/*
 * Copyright (C) 2009 Francisco Jerez.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef __DRM_I2C_CH7006_PRIV_H__
#define __DRM_I2C_CH7006_PRIV_H__

#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include <drm/drm_probe_helper.h>
#include <drm/i2c/ch7006.h>

typedef int64_t fixed;
#define fixed1 (1LL << 32)

enum ch7006_tv_norm {
        TV_NORM_PAL,
        TV_NORM_PAL_M,
        TV_NORM_PAL_N,
        TV_NORM_PAL_NC,
        TV_NORM_PAL_60,
        TV_NORM_NTSC_M,
        TV_NORM_NTSC_J,
        NUM_TV_NORMS
};

struct ch7006_tv_norm_info {
        fixed vrefresh;
        int vdisplay;
        int vtotal;
        int hvirtual;

        fixed subc_freq;
        fixed black_level;

        uint32_t dispmode;
        int voffset;
};

struct ch7006_mode {
        struct drm_display_mode mode;

        int enc_hdisp;
        int enc_vdisp;

        fixed subc_coeff;
        uint32_t dispmode;

        uint32_t valid_scales;
        uint32_t valid_norms;
};

struct ch7006_state {
        uint8_t regs[0x26];
};

struct ch7006_priv {
        struct ch7006_encoder_params params;
        const struct ch7006_mode *mode;

        struct ch7006_state state;
        struct ch7006_state saved_state;

        struct drm_property *scale_property;

        int select_subconnector;
        int subconnector;
        int hmargin;
        int vmargin;
        enum ch7006_tv_norm norm;
        int brightness;
        int contrast;
        int flicker;
        int scale;

        int chip_version;
        int last_dpms;
};

#define to_ch7006_priv(x) \
        ((struct ch7006_priv *)to_encoder_slave(x)->slave_priv)

extern int ch7006_debug;
extern char *ch7006_tv_norm;
extern int ch7006_scale;

extern const char * const ch7006_tv_norm_names[];
extern const struct ch7006_tv_norm_info ch7006_tv_norms[];
extern const struct ch7006_mode ch7006_modes[];

const struct ch7006_mode *ch7006_lookup_mode(struct drm_encoder *encoder,
                                             const struct drm_display_mode *drm_mode);

void ch7006_setup_levels(struct drm_encoder *encoder);
void ch7006_setup_subcarrier(struct drm_encoder *encoder);
void ch7006_setup_pll(struct drm_encoder *encoder);
void ch7006_setup_power_state(struct drm_encoder *encoder);
void ch7006_setup_properties(struct drm_encoder *encoder);

void ch7006_write(struct i2c_client *client, uint8_t addr, uint8_t val);
uint8_t ch7006_read(struct i2c_client *client, uint8_t addr);

void ch7006_state_load(struct i2c_client *client,
                       struct ch7006_state *state);
void ch7006_state_save(struct i2c_client *client,
                       struct ch7006_state *state);

/* Some helper macros */

#define ch7006_dbg(client, format, ...) do {                            \
                if (ch7006_debug)                                       \
                        dev_printk(KERN_DEBUG, &client->dev,            \
                                   "%s: " format, __func__, ## __VA_ARGS__); \
        } while (0)
#define ch7006_info(client, format, ...) \
                                dev_info(&client->dev, format, __VA_ARGS__)
#define ch7006_err(client, format, ...) \
                                dev_err(&client->dev, format, __VA_ARGS__)

#define __mask(src, bitfield) \
                (((2 << (1 ? bitfield)) - 1) & ~((1 << (0 ? bitfield)) - 1))
#define mask(bitfield) __mask(bitfield)

#define __bitf(src, bitfield, x) \
                (((x) >> (src) << (0 ? bitfield)) &  __mask(src, bitfield))
#define bitf(bitfield, x) __bitf(bitfield, x)
#define bitfs(bitfield, s) __bitf(bitfield, bitfield##_##s)
#define setbitf(state, reg, bitfield, x)                                \
        state->regs[reg] = (state->regs[reg] & ~mask(reg##_##bitfield)) \
                | bitf(reg##_##bitfield, x)

#define __unbitf(src, bitfield, x) \
                ((x & __mask(src, bitfield)) >> (0 ? bitfield) << (src))
#define unbitf(bitfield, x) __unbitf(bitfield, x)

static inline int interpolate(int y0, int y1, int y2, int x)
{
        return y1 + (x < 50 ? y1 - y0 : y2 - y1) * (x - 50) / 50;
}

static inline int32_t round_fixed(fixed x)
{
        return (x + fixed1/2) >> 32;
}

#define ch7006_load_reg(client, state, reg) ch7006_write(client, reg, state->regs[reg])
#define ch7006_save_reg(client, state, reg) state->regs[reg] = ch7006_read(client, reg)

