GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/video/imx/Kconfig

@@ -0,0 +1,8 @@
+
+config VIDEO_IPUV3
+	bool "i.MX IPUv3 Core video support"
+	depends on (VIDEO || DM_VIDEO) && (MX5 || MX6)
+	help
+	  This enables framebuffer driver for i.MX processors working
+	  on the IPUv3(Image Processing Unit) internal graphic processor.
+

source/bootloader/u-boot-2020.01/drivers/video/imx/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2000-2007
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+
+obj-y += mxc_ipuv3_fb.o ipu_common.o ipu_disp.o

source/bootloader/u-boot-2020.01/drivers/video/imx/ipu.h

@@ -0,0 +1,268 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Porting to u-boot:
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * Linux IPU driver for MX51:
+ *
+ * (C) Copyright 2005-2010 Freescale Semiconductor, Inc.
+ */
+
+#ifndef __ASM_ARCH_IPU_H__
+#define __ASM_ARCH_IPU_H__
+
+#include <linux/types.h>
+#include <ipu_pixfmt.h>
+
+#define IDMA_CHAN_INVALID	0xFF
+#define HIGH_RESOLUTION_WIDTH	1024
+
+struct clk {
+	const char *name;
+	int id;
+	/* Source clock this clk depends on */
+	struct clk *parent;
+	/* Secondary clock to enable/disable with this clock */
+	struct clk *secondary;
+	/* Current clock rate */
+	unsigned long rate;
+	/* Reference count of clock enable/disable */
+	__s8 usecount;
+	/* Register bit position for clock's enable/disable control. */
+	u8 enable_shift;
+	/* Register address for clock's enable/disable control. */
+	void *enable_reg;
+	u32 flags;
+	/*
+	 * Function ptr to recalculate the clock's rate based on parent
+	 * clock's rate
+	 */
+	void (*recalc) (struct clk *);
+	/*
+	 * Function ptr to set the clock to a new rate. The rate must match a
+	 * supported rate returned from round_rate. Leave blank if clock is not
+	* programmable
+	 */
+	int (*set_rate) (struct clk *, unsigned long);
+	/*
+	 * Function ptr to round the requested clock rate to the nearest
+	 * supported rate that is less than or equal to the requested rate.
+	 */
+	unsigned long (*round_rate) (struct clk *, unsigned long);
+	/*
+	 * Function ptr to enable the clock. Leave blank if clock can not
+	 * be gated.
+	 */
+	int (*enable) (struct clk *);
+	/*
+	 * Function ptr to disable the clock. Leave blank if clock can not
+	 * be gated.
+	 */
+	void (*disable) (struct clk *);
+	/* Function ptr to set the parent clock of the clock. */
+	int (*set_parent) (struct clk *, struct clk *);
+};
+
+/*
+ * Enumeration of Synchronous (Memory-less) panel types
+ */
+typedef enum {
+	IPU_PANEL_SHARP_TFT,
+	IPU_PANEL_TFT,
+} ipu_panel_t;
+
+/*
+ * IPU Driver channels definitions.
+ * Note these are different from IDMA channels
+ */
+#define IPU_MAX_CH	32
+#define _MAKE_CHAN(num, v_in, g_in, a_in, out) \
+	((num << 24) | (v_in << 18) | (g_in << 12) | (a_in << 6) | out)
+#define _MAKE_ALT_CHAN(ch)		(ch | (IPU_MAX_CH << 24))
+#define IPU_CHAN_ID(ch)			(ch >> 24)
+#define IPU_CHAN_ALT(ch)		(ch & 0x02000000)
+#define IPU_CHAN_ALPHA_IN_DMA(ch)	((uint32_t) (ch >> 6) & 0x3F)
+#define IPU_CHAN_GRAPH_IN_DMA(ch)	((uint32_t) (ch >> 12) & 0x3F)
+#define IPU_CHAN_VIDEO_IN_DMA(ch)	((uint32_t) (ch >> 18) & 0x3F)
+#define IPU_CHAN_OUT_DMA(ch)		((uint32_t) (ch & 0x3F))
+#define NO_DMA 0x3F
+#define ALT	1
+
+/*
+ * Enumeration of IPU logical channels. An IPU logical channel is defined as a
+ * combination of an input (memory to IPU), output (IPU to memory), and/or
+ * secondary input IDMA channels and in some cases an Image Converter task.
+ * Some channels consist of only an input or output.
+ */
+typedef enum {
+	CHAN_NONE = -1,
+
+	MEM_DC_SYNC = _MAKE_CHAN(7, 28, NO_DMA, NO_DMA, NO_DMA),
+	MEM_DC_ASYNC = _MAKE_CHAN(8, 41, NO_DMA, NO_DMA, NO_DMA),
+	MEM_BG_SYNC = _MAKE_CHAN(9, 23, NO_DMA, 51, NO_DMA),
+	MEM_FG_SYNC = _MAKE_CHAN(10, 27, NO_DMA, 31, NO_DMA),
+
+	MEM_BG_ASYNC0 = _MAKE_CHAN(11, 24, NO_DMA, 52, NO_DMA),
+	MEM_FG_ASYNC0 = _MAKE_CHAN(12, 29, NO_DMA, 33, NO_DMA),
+	MEM_BG_ASYNC1 = _MAKE_ALT_CHAN(MEM_BG_ASYNC0),
+	MEM_FG_ASYNC1 = _MAKE_ALT_CHAN(MEM_FG_ASYNC0),
+
+	DIRECT_ASYNC0 = _MAKE_CHAN(13, NO_DMA, NO_DMA, NO_DMA, NO_DMA),
+	DIRECT_ASYNC1 = _MAKE_CHAN(14, NO_DMA, NO_DMA, NO_DMA, NO_DMA),
+
+} ipu_channel_t;
+
+/*
+ * Enumeration of types of buffers for a logical channel.
+ */
+typedef enum {
+	IPU_OUTPUT_BUFFER = 0,	/*< Buffer for output from IPU */
+	IPU_ALPHA_IN_BUFFER = 1,	/*< Buffer for input to IPU */
+	IPU_GRAPH_IN_BUFFER = 2,	/*< Buffer for input to IPU */
+	IPU_VIDEO_IN_BUFFER = 3,	/*< Buffer for input to IPU */
+	IPU_INPUT_BUFFER = IPU_VIDEO_IN_BUFFER,
+	IPU_SEC_INPUT_BUFFER = IPU_GRAPH_IN_BUFFER,
+} ipu_buffer_t;
+
+#define IPU_PANEL_SERIAL		1
+#define IPU_PANEL_PARALLEL		2
+
+struct ipu_channel {
+	u8 video_in_dma;
+	u8 alpha_in_dma;
+	u8 graph_in_dma;
+	u8 out_dma;
+};
+
+enum ipu_dmfc_type {
+	DMFC_NORMAL = 0,
+	DMFC_HIGH_RESOLUTION_DC,
+	DMFC_HIGH_RESOLUTION_DP,
+	DMFC_HIGH_RESOLUTION_ONLY_DP,
+};
+
+
+/*
+ * Union of initialization parameters for a logical channel.
