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u-boot-brain/drivers/video/mx3fb.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2009
* Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
* Copyright (C) 2011
* HALE electronic GmbH, <helmut.raiger@hale.at>
*/
#include <common.h>
#include <malloc.h>
#include <video_fb.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <linux/errno.h>
#include <asm/io.h>
#include "videomodes.h"
/* this might need panel specific set-up as-well */
#define IF_CONF 0
/* -------------- controller specific stuff -------------- */
/* IPU DMA Controller channel definitions. */
enum ipu_channel {
IDMAC_IC_0 = 0, /* IC (encoding task) to memory */
IDMAC_IC_1 = 1, /* IC (viewfinder task) to memory */
IDMAC_ADC_0 = 1,
IDMAC_IC_2 = 2,
IDMAC_ADC_1 = 2,
IDMAC_IC_3 = 3,
IDMAC_IC_4 = 4,
IDMAC_IC_5 = 5,
IDMAC_IC_6 = 6,
IDMAC_IC_7 = 7, /* IC (sensor data) to memory */
IDMAC_IC_8 = 8,
IDMAC_IC_9 = 9,
IDMAC_IC_10 = 10,
IDMAC_IC_11 = 11,
IDMAC_IC_12 = 12,
IDMAC_IC_13 = 13,
IDMAC_SDC_0 = 14, /* Background synchronous display data */
IDMAC_SDC_1 = 15, /* Foreground data (overlay) */
IDMAC_SDC_2 = 16,
IDMAC_SDC_3 = 17,
IDMAC_ADC_2 = 18,
IDMAC_ADC_3 = 19,
IDMAC_ADC_4 = 20,
IDMAC_ADC_5 = 21,
IDMAC_ADC_6 = 22,
IDMAC_ADC_7 = 23,
IDMAC_PF_0 = 24,
IDMAC_PF_1 = 25,
IDMAC_PF_2 = 26,
IDMAC_PF_3 = 27,
IDMAC_PF_4 = 28,
IDMAC_PF_5 = 29,
IDMAC_PF_6 = 30,
IDMAC_PF_7 = 31,
};
/* More formats can be copied from the Linux driver if needed */
enum pixel_fmt {
/* 2 bytes */
IPU_PIX_FMT_RGB565,
IPU_PIX_FMT_RGB666,
IPU_PIX_FMT_BGR666,
/* 3 bytes */
IPU_PIX_FMT_RGB24,
};
struct pixel_fmt_cfg {
u32 b0;
u32 b1;
u32 b2;
u32 acc;
};
static struct pixel_fmt_cfg fmt_cfg[] = {
[IPU_PIX_FMT_RGB24] = {
0x1600AAAA, 0x00E05555, 0x00070000, 3,
},
[IPU_PIX_FMT_RGB666] = {
0x0005000F, 0x000B000F, 0x0011000F, 1,
},
[IPU_PIX_FMT_BGR666] = {
0x0011000F, 0x000B000F, 0x0005000F, 1,
},
[IPU_PIX_FMT_RGB565] = {
0x0004003F, 0x000A000F, 0x000F003F, 1,
}
};
enum ipu_panel {
IPU_PANEL_SHARP_TFT,
IPU_PANEL_TFT,
};
/* IPU Common registers */
/* IPU_CONF and its bits already defined in imx-regs.h */
#define IPU_CHA_BUF0_RDY (0x04 + IPU_BASE)
#define IPU_CHA_BUF1_RDY (0x08 + IPU_BASE)
#define IPU_CHA_DB_MODE_SEL (0x0C + IPU_BASE)
#define IPU_CHA_CUR_BUF (0x10 + IPU_BASE)
#define IPU_FS_PROC_FLOW (0x14 + IPU_BASE)
#define IPU_FS_DISP_FLOW (0x18 + IPU_BASE)
#define IPU_TASKS_STAT (0x1C + IPU_BASE)
#define IPU_IMA_ADDR (0x20 + IPU_BASE)
#define IPU_IMA_DATA (0x24 + IPU_BASE)
#define IPU_INT_CTRL_1 (0x28 + IPU_BASE)
