlay 240=0xF0
* Values after zooming
*/
writel((y << 16) | x, MVEBU_LCD_SPU_GZM_HPXL_VLN);
/*
* Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register
* Bits 31-16: Vertical position of HW Cursor 320=0x140
* Bits 15-00: Horizontal position of HW Cursor 240=0xF0
*/
writel((y << 16) | x, MVEBU_LCD_SPU_HWC_OVSA_HPXL_VLN);
/*
* Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register
* Bits 31-16: Vertical size of HW Cursor
* Bits 15-00: Horizontal size of HW Cursor
*/
writel(0x00000000, MVEBU_LCD_SPU_HWC_HPXL_VLN);
/*
* Set the LCD_SPU_HWC_OVSA_HPXL_VLN Register
* Bits 31-16: Screen total vertical lines:
* VSYNC = 1
* Vertical Front Porch = 2
* Vertical Lines = 320
* Vertical Back Porch = 2
* SUM = 325 = 0x0145
* Bits 15-00: Screen total horizontal pixels:
* HSYNC = 1
* Horizontal Front Porch = 44
* Horizontal Lines = 240
* Horizontal Back Porch = 2
* SUM = 287 = 0x011F
* Note: For the display the backporch is between SYNC and
* the start of the pixels.
* This is not certain for the Marvell (!?)
*/
val = ((y + lcd_info->y_fp + lcd_info->y_bp + 1) << 16) |
(x + lcd_info->x_fp + lcd_info->x_bp + 1);
writel(val, MVEBU_LCD_SPUT_V_H_TOTAL);
/*
* Set the LCD_SPU_V_H_ACTIVE Register
* Bits 31-16: Screen active vertical lines 320=0x140
* Bits 15-00: Screen active horizontakl pixels 240=0x00F0
*/
writel((y << 16) | x, MVEBU_LCD_SPU_V_H_ACTIVE);
/*
* Set the LCD_SPU_H_PORCH Register
* Bits 31-16: Screen horizontal backporch 44=0x2c
* Bits 15-00: Screen horizontal frontporch 2=0x02
* Note: The terms "front" and "back" for the Marvell seem to be
* exactly opposite to the display.
*/
writel((lcd_info->x_fp << 16) | lcd_info->x_bp, MVEBU_LCD_SPU_H_PORCH);
/*
* Set the LCD_SPU_V_PORCH Register
* Bits 31-16: Screen vertical backporch 2=0x02
* Bits 15-00: Screen vertical frontporch 2=0x02
* Note: The terms "front" and "back" for the Marvell seem to be exactly
* opposite to the display.
*/
writel((lcd_info->y_fp << 16) | lcd_info->y_bp, MVEBU_LCD_SPU_V_PORCH);
/*
* Set the LCD_SPU_BLANKCOLOR Register
* This should be black = 0
* For tests this is magenta=00FF00FF
*/
writel(0x00FF00FF, MVEBU_LCD_SPU_BLANKCOLOR);
/*
* Registers in the range of 0x0128 to 0x012C are colors for the cursor
* Registers in the range of 0x0130 to 0x0138 are colors for video
* color keying
*/
/*
* Set the LCD_SPU_RDREG4F Register
* Bits 31-12: Reservd
* Bit 11: SRAM Wait
* Bit 10: Smart display fast TX (must be 1)
* Bit 9: DMA Arbitration Video/Graphics overlay: 0=interleaved
* Bit 8: FIFO watermark for DMA: 0=disable
* Bits 07-00: Empty 8B FIFO entries to trigger DMA, default=0x80
*/
writel(0x00000780, MVEBU_LCD_CFG_RDREG4F);
/*
* Set the LCD_SPU_DMACTRL 0 Register
* Bit 31: Disable overlay blending 1=disable
* Bit 30: Gamma correction enable, 0=disable
* Bit 29: Video Contrast/Saturation/Hue Adjust enable, 0=disable
* Bit 28: Color palette enable, 0=disable
