/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( C ) 2014 Traphandler
* Copyright ( C ) 2014 Free Electrons
* Copyright ( C ) 2014 Atmel
*
* Author : Jean - Jacques Hiblot < jjhiblot @ traphandler . com >
* Author : Boris BREZILLON < boris . brezillon @ free - electrons . com >
*/
#ifndef DRM_ATMEL_HLCDC_H
#define DRM_ATMEL_HLCDC_H
#include <linux/regmap.h>
#include <drm/drm_plane.h>
/* LCD controller common registers */
#define ATMEL_HLCDC_LAYER_CHER 0 x0
#define ATMEL_HLCDC_LAYER_CHDR 0 x4
#define ATMEL_HLCDC_LAYER_CHSR 0 x8
#define ATMEL_HLCDC_LAYER_EN BIT(0 )
#define ATMEL_HLCDC_LAYER_UPDATE BIT(1 )
#define ATMEL_HLCDC_LAYER_A2Q BIT(2 )
#define ATMEL_HLCDC_LAYER_RST BIT(8 )
#define ATMEL_HLCDC_LAYER_IER 0 xc
#define ATMEL_HLCDC_LAYER_IDR 0 x10
#define ATMEL_HLCDC_LAYER_IMR 0 x14
#define ATMEL_HLCDC_LAYER_ISR 0 x18
#define ATMEL_HLCDC_LAYER_DFETCH BIT(0 )
#define ATMEL_HLCDC_LAYER_LFETCH BIT(1 )
#define ATMEL_HLCDC_LAYER_DMA_IRQ(p) BIT(2 + (8 * (p)))
#define ATMEL_HLCDC_LAYER_DSCR_IRQ(p) BIT(3 + (8 * (p)))
#define ATMEL_HLCDC_LAYER_ADD_IRQ(p) BIT(4 + (8 * (p)))
#define ATMEL_HLCDC_LAYER_DONE_IRQ(p) BIT(5 + (8 * (p)))
#define ATMEL_HLCDC_LAYER_OVR_IRQ(p) BIT(6 + (8 * (p)))
#define ATMEL_HLCDC_LAYER_PLANE_HEAD(p) (((p) * 0 x10) + 0 x1c)
#define ATMEL_HLCDC_LAYER_PLANE_ADDR(p) (((p) * 0 x10) + 0 x20)
#define ATMEL_HLCDC_LAYER_PLANE_CTRL(p) (((p) * 0 x10) + 0 x24)
#define ATMEL_HLCDC_LAYER_PLANE_NEXT(p) (((p) * 0 x10) + 0 x28)
#define ATMEL_HLCDC_LAYER_DMA_CFG 0
#define ATMEL_HLCDC_LAYER_DMA_SIF BIT(0 )
#define ATMEL_HLCDC_LAYER_DMA_BLEN_MASK GENMASK(5 , 4 )
#define ATMEL_HLCDC_LAYER_DMA_BLEN_SINGLE (0 << 4 )
#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR4 (1 << 4 )
#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR8 (2 << 4 )
#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 (3 << 4 )
#define ATMEL_HLCDC_LAYER_DMA_DLBO BIT(8 )
#define ATMEL_HLCDC_LAYER_DMA_ROTDIS BIT(12 )
#define ATMEL_HLCDC_LAYER_DMA_LOCKDIS BIT(13 )
#define ATMEL_HLCDC_LAYER_FORMAT_CFG 1
#define ATMEL_HLCDC_LAYER_RGB (0 << 0 )
#define ATMEL_HLCDC_LAYER_CLUT (1 << 0 )
#define ATMEL_HLCDC_LAYER_YUV (2 << 0 )
#define ATMEL_HLCDC_RGB_MODE(m) \
(ATMEL_HLCDC_LAYER_RGB | (((m) & 0 xf) << 4 ))
#define ATMEL_HLCDC_CLUT_MODE(m) \
(ATMEL_HLCDC_LAYER_CLUT | (((m) & 0 x3) << 8 ))
#define ATMEL_HLCDC_YUV_MODE(m) \
(ATMEL_HLCDC_LAYER_YUV | (((m) & 0 xf) << 12 ))
#define ATMEL_HLCDC_YUV422ROT BIT(16 )
#define ATMEL_HLCDC_YUV422SWP BIT(17 )
#define ATMEL_HLCDC_DSCALEOPT BIT(20 )
#define ATMEL_HLCDC_C1_MODE ATMEL_HLCDC_CLUT_MODE(0 )
#define ATMEL_HLCDC_C2_MODE ATMEL_HLCDC_CLUT_MODE(1 )
#define ATMEL_HLCDC_C4_MODE ATMEL_HLCDC_CLUT_MODE(2 )
#define ATMEL_HLCDC_C8_MODE ATMEL_HLCDC_CLUT_MODE(3 )