#define IPU_INT_CTRL_2 (0x2C + IPU_BASE)
#define IPU_INT_CTRL_3 (0x30 + IPU_BASE)
#define IPU_INT_CTRL_4 (0x34 + IPU_BASE)
#define IPU_INT_CTRL_5 (0x38 + IPU_BASE)
#define IPU_INT_STAT_1 (0x3C + IPU_BASE)
#define IPU_INT_STAT_2 (0x40 + IPU_BASE)
#define IPU_INT_STAT_3 (0x44 + IPU_BASE)
#define IPU_INT_STAT_4 (0x48 + IPU_BASE)
#define IPU_INT_STAT_5 (0x4C + IPU_BASE)
#define IPU_BRK_CTRL_1 (0x50 + IPU_BASE)
#define IPU_BRK_CTRL_2 (0x54 + IPU_BASE)
#define IPU_BRK_STAT (0x58 + IPU_BASE)
#define IPU_DIAGB_CTRL (0x5C + IPU_BASE)
/* Image Converter Registers */
#define IC_CONF (0x88 + IPU_BASE)
#define IC_PRP_ENC_RSC (0x8C + IPU_BASE)
#define IC_PRP_VF_RSC (0x90 + IPU_BASE)
#define IC_PP_RSC (0x94 + IPU_BASE)
#define IC_CMBP_1 (0x98 + IPU_BASE)
#define IC_CMBP_2 (0x9C + IPU_BASE)
#define PF_CONF (0xA0 + IPU_BASE)
#define IDMAC_CONF (0xA4 + IPU_BASE)
#define IDMAC_CHA_EN (0xA8 + IPU_BASE)
#define IDMAC_CHA_PRI (0xAC + IPU_BASE)
#define IDMAC_CHA_BUSY (0xB0 + IPU_BASE)
/* Image Converter Register bits */
#define IC_CONF_PRPENC_EN 0x00000001
#define IC_CONF_PRPENC_CSC1 0x00000002
#define IC_CONF_PRPENC_ROT_EN 0x00000004
#define IC_CONF_PRPVF_EN 0x00000100
#define IC_CONF_PRPVF_CSC1 0x00000200
#define IC_CONF_PRPVF_CSC2 0x00000400
#define IC_CONF_PRPVF_CMB 0x00000800
#define IC_CONF_PRPVF_ROT_EN 0x00001000
#define IC_CONF_PP_EN 0x00010000
#define IC_CONF_PP_CSC1 0x00020000
#define IC_CONF_PP_CSC2 0x00040000
#define IC_CONF_PP_CMB 0x00080000
#define IC_CONF_PP_ROT_EN 0x00100000
#define IC_CONF_IC_GLB_LOC_A 0x10000000
#define IC_CONF_KEY_COLOR_EN 0x20000000
#define IC_CONF_RWS_EN 0x40000000
#define IC_CONF_CSI_MEM_WR_EN 0x80000000
/* SDC Registers */
#define SDC_COM_CONF (0xB4 + IPU_BASE)
#define SDC_GW_CTRL (0xB8 + IPU_BASE)
#define SDC_FG_POS (0xBC + IPU_BASE)
#define SDC_BG_POS (0xC0 + IPU_BASE)
#define SDC_CUR_POS (0xC4 + IPU_BASE)
#define SDC_PWM_CTRL (0xC8 + IPU_BASE)
#define SDC_CUR_MAP (0xCC + IPU_BASE)
#define SDC_HOR_CONF (0xD0 + IPU_BASE)
#define SDC_VER_CONF (0xD4 + IPU_BASE)
#define SDC_SHARP_CONF_1 (0xD8 + IPU_BASE)
#define SDC_SHARP_CONF_2 (0xDC + IPU_BASE)
/* Register bits */
#define SDC_COM_TFT_COLOR 0x00000001UL
#define SDC_COM_FG_EN 0x00000010UL
#define SDC_COM_GWSEL 0x00000020UL
#define SDC_COM_GLB_A 0x00000040UL
#define SDC_COM_KEY_COLOR_G 0x00000080UL
#define SDC_COM_BG_EN 0x00000200UL
#define SDC_COM_SHARP 0x00001000UL
#define SDC_V_SYNC_WIDTH_L 0x00000001UL
/* Display Interface registers */
#define DI_DISP_IF_CONF (0x0124 + IPU_BASE)
#define DI_DISP_SIG_POL (0x0128 + IPU_BASE)
