/*
 * Copyright 2005-2009 Freescale Semiconductor, Inc.
 *
 * The code contained herein is licensed under the GNU Lesser General
 * Public License.  You may obtain a copy of the GNU Lesser General
 * Public License Version 2.1 or later at the following locations:
 *
 * http://www.opensource.org/licenses/lgpl-license.html
 * http://www.gnu.org/copyleft/lgpl.html
 */

#ifndef __DRM_IPU_H__
#define __DRM_IPU_H__

#include <io.h>
#include <fb.h>
#include <video/vpl.h>
#include <video/fourcc.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>

struct ipu_soc;

enum ipuv3_type {
	IPUV3EX,
	IPUV3M,
	IPUV3H,
};

void ipuwritel(const char *unit, uint32_t value, void __iomem *reg);
uint32_t ipureadl(void __iomem *reg);

/*
 * Bitfield of Display Interface signal polarities.
 */
struct ipu_di_signal_cfg {
	unsigned datamask_en: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;

	u16 width;
	u16 height;
	u16 h_start_width;
	u16 h_sync_width;
	u16 h_end_width;
	u16 v_start_width;
	u16 v_sync_width;
	u16 v_end_width;
	u32 v_to_h_sync;
	unsigned long pixelclock;
#define IPU_DI_CLKMODE_SYNC		(1 << 0)
#define IPU_DI_CLKMODE_EXT		(1 << 1)
#define IPU_DI_CLKMODE_NON_FRACTIONAL	(1 << 2)
	unsigned long clkflags;

	u8 hsync_pin;
	u8 vsync_pin;
};

enum ipu_color_space {
	IPUV3_COLORSPACE_RGB,
	IPUV3_COLORSPACE_YUV,
	IPUV3_COLORSPACE_UNKNOWN,
};

struct ipuv3_channel;

enum ipu_channel_irq {
	IPU_IRQ_EOF = 0,
	IPU_IRQ_NFACK = 64,
	IPU_IRQ_NFB4EOF = 128,
	IPU_IRQ_EOS = 192,
};

int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
		enum ipu_channel_irq irq);

#define IPU_IRQ_DP_SF_START		(448 + 2)
#define IPU_IRQ_DP_SF_END		(448 + 3)
#define IPU_IRQ_BG_SF_END		IPU_IRQ_DP_SF_END,
#define IPU_IRQ_DC_FC_0			(448 + 8)
#define IPU_IRQ_DC_FC_1			(448 + 9)
#define IPU_IRQ_DC_FC_2			(448 + 10)
#define IPU_IRQ_DC_FC_3			(448 + 11)
#define IPU_IRQ_DC_FC_4			(448 + 12)
#define IPU_IRQ_DC_FC_6			(448 + 13)
#define IPU_IRQ_VSYNC_PRE_0		(448 + 14)
#define IPU_IRQ_VSYNC_PRE_1		(448 + 15)

/*
 * IPU Image DMA Controller (idmac) functions
 */
struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned channel);
void ipu_idmac_put(struct ipuv3_channel *);

int ipu_idmac_enable_channel(struct ipuv3_channel *channel);
int ipu_idmac_disable_channel(struct ipuv3_channel *channel);
int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms);

void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel,
		bool doublebuffer);
void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num);

/*
 * IPU Display Controller (dc) functions
 */
struct ipu_dc;
struct ipu_di;
struct ipu_dc *ipu_dc_get(struct ipu_soc *ipu, int channel);
void ipu_dc_put(struct ipu_dc *dc);
int ipu_dc_init_sync(struct ipu_dc *dc, struct ipu_di *di, bool interlaced,
		u32 bus_format, u32 width);
void ipu_dc_enable_channel(struct ipu_dc *dc);
void ipu_dc_disable_channel(struct ipu_dc *dc);

/*
 * IPU Display Interface (di) functions
 */
struct ipu_di *ipu_di_get(struct ipu_soc *ipu, int disp);
void ipu_di_put(struct ipu_di *);
int ipu_di_disable(struct ipu_di *);
int ipu_di_enable(struct ipu_di *);
int ipu_di_get_num(struct ipu_di *);
int ipu_di_init_sync_panel(struct ipu_di *, struct ipu_di_signal_cfg *sig);

/*
 * IPU Display Multi FIFO Controller (dmfc) functions
 */
struct dmfc_channel;
int ipu_dmfc_enable_channel(struct dmfc_channel *dmfc);
void ipu_dmfc_disable_channel(struct dmfc_channel *dmfc);
int ipu_dmfc_alloc_bandwidth(struct dmfc_channel *dmfc,
		unsigned long bandwidth_mbs, int burstsize);
void ipu_dmfc_free_bandwidth(struct dmfc_channel *dmfc);
int ipu_dmfc_init_channel(struct dmfc_channel *dmfc, int width);
struct dmfc_channel *ipu_dmfc_get(struct ipu_soc *ipu, int ipuv3_channel);
void ipu_dmfc_put(struct dmfc_channel *dmfc);