* Bit 27: DMA AXI Arbiter, 1=default
* Bit 26: HW Cursor 1-bit mode
* Bit 25: HW Cursor or 1- or 2-bit mode
* Bit 24: HW Cursor enabled, 0=disable
* Bits 23-20: Graphics Memory Color Format: 0x1=RGB1555
* Bits 19-16: Video Memory Color Format: 0x1=RGB1555
* Bit 15: Memory Toggle between frame 0 and 1: 0=disable
* Bit 14: Graphics horizontal scaling enable: 0=disable
* Bit 13: Graphics test mode: 0=disable
* Bit 12: Graphics SWAP R and B: 0=disable
* Bit 11: Graphics SWAP U and V: 0=disable
* Bit 10: Graphics SWAP Y and U/V: 0=disable
* Bit 09: Graphic YUV to RGB Conversion: 0=disable
* Bit 08: Graphic Transfer: 1=enable
* Bit 07: Memory Toggle: 0=disable
* Bit 06: Video horizontal scaling enable: 0=disable
* Bit 05: Video test mode: 0=disable
* Bit 04: Video SWAP R and B: 0=disable
* Bit 03: Video SWAP U and V: 0=disable
* Bit 02: Video SWAP Y and U/V: 0=disable
* Bit 01: Video YUV to RGB Conversion: 0=disable
* Bit 00: Video Transfer: 0=disable
*/
writel(0x88111100, MVEBU_LCD_SPU_DMA_CTRL0);
/*
* Set the LCD_SPU_DMA_CTRL1 Register
* Bit 31: Manual DMA Trigger = 0
* Bits 30-28: DMA Trigger Source: 0x2 VSYNC
* Bit 28: VSYNC_INV: 0=Rising Edge, 1=Falling Edge
* Bits 26-24: Color Key Mode: 0=disable
* Bit 23: Fill low bits: 0=fill with zeroes
* Bit 22: Reserved
* Bit 21: Gated Clock: 0=disable
* Bit 20: Power Save enable: 0=disable
* Bits 19-18: Reserved
* Bits 17-16: Configure Video/Graphic Path: 0x1: Graphic path alpha.
* Bits 15-08: Configure Alpha: 0x00.
* Bits 07-00: Reserved.
*/
writel(0x20010000, MVEBU_LCD_SPU_DMA_CTRL1);
/*
* Set the LCD_SPU_SRAM_CTRL Register
* Reset to default = 0000C000
* Bits 15-14: SRAM control: init=0x3, Read=0, Write=2
* Bits 11-08: SRAM address ID: 0=gamma_yr, 1=gammy_ug, 2=gamma_vb,
* 3=palette, 15=cursor
*/
writel(0x0000C000, MVEBU_LCD_SPU_SRAM_CTRL);
/*
* LCD_SPU_SRAM_WRDAT register: 019C
* LCD_SPU_SRAM_PARA0 register: 01A0
* LCD_SPU_SRAM_PARA1 register: 01A4 - Cursor control/Power settings
*/
writel(0x00000000, MVEBU_LCD_SPU_SRAM_PARA1);
/* Clock settings in the at 01A8 and in the range F0A0 see below */
/*
* Set LCD_SPU_CONTRAST
* Bits 31-16: Brightness sign ext. 8-bit value +255 to -255: default=0
* Bits 15-00: Contrast sign ext. 8-bit value +255 to -255: default=0
*/
writel(0x00000000, MVEBU_LCD_SPU_CONTRAST);
/*
* Set LCD_SPU_SATURATION
* Bits 31-16: Multiplier signed 4.12 fixed point value
* Bits 15-00: Saturation signed 4.12 fixed point value
*/
writel(0x10001000, MVEBU_LCD_SPU_SATURATION);
/*
* Set LCD_SPU_HUE
* Bits 31-16: Sine signed 2.14 fixed point value
* Bits 15-00: Cosine signed 2.14 fixed point value
*/
writel(0x00000000, MVEBU_LCD_SPU_CBSH_HUE);
/*
* Set LCD_SPU_DUMB_CTRL
* Bits 31-28: LCD Type: 3=18 bit RGB | 6=24 bit RGB888
* Bits 27-12: Reserved
* Bit 11: LCD DMA Pipeline Enable: 1=Enable
* Bits 10-09: Reserved
* Bit 8: LCD GPIO pin (??)