#define DI_SER_DISP1_CONF (0x012C + IPU_BASE)
#define DI_SER_DISP2_CONF (0x0130 + IPU_BASE)
#define DI_HSP_CLK_PER (0x0134 + IPU_BASE)
#define DI_DISP0_TIME_CONF_1 (0x0138 + IPU_BASE)
#define DI_DISP0_TIME_CONF_2 (0x013C + IPU_BASE)
#define DI_DISP0_TIME_CONF_3 (0x0140 + IPU_BASE)
#define DI_DISP1_TIME_CONF_1 (0x0144 + IPU_BASE)
#define DI_DISP1_TIME_CONF_2 (0x0148 + IPU_BASE)
#define DI_DISP1_TIME_CONF_3 (0x014C + IPU_BASE)
#define DI_DISP2_TIME_CONF_1 (0x0150 + IPU_BASE)
#define DI_DISP2_TIME_CONF_2 (0x0154 + IPU_BASE)
#define DI_DISP2_TIME_CONF_3 (0x0158 + IPU_BASE)
#define DI_DISP3_TIME_CONF (0x015C + IPU_BASE)
#define DI_DISP0_DB0_MAP (0x0160 + IPU_BASE)
#define DI_DISP0_DB1_MAP (0x0164 + IPU_BASE)
#define DI_DISP0_DB2_MAP (0x0168 + IPU_BASE)
#define DI_DISP0_CB0_MAP (0x016C + IPU_BASE)
#define DI_DISP0_CB1_MAP (0x0170 + IPU_BASE)
#define DI_DISP0_CB2_MAP (0x0174 + IPU_BASE)
#define DI_DISP1_DB0_MAP (0x0178 + IPU_BASE)
#define DI_DISP1_DB1_MAP (0x017C + IPU_BASE)
#define DI_DISP1_DB2_MAP (0x0180 + IPU_BASE)
#define DI_DISP1_CB0_MAP (0x0184 + IPU_BASE)
#define DI_DISP1_CB1_MAP (0x0188 + IPU_BASE)
#define DI_DISP1_CB2_MAP (0x018C + IPU_BASE)
#define DI_DISP2_DB0_MAP (0x0190 + IPU_BASE)
#define DI_DISP2_DB1_MAP (0x0194 + IPU_BASE)
#define DI_DISP2_DB2_MAP (0x0198 + IPU_BASE)
#define DI_DISP2_CB0_MAP (0x019C + IPU_BASE)
#define DI_DISP2_CB1_MAP (0x01A0 + IPU_BASE)
#define DI_DISP2_CB2_MAP (0x01A4 + IPU_BASE)
#define DI_DISP3_B0_MAP (0x01A8 + IPU_BASE)
#define DI_DISP3_B1_MAP (0x01AC + IPU_BASE)
#define DI_DISP3_B2_MAP (0x01B0 + IPU_BASE)
#define DI_DISP_ACC_CC (0x01B4 + IPU_BASE)
#define DI_DISP_LLA_CONF (0x01B8 + IPU_BASE)
#define DI_DISP_LLA_DATA (0x01BC + IPU_BASE)
/* DI_DISP_SIG_POL bits */
#define DI_D3_VSYNC_POL (1 << 28)
#define DI_D3_HSYNC_POL (1 << 27)
#define DI_D3_DRDY_SHARP_POL (1 << 26)
#define DI_D3_CLK_POL (1 << 25)
#define DI_D3_DATA_POL (1 << 24)
/* DI_DISP_IF_CONF bits */
#define DI_D3_CLK_IDLE (1 << 26)
#define DI_D3_CLK_SEL (1 << 25)
#define DI_D3_DATAMSK (1 << 24)
#define IOMUX_PADNUM_MASK 0x1ff
#define IOMUX_GPIONUM_SHIFT 9
#define IOMUX_GPIONUM_MASK (0xff << IOMUX_GPIONUM_SHIFT)
#define IOMUX_PIN(gpionum, padnum) ((padnum) & IOMUX_PADNUM_MASK)
#define IOMUX_MODE_L(pin, mode) IOMUX_MODE(((pin) + 0xc) ^ 3, mode)
struct chan_param_mem_planar {
/* Word 0 */
u32 xv:10;
u32 yv:10;
u32 xb:12;
u32 yb:12;
u32 res1:2;
u32 nsb:1;
u32 lnpb:6;
u32 ubo_l:11;
u32 ubo_h:15;
u32 vbo_l:17;
u32 vbo_h:9;
u32 res2:3;
u32 fw:12;
u32 fh_l:8;
u32 fh_h:4;
u32 res3:28;
/* Word 1 */
u32 eba0;
u32 eba1;
u32 bpp:3;