+ */
+typedef union {
+	struct {
+		uint32_t di;
+		unsigned char interlaced;
+	} mem_dc_sync;
+	struct {
+		uint32_t temp;
+	} mem_sdc_fg;
+	struct {
+		uint32_t di;
+		unsigned char interlaced;
+		uint32_t in_pixel_fmt;
+		uint32_t out_pixel_fmt;
+		unsigned char alpha_chan_en;
+	} mem_dp_bg_sync;
+	struct {
+		uint32_t temp;
+	} mem_sdc_bg;
+	struct {
+		uint32_t di;
+		unsigned char interlaced;
+		uint32_t in_pixel_fmt;
+		uint32_t out_pixel_fmt;
+		unsigned char alpha_chan_en;
+	} mem_dp_fg_sync;
+} ipu_channel_params_t;
+
+/*
+ * Enumeration of IPU interrupts.
+ */
+enum ipu_irq_line {
+	IPU_IRQ_DP_SF_END = 448 + 3,
+	IPU_IRQ_DC_FC_1 = 448 + 9,
+};
+
+/*
+ * Bitfield of Display Interface signal polarities.
+ */
+typedef struct {
+	unsigned datamask_en:1;
+	unsigned ext_clk:1;
+	unsigned interlaced:1;
+	unsigned odd_field_first:1;
+	unsigned clksel_en:1;
+	unsigned clkidle_en:1;
+	unsigned data_pol:1;	/* true = inverted */
+	unsigned clk_pol:1;	/* true = rising edge */
+	unsigned enable_pol:1;
+	unsigned Hsync_pol:1;	/* true = active high */
+	unsigned Vsync_pol:1;
+} ipu_di_signal_cfg_t;
+
+typedef enum {
+	RGB,
+	YCbCr,
+	YUV
+} ipu_color_space_t;
+
+/* Common IPU API */
+int32_t ipu_init_channel(ipu_channel_t channel, ipu_channel_params_t *params);
+void ipu_uninit_channel(ipu_channel_t channel);
+
+int32_t ipu_init_channel_buffer(ipu_channel_t channel, ipu_buffer_t type,
+				uint32_t pixel_fmt,
+				uint16_t width, uint16_t height,
+				uint32_t stride,
+				dma_addr_t phyaddr_0, dma_addr_t phyaddr_1,
+				uint32_t u_offset, uint32_t v_offset);
+
+int32_t ipu_update_channel_buffer(ipu_channel_t channel, ipu_buffer_t type,
+				  uint32_t bufNum, dma_addr_t phyaddr);
+
+int32_t ipu_is_channel_busy(ipu_channel_t channel);
+void ipu_clear_buffer_ready(ipu_channel_t channel, ipu_buffer_t type,
+		uint32_t bufNum);
+int32_t ipu_enable_channel(ipu_channel_t channel);
+int32_t ipu_disable_channel(ipu_channel_t channel);
+
+int32_t ipu_init_sync_panel(int disp,
+			    uint32_t pixel_clk,
+			    uint16_t width, uint16_t height,
+			    uint32_t pixel_fmt,
+			    uint16_t h_start_width, uint16_t h_sync_width,
+			    uint16_t h_end_width, uint16_t v_start_width,
+			    uint16_t v_sync_width, uint16_t v_end_width,
+			    uint32_t v_to_h_sync, ipu_di_signal_cfg_t sig);
+
+int32_t ipu_disp_set_global_alpha(ipu_channel_t channel, unsigned char enable,
+				  uint8_t alpha);
+int32_t ipu_disp_set_color_key(ipu_channel_t channel, unsigned char enable,
+			       uint32_t colorKey);
+
+uint32_t bytes_per_pixel(uint32_t fmt);
+
+void clk_enable(struct clk *clk);
+void clk_disable(struct clk *clk);
+u32 clk_get_rate(struct clk *clk);
+int clk_set_rate(struct clk *clk, unsigned long rate);
+long clk_round_rate(struct clk *clk, unsigned long rate);
+int clk_set_parent(struct clk *clk, struct clk *parent);
+int clk_get_usecount(struct clk *clk);
+struct clk *clk_get_parent(struct clk *clk);
+
+void ipu_dump_registers(void);
+int ipu_probe(void);
+bool ipu_clk_enabled(void);
+
+void ipu_dmfc_init(int dmfc_type, int first);
+void ipu_init_dc_mappings(void);
+void ipu_dmfc_set_wait4eot(int dma_chan, int width);
+void ipu_dc_init(int dc_chan, int di, unsigned char interlaced);
+void ipu_dc_uninit(int dc_chan);
+void ipu_dp_dc_enable(ipu_channel_t channel);
+int ipu_dp_init(ipu_channel_t channel, uint32_t in_pixel_fmt,
+		 uint32_t out_pixel_fmt);
+void ipu_dp_uninit(ipu_channel_t channel);
+void ipu_dp_dc_disable(ipu_channel_t channel, unsigned char swap);
+ipu_color_space_t format_to_colorspace(uint32_t fmt);
+#endif

source/bootloader/u-boot-2020.01/drivers/video/imx/ipu_regs.h

@@ -0,0 +1,415 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Porting to u-boot:
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * Linux IPU driver for MX51:
+ *
+ * (C) Copyright 2005-2009 Freescale Semiconductor, Inc.
