/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( c ) 2011 - 2012 Samsung Electronics Co . , Ltd .
* http : //www.samsung.com
*
* header file for Samsung EXYNOS5 SoC series G - Scaler driver
*/
#ifndef GSC_CORE_H_
#define GSC_CORE_H_
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <media/videobuf2-v4l2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-mediabus.h>
#include <media/videobuf2-dma-contig.h>
#include "gsc-regs.h"
#define GSC_MODULE_NAME "exynos-gsc"
#define GSC_SHUTDOWN_TIMEOUT ((100 *HZ)/1000 )
#define GSC_MAX_DEVS 4
#define GSC_MAX_CLOCKS 4
#define GSC_M2M_BUF_NUM 0
#define GSC_MAX_CTRL_NUM 10
#define GSC_SC_ALIGN_4 4
#define GSC_SC_ALIGN_2 2
#define DEFAULT_CSC_EQ 1
#define DEFAULT_CSC_RANGE 1
#define GSC_PARAMS (1 << 0 )
#define GSC_SRC_FMT (1 << 1 )
#define GSC_DST_FMT (1 << 2 )
#define GSC_CTX_M2M (1 << 3 )
#define GSC_CTX_STOP_REQ (1 << 6 )
#define GSC_CTX_ABORT (1 << 7 )
enum gsc_dev_flags {
/* for m2m node */
ST_M2M_OPEN,
ST_M2M_RUN,
ST_M2M_PEND,
ST_M2M_SUSPENDED,
ST_M2M_SUSPENDING,
};
enum gsc_irq {
GSC_IRQ_DONE,
GSC_IRQ_OVERRUN
};
/**
* enum gsc_datapath - the path of data used for G - Scaler
* @ GSC_CAMERA : from camera
* @ GSC_DMA : from / to DMA
* @ GSC_WRITEBACK : from FIMD
*/
enum gsc_datapath {
GSC_CAMERA = 0 x1,
GSC_DMA,
GSC_WRITEBACK,
};
enum gsc_color_fmt {
GSC_RGB = 0 x1,
GSC_YUV420 = 0 x2,
GSC_YUV422 = 0 x4,
GSC_YUV444 = 0 x8,
};
enum gsc_yuv_fmt {
GSC_LSB_Y = 0 x10,
GSC_LSB_C,
GSC_CBCR = 0 x20,
GSC_CRCB,
};
#define fh_to_ctx(__fh) container_of(__fh, struct gsc_ctx, fh)
#define is_rgb(x) (!!((x) & 0 x1))
#define is_yuv420(x) (!!((x) & 0 x2))
#define is_yuv422(x) (!!((x) & 0 x4))
#define gsc_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state)
#define gsc_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state)
#define gsc_m2m_opened(dev) test_bit(ST_M2M_OPEN, &(dev)->state)
#define ctrl_to_ctx(__ctrl) \
container_of((__ctrl)->handler, struct gsc_ctx, ctrl_handler)
/**
* struct gsc_fmt - the driver ' s internal color format data
* @ mbus_code : Media Bus pixel code , - 1 if not applicable
* @ pixelformat : the fourcc code for this format , 0 if not applicable
* @ color : color encoding
* @ yorder : Y / C order
* @ corder : Chrominance order control
* @ num_planes : number of physically non - contiguous data planes
* @ num_comp : number of physically contiguous data planes
* @ depth : per plane driver ' s private ' number of bits per pixel '
* @ flags : flags indicating which operation mode format applies to
*/
struct gsc_fmt {
u32 mbus_code;
u32 pixelformat;
u32 color;
u32 yorder;
u32 corder;
u16 num_planes;
u16 num_comp;
u8 depth[VIDEO_MAX_PLANES];
u32 flags;
};
/**
* struct gsc_input_buf - the driver ' s video buffer
* @ vb : videobuf2 buffer
* @ list : linked list structure for buffer queue
* @ idx : index of G - Scaler input buffer
*/
struct gsc_input_buf {
struct vb2_v4l2_buffer vb;
struct list_head list;
int idx;
};
/**
* struct gsc_addr - the G - Scaler physical address set
* @ y : luminance plane address
* @ cb : Cb plane address
* @ cr : Cr plane address
*/
struct gsc_addr {
dma_addr_t y;
dma_addr_t cb;
dma_addr_t cr;
};
/* struct gsc_ctrls - the G-Scaler control set
* @ rotate : rotation degree
* @ hflip : horizontal flip
* @ vflip : vertical flip
* @ global_alpha : the alpha value of current frame
*/
struct gsc_ctrls {
struct v4l2_ctrl *rotate;
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
struct v4l2_ctrl *global_alpha;
};
/**
* struct gsc_scaler - the configuration data for G - Scaler inetrnal scaler
* @ pre_shfactor : pre sclaer shift factor
* @ pre_hratio : horizontal ratio of the prescaler
* @ pre_vratio : vertical ratio of the prescaler
