/*
* Copyright © 2006 Keith Packard
* Copyright © 2007 - 2008 Dave Airlie
* Copyright © 2007 - 2008 Intel Corporation
* Jesse Barnes < jesse . barnes @ intel . com >
* Copyright © 2014 Intel Corporation
* Daniel Vetter < daniel . vetter @ ffwll . ch >
*
* 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 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 HOLDER ( S ) OR AUTHOR ( S ) 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_MODES_H__
#define __DRM_MODES_H__
#include <linux/hdmi.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_connector.h>
struct videomode;
/*
* Note on terminology : here , for brevity and convenience , we refer to connector
* control chips as ' CRTCs ' . They can control any type of connector , VGA , LVDS ,
* DVI , etc . And ' screen ' refers to the whole of the visible display , which
* may span multiple monitors ( and therefore multiple CRTC and connector
* structures ) .
*/
/**
* enum drm_mode_status - hardware support status of a mode
* @ MODE_OK : Mode OK
* @ MODE_HSYNC : hsync out of range
* @ MODE_VSYNC : vsync out of range
* @ MODE_H_ILLEGAL : mode has illegal horizontal timings
* @ MODE_V_ILLEGAL : mode has illegal vertical timings
* @ MODE_BAD_WIDTH : requires an unsupported linepitch
* @ MODE_NOMODE : no mode with a matching name
* @ MODE_NO_INTERLACE : interlaced mode not supported
* @ MODE_NO_DBLESCAN : doublescan mode not supported
* @ MODE_NO_VSCAN : multiscan mode not supported
* @ MODE_MEM : insufficient video memory
* @ MODE_VIRTUAL_X : mode width too large for specified virtual size
* @ MODE_VIRTUAL_Y : mode height too large for specified virtual size
* @ MODE_MEM_VIRT : insufficient video memory given virtual size
* @ MODE_NOCLOCK : no fixed clock available
* @ MODE_CLOCK_HIGH : clock required is too high
* @ MODE_CLOCK_LOW : clock required is too low
* @ MODE_CLOCK_RANGE : clock / mode isn ' t in a ClockRange
* @ MODE_BAD_HVALUE : horizontal timing was out of range
* @ MODE_BAD_VVALUE : vertical timing was out of range
* @ MODE_BAD_VSCAN : VScan value out of range
* @ MODE_HSYNC_NARROW : horizontal sync too narrow
* @ MODE_HSYNC_WIDE : horizontal sync too wide
* @ MODE_HBLANK_NARROW : horizontal blanking too narrow
* @ MODE_HBLANK_WIDE : horizontal blanking too wide
* @ MODE_VSYNC_NARROW : vertical sync too narrow
* @ MODE_VSYNC_WIDE : vertical sync too wide
* @ MODE_VBLANK_NARROW : vertical blanking too narrow
* @ MODE_VBLANK_WIDE : vertical blanking too wide
* @ MODE_PANEL : exceeds panel dimensions
* @ MODE_INTERLACE_WIDTH : width too large for interlaced mode
* @ MODE_ONE_WIDTH : only one width is supported
* @ MODE_ONE_HEIGHT : only one height is supported
* @ MODE_ONE_SIZE : only one resolution is supported
* @ MODE_NO_REDUCED : monitor doesn ' t accept reduced blanking
* @ MODE_NO_STEREO : stereo modes not supported
* @ MODE_NO_420 : ycbcr 420 modes not supported
* @ MODE_STALE : mode has become stale
* @ MODE_BAD : unspecified reason
* @ MODE_ERROR : error condition
*
* This enum is used to filter out modes not supported by the driver / hardware
* combination .