+ */
+
+#ifndef __IPU_REGS_INCLUDED__
+#define __IPU_REGS_INCLUDED__
+
+#define IPU_DISP0_BASE		0x00000000
+#define IPU_MCU_T_DEFAULT	8
+#define IPU_DISP1_BASE		(IPU_MCU_T_DEFAULT << 25)
+#define IPU_CM_REG_BASE		0x00000000
+#define IPU_STAT_REG_BASE	0x00000200
+#define IPU_IDMAC_REG_BASE	0x00008000
+#define IPU_ISP_REG_BASE	0x00010000
+#define IPU_DP_REG_BASE		0x00018000
+#define IPU_IC_REG_BASE		0x00020000
+#define IPU_IRT_REG_BASE	0x00028000
+#define IPU_CSI0_REG_BASE	0x00030000
+#define IPU_CSI1_REG_BASE	0x00038000
+#define IPU_DI0_REG_BASE	0x00040000
+#define IPU_DI1_REG_BASE	0x00048000
+#define IPU_SMFC_REG_BASE	0x00050000
+#define IPU_DC_REG_BASE		0x00058000
+#define IPU_DMFC_REG_BASE	0x00060000
+#define IPU_VDI_REG_BASE	0x00680000
+#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
+#define IPU_CPMEM_REG_BASE	0x01000000
+#define IPU_LUT_REG_BASE	0x01020000
+#define IPU_SRM_REG_BASE	0x01040000
+#define IPU_TPM_REG_BASE	0x01060000
+#define IPU_DC_TMPL_REG_BASE	0x01080000
+#define IPU_ISP_TBPR_REG_BASE	0x010C0000
+#elif defined(CONFIG_MX6)
+#define IPU_CPMEM_REG_BASE	0x00100000
+#define IPU_LUT_REG_BASE	0x00120000
+#define IPU_SRM_REG_BASE	0x00140000
+#define IPU_TPM_REG_BASE	0x00160000
+#define IPU_DC_TMPL_REG_BASE	0x00180000
+#define IPU_ISP_TBPR_REG_BASE	0x001C0000
+#endif
+
+#define IPU_CTRL_BASE_ADDR	(IPU_SOC_BASE_ADDR + IPU_SOC_OFFSET)
+
+extern u32 *ipu_dc_tmpl_reg;
+
+#define DC_EVT_NF		0
+#define DC_EVT_NL		1
+#define DC_EVT_EOF		2
+#define DC_EVT_NFIELD		3
+#define DC_EVT_EOL		4
+#define DC_EVT_EOFIELD		5
+#define DC_EVT_NEW_ADDR		6
+#define DC_EVT_NEW_CHAN		7
+#define DC_EVT_NEW_DATA		8
+
+#define DC_EVT_NEW_ADDR_W_0	0
+#define DC_EVT_NEW_ADDR_W_1	1
+#define DC_EVT_NEW_CHAN_W_0	2
+#define DC_EVT_NEW_CHAN_W_1	3
+#define DC_EVT_NEW_DATA_W_0	4
+#define DC_EVT_NEW_DATA_W_1	5
+#define DC_EVT_NEW_ADDR_R_0	6
+#define DC_EVT_NEW_ADDR_R_1	7
+#define DC_EVT_NEW_CHAN_R_0	8
+#define DC_EVT_NEW_CHAN_R_1	9
+#define DC_EVT_NEW_DATA_R_0	10
+#define DC_EVT_NEW_DATA_R_1	11
+
+/* Software reset for ipu */
+#define SW_IPU_RST	8
+
+enum {
+	IPU_CONF_DP_EN = 0x00000020,
+	IPU_CONF_DI0_EN = 0x00000040,
+	IPU_CONF_DI1_EN = 0x00000080,
+	IPU_CONF_DMFC_EN = 0x00000400,
+	IPU_CONF_DC_EN = 0x00000200,
+
+	DI0_COUNTER_RELEASE = 0x01000000,
+	DI1_COUNTER_RELEASE = 0x02000000,
+
+	DI_DW_GEN_ACCESS_SIZE_OFFSET = 24,
+	DI_DW_GEN_COMPONENT_SIZE_OFFSET = 16,
+
+	DI_GEN_DI_CLK_EXT = 0x100000,
+	DI_GEN_POLARITY_1 = 0x00000001,
+	DI_GEN_POLARITY_2 = 0x00000002,
+	DI_GEN_POLARITY_3 = 0x00000004,
+	DI_GEN_POLARITY_4 = 0x00000008,
+	DI_GEN_POLARITY_5 = 0x00000010,
+	DI_GEN_POLARITY_6 = 0x00000020,
+	DI_GEN_POLARITY_7 = 0x00000040,
+	DI_GEN_POLARITY_8 = 0x00000080,
+	DI_GEN_POL_CLK = 0x20000,
+
+	DI_POL_DRDY_DATA_POLARITY = 0x00000080,
+	DI_POL_DRDY_POLARITY_15 = 0x00000010,
+	DI_VSYNC_SEL_OFFSET = 13,
+
+	DC_WR_CH_CONF_FIELD_MODE = 0x00000200,
+	DC_WR_CH_CONF_PROG_TYPE_OFFSET = 5,
+	DC_WR_CH_CONF_PROG_TYPE_MASK = 0x000000E0,
+	DC_WR_CH_CONF_PROG_DI_ID = 0x00000004,
+	DC_WR_CH_CONF_PROG_DISP_ID_OFFSET = 3,
+	DC_WR_CH_CONF_PROG_DISP_ID_MASK = 0x00000018,
+
+	DP_COM_CONF_FG_EN = 0x00000001,
+	DP_COM_CONF_GWSEL = 0x00000002,
+	DP_COM_CONF_GWAM = 0x00000004,
+	DP_COM_CONF_GWCKE = 0x00000008,
+	DP_COM_CONF_CSC_DEF_MASK = 0x00000300,
+	DP_COM_CONF_CSC_DEF_OFFSET = 8,
+	DP_COM_CONF_CSC_DEF_FG = 0x00000300,
+	DP_COM_CONF_CSC_DEF_BG = 0x00000200,
+	DP_COM_CONF_CSC_DEF_BOTH = 0x00000100,
+	DP_COM_CONF_GAMMA_EN = 0x00001000,
+	DP_COM_CONF_GAMMA_YUV_EN = 0x00002000,
+};
+
+enum di_pins {
+	DI_PIN11 = 0,
+	DI_PIN12 = 1,
+	DI_PIN13 = 2,
+	DI_PIN14 = 3,
+	DI_PIN15 = 4,
+	DI_PIN16 = 5,
+	DI_PIN17 = 6,
+	DI_PIN_CS = 7,
+
+	DI_PIN_SER_CLK = 0,
+	DI_PIN_SER_RS = 1,
+};
+
+enum di_sync_wave {
+	DI_SYNC_NONE = -1,
+	DI_SYNC_CLK = 0,
+	DI_SYNC_INT_HSYNC = 1,
+	DI_SYNC_HSYNC = 2,
+	DI_SYNC_VSYNC = 3,
+	DI_SYNC_DE = 5,
+};
+
+struct ipu_cm {
+	u32 conf;
+	u32 sisg_ctrl0;
+	u32 sisg_ctrl1;
+	u32 sisg_set[6];
+	u32 sisg_clear[6];
+	u32 int_ctrl[15];
+	u32 sdma_event[10];
+	u32 srm_pri1;
+	u32 srm_pri2;
+	u32 fs_proc_flow[3];
+	u32 fs_disp_flow[2];
+	u32 skip;
+	u32 disp_alt_conf;
+	u32 disp_gen;
+	u32 disp_alt[4];
+	u32 snoop;
+	u32 mem_rst;
+	u32 pm;
+	u32 gpr;
+	u32 reserved0[26];
+	u32 ch_db_mode_sel[2];
+	u32 reserved1[4];
+	u32 alt_ch_db_mode_sel[2];
+	u32 reserved2[2];
+	u32 ch_trb_mode_sel[2];
+};
+
+struct ipu_idmac {
+	u32 conf;
+	u32 ch_en[2];
+	u32 sep_alpha;
+	u32 alt_sep_alpha;