u32 sl:14;
u32 pfs:3;
u32 bam:3;
u32 res4:2;
u32 npb:6;
u32 res5:1;
u32 sat:2;
u32 res6:30;
} __attribute__ ((packed));
struct chan_param_mem_interleaved {
/* Word 0 */
u32 xv:10;
u32 yv:10;
u32 xb:12;
u32 yb:12;
u32 sce:1;
u32 res1:1;
u32 nsb:1;
u32 lnpb:6;
u32 sx:10;
u32 sy_l:1;
u32 sy_h:9;
u32 ns:10;
u32 sm:10;
u32 sdx_l:3;
u32 sdx_h:2;
u32 sdy:5;
u32 sdrx:1;
u32 sdry:1;
u32 sdr1:1;
u32 res2:2;
u32 fw:12;
u32 fh_l:8;
u32 fh_h:4;
u32 res3:28;
/* Word 1 */
u32 eba0;
u32 eba1;
u32 bpp:3;
u32 sl:14;
u32 pfs:3;
u32 bam:3;
u32 res4:2;
u32 npb:6;
u32 res5:1;
u32 sat:2;
u32 scc:1;
u32 ofs0:5;
u32 ofs1:5;
u32 ofs2:5;
u32 ofs3:5;
u32 wid0:3;
u32 wid1:3;
u32 wid2:3;
u32 wid3:3;
u32 dec_sel:1;
u32 res6:28;
} __attribute__ ((packed));
union chan_param_mem {
struct chan_param_mem_planar pp;
struct chan_param_mem_interleaved ip;
};
/* graphics setup */
static GraphicDevice panel;
static struct ctfb_res_modes *mode;
static struct ctfb_res_modes var_mode;
/*
* sdc_init_panel() - initialize a synchronous LCD panel.
* @width: width of panel in pixels.
* @height: height of panel in pixels.
* @di_setup: pixel format of the frame buffer
* @di_panel: either SHARP or normal TFT
* @return: 0 on success or negative error code on failure.
*/
static int sdc_init_panel(u16 width, u16 height,
enum pixel_fmt di_setup, enum ipu_panel di_panel)
{
u32 reg, div;
uint32_t old_conf;
int clock;
debug("%s(width=%d, height=%d)\n", __func__, width, height);
/* Init clocking, the IPU receives its clock from the hsp divder */
clock = mxc_get_clock(MXC_IPU_CLK);
if (clock < 0)
return -EACCES;
/* Init panel size and blanking periods */
reg = width + mode->left_margin + mode->right_margin - 1;
if (reg > 1023) {
printf("mx3fb: Display width too large, coerced to 1023!");
reg = 1023;
}
reg = ((mode->hsync_len - 1) << 26) | (reg << 16);
writel(reg, SDC_HOR_CONF);
reg = height + mode->upper_margin + mode->lower_margin - 1;
if (reg > 1023) {
printf("mx3fb: Display height too large, coerced to 1023!");
reg = 1023;
}
reg = ((mode->vsync_len - 1) << 26) | SDC_V_SYNC_WIDTH_L | (reg << 16);
writel(reg, SDC_VER_CONF);
switch (di_panel) {
case IPU_PANEL_SHARP_TFT:
writel(0x00FD0102L, SDC_SHARP_CONF_1);
writel(0x00F500F4L, SDC_SHARP_CONF_2);
writel(SDC_COM_SHARP | SDC_COM_TFT_COLOR, SDC_COM_CONF);
/* TODO: probably IF_CONF must be adapted (see below)! */
break;
case IPU_PANEL_TFT:
writel(SDC_COM_TFT_COLOR, SDC_COM_CONF);
break;
default:
return -EINVAL;
}
/*
* Calculate divider: The fractional part is 4 bits so simply
* multiple by 2^4 to get it.
