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linux/drivers/gpu/drm/gma500/psb_intel_drv.h
Paul Kocialkowski f76c22ce8f drm/gma500: Add page flip support on psb/cdv 
Legacy (non-atomic) page flip support is added to the driver by using the
mode_set_base CRTC function, that allows configuring a new framebuffer for
display. Since the function requires the primary plane's fb to be set
already, this is done prior to calling the function in the page flip helper
and reverted if the flip fails.

The vblank interrupt handler is also refactored to support passing an event.
The PIPE_TE_STATUS bit is also considered to indicate vblank on medfield
only, as explained in psb_enable_vblank.

It was tested by running weston on both poulsbo and cedartrail.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106094400.445834-3-paul.kocialkowski@bootlin.com
2019-11-07 10:16:31 +01:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2009-2011, Intel Corporation.
*/
#ifndef __INTEL_DRV_H__
#define __INTEL_DRV_H__
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
#include <linux/gpio.h>
#include "gma_display.h"
/*
* Display related stuff
*/
/* maximum connectors per crtcs in the mode set */
#define INTELFB_CONN_LIMIT 4
/* Intel Pipe Clone Bit */
#define INTEL_HDMIB_CLONE_BIT 1
#define INTEL_HDMIC_CLONE_BIT 2
#define INTEL_HDMID_CLONE_BIT 3
#define INTEL_HDMIE_CLONE_BIT 4
#define INTEL_HDMIF_CLONE_BIT 5
#define INTEL_SDVO_NON_TV_CLONE_BIT 6
#define INTEL_SDVO_TV_CLONE_BIT 7
#define INTEL_SDVO_LVDS_CLONE_BIT 8
#define INTEL_ANALOG_CLONE_BIT 9
#define INTEL_TV_CLONE_BIT 10
#define INTEL_DP_B_CLONE_BIT 11
#define INTEL_DP_C_CLONE_BIT 12
#define INTEL_DP_D_CLONE_BIT 13
#define INTEL_LVDS_CLONE_BIT 14
#define INTEL_DVO_TMDS_CLONE_BIT 15
#define INTEL_DVO_LVDS_CLONE_BIT 16
#define INTEL_EDP_CLONE_BIT 17
/* these are outputs from the chip - integrated only
* external chips are via DVO or SDVO output */
#define INTEL_OUTPUT_UNUSED 0
#define INTEL_OUTPUT_ANALOG 1
#define INTEL_OUTPUT_DVO 2
#define INTEL_OUTPUT_SDVO 3
#define INTEL_OUTPUT_LVDS 4
#define INTEL_OUTPUT_TVOUT 5
#define INTEL_OUTPUT_HDMI 6
#define INTEL_OUTPUT_MIPI 7
#define INTEL_OUTPUT_MIPI2 8
#define INTEL_OUTPUT_DISPLAYPORT 9
#define INTEL_OUTPUT_EDP 10
#define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
#define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)
static inline void
psb_intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
int multiplier)
{
mode->clock *= multiplier;
mode->private_flags |= multiplier;
}
static inline int
psb_intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
{
return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK)
>> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
}
/*
* Hold information useally put on the device driver privates here,
* since it needs to be shared across multiple of devices drivers privates.
*/
struct psb_intel_mode_device {
/*
* Abstracted memory manager operations
*/
size_t(*bo_offset) (struct drm_device *dev, void *bo);
/*
* LVDS info
*/
int backlight_duty_cycle; /* restore backlight to this value */
bool panel_wants_dither;
struct drm_display_mode *panel_fixed_mode;
struct drm_display_mode *panel_fixed_mode2;
struct drm_display_mode *vbt_mode; /* if any */
uint32_t saveBLC_PWM_CTL;
};
struct psb_intel_i2c_chan {
/* for getting at dev. private (mmio etc.) */
struct drm_device *drm_dev;
u32 reg; /* GPIO reg */
struct i2c_adapter adapter;
struct i2c_algo_bit_data algo;
u8 slave_addr;
};
struct gma_encoder {
struct drm_encoder base;
int type;
bool needs_tv_clock;
void (*hot_plug)(struct gma_encoder *);
int crtc_mask;
int clone_mask;
u32 ddi_select; /* Channel info */
#define DDI0_SELECT 0x01
#define DDI1_SELECT 0x02
#define DP_MASK 0x8000
#define DDI_MASK 0x03
void *dev_priv; /* For sdvo_priv, lvds_priv, etc... */
/* FIXME: Either make SDVO and LVDS store it's i2c here or give CDV it's
own set of output privates */
struct psb_intel_i2c_chan *i2c_bus;
struct psb_intel_i2c_chan *ddc_bus;
};
struct gma_connector {
struct drm_connector base;
struct gma_encoder *encoder;
void (*save)(struct drm_connector *connector);
void (*restore)(struct drm_connector *connector);
};
struct psb_intel_crtc_state {
uint32_t saveDSPCNTR;
uint32_t savePIPECONF;
uint32_t savePIPESRC;
uint32_t saveDPLL;
uint32_t saveFP0;
uint32_t saveFP1;
uint32_t saveHTOTAL;
uint32_t saveHBLANK;
uint32_t saveHSYNC;
uint32_t saveVTOTAL;
uint32_t saveVBLANK;
uint32_t saveVSYNC;
uint32_t saveDSPSTRIDE;
uint32_t saveDSPSIZE;
uint32_t saveDSPPOS;
uint32_t saveDSPBASE;
uint32_t savePalette[256];
};
struct gma_crtc {