+	u32 ch_pri[2];
+	u32 wm_en[2];
+	u32 lock_en[2];
+	u32 sub_addr[5];
+	u32 bndm_en[2];
+	u32 sc_cord[2];
+	u32 reserved[44];
+	u32 ch_busy[2];
+};
+
+struct ipu_com_async {
+	u32 com_conf_async;
+	u32 graph_wind_ctrl_async;
+	u32 fg_pos_async;
+	u32 cur_pos_async;
+	u32 cur_map_async;
+	u32 gamma_c_async[8];
+	u32 gamma_s_async[4];
+	u32 dp_csca_async[4];
+	u32 dp_csc_async[2];
+};
+
+struct ipu_dp {
+	u32 com_conf_sync;
+	u32 graph_wind_ctrl_sync;
+	u32 fg_pos_sync;
+	u32 cur_pos_sync;
+	u32 cur_map_sync;
+	u32 gamma_c_sync[8];
+	u32 gamma_s_sync[4];
+	u32 csca_sync[4];
+	u32 csc_sync[2];
+	u32 cur_pos_alt;
+	struct ipu_com_async async[2];
+};
+
+struct ipu_di {
+	u32 general;
+	u32 bs_clkgen0;
+	u32 bs_clkgen1;
+	u32 sw_gen0[9];
+	u32 sw_gen1[9];
+	u32 sync_as;
+	u32 dw_gen[12];
+	u32 dw_set[48];
+	u32 stp_rep[4];
+	u32 stp_rep9;
+	u32 ser_conf;
+	u32 ssc;
+	u32 pol;
+	u32 aw0;
+	u32 aw1;
+	u32 scr_conf;
+	u32 stat;
+};
+
+struct ipu_stat {
+	u32 int_stat[15];
+	u32 cur_buf[2];
+	u32 alt_cur_buf_0;
+	u32 alt_cur_buf_1;
+	u32 srm_stat;
+	u32 proc_task_stat;
+	u32 disp_task_stat;
+	u32 triple_cur_buf[4];
+	u32 ch_buf0_rdy[2];
+	u32 ch_buf1_rdy[2];
+	u32 alt_ch_buf0_rdy[2];
+	u32 alt_ch_buf1_rdy[2];
+	u32 ch_buf2_rdy[2];
+};
+
+struct ipu_dc_ch {
+	u32 wr_ch_conf;
+	u32 wr_ch_addr;
+	u32 rl[5];
+};
+
+struct ipu_dc {
+	struct ipu_dc_ch dc_ch0_1_2[3];
+	u32 cmd_ch_conf_3;
+	u32 cmd_ch_conf_4;
+	struct ipu_dc_ch dc_ch5_6[2];
+	struct ipu_dc_ch dc_ch8;
+	u32 rl6_ch_8;
+	struct ipu_dc_ch dc_ch9;
+	u32 rl6_ch_9;
+	u32 gen;
+	u32 disp_conf1[4];
+	u32 disp_conf2[4];
+	u32 di0_conf[2];
+	u32 di1_conf[2];
+	u32 dc_map_ptr[15];
+	u32 dc_map_val[12];
+	u32 udge[16];
+	u32 lla[2];
+	u32 r_lla[2];
+	u32 wr_ch_addr_5_alt;
+	u32 stat;
+};
+
+struct ipu_dmfc {
+	u32 rd_chan;
+	u32 wr_chan;
+	u32 wr_chan_def;
+	u32 dp_chan;
+	u32 dp_chan_def;
+	u32 general[2];
+	u32 ic_ctrl;
+	u32 wr_chan_alt;
+	u32 wr_chan_def_alt;
+	u32 general1_alt;
+	u32 stat;
+};
+
+#define IPU_CM_REG		((struct ipu_cm *)(IPU_CTRL_BASE_ADDR + \
+				IPU_CM_REG_BASE))
+#define IPU_CONF		(&IPU_CM_REG->conf)
+#define IPU_SRM_PRI1		(&IPU_CM_REG->srm_pri1)
+#define IPU_SRM_PRI2		(&IPU_CM_REG->srm_pri2)
+#define IPU_FS_PROC_FLOW1	(&IPU_CM_REG->fs_proc_flow[0])
+#define IPU_FS_PROC_FLOW2	(&IPU_CM_REG->fs_proc_flow[1])
+#define IPU_FS_PROC_FLOW3	(&IPU_CM_REG->fs_proc_flow[2])
+#define IPU_FS_DISP_FLOW1	(&IPU_CM_REG->fs_disp_flow[0])
+#define IPU_DISP_GEN		(&IPU_CM_REG->disp_gen)
+#define IPU_MEM_RST		(&IPU_CM_REG->mem_rst)
+#define IPU_GPR			(&IPU_CM_REG->gpr)
+#define IPU_CHA_DB_MODE_SEL(ch)	(&IPU_CM_REG->ch_db_mode_sel[ch / 32])
+
+#define IPU_STAT		((struct ipu_stat *)(IPU_CTRL_BASE_ADDR + \
+				IPU_STAT_REG_BASE))
+#define IPU_INT_STAT(n)		(&IPU_STAT->int_stat[(n) - 1])
+#define IPU_CHA_CUR_BUF(ch)	(&IPU_STAT->cur_buf[ch / 32])
+#define IPU_CHA_BUF0_RDY(ch)	(&IPU_STAT->ch_buf0_rdy[ch / 32])
+#define IPU_CHA_BUF1_RDY(ch)	(&IPU_STAT->ch_buf1_rdy[ch / 32])
+#define IPUIRQ_2_STATREG(irq)	(IPU_INT_STAT(1) + ((irq) / 32))
+#define IPUIRQ_2_MASK(irq)	(1UL << ((irq) & 0x1F))
+
+#define IPU_INT_CTRL(n)		(&IPU_CM_REG->int_ctrl[(n) - 1])
+
+#define IDMAC_REG		((struct ipu_idmac *)(IPU_CTRL_BASE_ADDR + \
+				IPU_IDMAC_REG_BASE))
+#define IDMAC_CONF		(&IDMAC_REG->conf)
+#define IDMAC_CHA_EN(ch)	(&IDMAC_REG->ch_en[ch / 32])
+#define IDMAC_CHA_PRI(ch)	(&IDMAC_REG->ch_pri[ch / 32])
+
+#define DI_REG(di)		((struct ipu_di *)(IPU_CTRL_BASE_ADDR + \
+				((di == 1) ? IPU_DI1_REG_BASE : \
+				IPU_DI0_REG_BASE)))
+#define DI_GENERAL(di)		(&DI_REG(di)->general)
+#define DI_BS_CLKGEN0(di)	(&DI_REG(di)->bs_clkgen0)
+#define DI_BS_CLKGEN1(di)	(&DI_REG(di)->bs_clkgen1)
+
+#define DI_SW_GEN0(di, gen)	(&DI_REG(di)->sw_gen0[gen - 1])
+#define DI_SW_GEN1(di, gen)	(&DI_REG(di)->sw_gen1[gen - 1])
+#define DI_STP_REP(di, gen)	(&DI_REG(di)->stp_rep[(gen - 1) / 2])
+#define DI_STP_REP9(di)		(&DI_REG(di)->stp_rep9)
+#define DI_SYNC_AS_GEN(di)	(&DI_REG(di)->sync_as)
+#define DI_DW_GEN(di, gen)	(&DI_REG(di)->dw_gen[gen])
+#define DI_DW_SET(di, gen, set)	(&DI_REG(di)->dw_set[gen + 12 * set])
+#define DI_POL(di)		(&DI_REG(di)->pol)
+#define DI_SCR_CONF(di)		(&DI_REG(di)->scr_conf)
+
+#define DMFC_REG		((struct ipu_dmfc *)(IPU_CTRL_BASE_ADDR + \
+				IPU_DMFC_REG_BASE))
+#define DMFC_WR_CHAN		(&DMFC_REG->wr_chan)
+#define DMFC_WR_CHAN_DEF	(&DMFC_REG->wr_chan_def)
+#define DMFC_DP_CHAN		(&DMFC_REG->dp_chan)
+#define DMFC_DP_CHAN_DEF	(&DMFC_REG->dp_chan_def)