/* Fixed hardware specs */

#define CH7006_FREQ0                            14318
#define CH7006_MAXN                             650
#define CH7006_MAXM                             315

/* Register definitions */

#define CH7006_DISPMODE                         0x00
#define CH7006_DISPMODE_INPUT_RES               0, 7:5
#define CH7006_DISPMODE_INPUT_RES_512x384       0x0
#define CH7006_DISPMODE_INPUT_RES_720x400       0x1
#define CH7006_DISPMODE_INPUT_RES_640x400       0x2
#define CH7006_DISPMODE_INPUT_RES_640x480       0x3
#define CH7006_DISPMODE_INPUT_RES_800x600       0x4
#define CH7006_DISPMODE_INPUT_RES_NATIVE        0x5
#define CH7006_DISPMODE_OUTPUT_STD              0, 4:3
#define CH7006_DISPMODE_OUTPUT_STD_PAL          0x0
#define CH7006_DISPMODE_OUTPUT_STD_NTSC         0x1
#define CH7006_DISPMODE_OUTPUT_STD_PAL_M        0x2
#define CH7006_DISPMODE_OUTPUT_STD_NTSC_J       0x3
#define CH7006_DISPMODE_SCALING_RATIO           0, 2:0
#define CH7006_DISPMODE_SCALING_RATIO_5_4       0x0
#define CH7006_DISPMODE_SCALING_RATIO_1_1       0x1
#define CH7006_DISPMODE_SCALING_RATIO_7_8       0x2
#define CH7006_DISPMODE_SCALING_RATIO_5_6       0x3
#define CH7006_DISPMODE_SCALING_RATIO_3_4       0x4
#define CH7006_DISPMODE_SCALING_RATIO_7_10      0x5

#define CH7006_FFILTER                          0x01
#define CH7006_FFILTER_TEXT                     0, 5:4
#define CH7006_FFILTER_LUMA                     0, 3:2
#define CH7006_FFILTER_CHROMA                   0, 1:0
#define CH7006_FFILTER_CHROMA_NO_DCRAWL         0x3

#define CH7006_BWIDTH                           0x03
#define CH7006_BWIDTH_5L_FFILER                 (1 << 7)
#define CH7006_BWIDTH_CVBS_NO_CHROMA            (1 << 6)
#define CH7006_BWIDTH_CHROMA                    0, 5:4
#define CH7006_BWIDTH_SVIDEO_YPEAK              (1 << 3)
#define CH7006_BWIDTH_SVIDEO_LUMA               0, 2:1
#define CH7006_BWIDTH_CVBS_LUMA                 0, 0:0

#define CH7006_INPUT_FORMAT                     0x04
#define CH7006_INPUT_FORMAT_DAC_GAIN            (1 << 6)
#define CH7006_INPUT_FORMAT_RGB_PASS_THROUGH    (1 << 5)
#define CH7006_INPUT_FORMAT_FORMAT              0, 3:0
#define CH7006_INPUT_FORMAT_FORMAT_RGB16        0x0
#define CH7006_INPUT_FORMAT_FORMAT_YCrCb24m16   0x1
#define CH7006_INPUT_FORMAT_FORMAT_RGB24m16     0x2
#define CH7006_INPUT_FORMAT_FORMAT_RGB15        0x3
#define CH7006_INPUT_FORMAT_FORMAT_RGB24m12C    0x4
#define CH7006_INPUT_FORMAT_FORMAT_RGB24m12I    0x5
#define CH7006_INPUT_FORMAT_FORMAT_RGB24m8      0x6
#define CH7006_INPUT_FORMAT_FORMAT_RGB16m8      0x7
#define CH7006_INPUT_FORMAT_FORMAT_RGB15m8      0x8
#define CH7006_INPUT_FORMAT_FORMAT_YCrCb24m8    0x9

#define CH7006_CLKMODE                          0x06
#define CH7006_CLKMODE_SUBC_LOCK                (1 << 7)
#define CH7006_CLKMODE_MASTER                   (1 << 6)
#define CH7006_CLKMODE_POS_EDGE                 (1 << 4)
#define CH7006_CLKMODE_XCM                      0, 3:2
#define CH7006_CLKMODE_PCM                      0, 1:0

#define CH7006_START_ACTIVE                     0x07
#define CH7006_START_ACTIVE_0                   0, 7:0

#define CH7006_POV                              0x08
#define CH7006_POV_START_ACTIVE_8               8, 2:2
#define CH7006_POV_HPOS_8                       8, 1:1
#define CH7006_POV_VPOS_8                       8, 0:0

#define CH7006_BLACK_LEVEL                      0x09
#define CH7006_BLACK_LEVEL_0                    0, 7:0

#define CH7006_HPOS                             0x0a
#define CH7006_HPOS_0                           0, 7:0