struct drm_crtc base;
int pipe;
int plane;
uint32_t cursor_addr;
struct gtt_range *cursor_gt;
u8 lut_adj[256];
struct psb_intel_framebuffer *fbdev_fb;
/* a mode_set for fbdev users on this crtc */
struct drm_mode_set mode_set;
/* GEM object that holds our cursor */
struct drm_gem_object *cursor_obj;
struct drm_display_mode saved_mode;
struct drm_display_mode saved_adjusted_mode;
struct psb_intel_mode_device *mode_dev;
/*crtc mode setting flags*/
u32 mode_flags;
bool active;
/* Saved Crtc HW states */
struct psb_intel_crtc_state *crtc_state;
const struct gma_clock_funcs *clock_funcs;
struct drm_pending_vblank_event *page_flip_event;
};
#define to_gma_crtc(x) \
container_of(x, struct gma_crtc, base)
#define to_gma_connector(x) \
container_of(x, struct gma_connector, base)
#define to_gma_encoder(x) \
container_of(x, struct gma_encoder, base)
#define to_psb_intel_framebuffer(x) \
container_of(x, struct psb_intel_framebuffer, base)
struct psb_intel_i2c_chan *psb_intel_i2c_create(struct drm_device *dev,
const u32 reg, const char *name);
void psb_intel_i2c_destroy(struct psb_intel_i2c_chan *chan);
int psb_intel_ddc_get_modes(struct drm_connector *connector,
struct i2c_adapter *adapter);
extern bool psb_intel_ddc_probe(struct i2c_adapter *adapter);
extern void psb_intel_crtc_init(struct drm_device *dev, int pipe,
struct psb_intel_mode_device *mode_dev);
extern void psb_intel_crt_init(struct drm_device *dev);
extern bool psb_intel_sdvo_init(struct drm_device *dev, int output_device);
extern void psb_intel_dvo_init(struct drm_device *dev);
extern void psb_intel_tv_init(struct drm_device *dev);
extern void psb_intel_lvds_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev);
extern void psb_intel_lvds_set_brightness(struct drm_device *dev, int level);
extern void oaktrail_lvds_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev);
extern void oaktrail_wait_for_INTR_PKT_SENT(struct drm_device *dev);
extern void oaktrail_dsi_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev);
extern void oaktrail_lvds_i2c_init(struct drm_encoder *encoder);
extern void mid_dsi_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev, int dsi_num);
extern struct drm_encoder *gma_best_encoder(struct drm_connector *connector);
extern void gma_connector_attach_encoder(struct gma_connector *connector,
struct gma_encoder *encoder);
static inline struct gma_encoder *gma_attached_encoder(
struct drm_connector *connector)
{
return to_gma_connector(connector)->encoder;
}
extern struct drm_display_mode *psb_intel_crtc_mode_get(struct drm_device *dev,
struct drm_crtc *crtc);
extern struct drm_crtc *psb_intel_get_crtc_from_pipe(struct drm_device *dev,
int pipe);
extern struct drm_connector *psb_intel_sdvo_find(struct drm_device *dev,
int sdvoB);
extern int psb_intel_sdvo_supports_hotplug(struct drm_connector *connector);
extern void psb_intel_sdvo_set_hotplug(struct drm_connector *connector,
int enable);
extern int intelfb_probe(struct drm_device *dev);
extern int intelfb_remove(struct drm_device *dev,
struct drm_framebuffer *fb);
extern bool psb_intel_lvds_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
extern enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode);
extern int psb_intel_lvds_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t value);
extern void psb_intel_lvds_destroy(struct drm_connector *connector);
extern const struct drm_encoder_funcs psb_intel_lvds_enc_funcs;
/* intel_gmbus.c */
extern void gma_intel_i2c_reset(struct drm_device *dev);
extern int gma_intel_setup_gmbus(struct drm_device *dev);
extern void gma_intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
extern void gma_intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
extern void gma_intel_teardown_gmbus(struct drm_device *dev);
/* DP support */
extern void cdv_intel_dp_init(struct drm_device *dev, struct psb_intel_mode_device *mode_dev, int output_reg);
extern void cdv_intel_dp_set_m_n(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
extern void psb_intel_attach_force_audio_property(struct drm_connector *connector);
extern void psb_intel_attach_broadcast_rgb_property(struct drm_connector *connector);
extern int cdv_sb_read(struct drm_device *dev, u32 reg, u32 *val);
extern int cdv_sb_write(struct drm_device *dev, u32 reg, u32 val);
extern void cdv_sb_reset(struct drm_device *dev);
extern void cdv_intel_attach_force_audio_property(struct drm_connector *connector);
extern void cdv_intel_attach_broadcast_rgb_property(struct drm_connector *connector);
#endif /* __INTEL_DRV_H__ */
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