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/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MDP4_KMS_H__
#define __MDP4_KMS_H__
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include "msm_drv.h"
#include "mdp4.xml.h"
/* For transiently registering for different MDP4 irqs that various parts
* of the KMS code need during setup/configuration. We these are not
* necessarily the same as what drm_vblank_get/put() are requesting, and
* the hysteresis in drm_vblank_put() is not necessarily desirable for
* internal housekeeping related irq usage.
*/
struct mdp4_irq {
struct list_head node;
uint32_t irqmask;
bool registered;
void (*irq)(struct mdp4_irq *irq, uint32_t irqstatus);
};
struct mdp4_kms {
struct msm_kms base;
struct drm_device *dev;
int rev;
/* mapper-id used to request GEM buffer mapped for scanout: */
int id;
void __iomem *mmio;
struct regulator *dsi_pll_vdda;
struct regulator *dsi_pll_vddio;
struct regulator *vdd;
struct clk *clk;
struct clk *pclk;
struct clk *lut_clk;
/* irq handling: */
bool in_irq;
struct list_head irq_list; /* list of mdp4_irq */
uint32_t vblank_mask; /* irq bits set for userspace vblank */
struct mdp4_irq error_handler;
};
#define to_mdp4_kms(x) container_of(x, struct mdp4_kms, base)
/* platform config data (ie. from DT, or pdata) */
struct mdp4_platform_config {
struct iommu_domain *iommu;
uint32_t max_clk;
};
struct mdp4_format {
struct msm_format base;
enum mpd4_bpc bpc_r, bpc_g, bpc_b;
enum mpd4_bpc_alpha bpc_a;
uint8_t unpack[4];
bool alpha_enable, unpack_tight;
uint8_t cpp, unpack_count;
};
#define to_mdp4_format(x) container_of(x, struct mdp4_format, base)
static inline void mdp4_write(struct mdp4_kms *mdp4_kms, u32 reg, u32 data)
{
msm_writel(data, mdp4_kms->mmio + reg);
}
static inline u32 mdp4_read(struct mdp4_kms *mdp4_kms, u32 reg)
{
return msm_readl(mdp4_kms->mmio + reg);
}
static inline uint32_t pipe2flush(enum mpd4_pipe pipe)
{
switch (pipe) {
case VG1: return MDP4_OVERLAY_FLUSH_VG1;
case VG2: return MDP4_OVERLAY_FLUSH_VG2;
case RGB1: return MDP4_OVERLAY_FLUSH_RGB1;
case RGB2: return MDP4_OVERLAY_FLUSH_RGB1;
default: return 0;
}
}
static inline uint32_t ovlp2flush(int ovlp)
{
switch (ovlp) {
case 0: return MDP4_OVERLAY_FLUSH_OVLP0;
case 1: return MDP4_OVERLAY_FLUSH_OVLP1;
default: return 0;
}
}
static inline uint32_t dma2irq(enum mdp4_dma dma)
{
switch (dma) {
case DMA_P: return MDP4_IRQ_DMA_P_DONE;
case DMA_S: return MDP4_IRQ_DMA_S_DONE;
case DMA_E: return MDP4_IRQ_DMA_E_DONE;
default: return 0;
}
}
static inline uint32_t dma2err(enum mdp4_dma dma)
{
switch (dma) {
case DMA_P: return MDP4_IRQ_PRIMARY_INTF_UDERRUN;
case DMA_S: return 0; // ???
case DMA_E: return MDP4_IRQ_EXTERNAL_INTF_UDERRUN;
default: return 0;
}
}
int mdp4_disable(struct mdp4_kms *mdp4_kms);
int mdp4_enable(struct mdp4_kms *mdp4_kms);
void mdp4_irq_preinstall(struct msm_kms *kms);
int mdp4_irq_postinstall(struct msm_kms *kms);
void mdp4_irq_uninstall(struct msm_kms *kms);
irqreturn_t mdp4_irq(struct msm_kms *kms);
void mdp4_irq_wait(struct mdp4_kms *mdp4_kms, uint32_t irqmask);
void mdp4_irq_register(struct mdp4_kms *mdp4_kms, struct mdp4_irq *irq);
void mdp4_irq_unregister(struct mdp4_kms *mdp4_kms, struct mdp4_irq *irq);
int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
const struct msm_format *mdp4_get_format(struct msm_kms *kms, uint32_t format);
void mdp4_plane_install_properties(struct drm_plane *plane,
struct drm_mode_object *obj);
void mdp4_plane_set_scanout(struct drm_plane *plane,
struct drm_framebuffer *fb);
int mdp4_plane_mode_set(struct drm_plane *plane,
struct drm_crtc *crtc, struct drm_framebuffer *fb,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h);
enum mpd4_pipe mdp4_plane_pipe(struct drm_plane *plane);
struct drm_plane *mdp4_plane_init(struct drm_device *dev,
enum mpd4_pipe pipe_id, bool private_plane);
uint32_t mdp4_crtc_vblank(struct drm_crtc *crtc);
void mdp4_crtc_cancel_pending_flip(struct drm_crtc *crtc);
void mdp4_crtc_set_config(struct drm_crtc *crtc, uint32_t config);
void mdp4_crtc_set_intf(struct drm_crtc *crtc, enum mdp4_intf intf);
struct drm_crtc *mdp4_crtc_init(struct drm_device *dev,
struct drm_plane *plane, int id, int ovlp_id,
enum mdp4_dma dma_id);
long mdp4_dtv_round_pixclk(struct drm_encoder *encoder, unsigned long rate);
struct drm_encoder *mdp4_dtv_encoder_init(struct drm_device *dev);
#ifdef CONFIG_MSM_BUS_SCALING
static inline int match_dev_name(struct device *dev, void *data)
{
return !strcmp(dev_name(dev), data);
}
/* bus scaling data is associated with extra pointless platform devices,
* "dtv", etc.. this is a bit of a hack, but we need a way for encoders
* to find their pdata to make the bus-scaling stuff work.
*/
static inline void *mdp4_find_pdata(const char *devname)
{
struct device *dev;
dev = bus_find_device(&platform_bus_type, NULL,
(void *)devname, match_dev_name);
return dev ? dev->platform_data : NULL;
}
#endif
#endif /* __MDP4_KMS_H__ */
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