#define ATMEL_HLCDC_XRGB4444_MODE ATMEL_HLCDC_RGB_MODE(0 )
#define ATMEL_HLCDC_ARGB4444_MODE ATMEL_HLCDC_RGB_MODE(1 )
#define ATMEL_HLCDC_RGBA4444_MODE ATMEL_HLCDC_RGB_MODE(2 )
#define ATMEL_HLCDC_RGB565_MODE ATMEL_HLCDC_RGB_MODE(3 )
#define ATMEL_HLCDC_ARGB1555_MODE ATMEL_HLCDC_RGB_MODE(4 )
#define ATMEL_HLCDC_XRGB8888_MODE ATMEL_HLCDC_RGB_MODE(9 )
#define ATMEL_HLCDC_RGB888_MODE ATMEL_HLCDC_RGB_MODE(10 )
#define ATMEL_HLCDC_ARGB8888_MODE ATMEL_HLCDC_RGB_MODE(12 )
#define ATMEL_HLCDC_RGBA8888_MODE ATMEL_HLCDC_RGB_MODE(13 )
#define ATMEL_HLCDC_AYUV_MODE ATMEL_HLCDC_YUV_MODE(0 )
#define ATMEL_HLCDC_YUYV_MODE ATMEL_HLCDC_YUV_MODE(1 )
#define ATMEL_HLCDC_UYVY_MODE ATMEL_HLCDC_YUV_MODE(2 )
#define ATMEL_HLCDC_YVYU_MODE ATMEL_HLCDC_YUV_MODE(3 )
#define ATMEL_HLCDC_VYUY_MODE ATMEL_HLCDC_YUV_MODE(4 )
#define ATMEL_HLCDC_NV61_MODE ATMEL_HLCDC_YUV_MODE(5 )
#define ATMEL_HLCDC_YUV422_MODE ATMEL_HLCDC_YUV_MODE(6 )
#define ATMEL_HLCDC_NV21_MODE ATMEL_HLCDC_YUV_MODE(7 )
#define ATMEL_HLCDC_YUV420_MODE ATMEL_HLCDC_YUV_MODE(8 )
#define ATMEL_HLCDC_LAYER_POS(x, y) ((x) | ((y) << 16 ))
#define ATMEL_HLCDC_LAYER_SIZE(w, h) (((w) - 1 ) | (((h) - 1 ) << 16 ))
#define ATMEL_HLCDC_LAYER_CRKEY BIT(0 )
#define ATMEL_HLCDC_LAYER_INV BIT(1 )
#define ATMEL_HLCDC_LAYER_ITER2BL BIT(2 )
#define ATMEL_HLCDC_LAYER_ITER BIT(3 )
#define ATMEL_HLCDC_LAYER_REVALPHA BIT(4 )
#define ATMEL_HLCDC_LAYER_GAEN BIT(5 )
#define ATMEL_HLCDC_LAYER_LAEN BIT(6 )
#define ATMEL_HLCDC_LAYER_OVR BIT(7 )
#define ATMEL_HLCDC_LAYER_DMA BIT(8 )
#define ATMEL_HLCDC_LAYER_REP BIT(9 )
#define ATMEL_HLCDC_LAYER_DSTKEY BIT(10 )
#define ATMEL_HLCDC_LAYER_DISCEN BIT(11 )
#define ATMEL_HLCDC_LAYER_GA_SHIFT 16
#define ATMEL_HLCDC_LAYER_GA_MASK \
GENMASK(23 , ATMEL_HLCDC_LAYER_GA_SHIFT)
#define ATMEL_HLCDC_LAYER_GA(x) \
((x) << ATMEL_HLCDC_LAYER_GA_SHIFT)
#define ATMEL_HLCDC_LAYER_DISC_POS(x, y) ((x) | ((y) << 16 ))
#define ATMEL_HLCDC_LAYER_DISC_SIZE(w, h) (((w) - 1 ) | (((h) - 1 ) << 16 ))
#define ATMEL_HLCDC_LAYER_SCALER_FACTORS(x, y) ((x) | ((y) << 16 ))
#define ATMEL_HLCDC_LAYER_SCALER_ENABLE BIT(31 )
#define ATMEL_HLCDC_LAYER_MAX_PLANES 3
#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_RESERVED BIT(0 )
#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED BIT(1 )
#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE BIT(2 )
#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN BIT(3 )
#define ATMEL_HLCDC_CLUT_SIZE 256
#define ATMEL_HLCDC_MAX_LAYERS 6
/* XLCDC controller specific registers */
#define ATMEL_XLCDC_LAYER_ENR 0 x10
#define ATMEL_XLCDC_LAYER_EN BIT(0 )
#define ATMEL_XLCDC_LAYER_IER 0 x0
#define ATMEL_XLCDC_LAYER_IDR 0 x4
#define ATMEL_XLCDC_LAYER_ISR 0 xc
#define ATMEL_XLCDC_LAYER_OVR_IRQ(p) BIT(2 + (8 * (p)))
#define ATMEL_XLCDC_LAYER_PLANE_ADDR(p) (((p) * 0 x4) + 0 x18)
