[RFC PATCH] drm/exynos: Add DECON driver
Ajay kumar
ajaynumb at gmail.com
Tue Nov 11 08:38:30 PST 2014
Hi Inki,
On Mon, Nov 3, 2014 at 3:31 PM, Inki Dae <inki.dae at samsung.com> wrote:
>
> Hi,
>
> Fortunately, I could get the user manual for Exynos7420. Below are my
> comments.
>
> Thanks,
> Inki Dae
>
> On 2014년 10월 23일 01:34, Ajay kumar wrote:
>> On Wed, Oct 22, 2014 at 8:26 PM, Inki Dae <inki.dae at samsung.com> wrote:
>>>
>>> Thanks for contribution.
>>>
>>> It seems reasonable that you separate device drivers into FIMD and DECON
>>> because many registers of them have many different offsets and fields.
>>> However, there may be a good solution that we can combine common sets of
>>> these drivers later.
>> Yes, this is the main reason behind sending this as RFC patch.
>> I want to know what's the best way to do this.
>> FIMD, 5433 DECON and Exynos7 DECON - all are different.
>> Also, in Exynos7 DECON-INT is same as DECON-EXT(Mixer).
>> So, even I am not sure how the driver layouts should be!
>
> Please, make sure Exynos SoC name, Exynos7410 or Exynos7420. In my
> understanding, Exynos7 doesn't mean one real SoC.
We shall use Exynos7 as per the discussion.
>>
>>> Below are my comments.
>>>
>>> Thanks,
>>> Inki Dae
>>>
>>> On 2014년 10월 10일 21:48, Ajay Kumar wrote:
>>>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>>>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>>>
>>>> DECON(Display and Enhancement Controller) is the new IP
>>>> in exynos7 SOC for generating video signals using pixel data.
>>>
>>> DECON was used since Exynos5430. And is Exynos5433 different from
>>> Exynos7? If so, could I get the Exynos7 user manual (TRM) for review?
>> Yes, Exynos5433 DECON is very much different than Exynos7 DECON.
>
> Do not use Exynos7 word and use Exynos7410 or Exynos7420 instead.
Again, we shall use Exynos7.
>> I will see how manual can be arranged.
>>
>>>>
>>>> DECON driver can be used to drive 2 different interfaces on Exynos7:
>>>> DECON-INT(video controller) and DECON-EXT(Mixer for HDMI)
>>>>
>>>> The existing FIMD driver code was used as a template to create
>>>> DECON driver. Only DECON-INT is supported as of now, and
>>>> DECON-EXT support will be added later.
>>>>
>>>> Signed-off-by: Akshu Agrawal <akshu.a at samsung.com>
>>>> Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
>>>> ---
>>>> .../devicetree/bindings/video/exynos-decon.txt | 68 ++
>>>> drivers/gpu/drm/exynos/Kconfig | 11 +-
>>>> drivers/gpu/drm/exynos/Makefile | 1 +
>>>> drivers/gpu/drm/exynos/exynos_drm_decon.c | 1086
>>> ++++++++++++++++++++
>>>> drivers/gpu/drm/exynos/exynos_drm_drv.c | 17 +-
>>>> drivers/gpu/drm/exynos/exynos_drm_drv.h | 11 +
>>>> include/video/samsung_decon.h | 346 +++++++
>>>> 7 files changed, 1537 insertions(+), 3 deletions(-)
>>>> create mode 100644
>>> Documentation/devicetree/bindings/video/exynos-decon.txt
>>>> create mode 100644 drivers/gpu/drm/exynos/exynos_drm_decon.c
>>>> create mode 100644 include/video/samsung_decon.h
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/video/exynos-decon.txt
>>> b/Documentation/devicetree/bindings/video/exynos-decon.txt
>>>> new file mode 100644
>>>> index 0000000..e865650
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/video/exynos-decon.txt
>>>> @@ -0,0 +1,68 @@
>>>> +Device-Tree bindings for Samsung Exynos7 SoC display controller (DECON)
>>>> +
>>>> +DECON (Display and Enhancement Controller) is the Display Controller
>>> for the
>>>> +Exynos7 series of SoCs which transfers the image data from a video memory
>>>> +buffer to an external LCD interface.
>>>> +
>>>> +Required properties:
>>>> +- compatible: value should be "samsung,exynos7-decon";
>>>
>>> If exynos5433 was just renamed to exynos7 then, it should be one of the
>>> following:
>>> (a) "samsung,exynos5430-decon" for Display and enhancement controller
>>> IP for Exynos5430
>>> (b) "samsung,exynos7" for Display and enhancement controller IP for Exynos7
>>>
>>> Or,
>>> (a) "samsung,exynos5430-decon" for Display and enhancement controller
>>> IP for Exynos5430
>>>
>>> (b) "samsung,exynos5433-decon" for Display and enhancement controller
>>> IP for Exynos5433
>>> (c) "samsung,exynos7" for Display and enhancement controller IP for Exynos7
>> Eventually, we will end up here.