* @ main_hratio : the main scaler ' s horizontal ratio
* @ main_vratio : the main scaler ' s vertical ratio
*/
struct gsc_scaler {
u32 pre_shfactor;
u32 pre_hratio;
u32 pre_vratio;
u32 main_hratio;
u32 main_vratio;
};
struct gsc_dev;
struct gsc_ctx;
/**
* struct gsc_frame - source / target frame properties
* @ f_width : SRC : SRCIMG_WIDTH , DST : OUTPUTDMA_WHOLE_IMG_WIDTH
* @ f_height : SRC : SRCIMG_HEIGHT , DST : OUTPUTDMA_WHOLE_IMG_HEIGHT
* @ crop : cropped ( source ) / scaled ( destination ) size
* @ payload : image size in bytes ( w x h x bpp )
* @ addr : image frame buffer physical addresses
* @ fmt : G - Scaler color format pointer
* @ colorspace : value indicating v4l2_colorspace
* @ alpha : frame ' s alpha value
*/
struct gsc_frame {
u32 f_width;
u32 f_height;
struct v4l2_rect crop;
unsigned long payload[VIDEO_MAX_PLANES];
struct gsc_addr addr;
const struct gsc_fmt *fmt;
u32 colorspace;
u8 alpha;
};
/**
* struct gsc_m2m_device - v4l2 memory - to - memory device data
* @ vfd : the video device node for v4l2 m2m mode
* @ m2m_dev : v4l2 memory - to - memory device data
* @ ctx : hardware context data
* @ refcnt : the reference counter
*/
struct gsc_m2m_device {
struct video_device *vfd;
struct v4l2_m2m_dev *m2m_dev;
struct gsc_ctx *ctx;
int refcnt;
};
/**
* struct gsc_pix_max - image pixel size limits in various IP configurations
*
* @ org_scaler_bypass_w : max pixel width when the scaler is disabled
* @ org_scaler_bypass_h : max pixel height when the scaler is disabled
* @ org_scaler_input_w : max pixel width when the scaler is enabled
* @ org_scaler_input_h : max pixel height when the scaler is enabled
* @ real_rot_dis_w : max pixel src cropped height with the rotator is off
* @ real_rot_dis_h : max pixel src cropped width with the rotator is off
* @ real_rot_en_w : max pixel src cropped width with the rotator is on
* @ real_rot_en_h : max pixel src cropped height with the rotator is on
* @ target_rot_dis_w : max pixel dst scaled width with the rotator is off
* @ target_rot_dis_h : max pixel dst scaled height with the rotator is off
* @ target_rot_en_w : max pixel dst scaled width with the rotator is on
* @ target_rot_en_h : max pixel dst scaled height with the rotator is on
*/
struct gsc_pix_max {
u16 org_scaler_bypass_w;
u16 org_scaler_bypass_h;
u16 org_scaler_input_w;
u16 org_scaler_input_h;
u16 real_rot_dis_w;
u16 real_rot_dis_h;
u16 real_rot_en_w;
u16 real_rot_en_h;
u16 target_rot_dis_w;
u16 target_rot_dis_h;
u16 target_rot_en_w;
u16 target_rot_en_h;
};
/**
* struct gsc_pix_min - image pixel size limits in various IP configurations
*
* @ org_w : minimum source pixel width
* @ org_h : minimum source pixel height
* @ real_w : minimum input crop pixel width
* @ real_h : minimum input crop pixel height
* @ target_rot_dis_w : minimum output scaled pixel height when rotator is off
* @ target_rot_dis_h : minimum output scaled pixel height when rotator is off
* @ target_rot_en_w : minimum output scaled pixel height when rotator is on
* @ target_rot_en_h : minimum output scaled pixel height when rotator is on
*/
struct gsc_pix_min {
u16 org_w;
u16 org_h;
u16 real_w;
u16 real_h;
u16 target_rot_dis_w;
u16 target_rot_dis_h;
u16 target_rot_en_w;
u16 target_rot_en_h;
};
struct gsc_pix_align {
u16 org_h;
u16 org_w;
u16 offset_h;
u16 real_w;
u16 real_h;
u16 target_w;
u16 target_h;
};
/*
* struct gsc_variant - G - Scaler variant information
*/
struct gsc_variant {
struct gsc_pix_max *pix_max;
struct gsc_pix_min *pix_min;
struct gsc_pix_align *pix_align;
u16 in_buf_cnt;
u16 out_buf_cnt;
u16 sc_up_max;
u16 sc_down_max;
u16 poly_sc_down_max;
u16 pre_sc_down_max;
u16 local_sc_down;
};
/**
* struct gsc_driverdata - per device type driver data for init time .