* Bit 7: Reverse RGB
* Bit 6: Invert composite blank signal DE/EN (??)
* Bit 5: Invert composite sync signal
* Bit 4: Invert Pixel Valid Enable DE/EN (??)
* Bit 3: Invert VSYNC
* Bit 2: Invert HSYNC
* Bit 1: Invert Pixel Clock
* Bit 0: Enable LCD Panel: 1=Enable
* Question: Do we have to disable Smart and Dumb LCD
* and separately enable LVDS?
*/
writel(0x6000080F, MVEBU_LCD_SPU_DUMB_CTRL);
/*
* Set LCD_SPU_IOPAD_CTRL
* Bits 31-20: Reserved
* Bits 19-18: Vertical Interpolation: 0=Disable
* Bits 17-16: Reserved
* Bit 15: Graphics Vertical Mirror enable: 0=disable
* Bit 14: Reserved
* Bit 13: Video Vertical Mirror enable: 0=disable
* Bit 12: Reserved
* Bit 11: Command Vertical Mirror enable: 0=disable
* Bit 10: Reserved
* Bits 09-08: YUV to RGB Color space conversion: 0 (Not used)
* Bits 07-04: AXI Bus Master: 0x4: no crossing of 4k boundary,
* 128 Bytes burst
* Bits 03-00: LCD pins: ??? 0=24-bit Dump panel ??
*/
writel(0x000000C0, MVEBU_LCD_SPU_IOPAD_CONTROL);
/*
* Set SUP_IRQ_ENA_2: Disable all interrupts
*/
writel(0x00000000, MVEBU_LCD_SPU_IRQ_ENA_2);
/*
* Set SUP_IRQ_ENA: Disable all interrupts.
*/
writel(0x00000000, MVEBU_LCD_SPU_IRQ_ENA);
/*
* Set up ADDL Control Register
* Bits 31-29: 0x0 = Fastest Delay Line (default)
* 0x3 = Slowest Delay Line (default)
* Bit 28: Calibration done status.
* Bit 27: Reserved
* Bit 26: Set Pixel Clock to ADDL output
* Bit 25: Reduce CAL Enable
* Bits 24-22: Manual calibration value.
* Bit 21: Manual calibration enable.
* Bit 20: Restart Auto Cal
* Bits 19-16: Calibration Threshold voltage, default= 0x2
* Bite 15-14: Reserved
* Bits 13-11: Divisor for ADDL Clock: 0x1=/2, 0x3=/8, 0x5=/16
* Bit 10: Power Down ADDL module, default = 1!
* Bits 09-08: Test point configuration: 0x2=Bias, 0x3=High-z
* Bit 07: Reset ADDL
* Bit 06: Invert ADLL Clock
* Bits 05-00: Delay taps, 0x3F=Half Cycle, 0x00=No delay
* Note: ADLL is used for a VGA interface with DAC - not used here
*/
writel(0x00000000, MVEBU_LCD_ADLL_CTRL);
/*
* Set the LCD_CLK_DIS Register:
* Bits 3 and 4 must be 1
*/
writel(0x00000018, MVEBU_LCD_CLK_DIS);
/*
* Set the LCD_VGA_HSYNC/VSYNC Delay Register:
* Bits 03-00: Sets the delay for the HSYNC and VSYNC signals
*/
writel(0x00000000, MVEBU_LCD_VGA_HVSYNC_DELAY);
/*
* Clock registers
* See page 475 in the functional spec.