>>
>>>
>>>> +
>>>> +- reg: physical base address and length of the DECON registers set.
>>>> +
>>>> +- interrupt-parent: should be the phandle of the decon controller's
>>>> + parent interrupt controller.
>>>> +
>>>> +- interrupts: should contain a list of all DECON IP block interrupts
>>> in the
>>>> + order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
>>>> + format depends on the interrupt controller used.
>>>> +
>>>> +- interrupt-names: should contain the interrupt names: "fifo", "vsync",
>>>> + "lcd_sys", in the same order as they were listed in the interrupts
>>>> + property.
>>>> +
>>>> +- pinctrl-0: pin control group to be used for this controller.
>>>> +
>>>> +- pinctrl-names: must contain a "default" entry.
>>>> +
>>>> +- clocks: must include clock specifiers corresponding to entries in the
>>>> + clock-names property.
>>>> +
>>>> +- clock-names: list of clock names sorted in the same order as the clocks
>>>> + property. Must contain "pclk_decon0", "aclk_decon0",
>>>> + "decon0_eclk", "decon0_vclk", "sclk_dsd", aclk_lh_disp0",
>>>> + "aclk_disp", "aclk_lh_disp1".
>>>
>>> Should DECON driver really control above all clocks? I think it's enough
>>> that DECON driver controls only lcd and bus clocks, and others could be
>>> configured by boot-loader or by calling clk_set_rate.
>> Yes, even I am not sure of the clocks. I have copied these clocks from intrnal
>> android code.
>>>> +
>>>> +Optional Properties:
>>>> +- samsung,power-domain: a phandle to DECON power domain node.
>>>
>>> You are missing many properties,
>>> samsung,invert-vden
>>> samsung,invert-vclk
>> These are not present in Exynos7 DECON!
>
> What does the CRCCTRL register mean? That definitely indicates above
> properties.
Hmm, even I am not sure about CRCCTRL register.
Currently, we don't actually set CRC on, and still I can see the display
on a MIPI DSI panel.
May be, I will know better once I bring up DP interface on Exynos7.
>>
>>> display-timings
>>> ...
>>> refer to below document,
>>> Documentation/devicetree/bindings/video/samsung-fimd.txt
>>>
>>>> +
>>>> +Example:
>>>> +
>>>> +SoC specific DT entry:
>>>> +
>>>> + decon at 13930000 {
>
> In case of Exynos7420, the base address of the DECON controller is
> 0x13950000. Does 0x1393000 mean the one for Exynos7410
There is DECON-INT(0x13930000) and DECON-EXT(0x13950000)
DECON-INT is the display controller, but DECON-EXT replaces mixer in Exynos7.
>>>> + compatible = "samsung,exynos7-decon";
>
> Therefore, it should be "samsung,exynos7410-decon" or
> "samsung,exynos7420-decon"
"samsung,exynos7-decon"
>>>> + interrupt-parent = <&combiner>;
>>>> + reg = <0x13930000 0x1000>;
>>>> + interrupt-names = "lcd_sys", "vsync", "fifo";
>>>> + interrupts = <0 188 0>, <0 189 0>, <0 190 0>;
>>>> + clocks = <&clock_disp PCLK_DECON_INT>,
>>>> + <&clock_disp ACLK_DECON_INT>,
>>>> + <&clock_disp SCLK_DECON_INT_ECLK>,
>>>> + <&clock_disp SCLK_DECON_INT_EXTCLKPLL>,
>>>> + <&clock_disp SCLK_DSD>,
>>>> + <&clock_bus0 ACLK_LH_DISP0>,
>>>> + <&clock_disp ACLK_CP_DISP>,
>>>> + <&clock_bus0 ACLK_LH_DISP1>;
>>>> + clock-names = "pclk_decon0", "aclk_decon0", "decon0_eclk",
>>>> + "decon0_vclk", "sclk_dsd", "aclk_lh_disp0",
>>>> + "aclk_disp", "aclk_lh_disp1";
>>>> + status = "disabled";
>>>> + };
>>>> +
>>>> +Board specific DT entry:
>>>> +
>>>> + decon at 13930000 {
>>>> + pinctrl-0 = <&lcd_clk &pwm1_out>;
>>>> + pinctrl-names = "default";
>>>> + status = "okay";
>>>> + };
>>>> diff --git a/drivers/gpu/drm/exynos/Kconfig
>>> b/drivers/gpu/drm/exynos/Kconfig
>>>> index fd1c070..89275ea 100644
>>>> --- a/drivers/gpu/drm/exynos/Kconfig
>>>> +++ b/drivers/gpu/drm/exynos/Kconfig
>>>> @@ -31,6 +31,13 @@ config DRM_EXYNOS_FIMD
>>>> help
>>>> Choose this option if you want to use Exynos FIMD for DRM.
