mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
cfd8d744fe
VIDeo plug are one of the compositor input sub-devices. VID are dedicated to video inputs like YUV plans. Like GDP, VID are part of Compositor hardware block and use sti_layer structure to provide an abstraction for Compositor calls. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Reviewed-by: Rob Clark <robdclark@gmail.com>
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
|
|
* Copyright (C) STMicroelectronics SA 2014
|
|
* Author: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
|
|
* License terms: GNU General Public License (GPL), version 2
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include "sti_layer.h"
|
|
#include "sti_vid.h"
|
|
#include "sti_vtg.h"
|
|
|
|
/* Registers */
|
|
#define VID_CTL 0x00
|
|
#define VID_ALP 0x04
|
|
#define VID_CLF 0x08
|
|
#define VID_VPO 0x0C
|
|
#define VID_VPS 0x10
|
|
#define VID_KEY1 0x28
|
|
#define VID_KEY2 0x2C
|
|
#define VID_MPR0 0x30
|
|
#define VID_MPR1 0x34
|
|
#define VID_MPR2 0x38
|
|
#define VID_MPR3 0x3C
|
|
#define VID_MST 0x68
|
|
#define VID_BC 0x70
|
|
#define VID_TINT 0x74
|
|
#define VID_CSAT 0x78
|
|
|
|
/* Registers values */
|
|
#define VID_CTL_IGNORE (BIT(31) | BIT(30))
|
|
#define VID_CTL_PSI_ENABLE (BIT(2) | BIT(1) | BIT(0))
|
|
#define VID_ALP_OPAQUE 0x00000080
|
|
#define VID_BC_DFLT 0x00008000
|
|
#define VID_TINT_DFLT 0x00000000
|
|
#define VID_CSAT_DFLT 0x00000080
|
|
/* YCbCr to RGB BT709:
|
|
* R = Y+1.5391Cr
|
|
* G = Y-0.4590Cr-0.1826Cb
|
|
* B = Y+1.8125Cb */
|
|
#define VID_MPR0_BT709 0x0A800000
|
|
#define VID_MPR1_BT709 0x0AC50000
|
|
#define VID_MPR2_BT709 0x07150545
|
|
#define VID_MPR3_BT709 0x00000AE8
|
|
|
|
static int sti_vid_prepare_layer(struct sti_layer *vid, bool first_prepare)
|
|
{
|
|
u32 val;
|
|
|
|
/* Unmask */
|
|
val = readl(vid->regs + VID_CTL);
|
|
val &= ~VID_CTL_IGNORE;
|
|
writel(val, vid->regs + VID_CTL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sti_vid_commit_layer(struct sti_layer *vid)
|
|
{
|
|
struct drm_display_mode *mode = vid->mode;
|
|
u32 ydo, xdo, yds, xds;
|
|
|
|
ydo = sti_vtg_get_line_number(*mode, vid->dst_y);
|
|
yds = sti_vtg_get_line_number(*mode, vid->dst_y + vid->dst_h - 1);
|
|
xdo = sti_vtg_get_pixel_number(*mode, vid->dst_x);
|
|
xds = sti_vtg_get_pixel_number(*mode, vid->dst_x + vid->dst_w - 1);
|
|
|
|
writel((ydo << 16) | xdo, vid->regs + VID_VPO);
|
|
writel((yds << 16) | xds, vid->regs + VID_VPS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sti_vid_disable_layer(struct sti_layer *vid)
|
|
{
|
|
u32 val;
|
|
|
|
/* Mask */
|
|
val = readl(vid->regs + VID_CTL);
|
|
val |= VID_CTL_IGNORE;
|
|
writel(val, vid->regs + VID_CTL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const uint32_t *sti_vid_get_formats(struct sti_layer *layer)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static unsigned int sti_vid_get_nb_formats(struct sti_layer *layer)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void sti_vid_init(struct sti_layer *vid)
|
|
{
|
|
/* Enable PSI, Mask layer */
|
|
writel(VID_CTL_PSI_ENABLE | VID_CTL_IGNORE, vid->regs + VID_CTL);
|
|
|
|
/* Opaque */
|
|
writel(VID_ALP_OPAQUE, vid->regs + VID_ALP);
|
|
|
|
/* Color conversion parameters */
|
|
writel(VID_MPR0_BT709, vid->regs + VID_MPR0);
|
|
writel(VID_MPR1_BT709, vid->regs + VID_MPR1);
|
|
writel(VID_MPR2_BT709, vid->regs + VID_MPR2);
|
|
writel(VID_MPR3_BT709, vid->regs + VID_MPR3);
|
|
|
|
/* Brightness, contrast, tint, saturation */
|
|
writel(VID_BC_DFLT, vid->regs + VID_BC);
|
|
writel(VID_TINT_DFLT, vid->regs + VID_TINT);
|
|
writel(VID_CSAT_DFLT, vid->regs + VID_CSAT);
|
|
}
|
|
|
|
static const struct sti_layer_funcs vid_ops = {
|
|
.get_formats = sti_vid_get_formats,
|
|
.get_nb_formats = sti_vid_get_nb_formats,
|
|
.init = sti_vid_init,
|
|
.prepare = sti_vid_prepare_layer,
|
|
.commit = sti_vid_commit_layer,
|
|
.disable = sti_vid_disable_layer,
|
|
};
|
|
|
|
struct sti_layer *sti_vid_create(struct device *dev)
|
|
{
|
|
struct sti_layer *vid;
|
|
|
|
vid = devm_kzalloc(dev, sizeof(*vid), GFP_KERNEL);
|
|
if (!vid) {
|
|
DRM_ERROR("Failed to allocate memory for VID\n");
|
|
return NULL;
|
|
}
|
|
|
|
vid->ops = &vid_ops;
|
|
|
|
return vid;
|
|
}
|