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 --- drivers/gpu/drm/sti/Makefile | 3 +- drivers/gpu/drm/sti/sti_layer.h | 3 + drivers/gpu/drm/sti/sti_vid.c | 138 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/sti/sti_vid.h | 33 ++++++++++ 4 files changed, 176 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/sti/sti_vid.c create mode 100644 drivers/gpu/drm/sti/sti_vid.h
diff --git a/drivers/gpu/drm/sti/Makefile b/drivers/gpu/drm/sti/Makefile index 1745697..bb0f6b3 100644 --- a/drivers/gpu/drm/sti/Makefile +++ b/drivers/gpu/drm/sti/Makefile @@ -6,4 +6,5 @@ obj-$(CONFIG_DRM_STI) += \ sti_hdmi_tx3g4c28phy.o \ sti_hda.o \ sti_tvout.o \ - sti_gdp.o \ No newline at end of file + sti_gdp.o \ + sti_vid.o \ No newline at end of file diff --git a/drivers/gpu/drm/sti/sti_layer.h b/drivers/gpu/drm/sti/sti_layer.h index 7ba5a40..c8a159d 100644 --- a/drivers/gpu/drm/sti/sti_layer.h +++ b/drivers/gpu/drm/sti/sti_layer.h @@ -11,6 +11,7 @@
#include <drm/drmP.h> #include "sti_gdp.h" +#include "sti_vid.h"
#define to_sti_layer(x) container_of(x, struct sti_layer, plane)
@@ -70,6 +71,7 @@ struct sti_fps_info { * @paddr: physical address of the input buffer * @fps_info: frame per second info * @gdp: related GDP (if the layer is a GDP) + * @vid: related VID (if the layer is a VID/VDP) */ struct sti_layer { struct drm_plane plane; @@ -89,6 +91,7 @@ struct sti_layer { dma_addr_t paddr; struct sti_fps_info fps_info; struct sti_gdp *gdp; + struct sti_vid *vid; };
struct sti_layer *sti_layer_create(struct device *dev, int desc, diff --git a/drivers/gpu/drm/sti/sti_vid.c b/drivers/gpu/drm/sti/sti_vid.c new file mode 100644 index 0000000..0197291 --- /dev/null +++ b/drivers/gpu/drm/sti/sti_vid.c @@ -0,0 +1,138 @@ +/* + * 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(void *lay, bool first_prepare) +{ + u32 val; + struct sti_layer *layer = (struct sti_layer *)lay; + struct sti_vid *vid = layer->vid; + + /* 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(void *lay) +{ + struct sti_layer *layer = (struct sti_layer *)lay; + struct sti_vid *vid = layer->vid; + struct drm_display_mode *mode = layer->mode; + u32 ydo, xdo, yds, xds; + + ydo = sti_vtg_get_line_number(*mode, layer->dst_y); + yds = sti_vtg_get_line_number(*mode, layer->dst_y + layer->dst_h - 1); + xdo = sti_vtg_get_pixel_number(*mode, layer->dst_x); + xds = sti_vtg_get_pixel_number(*mode, layer->dst_x + layer->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(void *lay) +{ + u32 val; + struct sti_layer *layer = (struct sti_layer *)lay; + struct sti_vid *vid = layer->vid; + + /* Mask */ + val = readl(vid->regs + VID_CTL); + val |= VID_CTL_IGNORE; + writel(val, vid->regs + VID_CTL); + + return 0; +} + +static void sti_vid_set_default(struct sti_vid *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); +} + +struct sti_vid *sti_vid_create(struct device *dev, void __iomem *baseaddr) +{ + struct sti_vid *vid; + + DRM_DEBUG_DRIVER("\n"); + + vid = devm_kzalloc(dev, sizeof(*vid), GFP_KERNEL); + if (!vid) { + DRM_ERROR("Failed to allocate memory for VID\n"); + return NULL; + } + + vid->dev = dev; + vid->regs = baseaddr; + vid->prepare = sti_vid_prepare_layer; + vid->commit = sti_vid_commit_layer; + vid->disable = sti_vid_disable_layer; + /* As the VID input is HW-mapped to the VDP output, the supported + * formats are under the VDP control */ + vid->get_formats = NULL; + vid->get_nb_formats = NULL; + + /* Set default configuration (static) */ + sti_vid_set_default(vid); + + return vid; +} diff --git a/drivers/gpu/drm/sti/sti_vid.h b/drivers/gpu/drm/sti/sti_vid.h new file mode 100644 index 0000000..4a502b0 --- /dev/null +++ b/drivers/gpu/drm/sti/sti_vid.h @@ -0,0 +1,33 @@ +/* + * Copyright (C) STMicroelectronics SA 2014 + * Author: Fabien Dessenne fabien.dessenne@st.com for STMicroelectronics. + * License terms: GNU General Public License (GPL), version 2 + */ + +#ifndef _STI_VID_H_ +#define _STI_VID_H_ + +/* + * STI VID structure + * + * @device: driver device + * @regs: subdevice register + * @get_formats: get VID supported formats + * @get_nb_formats: get number of format supported + * @prepare: prepare VID before rendering + * @commit: set VID for rendering + * @disable: disable VID + */ +struct sti_vid { + struct device *dev; + void __iomem *regs; + const uint32_t* (*get_formats)(void); + unsigned int (*get_nb_formats)(void); + int (*prepare)(void *layer, bool first_prepare); + int (*commit)(void *layer); + int (*disable)(void *layer); +}; + +struct sti_vid *sti_vid_create(struct device *dev, void __iomem *baseaddr); + +#endif