*
* Opposed to the kernel driver mode->pixclock is the time of one
* pixel in pico seconds, so:
* pixel_clk = 1e12 / mode->pixclock
* div = ipu_clk * 16 / pixel_clk
* leads to:
* div = ipu_clk * 16 / (1e12 / mode->pixclock)
* or:
* div = ipu_clk * 16 * mode->pixclock / 1e12
*
* To avoid integer overflows this is split into 2 shifts and
* one divide with sufficient accuracy:
* 16*1024*128*476837 = 0.9999996682e12
*/
div = ((clock/1024) * (mode->pixclock/128)) / 476837;
debug("hsp_clk is %d, div=%d\n", clock, div);
/* coerce to not less than 4.0, not more than 255.9375 */
if (div < 0x40)
div = 0x40;
else if (div > 0xFFF)
div = 0xFFF;
/* DISP3_IF_CLK_DOWN_WR is half the divider value and 2 less
* fraction bits. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR
* based on timing debug DISP3_IF_CLK_UP_WR is 0
*/
writel((((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF);
/* DI settings for display 3: clock idle (bit 26) during vsync */
old_conf = readl(DI_DISP_IF_CONF) & 0x78FFFFFF;
writel(old_conf | IF_CONF, DI_DISP_IF_CONF);
/* only set display 3 polarity bits */
old_conf = readl(DI_DISP_SIG_POL) & 0xE0FFFFFF;
writel(old_conf | mode->sync, DI_DISP_SIG_POL);
writel(fmt_cfg[di_setup].b0, DI_DISP3_B0_MAP);
writel(fmt_cfg[di_setup].b1, DI_DISP3_B1_MAP);
writel(fmt_cfg[di_setup].b2, DI_DISP3_B2_MAP);
writel(readl(DI_DISP_ACC_CC) |
((fmt_cfg[di_setup].acc - 1) << 12), DI_DISP_ACC_CC);
debug("DI_DISP_IF_CONF = 0x%08X\n", readl(DI_DISP_IF_CONF));
debug("DI_DISP_SIG_POL = 0x%08X\n", readl(DI_DISP_SIG_POL));
debug("DI_DISP3_TIME_CONF = 0x%08X\n", readl(DI_DISP3_TIME_CONF));
debug("SDC_HOR_CONF = 0x%08X\n", readl(SDC_HOR_CONF));
debug("SDC_VER_CONF = 0x%08X\n", readl(SDC_VER_CONF));
return 0;
}
static void ipu_ch_param_set_size(union chan_param_mem *params,
uint pixelfmt, uint16_t width,
uint16_t height, uint16_t stride)
{
debug("%s(pixelfmt=%d, width=%d, height=%d, stride=%d)\n",
__func__, pixelfmt, width, height, stride);
params->pp.fw = width - 1;
params->pp.fh_l = height - 1;
params->pp.fh_h = (height - 1) >> 8;
params->pp.sl = stride - 1;
/* See above, for further formats see the Linux driver */
switch (pixelfmt) {
case GDF_16BIT_565RGB:
params->ip.bpp = 2;
params->ip.pfs = 4;
params->ip.npb = 7;
params->ip.sat = 2; /* SAT = 32-bit access */
params->ip.ofs0 = 0; /* Red bit offset */
params->ip.ofs1 = 5; /* Green bit offset */
params->ip.ofs2 = 11; /* Blue bit offset */
params->ip.ofs3 = 16; /* Alpha bit offset */
params->ip.wid0 = 4; /* Red bit width - 1 */
params->ip.wid1 = 5; /* Green bit width - 1 */
params->ip.wid2 = 4; /* Blue bit width - 1 */
break;
case GDF_32BIT_X888RGB:
params->ip.bpp = 1; /* 24 BPP & RGB PFS */
params->ip.pfs = 4;
params->ip.npb = 7;
params->ip.sat = 2; /* SAT = 32-bit access */
params->ip.ofs0 = 16; /* Red bit offset */
params->ip.ofs1 = 8; /* Green bit offset */
params->ip.ofs2 = 0; /* Blue bit offset */
params->ip.ofs3 = 24; /* Alpha bit offset */
params->ip.wid0 = 7; /* Red bit width - 1 */
params->ip.wid1 = 7; /* Green bit width - 1 */
params->ip.wid2 = 7; /* Blue bit width - 1 */
break;
default:
printf("mx3fb: Pixel format not supported!\n");
break;
}
params->pp.nsb = 1;
}