/*
 * IPU Display Processor (dp) functions
 */
#define IPU_DP_FLOW_SYNC_BG	0
#define IPU_DP_FLOW_SYNC_FG	1
#define IPU_DP_FLOW_ASYNC0_BG	2
#define IPU_DP_FLOW_ASYNC0_FG	3
#define IPU_DP_FLOW_ASYNC1_BG	4
#define IPU_DP_FLOW_ASYNC1_FG	5

struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow);
void ipu_dp_put(struct ipu_dp *);
int ipu_dp_enable_channel(struct ipu_dp *dp);
void ipu_dp_disable_channel(struct ipu_dp *dp);
int ipu_dp_setup_channel(struct ipu_dp *dp,
		enum ipu_color_space in, enum ipu_color_space out);
int ipu_dp_set_window_pos(struct ipu_dp *, u16 x_pos, u16 y_pos);
int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable, u8 alpha,
		bool bg_chan);

#define IPU_CPMEM_WORD(word, ofs, size) ((((word) * 160 + (ofs)) << 8) | (size))

#define IPU_FIELD_UBO		IPU_CPMEM_WORD(0, 46, 22)
#define IPU_FIELD_VBO		IPU_CPMEM_WORD(0, 68, 22)
#define IPU_FIELD_IOX		IPU_CPMEM_WORD(0, 90, 4)
#define IPU_FIELD_RDRW		IPU_CPMEM_WORD(0, 94, 1)
#define IPU_FIELD_SO		IPU_CPMEM_WORD(0, 113, 1)
#define IPU_FIELD_SLY		IPU_CPMEM_WORD(1, 102, 14)
#define IPU_FIELD_SLUV		IPU_CPMEM_WORD(1, 128, 14)

#define IPU_FIELD_XV		IPU_CPMEM_WORD(0, 0, 10)
#define IPU_FIELD_YV		IPU_CPMEM_WORD(0, 10, 9)
#define IPU_FIELD_XB		IPU_CPMEM_WORD(0, 19, 13)
#define IPU_FIELD_YB		IPU_CPMEM_WORD(0, 32, 12)
#define IPU_FIELD_NSB_B		IPU_CPMEM_WORD(0, 44, 1)
#define IPU_FIELD_CF		IPU_CPMEM_WORD(0, 45, 1)
#define IPU_FIELD_SX		IPU_CPMEM_WORD(0, 46, 12)
#define IPU_FIELD_SY		IPU_CPMEM_WORD(0, 58, 11)
#define IPU_FIELD_NS		IPU_CPMEM_WORD(0, 69, 10)
#define IPU_FIELD_SDX		IPU_CPMEM_WORD(0, 79, 7)
#define IPU_FIELD_SM		IPU_CPMEM_WORD(0, 86, 10)
#define IPU_FIELD_SCC		IPU_CPMEM_WORD(0, 96, 1)
#define IPU_FIELD_SCE		IPU_CPMEM_WORD(0, 97, 1)
#define IPU_FIELD_SDY		IPU_CPMEM_WORD(0, 98, 7)
#define IPU_FIELD_SDRX		IPU_CPMEM_WORD(0, 105, 1)
#define IPU_FIELD_SDRY		IPU_CPMEM_WORD(0, 106, 1)
#define IPU_FIELD_BPP		IPU_CPMEM_WORD(0, 107, 3)
#define IPU_FIELD_DEC_SEL	IPU_CPMEM_WORD(0, 110, 2)
#define IPU_FIELD_DIM		IPU_CPMEM_WORD(0, 112, 1)
#define IPU_FIELD_BNDM		IPU_CPMEM_WORD(0, 114, 3)
#define IPU_FIELD_BM		IPU_CPMEM_WORD(0, 117, 2)
#define IPU_FIELD_ROT		IPU_CPMEM_WORD(0, 119, 1)
#define IPU_FIELD_HF		IPU_CPMEM_WORD(0, 120, 1)
#define IPU_FIELD_VF		IPU_CPMEM_WORD(0, 121, 1)
#define IPU_FIELD_THE		IPU_CPMEM_WORD(0, 122, 1)
#define IPU_FIELD_CAP		IPU_CPMEM_WORD(0, 123, 1)
#define IPU_FIELD_CAE		IPU_CPMEM_WORD(0, 124, 1)
#define IPU_FIELD_FW		IPU_CPMEM_WORD(0, 125, 13)
#define IPU_FIELD_FH		IPU_CPMEM_WORD(0, 138, 12)
#define IPU_FIELD_EBA0		IPU_CPMEM_WORD(1, 0, 29)
#define IPU_FIELD_EBA1		IPU_CPMEM_WORD(1, 29, 29)
#define IPU_FIELD_ILO		IPU_CPMEM_WORD(1, 58, 20)
#define IPU_FIELD_NPB		IPU_CPMEM_WORD(1, 78, 7)
#define IPU_FIELD_PFS		IPU_CPMEM_WORD(1, 85, 4)
#define IPU_FIELD_ALU		IPU_CPMEM_WORD(1, 89, 1)
#define IPU_FIELD_ALBM		IPU_CPMEM_WORD(1, 90, 3)
#define IPU_FIELD_ID		IPU_CPMEM_WORD(1, 93, 2)
#define IPU_FIELD_TH		IPU_CPMEM_WORD(1, 95, 7)
#define IPU_FIELD_SL		IPU_CPMEM_WORD(1, 102, 14)
#define IPU_FIELD_WID0		IPU_CPMEM_WORD(1, 116, 3)
#define IPU_FIELD_WID1		IPU_CPMEM_WORD(1, 119, 3)
#define IPU_FIELD_WID2		IPU_CPMEM_WORD(1, 122, 3)
#define IPU_FIELD_WID3		IPU_CPMEM_WORD(1, 125, 3)
#define IPU_FIELD_OFS0		IPU_CPMEM_WORD(1, 128, 5)
#define IPU_FIELD_OFS1		IPU_CPMEM_WORD(1, 133, 5)
#define IPU_FIELD_OFS2		IPU_CPMEM_WORD(1, 138, 5)
#define IPU_FIELD_OFS3		IPU_CPMEM_WORD(1, 143, 5)
#define IPU_FIELD_SXYS		IPU_CPMEM_WORD(1, 148, 1)
#define IPU_FIELD_CRE		IPU_CPMEM_WORD(1, 149, 1)
#define IPU_FIELD_DEC_SEL2	IPU_CPMEM_WORD(1, 150, 1)