*/
/* Step 1 and 2: Disable the PLL */
/*
* Disable PLL, see "LCD Clock Configuration 1 Register" below
*/
writel(0x8FF40007, MVEBU_LCD_CLK_CFG_1);
/*
* Powerdown, see "LCD Clock Configuration 0 Register" below
*/
writel(0x94000174, MVEBU_LCD_CLK_CFG_0);
/*
* Set the LCD_CFG_SCLK_DIV Register
* This is set fix to 0x40000001 for the LVDS output:
* Bits 31-30: SCLCK Source: 0=AXIBus, 1=AHBus, 2=PLLDivider0
* Bits 15-01: Clock Divider: Bypass for LVDS=0x0001
* See page 475 in section 28.5.
*/
writel(0x80000001, MVEBU_LCD_CFG_SCLK_DIV);
/*
* Set the LCD Clock Configuration 0 Register:
* Bit 31: Powerdown: 0=Power up
* Bits 30-29: Reserved
* Bits 28-26: PLL_KDIV: This encodes K
* K=16 => 0x5
* Bits 25-17: PLL_MDIV: This is M-1:
* M=1 => 0x0
* Bits 16-13: VCO band: 0x1 for 700-920MHz
* Bits 12-04: PLL_NDIV: This is N-1 and corresponds to R1_CTRL!
* N=28=0x1C => 0x1B
* Bits 03-00: R1_CTRL (for N=28 => 0x4)
*/
writel(0x940021B4, MVEBU_LCD_CLK_CFG_0);
/*
* Set the LCD Clock Configuration 1 Register:
* Bits 31-19: Reserved
* Bit 18: Select PLL: Core PLL, 1=Dedicated PPL
* Bit 17: Clock Output Enable: 0=disable, 1=enable
* Bit 16: Select RefClk: 0=RefClk (25MHz), 1=External
* Bit 15: Half-Div, Device Clock by DIV+0.5*Half-Dev
* Bits 14-13: Reserved
* Bits 12-00: PLL Full Divider [Note: Assumed to be the Post-Divider
* M' for LVDS=7!]
*/
writel(0x8FF40007, MVEBU_LCD_CLK_CFG_1);
/*
* Set the LVDS Clock Configuration Register:
* Bit 31: Clock Gating for the input clock to the LVDS
* Bit 30: LVDS Serializer enable: 1=Enabled
* Bits 29-11: Reserved
* Bit 11-08: LVDS Clock delay: 0x02 (default): by 2 pixel clock/7
* Bits 07-02: Reserved
* Bit 01: 24bbp Option: 0=Option_1,1=Option2
* Bit 00: 1=24bbp Panel: 0=18bpp Panel
* Note: Bits 0 and must be verified with the help of the
* Interface/display
*/
writel(0xC0000201, MVEBU_LCD_LVDS_CLK_CFG);
/*
* Power up PLL (Clock Config 0)
*/
writel(0x140021B4, MVEBU_LCD_CLK_CFG_0);
/* wait 10 ms */
mdelay(10);
/*
* Enable PLL (Clock Config 1)
*/
writel(0x8FF60007, MVEBU_LCD_CLK_CFG_1);
return 0;
}
int __weak board_video_init(void)
{
return -1;
}
void *video_hw_init(void)
{
static GraphicDevice mvebufb;
GraphicDevice *pGD = &mvebufb;
u32 val;
/*
* The board code needs to call mvebu_lcd_register_init()
* in its board_video_init() implementation, with the board
* specific parameters for its LCD.
*/
if (board_video_init() || !readl(MVEBU_LCD_CFG_GRA_START_ADDR0))
return NULL;
/* Provide the necessary values for the U-Boot video IF */
val = readl(MVEBU_LCD_SPU_V_H_ACTIVE);
pGD->winSizeY = val >> 16;
pGD->winSizeX = val & 0x0000ffff;
pGD->gdfBytesPP = 2;
pGD->gdfIndex = GDF_15BIT_555RGB;
pGD->frameAdrs = readl(MVEBU_LCD_CFG_GRA_START_ADDR0);
debug("LCD: buffer at 0x%08x resolution %dx%d\n", pGD->frameAdrs,
pGD->winSizeX, pGD->winSizeY);
return pGD;
}