+#define DMFC_GENERAL1		(&DMFC_REG->general[0])
+#define DMFC_IC_CTRL		(&DMFC_REG->ic_ctrl)
+
+
+#define DC_REG			((struct ipu_dc *)(IPU_CTRL_BASE_ADDR + \
+				IPU_DC_REG_BASE))
+#define DC_MAP_CONF_PTR(n)	(&DC_REG->dc_map_ptr[n / 2])
+#define DC_MAP_CONF_VAL(n)	(&DC_REG->dc_map_val[n / 2])
+
+
+static inline struct ipu_dc_ch *dc_ch_offset(int ch)
+{
+	switch (ch) {
+	case 0:
+	case 1:
+	case 2:
+		return &DC_REG->dc_ch0_1_2[ch];
+	case 5:
+	case 6:
+		return &DC_REG->dc_ch5_6[ch - 5];
+	case 8:
+		return &DC_REG->dc_ch8;
+	case 9:
+		return &DC_REG->dc_ch9;
+	default:
+		printf("%s: invalid channel %d\n", __func__, ch);
+		return NULL;
+	}
+
+}
+
+#define DC_RL_CH(ch, evt)	(&dc_ch_offset(ch)->rl[evt / 2])
+
+#define DC_WR_CH_CONF(ch)	(&dc_ch_offset(ch)->wr_ch_conf)
+#define DC_WR_CH_ADDR(ch)	(&dc_ch_offset(ch)->wr_ch_addr)
+
+#define DC_WR_CH_CONF_1		DC_WR_CH_CONF(1)
+#define DC_WR_CH_CONF_5		DC_WR_CH_CONF(5)
+
+#define DC_GEN			(&DC_REG->gen)
+#define DC_DISP_CONF2(disp)	(&DC_REG->disp_conf2[disp])
+#define DC_STAT			(&DC_REG->stat)
+
+#define DP_SYNC 0
+#define DP_ASYNC0 0x60
+#define DP_ASYNC1 0xBC
+
+#define DP_REG			((struct ipu_dp *)(IPU_CTRL_BASE_ADDR + \
+				IPU_DP_REG_BASE))
+#define DP_COM_CONF()		(&DP_REG->com_conf_sync)
+#define DP_GRAPH_WIND_CTRL()	(&DP_REG->graph_wind_ctrl_sync)
+#define DP_CSC_A_0()		(&DP_REG->csca_sync[0])
+#define DP_CSC_A_1()		(&DP_REG->csca_sync[1])
+#define DP_CSC_A_2()		(&DP_REG->csca_sync[2])
+#define DP_CSC_A_3()		(&DP_REG->csca_sync[3])
+
+#define DP_CSC_0()		(&DP_REG->csc_sync[0])
+#define DP_CSC_1()		(&DP_REG->csc_sync[1])
+
+/* DC template opcodes */
+#define WROD(lf)		(0x18 | (lf << 1))
+
+#endif

source/bootloader/u-boot-2020.01/drivers/video/imx/mxc_ipuv3_fb.c

@@ -0,0 +1,721 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Porting to u-boot:
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * MX51 Linux framebuffer:
+ *
+ * (C) Copyright 2004-2010 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <linux/errno.h>
+#include <asm/global_data.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/fb.h>
+#include <asm/io.h>
+#include <asm/mach-imx/video.h>
+#include <malloc.h>
+#include <video_fb.h>
+#include "../videomodes.h"
+#include "ipu.h"
+#include "mxcfb.h"
+#include "ipu_regs.h"
+#include "display.h"
+#include <panel.h>
+
+#include <dm.h>
+#include <video.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int mxcfb_map_video_memory(struct fb_info *fbi);
+static int mxcfb_unmap_video_memory(struct fb_info *fbi);
+
+/* graphics setup */
+static GraphicDevice panel;
+static struct fb_videomode const *gmode;
+static uint8_t gdisp;
+static uint32_t gpixfmt;
+
+static void fb_videomode_to_var(struct fb_var_screeninfo *var,
+			 const struct fb_videomode *mode)
+{
+	var->xres = mode->xres;
+	var->yres = mode->yres;
+	var->xres_virtual = mode->xres;
+	var->yres_virtual = mode->yres;
+	var->xoffset = 0;
+	var->yoffset = 0;
+	var->pixclock = mode->pixclock;
+	var->left_margin = mode->left_margin;
+	var->right_margin = mode->right_margin;
+	var->upper_margin = mode->upper_margin;
+	var->lower_margin = mode->lower_margin;
+	var->hsync_len = mode->hsync_len;
+	var->vsync_len = mode->vsync_len;
+	var->sync = mode->sync;
+	var->vmode = mode->vmode & FB_VMODE_MASK;
+}
+
+/*
+ * Structure containing the MXC specific framebuffer information.
+ */
+struct mxcfb_info {
+	int blank;
+	ipu_channel_t ipu_ch;
+	int ipu_di;
+	u32 ipu_di_pix_fmt;
+	unsigned char overlay;
+	unsigned char alpha_chan_en;
+	dma_addr_t alpha_phy_addr0;
+	dma_addr_t alpha_phy_addr1;
+	void *alpha_virt_addr0;
+	void *alpha_virt_addr1;
+	uint32_t alpha_mem_len;
+	uint32_t cur_ipu_buf;
+	uint32_t cur_ipu_alpha_buf;
+
+	u32 pseudo_palette[16];
+};
+
+enum {
+	BOTH_ON,
+	SRC_ON,
+	TGT_ON,
+	BOTH_OFF
+};
+
+static unsigned long default_bpp = 16;
+static unsigned char g_dp_in_use;
+static struct fb_info *mxcfb_info[3];
+static int ext_clk_used;
+
+static uint32_t bpp_to_pixfmt(struct fb_info *fbi)
+{
+	uint32_t pixfmt = 0;
+
+	debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel);
+
+	if (fbi->var.nonstd)
+		return fbi->var.nonstd;
+
+	switch (fbi->var.bits_per_pixel) {
+	case 24:
+		pixfmt = IPU_PIX_FMT_BGR24;
+		break;
+	case 32:
+		pixfmt = IPU_PIX_FMT_BGR32;
+		break;
+	case 16:
+		pixfmt = IPU_PIX_FMT_RGB565;
+		break;
+	}
+	return pixfmt;
+}
+
+/*
+ * Set fixed framebuffer parameters based on variable settings.
