--- /dev/null
+/*
+ * Copyright (C) 2009
+ * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
+ * Copyright (C) 2011
+ * HALE electronic GmbH, <helmut.raiger@hale.at>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <malloc.h>
+#include <video_fb.h>
+
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/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;
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* 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(¶ms, panel.gdfIndex,
+ panel.plnSizeX, panel.plnSizeY, stride_bytes);
+ ipu_ch_param_set_buffer(¶ms, 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 *)¶ms, 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 = getenv("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;
+}
+
+void video_set_lut(unsigned int index, /* color number */
+ unsigned char r, /* red */
+ unsigned char g, /* green */
+ unsigned char b /* blue */
+ )
+{
+ return;
+}
Code Review / kvmfornfv.git / blobdiff