*/
enum drm_mode_status {
MODE_OK = 0 ,
MODE_HSYNC,
MODE_VSYNC,
MODE_H_ILLEGAL,
MODE_V_ILLEGAL,
MODE_BAD_WIDTH,
MODE_NOMODE,
MODE_NO_INTERLACE,
MODE_NO_DBLESCAN,
MODE_NO_VSCAN,
MODE_MEM,
MODE_VIRTUAL_X,
MODE_VIRTUAL_Y,
MODE_MEM_VIRT,
MODE_NOCLOCK,
MODE_CLOCK_HIGH,
MODE_CLOCK_LOW,
MODE_CLOCK_RANGE,
MODE_BAD_HVALUE,
MODE_BAD_VVALUE,
MODE_BAD_VSCAN,
MODE_HSYNC_NARROW,
MODE_HSYNC_WIDE,
MODE_HBLANK_NARROW,
MODE_HBLANK_WIDE,
MODE_VSYNC_NARROW,
MODE_VSYNC_WIDE,
MODE_VBLANK_NARROW,
MODE_VBLANK_WIDE,
MODE_PANEL,
MODE_INTERLACE_WIDTH,
MODE_ONE_WIDTH,
MODE_ONE_HEIGHT,
MODE_ONE_SIZE,
MODE_NO_REDUCED,
MODE_NO_STEREO,
MODE_NO_420,
MODE_STALE = -3 ,
MODE_BAD = -2 ,
MODE_ERROR = -1
};
#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
.name = nm, .status = 0 , .type = (t), .clock = (c), \
.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
.vscan = (vs), .flags = (f)
/**
* DRM_MODE_RES_MM - Calculates the display size from resolution and DPI
* @ res : The resolution in pixel
* @ dpi : The number of dots per inch
*/
#define DRM_MODE_RES_MM(res, dpi) \
(((res) * 254 ul) / ((dpi) * 10 ul))
#define __DRM_MODE_INIT(pix, hd, vd, hd_mm, vd_mm) \
.type = DRM_MODE_TYPE_DRIVER, .clock = (pix), \
.hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \
.htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \
.vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \
.height_mm = (vd_mm)
/**
* DRM_MODE_INIT - Initialize display mode
* @ hz : Vertical refresh rate in Hertz
* @ hd : Horizontal resolution , width
* @ vd : Vertical resolution , height
* @ hd_mm : Display width in millimeters
* @ vd_mm : Display height in millimeters
*
* This macro initializes a & drm_display_mode that contains information about
* refresh rate , resolution and physical size .
*/
#define DRM_MODE_INIT(hz, hd, vd, hd_mm, vd_mm) \
__DRM_MODE_INIT((hd) * (vd) * (hz) / 1000 /* kHz */, hd, vd, hd_mm, vd_mm)
/**
* DRM_SIMPLE_MODE - Simple display mode
* @ hd : Horizontal resolution , width
* @ vd : Vertical resolution , height
* @ hd_mm : Display width in millimeters
* @ vd_mm : Display height in millimeters
*
* This macro initializes a & drm_display_mode that only contains info about
* resolution and physical size .
*/
#define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \
__DRM_MODE_INIT(1 /* pass validation */, hd, vd, hd_mm, vd_mm)
#define CRTC_INTERLACE_HALVE_V (1 << 0 ) /* halve V values for interlacing */
#define CRTC_STEREO_DOUBLE (1 << 1 ) /* adjust timings for stereo modes */
#define CRTC_NO_DBLSCAN (1 << 2 ) /* don't adjust doublescan */
#define CRTC_NO_VSCAN (1 << 3 ) /* don't adjust doublescan */
#define CRTC_STEREO_DOUBLE_ONLY (CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)
#define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF
#define DRM_MODE_MATCH_TIMINGS (1 << 0 )
#define DRM_MODE_MATCH_CLOCK (1 << 1 )
#define DRM_MODE_MATCH_FLAGS (1 << 2 )
#define DRM_MODE_MATCH_3D_FLAGS (1 << 3 )
#define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4 )
/**
* struct drm_display_mode - DRM kernel - internal display mode structure
* @ hdisplay : horizontal display size
* @ hsync_start : horizontal sync start
* @ hsync_end : horizontal sync end
* @ htotal : horizontal total size
* @ hskew : horizontal skew ? !
* @ vdisplay : vertical display size
* @ vsync_start : vertical sync start
* @ vsync_end : vertical sync end
* @ vtotal : vertical total size
* @ vscan : vertical scan ? !