+ *
+ * @param       info     framebuffer information pointer
+ */
+static int mxcfb_set_fix(struct fb_info *info)
+{
+	struct fb_fix_screeninfo *fix = &info->fix;
+	struct fb_var_screeninfo *var = &info->var;
+
+	fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
+
+	fix->type = FB_TYPE_PACKED_PIXELS;
+	fix->accel = FB_ACCEL_NONE;
+	fix->visual = FB_VISUAL_TRUECOLOR;
+	fix->xpanstep = 1;
+	fix->ypanstep = 1;
+
+	return 0;
+}
+
+static int setup_disp_channel1(struct fb_info *fbi)
+{
+	ipu_channel_params_t params;
+	struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
+
+	memset(&params, 0, sizeof(params));
+	params.mem_dp_bg_sync.di = mxc_fbi->ipu_di;
+
+	debug("%s called\n", __func__);
+	/*
+	 * Assuming interlaced means yuv output, below setting also
+	 * valid for mem_dc_sync. FG should have the same vmode as BG.
+	 */
+	if (fbi->var.vmode & FB_VMODE_INTERLACED) {
+		params.mem_dp_bg_sync.interlaced = 1;
+		params.mem_dp_bg_sync.out_pixel_fmt =
+			IPU_PIX_FMT_YUV444;
+	} else {
+		if (mxc_fbi->ipu_di_pix_fmt) {
+			params.mem_dp_bg_sync.out_pixel_fmt =
+				mxc_fbi->ipu_di_pix_fmt;
+		} else {
+			params.mem_dp_bg_sync.out_pixel_fmt =
+				IPU_PIX_FMT_RGB666;
+		}
+	}
+	params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi);
+	if (mxc_fbi->alpha_chan_en)
+		params.mem_dp_bg_sync.alpha_chan_en = 1;
+
+	ipu_init_channel(mxc_fbi->ipu_ch, &params);
+
+	return 0;
+}
+
+static int setup_disp_channel2(struct fb_info *fbi)
+{
+	int retval = 0;
+	struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
+
+	mxc_fbi->cur_ipu_buf = 1;
+	if (mxc_fbi->alpha_chan_en)
+		mxc_fbi->cur_ipu_alpha_buf = 1;
+
+	fbi->var.xoffset = fbi->var.yoffset = 0;
+
+	debug("%s: %x %d %d %d %lx %lx\n",
+		__func__,
+		mxc_fbi->ipu_ch,
+		fbi->var.xres,
+		fbi->var.yres,
+		fbi->fix.line_length,
+		fbi->fix.smem_start,
+		fbi->fix.smem_start +
+		(fbi->fix.line_length * fbi->var.yres));
+
+	retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER,
+					 bpp_to_pixfmt(fbi),
+					 fbi->var.xres, fbi->var.yres,
+					 fbi->fix.line_length,
+					 fbi->fix.smem_start +
+					 (fbi->fix.line_length * fbi->var.yres),
+					 fbi->fix.smem_start,
+					 0, 0);
+	if (retval)
+		printf("ipu_init_channel_buffer error %d\n", retval);
+
+	return retval;
+}
+
+/*
+ * Set framebuffer parameters and change the operating mode.
+ *
+ * @param       info     framebuffer information pointer
+ */
+static int mxcfb_set_par(struct fb_info *fbi)
+{
+	int retval = 0;
+	u32 mem_len;
+	ipu_di_signal_cfg_t sig_cfg;
+	struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par;
+	uint32_t out_pixel_fmt;
+
+	ipu_disable_channel(mxc_fbi->ipu_ch);
+	ipu_uninit_channel(mxc_fbi->ipu_ch);
+	mxcfb_set_fix(fbi);
+
+	mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
+	if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) {
+		if (fbi->fix.smem_start)
+			mxcfb_unmap_video_memory(fbi);
+
+		if (mxcfb_map_video_memory(fbi) < 0)
+			return -ENOMEM;
+	}
+
+	setup_disp_channel1(fbi);
+
+	memset(&sig_cfg, 0, sizeof(sig_cfg));
+	if (fbi->var.vmode & FB_VMODE_INTERLACED) {
+		sig_cfg.interlaced = 1;
+		out_pixel_fmt = IPU_PIX_FMT_YUV444;
+	} else {
+		if (mxc_fbi->ipu_di_pix_fmt)
+			out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt;
+		else
+			out_pixel_fmt = IPU_PIX_FMT_RGB666;
+	}
+	if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
+		sig_cfg.odd_field_first = 1;
+	if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used)
+		sig_cfg.ext_clk = 1;
+	if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
+		sig_cfg.Hsync_pol = 1;
+	if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
+		sig_cfg.Vsync_pol = 1;
+	if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL))
+		sig_cfg.clk_pol = 1;
+	if (fbi->var.sync & FB_SYNC_DATA_INVERT)
+		sig_cfg.data_pol = 1;
+	if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT))
+		sig_cfg.enable_pol = 1;
+	if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
+		sig_cfg.clkidle_en = 1;
+
+	debug("pixclock = %lu Hz\n", PICOS2KHZ(fbi->var.pixclock) * 1000UL);
+
+	if (ipu_init_sync_panel(mxc_fbi->ipu_di,
+				(PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
+				fbi->var.xres, fbi->var.yres,
+				out_pixel_fmt,
+				fbi->var.left_margin,
+				fbi->var.hsync_len,
+				fbi->var.right_margin,
+				fbi->var.upper_margin,
+				fbi->var.vsync_len,
+				fbi->var.lower_margin,
+				0, sig_cfg) != 0) {
+		puts("mxcfb: Error initializing panel.\n");
+		return -EINVAL;
+	}
+
+	retval = setup_disp_channel2(fbi);
+	if (retval)
+		return retval;
+
+	if (mxc_fbi->blank == FB_BLANK_UNBLANK)
+		ipu_enable_channel(mxc_fbi->ipu_ch);
+
+	return retval;
+}
+
+/*
+ * Check framebuffer variable parameters and adjust to valid values.