static void ipu_ch_param_set_buffer(union chan_param_mem *params,
void *buf0, void *buf1)
{
params->pp.eba0 = (u32)buf0;
params->pp.eba1 = (u32)buf1;
}
static void ipu_write_param_mem(uint32_t addr, uint32_t *data,
uint32_t num_words)
{
for (; num_words > 0; num_words--) {
writel(addr, IPU_IMA_ADDR);
writel(*data++, IPU_IMA_DATA);
addr++;
if ((addr & 0x7) == 5) {
addr &= ~0x7; /* set to word 0 */
addr += 8; /* increment to next row */
}
}
}
static uint32_t dma_param_addr(enum ipu_channel channel)
{
/* Channel Parameter Memory */
return 0x10000 | (channel << 4);
}
static void ipu_init_channel_buffer(enum ipu_channel channel, void *fbmem)
{
union chan_param_mem params = {};
uint32_t reg;
uint32_t stride_bytes;
stride_bytes = (panel.plnSizeX * panel.gdfBytesPP + 3) & ~3;
debug("%s(channel=%d, fbmem=%p)\n", __func__, channel, fbmem);
/* Build parameter memory data for DMA channel */
ipu_ch_param_set_size(&params, panel.gdfIndex,
panel.plnSizeX, panel.plnSizeY, stride_bytes);
ipu_ch_param_set_buffer(&params, fbmem, NULL);
params.pp.bam = 0;
/* Some channels (rotation) have restriction on burst length */
switch (channel) {
case IDMAC_SDC_0:
/* In original code only IPU_PIX_FMT_RGB565 was setting burst */
params.pp.npb = 16 - 1;
break;
default:
break;
}
ipu_write_param_mem(dma_param_addr(channel), (uint32_t *)&params, 10);
/* Disable double-buffering */
reg = readl(IPU_CHA_DB_MODE_SEL);
reg &= ~(1UL << channel);
writel(reg, IPU_CHA_DB_MODE_SEL);
}
static void ipu_channel_set_priority(enum ipu_channel channel,
int prio)
{
u32 reg = readl(IDMAC_CHA_PRI);
if (prio)
reg |= 1UL << channel;
else
reg &= ~(1UL << channel);
writel(reg, IDMAC_CHA_PRI);
}
/*
* ipu_enable_channel() - enable an IPU channel.
* @channel: channel ID.
* @return: 0 on success or negative error code on failure.
*/
static int ipu_enable_channel(enum ipu_channel channel)
{
uint32_t reg;
/* Reset to buffer 0 */
writel(1UL << channel, IPU_CHA_CUR_BUF);
switch (channel) {
case IDMAC_SDC_0:
ipu_channel_set_priority(channel, 1);
break;
default:
break;
}
reg = readl(IDMAC_CHA_EN);
writel(reg | (1UL << channel), IDMAC_CHA_EN);
return 0;
}
static int ipu_update_channel_buffer(enum ipu_channel channel, void *buf)
{
uint32_t reg;
reg = readl(IPU_CHA_BUF0_RDY);
if (reg & (1UL << channel))
return -EACCES;
/* 44.3.3.1.9 - Row Number 1 (WORD1, offset 0) */
writel(dma_param_addr(channel) + 0x0008UL, IPU_IMA_ADDR);
writel((u32)buf, IPU_IMA_DATA);
return 0;
}
static int idmac_tx_submit(enum ipu_channel channel, void *buf)
{
int ret;
ipu_init_channel_buffer(channel, buf);
/* ipu_idmac.c::ipu_submit_channel_buffers() */
ret = ipu_update_channel_buffer(channel, buf);
if (ret < 0)
return ret;
/* ipu_idmac.c::ipu_select_buffer() */
/* Mark buffer 0 as ready. */
writel(1UL << channel, IPU_CHA_BUF0_RDY);
ret = ipu_enable_channel(channel);
return ret;
}
static void sdc_enable_channel(void *fbmem)
{
int ret;
u32 reg;
ret = idmac_tx_submit(IDMAC_SDC_0, fbmem);
/* mx3fb.c::sdc_fb_init() */
if (ret >= 0) {
reg = readl(SDC_COM_CONF);
writel(reg | SDC_COM_BG_EN, SDC_COM_CONF);
}
/*
* Attention! Without this msleep the channel keeps generating
* interrupts. Next sdc_set_brightness() is going to be called
* from mx3fb_blank().