* @ crtc_hdisplay : hardware mode horizontal display size
* @ crtc_hblank_start : hardware mode horizontal blank start
* @ crtc_hblank_end : hardware mode horizontal blank end
* @ crtc_hsync_start : hardware mode horizontal sync start
* @ crtc_hsync_end : hardware mode horizontal sync end
* @ crtc_htotal : hardware mode horizontal total size
* @ crtc_hskew : hardware mode horizontal skew ? !
* @ crtc_vdisplay : hardware mode vertical display size
* @ crtc_vblank_start : hardware mode vertical blank start
* @ crtc_vblank_end : hardware mode vertical blank end
* @ crtc_vsync_start : hardware mode vertical sync start
* @ crtc_vsync_end : hardware mode vertical sync end
* @ crtc_vtotal : hardware mode vertical total size
*
* This is the kernel API display mode information structure . For the
* user - space version see struct drm_mode_modeinfo .
*
* The horizontal and vertical timings are defined per the following diagram .
*
* : :
*
*
* Active Front Sync Back
* Region Porch Porch
* < - - - - - - - - - - - - - - - - - - - - - - - > < - - - - - - - - - - - - - - - - > < - - - - - - - - - - - - - > < - - - - - - - - - - - - - - >
* //////////////////////|
* ////////////////////// |
* ////////////////////// |.................. ................
* _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
* < - - - - - [ hv ] display - - - - - >
* < - - - - - - - - - - - - - [ hv ] sync_start - - - - - - - - - - - - >
* < - - - - - - - - - - - - - - - - - - - - - [ hv ] sync_end - - - - - - - - - - - - - - - - - - - - - >
* < - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - [ hv ] total - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > *
*
* This structure contains two copies of timings . First are the plain timings ,
* which specify the logical mode , as it would be for a progressive 1 : 1 scanout
* at the refresh rate userspace can observe through vblank timestamps . Then
* there ' s the hardware timings , which are corrected for interlacing ,
* double - clocking and similar things . They are provided as a convenience , and
* can be appropriately computed using drm_mode_set_crtcinfo ( ) .
*
* For printing you can use % DRM_MODE_FMT and DRM_MODE_ARG ( ) .
*/
struct drm_display_mode {
/**
* @ clock :
*
* Pixel clock in kHz .
*/
int clock; /* in kHz */
u16 hdisplay;
u16 hsync_start;
u16 hsync_end;
u16 htotal;
u16 hskew;
u16 vdisplay;
u16 vsync_start;
u16 vsync_end;
u16 vtotal;
u16 vscan;
/**
* @ flags :
*
* Sync and timing flags :
*
* - DRM_MODE_FLAG_PHSYNC : horizontal sync is active high .
* - DRM_MODE_FLAG_NHSYNC : horizontal sync is active low .
* - DRM_MODE_FLAG_PVSYNC : vertical sync is active high .
* - DRM_MODE_FLAG_NVSYNC : vertical sync is active low .
* - DRM_MODE_FLAG_INTERLACE : mode is interlaced .
* - DRM_MODE_FLAG_DBLSCAN : mode uses doublescan .
* - DRM_MODE_FLAG_CSYNC : mode uses composite sync .
* - DRM_MODE_FLAG_PCSYNC : composite sync is active high .
* - DRM_MODE_FLAG_NCSYNC : composite sync is active low .
* - DRM_MODE_FLAG_HSKEW : hskew provided ( not used ? ) .
* - DRM_MODE_FLAG_BCAST : < deprecated >
* - DRM_MODE_FLAG_PIXMUX : < deprecated >
* - DRM_MODE_FLAG_DBLCLK : double - clocked mode .
* - DRM_MODE_FLAG_CLKDIV2 : half - clocked mode .
*
* Additionally there ' s flags to specify how 3 D modes are packed :
*
* - DRM_MODE_FLAG_3D_NONE : normal , non - 3 D mode .
* - DRM_MODE_FLAG_3D_FRAME_PACKING : 2 full frames for left and right .
* - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE : interleaved like fields .
* - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE : interleaved lines .
* - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL : side - by - side full frames .
* - DRM_MODE_FLAG_3D_L_DEPTH : ?
* - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH : ?
* - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM : frame split into top and bottom
* parts .
* - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF : frame split into left and
* right parts .