+ *
+ * @param       var      framebuffer variable parameters
+ *
+ * @param       info     framebuffer information pointer
+ */
+static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	u32 vtotal;
+	u32 htotal;
+
+	if (var->xres_virtual < var->xres)
+		var->xres_virtual = var->xres;
+	if (var->yres_virtual < var->yres)
+		var->yres_virtual = var->yres;
+
+	if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
+	    (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8))
+		var->bits_per_pixel = default_bpp;
+
+	switch (var->bits_per_pixel) {
+	case 8:
+		var->red.length = 3;
+		var->red.offset = 5;
+		var->red.msb_right = 0;
+
+		var->green.length = 3;
+		var->green.offset = 2;
+		var->green.msb_right = 0;
+
+		var->blue.length = 2;
+		var->blue.offset = 0;
+		var->blue.msb_right = 0;
+
+		var->transp.length = 0;
+		var->transp.offset = 0;
+		var->transp.msb_right = 0;
+		break;
+	case 16:
+		var->red.length = 5;
+		var->red.offset = 11;
+		var->red.msb_right = 0;
+
+		var->green.length = 6;
+		var->green.offset = 5;
+		var->green.msb_right = 0;
+
+		var->blue.length = 5;
+		var->blue.offset = 0;
+		var->blue.msb_right = 0;
+
+		var->transp.length = 0;
+		var->transp.offset = 0;
+		var->transp.msb_right = 0;
+		break;
+	case 24:
+		var->red.length = 8;
+		var->red.offset = 16;
+		var->red.msb_right = 0;
+
+		var->green.length = 8;
+		var->green.offset = 8;
+		var->green.msb_right = 0;
+
+		var->blue.length = 8;
+		var->blue.offset = 0;
+		var->blue.msb_right = 0;
+
+		var->transp.length = 0;
+		var->transp.offset = 0;
+		var->transp.msb_right = 0;
+		break;
+	case 32:
+		var->red.length = 8;
+		var->red.offset = 16;
+		var->red.msb_right = 0;
+
+		var->green.length = 8;
+		var->green.offset = 8;
+		var->green.msb_right = 0;
+
+		var->blue.length = 8;
+		var->blue.offset = 0;
+		var->blue.msb_right = 0;
+
+		var->transp.length = 8;
+		var->transp.offset = 24;
+		var->transp.msb_right = 0;
+		break;
+	}
+
+	if (var->pixclock < 1000) {
+		htotal = var->xres + var->right_margin + var->hsync_len +
+		    var->left_margin;
+		vtotal = var->yres + var->lower_margin + var->vsync_len +
+		    var->upper_margin;
+		var->pixclock = (vtotal * htotal * 6UL) / 100UL;
+		var->pixclock = KHZ2PICOS(var->pixclock);
+		printf("pixclock set for 60Hz refresh = %u ps\n",
+			var->pixclock);
+	}
+
+	var->height = -1;
+	var->width = -1;
+	var->grayscale = 0;
+
+	return 0;
+}
+
+static int mxcfb_map_video_memory(struct fb_info *fbi)
+{
+	if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) {
+		fbi->fix.smem_len = fbi->var.yres_virtual *
+				    fbi->fix.line_length;
+	}
+	fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN);
+
+#if CONFIG_IS_ENABLED(DM_VIDEO)
+	fbi->screen_base = (char *)gd->video_bottom;
+#else
+	fbi->screen_base = (char *)memalign(ARCH_DMA_MINALIGN,
+					    fbi->fix.smem_len);
+#endif
+
+	fbi->fix.smem_start = (unsigned long)fbi->screen_base;
+	if (fbi->screen_base == 0) {
+		puts("Unable to allocate framebuffer memory\n");
+		fbi->fix.smem_len = 0;
+		fbi->fix.smem_start = 0;
+		return -EBUSY;
+	}
+
+	debug("allocated fb @ paddr=0x%08X, size=%d.\n",
+		(uint32_t) fbi->fix.smem_start, fbi->fix.smem_len);
+
+	fbi->screen_size = fbi->fix.smem_len;
+
+#if CONFIG_IS_ENABLED(VIDEO)
+	gd->fb_base = fbi->fix.smem_start;
+#endif
+
+	/* Clear the screen */
+	memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
+
+	return 0;
+}
+
+static int mxcfb_unmap_video_memory(struct fb_info *fbi)
+{
+	fbi->screen_base = 0;
+	fbi->fix.smem_start = 0;
+	fbi->fix.smem_len = 0;
+	return 0;
+}
+
+/*
+ * Initializes the framebuffer information pointer. After allocating
+ * sufficient memory for the framebuffer structure, the fields are
+ * filled with custom information passed in from the configurable
+ * structures.  This includes information such as bits per pixel,
+ * color maps, screen width/height and RGBA offsets.
+ *
+ * @return      Framebuffer structure initialized with our information
+ */
+static struct fb_info *mxcfb_init_fbinfo(void)
+{
+#define BYTES_PER_LONG 4
+#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
+	struct fb_info *fbi;
+	struct mxcfb_info *mxcfbi;
+	char *p;
+	int size = sizeof(struct mxcfb_info) + PADDING +
+		sizeof(struct fb_info);
+
+	debug("%s: %d %d %d %d\n",
+		__func__,
+		PADDING,
+		size,
+		sizeof(struct mxcfb_info),
+		sizeof(struct fb_info));
+	/*
+	 * Allocate sufficient memory for the fb structure
+	 */
+
+	p = malloc(size);
+	if (!p)
+		return NULL;
+
+	memset(p, 0, size);
+
+	fbi = (struct fb_info *)p;
+	fbi->par = p + sizeof(struct fb_info) + PADDING;
+
+	mxcfbi = (struct mxcfb_info *)fbi->par;
+	debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n",
+		(unsigned int)fbi, (unsigned int)mxcfbi);
+
+	fbi->var.activate = FB_ACTIVATE_NOW;
+
+	fbi->flags = FBINFO_FLAG_DEFAULT;
+	fbi->pseudo_palette = mxcfbi->pseudo_palette;
+
+	return fbi;
+}
+
+/*
+ * Probe routine for the framebuffer driver. It is called during the
+ * driver binding process. The following functions are performed in
+ * this routine: Framebuffer initialization, Memory allocation and
+ * mapping, Framebuffer registration, IPU initialization.