*/
udelay(2000);
}
/*
* mx3fb_set_par() - set framebuffer parameters and change the operating mode.
* @return: 0 on success or negative error code on failure.
* TODO: currently only 666 and TFT as DI setup supported
*/
static int mx3fb_set_par(void)
{
int ret;
ret = sdc_init_panel(panel.plnSizeX, panel.plnSizeY,
IPU_PIX_FMT_RGB666, IPU_PANEL_TFT);
if (ret < 0)
return ret;
writel((mode->left_margin << 16) | mode->upper_margin, SDC_BG_POS);
return 0;
}
static void ll_disp3_enable(void *base)
{
u32 reg;
debug("%s(base=0x%x)\n", __func__, (u32) base);
/* pcm037.c::mxc_board_init() */
/* Display Interface #3 */
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD0, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD1, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD2, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD3, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD4, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD5, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD6, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD7, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD8, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD9, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD10, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD11, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD12, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD13, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD14, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD15, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD16, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_LD17, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_VSYNC3, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_HSYNC, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_FPSHIFT, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_DRDY0, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_REV, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_CONTRAST, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_SPL, MUX_CTL_FUNC));
mx31_gpio_mux(IOMUX_MODE_L(MX31_PIN_D3_CLS, MUX_CTL_FUNC));
/* ipu_idmac.c::ipu_probe() */
/* Start the clock */
__REG(CCM_CGR1) = __REG(CCM_CGR1) | (3 << 22);
/* ipu_idmac.c::ipu_idmac_init() */
/* Service request counter to maximum - shouldn't be needed */
writel(0x00000070, IDMAC_CONF);
/* ipu_idmac.c::ipu_init_channel() */
/* Enable IPU sub modules */
reg = readl(IPU_CONF) | IPU_CONF_SDC_EN | IPU_CONF_DI_EN;
writel(reg, IPU_CONF);
/* mx3fb.c::init_fb_chan() */
/* set Display Interface clock period */
writel(0x00100010L, DI_HSP_CLK_PER);
/* Might need to trigger HSP clock change - see 44.3.3.8.5 */
/* mx3fb.c::sdc_set_brightness() */
/* This might be board-specific */
writel(0x03000000UL | 255 << 16, SDC_PWM_CTRL);
/* mx3fb.c::sdc_set_global_alpha() */
/* Use global - not per-pixel - Alpha-blending */
reg = readl(SDC_GW_CTRL) & 0x00FFFFFFL;
writel(reg | ((uint32_t) 0xff << 24), SDC_GW_CTRL);
reg = readl(SDC_COM_CONF);
writel(reg | SDC_COM_GLB_A, SDC_COM_CONF);
/* mx3fb.c::sdc_set_color_key() */
/* Disable colour-keying for background */
reg = readl(SDC_COM_CONF) &
~(SDC_COM_GWSEL | SDC_COM_KEY_COLOR_G);
writel(reg, SDC_COM_CONF);
mx3fb_set_par();
sdc_enable_channel(base);
/*
* Linux driver calls sdc_set_brightness() here again,
* once is enough for us
*/
debug("%s() done\n", __func__);
}
/* ------------------------ public part ------------------- */
ulong calc_fbsize(void)
{
return panel.plnSizeX * panel.plnSizeY * panel.gdfBytesPP;
}
/*
* The current implementation is only tested for GDF_16BIT_565RGB!