*
* @ variant : the variant information for this driver .
* @ num_entities : the number of g - scalers
* @ clk_names : clock names
* @ num_clocks : the number of clocks in @ clk_names
* @ num_entities : the number of g - scalers
*/
struct gsc_driverdata {
struct gsc_variant *variant[GSC_MAX_DEVS];
const char *clk_names[GSC_MAX_CLOCKS];
int num_clocks;
int num_entities;
};
/**
* struct gsc_dev - abstraction for G - Scaler entity
* @ slock : the spinlock protecting this data structure
* @ lock : the mutex protecting this data structure
* @ pdev : pointer to the G - Scaler platform device
* @ variant : the IP variant information
* @ id : G - Scaler device index ( 0 . . GSC_MAX_DEVS )
* @ num_clocks : number of clocks required for G - Scaler operation
* @ clock : clocks required for G - Scaler operation
* @ regs : the mapped hardware registers
* @ irq_queue : interrupt handler waitqueue
* @ m2m : memory - to - memory V4L2 device information
* @ state : flags used to synchronize m2m and capture mode operation
* @ vdev : video device for G - Scaler instance
* @ v4l2_dev : v4l2_device for G - Scaler instance
*/
struct gsc_dev {
spinlock_t slock;
struct mutex lock;
struct platform_device *pdev;
struct gsc_variant *variant;
u16 id;
int num_clocks;
struct clk *clock[GSC_MAX_CLOCKS];
void __iomem *regs;
wait_queue_head_t irq_queue;
struct gsc_m2m_device m2m;
unsigned long state;
struct video_device vdev;
struct v4l2_device v4l2_dev;
};
/**
* struct gsc_ctx - the device context data
* @ s_frame : source frame properties
* @ d_frame : destination frame properties
* @ in_path : input mode ( DMA or camera )
* @ out_path : output mode ( DMA or FIFO )
* @ scaler : image scaler properties
* @ flags : additional flags for image conversion
* @ state : flags to keep track of user configuration
* @ rotation : rotation
* @ hflip : horizontal flip
* @ vflip : vertical flip
* @ gsc_dev : the G - Scaler device this context applies to
* @ m2m_ctx : memory - to - memory device context
* @ fh : v4l2 file handle
* @ ctrl_handler : v4l2 controls handler
* @ gsc_ctrls : G - Scaler control set
* @ ctrls_rdy : true if the control handler is initialized
* @ out_colorspace : the colorspace of the OUTPUT queue
*/
struct gsc_ctx {
struct gsc_frame s_frame;
struct gsc_frame d_frame;
enum gsc_datapath in_path;
enum gsc_datapath out_path;
struct gsc_scaler scaler;
u32 flags;
u32 state;
int rotation;
unsigned int hflip:1 ;
unsigned int vflip:1 ;
struct gsc_dev *gsc_dev;
struct v4l2_m2m_ctx *m2m_ctx;
struct v4l2_fh fh;
struct v4l2_ctrl_handler ctrl_handler;
struct gsc_ctrls gsc_ctrls;
bool ctrls_rdy;
enum v4l2_colorspace out_colorspace;
};
void gsc_set_prefbuf(struct gsc_dev *gsc, struct gsc_frame *frm);
int gsc_register_m2m_device(struct gsc_dev *gsc);
void gsc_unregister_m2m_device(struct gsc_dev *gsc);
void gsc_m2m_job_finish(struct gsc_ctx *ctx, int vb_state);
u32 get_plane_size(struct gsc_frame *fr, unsigned int plane);
const struct gsc_fmt *get_format(int index);
const struct gsc_fmt *find_fmt(u32 *pixelformat, u32 *mbus_code, u32 index);
int gsc_enum_fmt(struct v4l2_fmtdesc *f);
int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f);
void gsc_set_frame_size(struct gsc_frame *frame, int width, int height);
int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f);
void gsc_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h);
int gsc_try_selection(struct gsc_ctx *ctx, struct v4l2_selection *s);
int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst,
u32 *ratio);
void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh);
void gsc_check_src_scale_info(struct gsc_variant *var,