*/
u32 flags;
/**
* @ crtc_clock :
*
* Actual pixel or dot clock in the hardware . This differs from the
* logical @ clock when e . g . using interlacing , double - clocking , stereo
* modes or other fancy stuff that changes the timings and signals
* actually sent over the wire .
*
* This is again in kHz .
*
* Note that with digital outputs like HDMI or DP there ' s usually a
* massive confusion between the dot clock and the signal clock at the
* bit encoding level . Especially when a 8 b / 10 b encoding is used and the
* difference is exactly a factor of 10 .
*/
int crtc_clock;
u16 crtc_hdisplay;
u16 crtc_hblank_start;
u16 crtc_hblank_end;
u16 crtc_hsync_start;
u16 crtc_hsync_end;
u16 crtc_htotal;
u16 crtc_hskew;
u16 crtc_vdisplay;
u16 crtc_vblank_start;
u16 crtc_vblank_end;
u16 crtc_vsync_start;
u16 crtc_vsync_end;
u16 crtc_vtotal;
/**
* @ width_mm :
*
* Addressable size of the output in mm , projectors should set this to
* 0 .
*/
u16 width_mm;
/**
* @ height_mm :
*
* Addressable size of the output in mm , projectors should set this to
* 0 .
*/
u16 height_mm;
/**
* @ type :
*
* A bitmask of flags , mostly about the source of a mode . Possible flags
* are :
*
* - DRM_MODE_TYPE_PREFERRED : Preferred mode , usually the native
* resolution of an LCD panel . There should only be one preferred
* mode per connector at any given time .
* - DRM_MODE_TYPE_DRIVER : Mode created by the driver , which is all of
* them really . Drivers must set this bit for all modes they create
* and expose to userspace .
* - DRM_MODE_TYPE_USERDEF : Mode defined or selected via the kernel
* command line .
*
* Plus a big list of flags which shouldn ' t be used at all , but are
* still around since these flags are also used in the userspace ABI .
* We no longer accept modes with these types though :
*
* - DRM_MODE_TYPE_BUILTIN : Meant for hard - coded modes , unused .
* Use DRM_MODE_TYPE_DRIVER instead .
* - DRM_MODE_TYPE_DEFAULT : Again a leftover , use
* DRM_MODE_TYPE_PREFERRED instead .
* - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C : Define leftovers
* which are stuck around for hysterical raisins only . No one has an
* idea what they were meant for . Don ' t use .
*/
u8 type;
/**
* @ expose_to_userspace :
*
* Indicates whether the mode is to be exposed to the userspace .
* This is to maintain a set of exposed modes while preparing
* user - mode ' s list in drm_mode_getconnector ioctl . The purpose of
* this only lies in the ioctl function , and is not to be used
* outside the function .
*/
bool expose_to_userspace;
/**
* @ head :
*
* struct list_head for mode lists .
*/
struct list_head head;
/**
* @ name :
*
* Human - readable name of the mode , filled out with drm_mode_set_name ( ) .
*/
char name[DRM_DISPLAY_MODE_LEN];
/**
* @ status :
*
* Status of the mode , used to filter out modes not supported by the
* hardware . See enum & drm_mode_status .
*/
enum drm_mode_status status;
/**
* @ picture_aspect_ratio :
*
* Field for setting the HDMI picture aspect ratio of a mode .
*/
enum hdmi_picture_aspect picture_aspect_ratio;
};
/**
* DRM_MODE_FMT - printf string for & struct drm_display_mode
*/
#define DRM_MODE_FMT "\" %s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x"
/**
* DRM_MODE_ARG - printf arguments for & struct drm_display_mode
* @ m : display mode
*/
#define DRM_MODE_ARG(m) \
(m)->name, drm_mode_vrefresh(m), (m)->clock, \
(m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \
(m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \
(m)->type, (m)->flags
#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
/**
* drm_mode_is_stereo - check for stereo mode flags
* @ mode : drm_display_mode to check
*
* Returns :
* True if the mode is one of the stereo modes ( like side - by - side ) , false if
* not .