#define ATMEL_XLCDC_LAYER_DMA_CFG 0
#define ATMEL_XLCDC_LAYER_DMA BIT(0 )
#define ATMEL_XLCDC_LAYER_REP BIT(1 )
#define ATMEL_XLCDC_LAYER_DISCEN BIT(4 )
#define ATMEL_XLCDC_LAYER_SFACTC_A0_MULT_AS (4 << 6 )
#define ATMEL_XLCDC_LAYER_SFACTA_ONE BIT(9 )
#define ATMEL_XLCDC_LAYER_DFACTC_M_A0_MULT_AS (6 << 11 )
#define ATMEL_XLCDC_LAYER_DFACTA_ONE BIT(14 )
#define ATMEL_XLCDC_LAYER_A0_SHIFT 16
#define ATMEL_XLCDC_LAYER_A0(x) \
((x) << ATMEL_XLCDC_LAYER_A0_SHIFT)
#define ATMEL_XLCDC_LAYER_VSCALER_LUMA_ENABLE BIT(0 )
#define ATMEL_XLCDC_LAYER_VSCALER_CHROMA_ENABLE BIT(1 )
#define ATMEL_XLCDC_LAYER_HSCALER_LUMA_ENABLE BIT(4 )
#define ATMEL_XLCDC_LAYER_HSCALER_CHROMA_ENABLE BIT(5 )
#define ATMEL_XLCDC_LAYER_VXSYCFG_ONE BIT(0 )
#define ATMEL_XLCDC_LAYER_VXSYTAP2_ENABLE BIT(4 )
#define ATMEL_XLCDC_LAYER_VXSCCFG_ONE BIT(16 )
#define ATMEL_XLCDC_LAYER_VXSCTAP2_ENABLE BIT(20 )
#define ATMEL_XLCDC_LAYER_HXSYCFG_ONE BIT(0 )
#define ATMEL_XLCDC_LAYER_HXSYTAP2_ENABLE BIT(4 )
#define ATMEL_XLCDC_LAYER_HXSCCFG_ONE BIT(16 )
#define ATMEL_XLCDC_LAYER_HXSCTAP2_ENABLE BIT(20 )
/**
* Atmel HLCDC Layer registers layout structure
*
* Each HLCDC layer has its own register organization and a given register
* can be placed differently on 2 different layers depending on its
* capabilities .
* This structure stores common registers layout for a given layer and is
* used by HLCDC layer code to choose the appropriate register to write to
* or to read from .
*
* For all fields , a value of zero means " unsupported " .
*
* See Atmel ' s datasheet for a detailled description of these registers .
*
* @ xstride : xstride registers
* @ pstride : pstride registers
* @ pos : position register
* @ size : displayed size register
* @ memsize : memory size register
* @ default_color : default color register
* @ chroma_key : chroma key register
* @ chroma_key_mask : chroma key mask register
* @ general_config : general layer config register
* @ sacler_config : scaler factors register
* @ phicoeffs : X / Y PHI coefficient registers
* @ disc_pos : discard area position register
* @ disc_size : discard area size register
* @ csc : color space conversion register
* @ vxs_config : vertical scalar filter taps control register
* @ hxs_config : horizontal scalar filter taps control register
*/
struct atmel_hlcdc_layer_cfg_layout {
int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
int pos;
int size;
int memsize;
int default_color;
int chroma_key;
int chroma_key_mask;
int general_config;
int scaler_config;
struct {
int x;
int y;
} phicoeffs;
int disc_pos;
int disc_size;
int csc;
int vxs_config;
int hxs_config;
};
/**
* Atmel HLCDC DMA descriptor structure
*
* This structure is used by the HLCDC DMA engine to schedule a DMA transfer .