+ *
+ * @return      Appropriate error code to the kernel common code
+ */
+static int mxcfb_probe(u32 interface_pix_fmt, uint8_t disp,
+			struct fb_videomode const *mode)
+{
+	struct fb_info *fbi;
+	struct mxcfb_info *mxcfbi;
+	int ret = 0;
+
+	/*
+	 * Initialize FB structures
+	 */
+	fbi = mxcfb_init_fbinfo();
+	if (!fbi) {
+		ret = -ENOMEM;
+		goto err0;
+	}
+	mxcfbi = (struct mxcfb_info *)fbi->par;
+
+	if (!g_dp_in_use) {
+		mxcfbi->ipu_ch = MEM_BG_SYNC;
+		mxcfbi->blank = FB_BLANK_UNBLANK;
+	} else {
+		mxcfbi->ipu_ch = MEM_DC_SYNC;
+		mxcfbi->blank = FB_BLANK_POWERDOWN;
+	}
+
+	mxcfbi->ipu_di = disp;
+
+	ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80);
+	ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0);
+	strcpy(fbi->fix.id, "DISP3 BG");
+
+	g_dp_in_use = 1;
+
+	mxcfb_info[mxcfbi->ipu_di] = fbi;
+
+	/* Need dummy values until real panel is configured */
+
+	mxcfbi->ipu_di_pix_fmt = interface_pix_fmt;
+	fb_videomode_to_var(&fbi->var, mode);
+	fbi->var.bits_per_pixel = 16;
+	fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8);
+	fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length;
+
+	mxcfb_check_var(&fbi->var, fbi);
+
+	/* Default Y virtual size is 2x panel size */
+	fbi->var.yres_virtual = fbi->var.yres * 2;
+
+	mxcfb_set_fix(fbi);
+
+	/* allocate fb first */
+	if (mxcfb_map_video_memory(fbi) < 0)
+		return -ENOMEM;
+
+	mxcfb_set_par(fbi);
+
+	panel.winSizeX = mode->xres;
+	panel.winSizeY = mode->yres;
+	panel.plnSizeX = mode->xres;
+	panel.plnSizeY = mode->yres;
+
+	panel.frameAdrs = (u32)fbi->screen_base;
+	panel.memSize = fbi->screen_size;
+
+	panel.gdfBytesPP = 2;
+	panel.gdfIndex = GDF_16BIT_565RGB;
+
+	ipu_dump_registers();
+
+	return 0;
+
+err0:
+	return ret;
+}
+
+void ipuv3_fb_shutdown(void)
+{
+	int i;
+	struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
+
+	if (!ipu_clk_enabled())
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) {
+		struct fb_info *fbi = mxcfb_info[i];
+		if (fbi) {
+			struct mxcfb_info *mxc_fbi = fbi->par;
+			ipu_disable_channel(mxc_fbi->ipu_ch);
+			ipu_uninit_channel(mxc_fbi->ipu_ch);
+		}
+	}
+	for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) {
+		__raw_writel(__raw_readl(&stat->int_stat[i]),
+			     &stat->int_stat[i]);
+	}
+}
+
+void *video_hw_init(void)
+{
+	int ret;
+
+	ret = ipu_probe();
+	if (ret)
+		puts("Error initializing IPU\n");
+
+	ret = mxcfb_probe(gpixfmt, gdisp, gmode);
+	debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs);
+	gd->fb_base = panel.frameAdrs;
+
+	return (void *)&panel;
+}
+
+int ipuv3_fb_init(struct fb_videomode const *mode,
+		  uint8_t disp,
+		  uint32_t pixfmt)
+{
+	gmode = mode;
+	gdisp = disp;
+	gpixfmt = pixfmt;
+
+	return 0;
+}
+
+#if CONFIG_IS_ENABLED(DM_VIDEO)
+enum {
+	/* Maximum display size we support */
+	LCD_MAX_WIDTH		= 1920,
+	LCD_MAX_HEIGHT		= 1080,
+	LCD_MAX_LOG2_BPP	= VIDEO_BPP16,
+};
+
+static int ipuv3_video_probe(struct udevice *dev)
+{
+	struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
+	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
+#if defined(CONFIG_DISPLAY)
+	struct udevice *disp_dev;
+#endif
+	struct udevice *panel_dev;
+	u32 fb_start, fb_end;
+	int ret;
+
+	debug("%s() plat: base 0x%lx, size 0x%x\n",
+	      __func__, plat->base, plat->size);
+
+	ret = ipu_probe();
+	if (ret)
+		return ret;
+
+	ret = ipu_displays_init();
+	if (ret < 0)
+		return ret;
+
+	ret = mxcfb_probe(gpixfmt, gdisp, gmode);
+	if (ret < 0)
+		return ret;
+
+#if defined(CONFIG_DISPLAY)
+	ret = uclass_first_device(UCLASS_DISPLAY, &disp_dev);
+	if (disp_dev) {
+		ret = display_enable(disp_dev, 16, NULL);
+		if (ret < 0)
+			return ret;
+	}
+#endif
+	ret = uclass_get_device(UCLASS_PANEL, 0, &panel_dev);
+	if (panel_dev)
+		panel_enable_backlight(panel_dev);
+
+	uc_priv->xsize = gmode->xres;
+	uc_priv->ysize = gmode->yres;
+	uc_priv->bpix = LCD_MAX_LOG2_BPP;
+
+	/* Enable dcache for the frame buffer */
+	fb_start = plat->base & ~(MMU_SECTION_SIZE - 1);
+	fb_end = plat->base + plat->size;
+	fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
+	mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
+					DCACHE_WRITEBACK);
+	video_set_flush_dcache(dev, true);
+	gd->fb_base = fb_start;
+
+	return 0;
+}
+
+struct ipuv3_video_priv {
+	ulong regs;
+};
+
+static int ipuv3_video_bind(struct udevice *dev)
+{
+	struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
+
+	plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
+		     (1 << VIDEO_BPP32) / 8;
+
+	return 0;
+}
+
+static const struct udevice_id ipuv3_video_ids[] = {
+	{ .compatible = "fsl,imx6q-ipu" },
+	{ .compatible = "fsl,imx53-ipu" },
+	{ }
+};
+
+U_BOOT_DRIVER(ipuv3_video) = {
+	.name	= "ipuv3_video",
+	.id	= UCLASS_VIDEO,
+	.of_match = ipuv3_video_ids,
+	.bind	= ipuv3_video_bind,
+	.probe	= ipuv3_video_probe,
+	.priv_auto_alloc_size = sizeof(struct ipuv3_video_priv),
+	.flags	= DM_FLAG_PRE_RELOC,
+};
+#endif /* CONFIG_DM_VIDEO */

source/bootloader/u-boot-2020.01/drivers/video/imx/mxcfb.h

@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Porting to u-boot:
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * Linux IPU driver for MX51:
+ *
+ * (C) Copyright 2004-2009 Freescale Semiconductor, Inc.
+ */
+
+#ifndef __ASM_ARCH_MXCFB_H__
+#define __ASM_ARCH_MXCFB_H__
+
+#define FB_SYNC_OE_LOW_ACT	0x80000000
+#define FB_SYNC_CLK_LAT_FALL	0x40000000
+#define FB_SYNC_DATA_INVERT	0x20000000
+#define FB_SYNC_CLK_IDLE_EN	0x10000000
+#define FB_SYNC_SHARP_MODE	0x08000000
+#define FB_SYNC_SWAP_RGB	0x04000000
+
+struct mxcfb_gbl_alpha {
+	int enable;
+	int alpha;
+};
+
+struct mxcfb_loc_alpha {
+	int enable;
+	int alpha_in_pixel;
+	unsigned long alpha_phy_addr0;
+	unsigned long alpha_phy_addr1;
+};
+
+struct mxcfb_color_key {
+	int enable;
+	__u32 color_key;
+};
+
+struct mxcfb_pos {
+	__u16 x;
+	__u16 y;
+};
+
+struct mxcfb_gamma {
+	int enable;
+	int constk[16];
+	int slopek[16];
+};
+
+#endif