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Diffstat (limited to 'drivers/video/ipu.h')
| -rw-r--r-- | drivers/video/ipu.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/video/ipu.h b/drivers/video/ipu.h new file mode 100644 index 0000000..d8bc287 --- /dev/null +++ b/drivers/video/ipu.h @@ -0,0 +1,321 @@ +/* + * 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. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_ARCH_IPU_H__ +#define __ASM_ARCH_IPU_H__ + +#include <linux/types.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 Pixel format definitions */ +#define fourcc(a, b, c, d)\ + (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24)) + +/* + * Pixel formats are defined with ASCII FOURCC code. The pixel format codes are + * the same used by V4L2 API. + */ + +#define IPU_PIX_FMT_GENERIC fourcc('I', 'P', 'U', '0') +#define IPU_PIX_FMT_GENERIC_32 fourcc('I', 'P', 'U', '1') +#define IPU_PIX_FMT_LVDS666 fourcc('L', 'V', 'D', '6') +#define IPU_PIX_FMT_LVDS888 fourcc('L', 'V', 'D', '8') + +#define IPU_PIX_FMT_RGB332 fourcc('R', 'G', 'B', '1') /*< 8 RGB-3-3-2 */ +#define IPU_PIX_FMT_RGB555 fourcc('R', 'G', 'B', 'O') /*< 16 RGB-5-5-5 */ +#define IPU_PIX_FMT_RGB565 fourcc('R', 'G', 'B', 'P') /*< 1 6 RGB-5-6-5 */ +#define IPU_PIX_FMT_RGB666 fourcc('R', 'G', 'B', '6') /*< 18 RGB-6-6-6 */ +#define IPU_PIX_FMT_BGR666 fourcc('B', 'G', 'R', '6') /*< 18 BGR-6-6-6 */ +#define IPU_PIX_FMT_BGR24 fourcc('B', 'G', 'R', '3') /*< 24 BGR-8-8-8 */ +#define IPU_PIX_FMT_RGB24 fourcc('R', 'G', 'B', '3') /*< 24 RGB-8-8-8 */ +#define IPU_PIX_FMT_BGR32 fourcc('B', 'G', 'R', '4') /*< 32 BGR-8-8-8-8 */ +#define IPU_PIX_FMT_BGRA32 fourcc('B', 'G', 'R', 'A') /*< 32 BGR-8-8-8-8 */ +#define IPU_PIX_FMT_RGB32 fourcc('R', 'G', 'B', '4') /*< 32 RGB-8-8-8-8 */ +#define IPU_PIX_FMT_RGBA32 fourcc('R', 'G', 'B', 'A') /*< 32 RGB-8-8-8-8 */ +#define IPU_PIX_FMT_ABGR32 fourcc('A', 'B', 'G', 'R') /*< 32 ABGR-8-8-8-8 */ + +/* YUV Interleaved Formats */ +#define IPU_PIX_FMT_YUYV fourcc('Y', 'U', 'Y', 'V') /*< 16 YUV 4:2:2 */ +#define IPU_PIX_FMT_UYVY fourcc('U', 'Y', 'V', 'Y') /*< 16 YUV 4:2:2 */ +#define IPU_PIX_FMT_Y41P fourcc('Y', '4', '1', 'P') /*< 12 YUV 4:1:1 */ +#define IPU_PIX_FMT_YUV444 fourcc('Y', '4', '4', '4') /*< 24 YUV 4:4:4 */ + +/* two planes -- one Y, one Cb + Cr interleaved */ +#define IPU_PIX_FMT_NV12 fourcc('N', 'V', '1', '2') /* 12 Y/CbCr 4:2:0 */ + +#define IPU_PIX_FMT_GREY fourcc('G', 'R', 'E', 'Y') /*< 8 Greyscale */ +#define IPU_PIX_FMT_YVU410P fourcc('Y', 'V', 'U', '9') /*< 9 YVU 4:1:0 */ +#define IPU_PIX_FMT_YUV410P fourcc('Y', 'U', 'V', '9') /*< 9 YUV 4:1:0 */ +#define IPU_PIX_FMT_YVU420P fourcc('Y', 'V', '1', '2') /*< 12 YVU 4:2:0 */ +#define IPU_PIX_FMT_YUV420P fourcc('I', '4', '2', '0') /*< 12 YUV 4:2:0 */ +#define IPU_PIX_FMT_YUV420P2 fourcc('Y', 'U', '1', '2') /*< 12 YUV 4:2:0 */ +#define IPU_PIX_FMT_YVU422P fourcc('Y', 'V', '1', '6') /*< 16 YVU 4:2:2 */ +#define IPU_PIX_FMT_YUV422P fourcc('4', '2', '2', 'P') /*< 16 YUV 4:2:2 */ + +/* + * 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; + +/* + * 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); + +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 |