struct ipu_cpmem_word {
	u32 data[5];
	u32 res[3];
};

struct ipu_ch_param {
	struct ipu_cpmem_word word[2];
};

void ipu_ch_param_write_field(struct ipu_ch_param __iomem *base, u32 wbs, u32 v);
u32 ipu_ch_param_read_field(struct ipu_ch_param __iomem *base, u32 wbs);
struct ipu_ch_param __iomem *ipu_get_cpmem(struct ipuv3_channel *channel);
void ipu_ch_param_dump(struct ipu_ch_param __iomem *p);

static inline void ipu_ch_param_zero(struct ipu_ch_param __iomem *p)
{
	int i;
	void __iomem *base = p;

	for (i = 0; i < sizeof(*p) / sizeof(u32); i++)
		ipuwritel("chp", 0, base + i * sizeof(u32));
}

static inline void ipu_cpmem_set_buffer(struct ipu_ch_param __iomem *p,
		int bufnum, dma_addr_t buf)
{
	if (bufnum)
		ipu_ch_param_write_field(p, IPU_FIELD_EBA1, buf >> 3);
	else
		ipu_ch_param_write_field(p, IPU_FIELD_EBA0, buf >> 3);
}

static inline void ipu_cpmem_set_resolution(struct ipu_ch_param __iomem *p,
		int xres, int yres)
{
	ipu_ch_param_write_field(p, IPU_FIELD_FW, xres - 1);
	ipu_ch_param_write_field(p, IPU_FIELD_FH, yres - 1);
}

static inline void ipu_cpmem_set_stride(struct ipu_ch_param __iomem *p,
		int stride)
{
	ipu_ch_param_write_field(p, IPU_FIELD_SLY, stride - 1);
}

void ipu_cpmem_set_high_priority(struct ipuv3_channel *channel);

struct ipu_rgb {
	struct fb_bitfield	red;
	struct fb_bitfield	green;
	struct fb_bitfield	blue;
	struct fb_bitfield	transp;
	int			bits_per_pixel;
};

struct ipu_rgb *drm_fourcc_to_rgb(u32 drm_fourcc);

int ipu_cpmem_set_format_passthrough(struct ipu_ch_param __iomem *p,
		int width);

int ipu_cpmem_set_format_rgb(struct ipu_ch_param __iomem *,
		const struct ipu_rgb *rgb);

static inline void ipu_cpmem_interlaced_scan(struct ipu_ch_param *p,
		int stride)
{
	ipu_ch_param_write_field(p, IPU_FIELD_SO, 1);
	ipu_ch_param_write_field(p, IPU_FIELD_ILO, stride / 8);
	ipu_ch_param_write_field(p, IPU_FIELD_SLY, (stride * 2) - 1);
};

void ipu_cpmem_set_yuv_planar(struct ipu_ch_param __iomem *p, u32 pixel_format,
			int stride, int height);
void ipu_cpmem_set_yuv_interleaved(struct ipu_ch_param __iomem *p,
				   u32 pixel_format);
void ipu_cpmem_set_yuv_planar_full(struct ipu_ch_param __iomem *p,
		u32 pixel_format, int stride, int u_offset, int v_offset);
int ipu_cpmem_set_fmt(struct ipu_ch_param __iomem *cpmem, u32 pixelformat);

enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);
enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);

static inline void ipu_cpmem_set_burstsize(struct ipu_ch_param __iomem *p,
		int burstsize)
{
	ipu_ch_param_write_field(p, IPU_FIELD_NPB, burstsize - 1);
};

struct ipu_client_platformdata {
	int di;
	int dc;
	int dp;
	int dmfc;
	int dma[2];
	struct device_node *device_node;
};

struct ipu_di_mode {
	u32 di_clkflags;
	u32 bus_format;
};

#define IMX_IPU_VPL_DI_MODE	0x12660001

#endif /* __DRM_IPU_H__ */