*
* The structure fields must remain in this specific order , because they ' re
* used by the HLCDC DMA engine , which expect them in this order .
* HLCDC DMA descriptors must be aligned on 64 bits .
*
* @ addr : buffer DMA address
* @ ctrl : DMA transfer options
* @ next : next DMA descriptor to fetch
* @ self : descriptor DMA address
*/
struct atmel_hlcdc_dma_channel_dscr {
dma_addr_t addr;
u32 ctrl;
dma_addr_t next;
dma_addr_t self;
} __aligned(sizeof (u64));
/**
* Atmel HLCDC layer types
*/
enum atmel_hlcdc_layer_type {
ATMEL_HLCDC_NO_LAYER,
ATMEL_HLCDC_BASE_LAYER,
ATMEL_HLCDC_OVERLAY_LAYER,
ATMEL_HLCDC_CURSOR_LAYER,
ATMEL_HLCDC_PP_LAYER,
};
/**
* Atmel HLCDC Supported formats structure
*
* This structure list all the formats supported by a given layer .
*
* @ nformats : number of supported formats
* @ formats : supported formats
*/
struct atmel_hlcdc_formats {
int nformats;
u32 *formats;
};
/**
* Atmel HLCDC Layer description structure
*
* This structure describes the capabilities provided by a given layer .
*
* @ name : layer name
* @ type : layer type
* @ id : layer id
* @ regs_offset : offset of the layer registers from the HLCDC registers base
* @ cfgs_offset : CFGX registers offset from the layer registers base
* @ formats : supported formats
* @ layout : config registers layout
* @ max_width : maximum width supported by this layer ( 0 means unlimited )
* @ max_height : maximum height supported by this layer ( 0 means unlimited )
*/
struct atmel_hlcdc_layer_desc {
const char *name;
enum atmel_hlcdc_layer_type type;
int id;
int regs_offset;
int cfgs_offset;
int clut_offset;
struct atmel_hlcdc_formats *formats;
struct atmel_hlcdc_layer_cfg_layout layout;
int max_width;
int max_height;
};
/**
* Atmel HLCDC Layer .
*
* A layer can be a DRM plane of a post processing layer used to render
* HLCDC composition into memory .
*
* @ desc : layer description
* @ regmap : pointer to the HLCDC regmap
*/
struct atmel_hlcdc_layer {
const struct atmel_hlcdc_layer_desc *desc;
struct regmap *regmap;
};
/**
* Atmel HLCDC Plane .
*
* @ base : base DRM plane structure
* @ layer : HLCDC layer structure
* @ properties : pointer to the property definitions structure
*/
struct atmel_hlcdc_plane {
struct drm_plane base;
struct atmel_hlcdc_layer layer;
};
static inline struct atmel_hlcdc_plane *
drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p)
{
return container_of(p, struct atmel_hlcdc_plane, base);
}
static inline struct atmel_hlcdc_plane *
atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *layer)
{
return container_of(layer, struct atmel_hlcdc_plane, layer);
}
/**
* struct atmel_hlcdc_dc - Atmel HLCDC Display Controller .
* @ desc : HLCDC Display Controller description
* @ dscrpool : DMA coherent pool used to allocate DMA descriptors
* @ hlcdc : pointer to the atmel_hlcdc structure provided by the MFD device
* @ crtc : CRTC provided by the display controller
* @ layers : active HLCDC layers
* @ suspend : used to store the HLCDC state when entering suspend
* @ suspend . imr : used to read / write LCDC Interrupt Mask Register
* @ suspend . state : Atomic commit structure
*/
struct atmel_hlcdc_dc {
const struct atmel_hlcdc_dc_desc *desc;
struct dma_pool *dscrpool;
struct atmel_hlcdc *hlcdc;
struct drm_crtc *crtc;
struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
struct {
u32 imr;
struct drm_atomic_state *state;
} suspend;
};
struct atmel_hlcdc_plane_state;
/**
* struct atmel_lcdc_dc_ops - describes atmel_lcdc ops group
* to differentiate HLCDC and XLCDC IP code support
* @ plane_setup_scaler : update the vertical and horizontal scaling factors
* @ update_lcdc_buffers : update the each LCDC layers DMA registers
* @ lcdc_atomic_disable : disable LCDC interrupts and layers
* @ lcdc_update_general_settings : update each LCDC layers general
* configuration register
* @ lcdc_atomic_update : enable the LCDC layers and interrupts
* @ lcdc_csc_init : update the color space conversion co - efficient of
* High - end overlay register
* @ lcdc_irq_dbg : to raise alert incase of interrupt overrun in any LCDC layer
*/
struct atmel_lcdc_dc_ops {
void (*plane_setup_scaler)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state);
void (*lcdc_update_buffers)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state,
u32 sr, int i);
void (*lcdc_atomic_disable)(struct atmel_hlcdc_plane *plane);
void (*lcdc_update_general_settings)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_plane_state *state);
void (*lcdc_atomic_update)(struct atmel_hlcdc_plane *plane,
struct atmel_hlcdc_dc *dc);
void (*lcdc_csc_init)(struct atmel_hlcdc_plane *plane,
const struct atmel_hlcdc_layer_desc *desc);
void (*lcdc_irq_dbg)(struct atmel_hlcdc_plane *plane,
const struct atmel_hlcdc_layer_desc *desc);
};
extern const struct atmel_lcdc_dc_ops atmel_hlcdc_ops;
extern const struct atmel_lcdc_dc_ops atmel_xlcdc_ops;
/**
* Atmel HLCDC Display Controller description structure .