struct gsc_frame *s_frame,
u32 *wratio, u32 tx, u32 ty, u32 *hratio);
int gsc_check_scaler_ratio(struct gsc_variant *var, int sw, int sh, int dw,
int dh, int rot, int out_path);
int gsc_set_scaler_info(struct gsc_ctx *ctx);
int gsc_ctrls_create(struct gsc_ctx *ctx);
void gsc_ctrls_delete(struct gsc_ctx *ctx);
int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
struct gsc_frame *frame, struct gsc_addr *addr);
static inline void gsc_ctx_state_lock_set(u32 state, struct gsc_ctx *ctx)
{
unsigned long flags;
spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
ctx->state |= state;
spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
}
static inline void gsc_ctx_state_lock_clear(u32 state, struct gsc_ctx *ctx)
{
unsigned long flags;
spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
ctx->state &= ~state;
spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
}
static inline int is_tiled(const struct gsc_fmt *fmt)
{
return fmt->pixelformat == V4L2_PIX_FMT_NV12MT_16X16;
}
static inline void gsc_hw_enable_control(struct gsc_dev *dev, bool on)
{
u32 cfg = readl(dev->regs + GSC_ENABLE);
if (on)
cfg |= GSC_ENABLE_ON;
else
cfg &= ~GSC_ENABLE_ON;
writel(cfg, dev->regs + GSC_ENABLE);
}
static inline int gsc_hw_get_irq_status(struct gsc_dev *dev)
{
u32 cfg = readl(dev->regs + GSC_IRQ);
if (cfg & GSC_IRQ_STATUS_OR_IRQ)
return GSC_IRQ_OVERRUN;
else
return GSC_IRQ_DONE;
}
static inline void gsc_hw_clear_irq(struct gsc_dev *dev, int irq)
{
u32 cfg = readl(dev->regs + GSC_IRQ);
if (irq == GSC_IRQ_OVERRUN)
cfg |= GSC_IRQ_STATUS_OR_IRQ;
else if (irq == GSC_IRQ_DONE)
cfg |= GSC_IRQ_STATUS_FRM_DONE_IRQ;
writel(cfg, dev->regs + GSC_IRQ);
}
static inline bool gsc_ctx_state_is_set(u32 mask, struct gsc_ctx *ctx)
{
unsigned long flags;
bool ret;
spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
ret = (ctx->state & mask) == mask;
spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
return ret;
}
static inline struct gsc_frame *ctx_get_frame(struct gsc_ctx *ctx,
enum v4l2_buf_type type)
{
struct gsc_frame *frame;
if (V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE == type) {
frame = &ctx->s_frame;
} else if (V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE == type) {
frame = &ctx->d_frame;
} else {
pr_err("Wrong buffer/video queue type (%d)" , type);
return ERR_PTR(-EINVAL);
}
return frame;
}
void gsc_hw_set_sw_reset(struct gsc_dev *dev);
int gsc_wait_reset(struct gsc_dev *dev);
void gsc_hw_set_frm_done_irq_mask(struct gsc_dev *dev, bool mask);
void gsc_hw_set_gsc_irq_enable(struct gsc_dev *dev, bool mask);
void gsc_hw_set_input_buf_masking(struct gsc_dev *dev, u32 shift, bool enable);
void gsc_hw_set_output_buf_masking(struct gsc_dev *dev, u32 shift, bool enable);
void gsc_hw_set_input_addr(struct gsc_dev *dev, struct gsc_addr *addr,
int index);
void gsc_hw_set_output_addr(struct gsc_dev *dev, struct gsc_addr *addr,
int index);
void gsc_hw_set_input_path(struct gsc_ctx *ctx);
void gsc_hw_set_in_size(struct gsc_ctx *ctx);
void gsc_hw_set_in_image_rgb(struct gsc_ctx *ctx);
void gsc_hw_set_in_image_format(struct gsc_ctx *ctx);
void gsc_hw_set_output_path(struct gsc_ctx *ctx);
void gsc_hw_set_out_size(struct gsc_ctx *ctx);
void gsc_hw_set_out_image_rgb(struct gsc_ctx *ctx);
void gsc_hw_set_out_image_format(struct gsc_ctx *ctx);
void gsc_hw_set_prescaler(struct gsc_ctx *ctx);
void gsc_hw_set_mainscaler(struct gsc_ctx *ctx);
void gsc_hw_set_rotation(struct gsc_ctx *ctx);
void gsc_hw_set_global_alpha(struct gsc_ctx *ctx);
void gsc_hw_set_sfr_update(struct gsc_ctx *ctx);
#endif /* GSC_CORE_H_ */
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