*/
static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode)
{
return mode->flags & DRM_MODE_FLAG_3D_MASK;
}
struct drm_connector;
struct drm_cmdline_mode;
struct drm_display_mode *drm_mode_create(struct drm_device *dev);
void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,
const struct drm_display_mode *in);
int drm_mode_convert_umode(struct drm_device *dev,
struct drm_display_mode *out,
const struct drm_mode_modeinfo *in);
void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
bool drm_mode_is_420_only(const struct drm_display_info *display,
const struct drm_display_mode *mode);
bool drm_mode_is_420_also(const struct drm_display_info *display,
const struct drm_display_mode *mode);
bool drm_mode_is_420(const struct drm_display_info *display,
const struct drm_display_mode *mode);
void drm_set_preferred_mode(struct drm_connector *connector,
int hpref, int vpref);
struct drm_display_mode *drm_analog_tv_mode(struct drm_device *dev,
enum drm_connector_tv_mode mode,
unsigned long pixel_clock_hz,
unsigned int hdisplay,
unsigned int vdisplay,
bool interlace);
static inline struct drm_display_mode *drm_mode_analog_ntsc_480i(struct drm_device *dev)
{
return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_NTSC, 13500000 , 720 , 480 , true );
}
static inline struct drm_display_mode *drm_mode_analog_pal_576i(struct drm_device *dev)
{
return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_PAL, 13500000 , 720 , 576 , true );
}
struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
int hdisplay, int vdisplay, int vrefresh,
bool reduced, bool interlaced,
bool margins);
struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
int hdisplay, int vdisplay, int vrefresh,
bool interlaced, int margins);
struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
int hdisplay, int vdisplay,
int vrefresh, bool interlaced,
int margins,
int GTF_M, int GTF_2C,
int GTF_K, int GTF_2J);
void drm_display_mode_from_videomode(const struct videomode *vm,
struct drm_display_mode *dmode);
void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
struct videomode *vm);
void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags);
#if defined (CONFIG_OF)
int of_get_drm_display_mode(struct device_node *np,
struct drm_display_mode *dmode, u32 *bus_flags,
int index);
int of_get_drm_panel_display_mode(struct device_node *np,
struct drm_display_mode *dmode, u32 *bus_flags);
#else
static inline int of_get_drm_display_mode(struct device_node *np,
struct drm_display_mode *dmode,
u32 *bus_flags, int index)
{
return -EINVAL;
}
static inline int of_get_drm_panel_display_mode(struct device_node *np,
struct drm_display_mode *dmode, u32 *bus_flags)
{
return -EINVAL;
}
#endif
void drm_mode_set_name(struct drm_display_mode *mode);
int drm_mode_vrefresh(const struct drm_display_mode *mode);
void drm_mode_get_hv_timing(const struct drm_display_mode *mode,
int *hdisplay, int *vdisplay);
void drm_mode_set_crtcinfo(struct drm_display_mode *p,
int adjust_flags);
void drm_mode_copy(struct drm_display_mode *dst,
const struct drm_display_mode *src);
void drm_mode_init(struct drm_display_mode *dst,
const struct drm_display_mode *src);
struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
const struct drm_display_mode *mode);
bool drm_mode_match(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2,
unsigned int match_flags);
bool drm_mode_equal(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2);
bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2);
bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2);
/* for use by the crtc helper probe functions */
enum drm_mode_status drm_mode_validate_driver(struct drm_device *dev,
const struct drm_display_mode *mode);
enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
int maxX, int maxY);
enum drm_mode_status
drm_mode_validate_ycbcr420(const struct drm_display_mode *mode,
struct drm_connector *connector);
void drm_mode_prune_invalid(struct drm_device *dev,
struct list_head *mode_list, bool verbose);
void drm_mode_sort(struct list_head *mode_list);
void drm_connector_list_update(struct drm_connector *connector);
/* parsing cmdline modes */
bool
drm_mode_parse_command_line_for_connector(const char *mode_option,
const struct drm_connector *connector,
struct drm_cmdline_mode *mode);
struct drm_display_mode *
drm_mode_create_from_cmdline_mode(struct drm_device *dev,
struct drm_cmdline_mode *cmd);
#endif /* __DRM_MODES_H__ */
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