*
* This structure describes the HLCDC IP capabilities and depends on the
* HLCDC IP version ( or Atmel SoC family ) .
*
* @ min_width : minimum width supported by the Display Controller
* @ min_height : minimum height supported by the Display Controller
* @ max_width : maximum width supported by the Display Controller
* @ max_height : maximum height supported by the Display Controller
* @ max_spw : maximum vertical / horizontal pulse width
* @ max_vpw : maximum vertical back / front porch width
* @ max_hpw : maximum horizontal back / front porch width
* @ conflicting_output_formats : true if RGBXXX output formats conflict with
* each other .
* @ fixed_clksrc : true if clock source is fixed
* @ is_xlcdc : true if XLCDC IP is supported
* @ layers : a layer description table describing available layers
* @ nlayers : layer description table size
* @ ops : atmel lcdc dc ops
*/
struct atmel_hlcdc_dc_desc {
int min_width;
int min_height;
int max_width;
int max_height;
int max_spw;
int max_vpw;
int max_hpw;
bool conflicting_output_formats;
bool fixed_clksrc;
bool is_xlcdc;
const struct atmel_hlcdc_layer_desc *layers;
int nlayers;
const struct atmel_lcdc_dc_ops *ops;
};
extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
static inline void atmel_hlcdc_layer_write_reg(struct atmel_hlcdc_layer *layer,
unsigned int reg, u32 val)
{
regmap_write(layer->regmap, layer->desc->regs_offset + reg, val);
}
static inline u32 atmel_hlcdc_layer_read_reg(struct atmel_hlcdc_layer *layer,
unsigned int reg)
{
u32 val;
regmap_read(layer->regmap, layer->desc->regs_offset + reg, &val);
return val;
}
static inline void atmel_hlcdc_layer_write_cfg(struct atmel_hlcdc_layer *layer,
unsigned int cfgid, u32 val)
{
atmel_hlcdc_layer_write_reg(layer,
layer->desc->cfgs_offset +
(cfgid * sizeof (u32)), val);
}
static inline u32 atmel_hlcdc_layer_read_cfg(struct atmel_hlcdc_layer *layer,
unsigned int cfgid)
{
return atmel_hlcdc_layer_read_reg(layer,
layer->desc->cfgs_offset +
(cfgid * sizeof (u32)));
}
static inline void atmel_hlcdc_layer_write_clut(struct atmel_hlcdc_layer *layer,
unsigned int c, u32 val)
{
regmap_write(layer->regmap,
layer->desc->clut_offset + c * sizeof (u32),
val);
}
static inline void atmel_hlcdc_layer_init(struct atmel_hlcdc_layer *layer,
const struct atmel_hlcdc_layer_desc *desc,
struct regmap *regmap)
{
layer->desc = desc;
layer->regmap = regmap;
}
enum drm_mode_status
atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
const struct drm_display_mode *mode);
int atmel_hlcdc_create_planes(struct drm_device *dev);
void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane);
int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state);
void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
int atmel_hlcdc_crtc_create(struct drm_device *dev);
int atmel_hlcdc_create_outputs(struct drm_device *dev);
int atmel_hlcdc_encoder_get_bus_fmt(struct drm_encoder *encoder);
#endif /* DRM_ATMEL_HLCDC_H */
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