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/*
* Copyright 2012 James Simmons <jsimmons@infradead.org> 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, sub license,
* 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) OR COPYRIGHT HOLDER(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 _VIA_DISPLAY_H_
#define _VIA_DISPLAY_H_
#include <video/vga.h>
#include "crtc_hw.h"
#include "drm_edid.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
#include "drm_plane_helper.h"
#include "drm_fb_helper.h"
/* IGA Scaling disable */
#define VIA_NO_SCALING 0
/* IGA Scaling down */
#define VIA_HOR_SHRINK BIT(0)
#define VIA_VER_SHRINK BIT(1)
#define VIA_SHRINK (BIT(0) | BIT(1))
/* IGA Scaling up */
#define VIA_HOR_EXPAND BIT(2)
#define VIA_VER_EXPAND BIT(3)
#define VIA_EXPAND (BIT(2) | BIT(3))
/* Define IGA Scaling up/down status : Horizontal or Vertical */
/* Is IGA Hor scaling up/down status */
#define HOR_SCALE BIT(0)
/* Is IGA Ver scaling up/down status */
#define VER_SCALE BIT(1)
/* Is IGA Hor and Ver scaling up/down status */
#define HOR_VER_SCALE (BIT(0) | BIT(1))
struct via_crtc {
struct drm_crtc base;
struct ttm_bo_kmap_obj cursor_kmap;
struct crtc_timings pixel_timings;
struct crtc_timings timings;
unsigned int display_queue_expire_num;
unsigned int fifo_high_threshold;
unsigned int fifo_threshold;
unsigned int fifo_max_depth;
struct vga_registers display_queue;
struct vga_registers high_threshold;
struct vga_registers threshold;
struct vga_registers fifo_depth;
struct vga_registers offset;
struct vga_registers fetch;
int scaling_mode;
uint8_t index;
};
struct via_connector {
struct drm_connector base;
struct i2c_adapter *ddc_bus;
struct list_head props;
uint32_t flags;
};
#define VIA_DI_PORT_NONE 0x00
#define VIA_DI_PORT_DIP0 BIT(0)
#define VIA_DI_PORT_DIP1 BIT(1)
#define VIA_DI_PORT_DVP0 BIT(2)
#define VIA_DI_PORT_DVP1 BIT(3)
#define VIA_DI_PORT_DFPL BIT(4)
#define VIA_DI_PORT_FPDPLOW BIT(4)
#define VIA_DI_PORT_DFPH BIT(5)
#define VIA_DI_PORT_FPDPHIGH BIT(5)
#define VIA_DI_PORT_DFP BIT(6)
#define VIA_DI_PORT_LVDS1 BIT(7)
#define VIA_DI_PORT_LVDS2 BIT(8)
struct via_encoder {
struct drm_encoder base;
uint32_t flags;
u32 di_port;
struct via_connector cons[];
};
static inline void
via_lock_crtc(void __iomem *regs)
{
svga_wcrt_mask(regs, 0x11, BIT(7), BIT(7));
}
static inline void
via_unlock_crtc(void __iomem *regs, int pci_id)
{
u8 mask = BIT(0);
svga_wcrt_mask(regs, 0x11, 0, BIT(7));
if ((pci_id == PCI_DEVICE_ID_VIA_VX875) ||
(pci_id == PCI_DEVICE_ID_VIA_VX900_VGA))
mask = BIT(4);
svga_wcrt_mask(regs, 0x47, 0, mask);
}
static inline void
enable_second_display_channel(void __iomem *regs)
{
svga_wcrt_mask(regs, 0x6A, BIT(7), BIT(7));
}
static inline void
disable_second_display_channel(void __iomem *regs)
{
svga_wcrt_mask(regs, 0x6A, 0x00, BIT(7));
}
/* display */
extern int via_modeset_init(struct drm_device *dev);
extern void via_modeset_fini(struct drm_device *dev);
/* i2c */
extern struct i2c_adapter *via_find_ddc_bus(int port);
extern int via_i2c_init(struct drm_device *dev);
extern void via_i2c_exit(void);
/* clock */
extern u32 via_get_clk_value(struct drm_device *dev, u32 clk);
extern void via_set_vclock(struct drm_crtc *crtc, u32 clk);
/* framebuffers */
extern int via_fbdev_init(struct drm_device *dev, struct drm_fb_helper **ptr);
extern void via_framebuffer_fini(struct drm_device *dev);
/* crtc */
extern void via_load_crtc_pixel_timing(struct drm_crtc *crtc,
struct drm_display_mode *mode);
extern void via_crtc_init(struct drm_device *dev, int index);
/* encoders */
extern void via_set_sync_polarity(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
extern struct drm_encoder *via_best_encoder(struct drm_connector *connector);
extern void via_encoder_cleanup(struct drm_encoder *encoder);
extern void via_encoder_prepare(struct drm_encoder *encoder);
extern void via_encoder_disable(struct drm_encoder *encoder);
extern void via_encoder_commit(struct drm_encoder *encoder);
/* connectors */
extern int via_connector_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t value);
extern int via_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode);
extern void via_connector_destroy(struct drm_connector *connector);
extern int via_get_edid_modes(struct drm_connector *connector);
extern void via_hdmi_init(struct drm_device *dev, u32 di_port);
extern void via_analog_init(struct drm_device *dev);
extern void via_lvds_init(struct drm_device *dev);
extern int via_tmds_init(struct drm_device *dev);
#endif
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