#define CH7006_VPOS                             0x0b
#define CH7006_VPOS_0                           0, 7:0

#define CH7006_INPUT_SYNC                       0x0d
#define CH7006_INPUT_SYNC_EMBEDDED              (1 << 3)
#define CH7006_INPUT_SYNC_OUTPUT                (1 << 2)
#define CH7006_INPUT_SYNC_PVSYNC                (1 << 1)
#define CH7006_INPUT_SYNC_PHSYNC                (1 << 0)

#define CH7006_POWER                            0x0e
#define CH7006_POWER_SCART                      (1 << 4)
#define CH7006_POWER_RESET                      (1 << 3)
#define CH7006_POWER_LEVEL                      0, 2:0
#define CH7006_POWER_LEVEL_CVBS_OFF             0x0
#define CH7006_POWER_LEVEL_POWER_OFF            0x1
#define CH7006_POWER_LEVEL_SVIDEO_OFF           0x2
#define CH7006_POWER_LEVEL_NORMAL               0x3
#define CH7006_POWER_LEVEL_FULL_POWER_OFF       0x4

#define CH7006_DETECT                           0x10
#define CH7006_DETECT_SVIDEO_Y_TEST             (1 << 3)
#define CH7006_DETECT_SVIDEO_C_TEST             (1 << 2)
#define CH7006_DETECT_CVBS_TEST                 (1 << 1)
#define CH7006_DETECT_SENSE                     (1 << 0)

#define CH7006_CONTRAST                         0x11
#define CH7006_CONTRAST_0                       0, 2:0

#define CH7006_PLLOV                            0x13
#define CH7006_PLLOV_N_8                        8, 2:1
#define CH7006_PLLOV_M_8                        8, 0:0

#define CH7006_PLLM                             0x14
#define CH7006_PLLM_0                           0, 7:0

#define CH7006_PLLN                             0x15
#define CH7006_PLLN_0                           0, 7:0

#define CH7006_BCLKOUT                          0x17

#define CH7006_SUBC_INC0                        0x18
#define CH7006_SUBC_INC0_28                     28, 3:0

#define CH7006_SUBC_INC1                        0x19
#define CH7006_SUBC_INC1_24                     24, 3:0

#define CH7006_SUBC_INC2                        0x1a
#define CH7006_SUBC_INC2_20                     20, 3:0

#define CH7006_SUBC_INC3                        0x1b
#define CH7006_SUBC_INC3_GPIO1_VAL              (1 << 7)
#define CH7006_SUBC_INC3_GPIO0_VAL              (1 << 6)
#define CH7006_SUBC_INC3_POUT_3_3V              (1 << 5)
#define CH7006_SUBC_INC3_POUT_INV               (1 << 4)
#define CH7006_SUBC_INC3_16                     16, 3:0

#define CH7006_SUBC_INC4                        0x1c
#define CH7006_SUBC_INC4_GPIO1_IN               (1 << 7)
#define CH7006_SUBC_INC4_GPIO0_IN               (1 << 6)
#define CH7006_SUBC_INC4_DS_INPUT               (1 << 4)
#define CH7006_SUBC_INC4_12                     12, 3:0

#define CH7006_SUBC_INC5                        0x1d
#define CH7006_SUBC_INC5_8                      8, 3:0

#define CH7006_SUBC_INC6                        0x1e
#define CH7006_SUBC_INC6_4                      4, 3:0

#define CH7006_SUBC_INC7                        0x1f
#define CH7006_SUBC_INC7_0                      0, 3:0

#define CH7006_PLL_CONTROL                      0x20
#define CH7006_PLL_CONTROL_CPI                  (1 << 5)
#define CH7006_PLL_CONTROL_CAPACITOR            (1 << 4)
#define CH7006_PLL_CONTROL_7STAGES              (1 << 3)
#define CH7006_PLL_CONTROL_DIGITAL_5V           (1 << 2)
#define CH7006_PLL_CONTROL_ANALOG_5V            (1 << 1)
#define CH7006_PLL_CONTROL_MEMORY_5V            (1 << 0)

#define CH7006_CALC_SUBC_INC0                   0x21
#define CH7006_CALC_SUBC_INC0_24                24, 4:3
#define CH7006_CALC_SUBC_INC0_HYST              0, 2:1
#define CH7006_CALC_SUBC_INC0_AUTO              (1 << 0)

#define CH7006_CALC_SUBC_INC1                   0x22
#define CH7006_CALC_SUBC_INC1_16                16, 7:0

#define CH7006_CALC_SUBC_INC2                   0x23
#define CH7006_CALC_SUBC_INC2_8                 8, 7:0

#define CH7006_CALC_SUBC_INC3                   0x24
#define CH7006_CALC_SUBC_INC3_0                 0, 7:0

#define CH7006_VERSION_ID                       0x25

#endif