* It was switched from the original CONFIG_LCD setup to CONFIG_VIDEO,
* because the lcd code seemed loaded with color table stuff, that
* does not relate to most modern TFTs. cfb_console.c looks more
* straight forward.
* This is the environment setting for the original setup
* "unknown=video=ctfb:x:240,y:320,depth:16,mode:0,pclk:185925,le:9,ri:17,
* up:7,lo:10,hs:1,vs:1,sync:100663296,vmode:0"
* "videomode=unknown"
*
* Settings for VBEST VGG322403 display:
* "videomode=video=ctfb:x:320,y:240,depth:16,mode:0,pclk:156000,
* "le:20,ri:68,up:7,lo:29,hs:30,vs:3,sync:100663296,vmode:0"
*
* Settings for COM57H5M10XRC display:
* "videomode=video=ctfb:x:640,y:480,depth:16,mode:0,pclk:40000,
* "le:120,ri:40,up:35,lo:10,hs:30,vs:3,sync:100663296,vmode:0"
*/
void *video_hw_init(void)
{
char *penv;
u32 memsize;
unsigned long t1, hsynch, vsynch;
int bits_per_pixel, i, tmp, videomode;
tmp = 0;
puts("Video: ");
videomode = CONFIG_SYS_DEFAULT_VIDEO_MODE;
/* get video mode via environment */
penv = env_get("videomode");
if (penv) {
/* decide if it is a string */
if (penv[0] <= '9') {
videomode = (int) simple_strtoul(penv, NULL, 16);
tmp = 1;
}
} else {
tmp = 1;
}
if (tmp) {
/* parameter are vesa modes */
/* search params */
for (i = 0; i < VESA_MODES_COUNT; i++) {
if (vesa_modes[i].vesanr == videomode)
break;
}
if (i == VESA_MODES_COUNT) {
printf("No VESA Mode found, switching to mode 0x%x ",
CONFIG_SYS_DEFAULT_VIDEO_MODE);
i = 0;
}
mode = (struct ctfb_res_modes *)
&res_mode_init[vesa_modes[i].resindex];
bits_per_pixel = vesa_modes[i].bits_per_pixel;
} else {
mode = (struct ctfb_res_modes *) &var_mode;
bits_per_pixel = video_get_params(mode, penv);
}
/* calculate hsynch and vsynch freq (info only) */
t1 = (mode->left_margin + mode->xres +
mode->right_margin + mode->hsync_len) / 8;
t1 *= 8;
t1 *= mode->pixclock;
t1 /= 1000;
hsynch = 1000000000L / t1;
t1 *= (mode->upper_margin + mode->yres +
mode->lower_margin + mode->vsync_len);
t1 /= 1000;
vsynch = 1000000000L / t1;
/* fill in Graphic device struct */
sprintf(panel.modeIdent, "%dx%dx%d %ldkHz %ldHz",
mode->xres, mode->yres,
bits_per_pixel, (hsynch / 1000), (vsynch / 1000));
printf("%s\n", panel.modeIdent);
panel.winSizeX = mode->xres;
panel.winSizeY = mode->yres;
panel.plnSizeX = mode->xres;
panel.plnSizeY = mode->yres;
switch (bits_per_pixel) {
case 24:
panel.gdfBytesPP = 4;
panel.gdfIndex = GDF_32BIT_X888RGB;
break;
case 16:
panel.gdfBytesPP = 2;
panel.gdfIndex = GDF_16BIT_565RGB;
break;
default:
panel.gdfBytesPP = 1;
panel.gdfIndex = GDF__8BIT_INDEX;
break;
}
/* set up Hardware */
memsize = calc_fbsize();
debug("%s() allocating %d bytes\n", __func__, memsize);
/* fill in missing Graphic device struct */
panel.frameAdrs = (u32) malloc(memsize);
if (panel.frameAdrs == 0) {
printf("%s() malloc(%d) failed\n", __func__, memsize);
return 0;
}
panel.memSize = memsize;
ll_disp3_enable((void *) panel.frameAdrs);
memset((void *) panel.frameAdrs, 0, memsize);
debug("%s() done, framebuffer at 0x%x, size=%d cleared\n",
__func__, panel.frameAdrs, memsize);
return (void *) &panel;
}
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