>>>>
>>>> +config DRM_EXYNOS_DECON
>>>> + bool "Exynos DRM DECON"
>>>> + depends on DRM_EXYNOS
>>>> + select FB_MODE_HELPERS
>>>> + help
>>>> + Choose this option if you want to use Exynos DECON for DRM.
>>>> +
>>>> config DRM_EXYNOS_DPI
>>>> bool "EXYNOS DRM parallel output support"
>>>> depends on DRM_EXYNOS_FIMD
>>>> @@ -41,7 +48,7 @@ config DRM_EXYNOS_DPI
>>>>
>>>> config DRM_EXYNOS_DSI
>>>> bool "EXYNOS DRM MIPI-DSI driver support"
>>>> - depends on DRM_EXYNOS_FIMD
>>>> + depends on (DRM_EXYNOS_FIMD || DRM_EXYNOS_DECON)
>>>> select DRM_MIPI_DSI
>>>> select DRM_PANEL
>>>> default n
>>>> @@ -50,7 +57,7 @@ config DRM_EXYNOS_DSI
>>>>
>>>> config DRM_EXYNOS_DP
>>>> bool "EXYNOS DRM DP driver support"
>>>> - depends on DRM_EXYNOS_FIMD && ARCH_EXYNOS && (DRM_PTN3460=n ||
>>> DRM_PTN3460=y || DRM_PTN3460=DRM_EXYNOS)
>>>> + depends on (DRM_EXYNOS_FIMD || DRM_EXYNOS_DECON) && ARCH_EXYNOS &&
>>> (DRM_PTN3460=n || DRM_PTN3460=y || DRM_PTN3460=DRM_EXYNOS)
>>>> default DRM_EXYNOS
>>>> select DRM_PANEL
>>>> help
>>>> diff --git a/drivers/gpu/drm/exynos/Makefile
>>> b/drivers/gpu/drm/exynos/Makefile
>>>> index 33ae365..c3282ac 100644
>>>> --- a/drivers/gpu/drm/exynos/Makefile
>>>> +++ b/drivers/gpu/drm/exynos/Makefile
>>>> @@ -11,6 +11,7 @@ exynosdrm-y := exynos_drm_drv.o exynos_drm_encoder.o \
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_IOMMU) += exynos_drm_iommu.o
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_DMABUF) += exynos_drm_dmabuf.o
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o
>>>> +exynosdrm-$(CONFIG_DRM_EXYNOS_DECON) += exynos_drm_decon.o
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_DPI) += exynos_drm_dpi.o
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o
>>>> exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp_core.o exynos_dp_reg.o
>>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_decon.c
>>> b/drivers/gpu/drm/exynos/exynos_drm_decon.c
>>>> new file mode 100644
>>>> index 0000000..5ac4557
>>>> --- /dev/null
>>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_decon.c
>>>> @@ -0,0 +1,1086 @@
>>>> +/* exynos_drm_decon.c
>>>> + *
>>>> + * Copyright (C) 2014 Samsung Electronics Co.Ltd
>>>> + * Authors:
>>>> + * Akshu Agarwal <akshu.a at samsung.com>
>>>> + * Ajay Kumar <ajaykumar.rs at samsung.com>
>>>> + *
>>>> + * This program is free software; you can redistribute it and/or
>>> modify it
>>>> + * under the terms of the GNU General Public License as published
>>> by the
>>>> + * Free Software Foundation; either version 2 of the License, or
>>> (at your
>>>> + * option) any later version.
>>>> + *
>>>> + */
>>>> +#include <drm/drmP.h>
>>>> +#include <drm/exynos_drm.h>
>>>> +
>>>> +#include <linux/clk.h>
>>>> +#include <linux/component.h>
>>>> +#include <linux/kernel.h>
>>>> +#include <linux/of.h>
>>>> +#include <linux/of_device.h>
>>>> +#include <linux/platform_device.h>
>>>> +#include <linux/pm_runtime.h>
>>>> +
>>>> +#include <video/of_display_timing.h>
>>>> +#include <video/of_videomode.h>
>>>> +#include <video/samsung_decon.h>
>>>> +
>>>> +#include "exynos_drm_crtc.h"
>>>> +#include "exynos_drm_drv.h"
>>>> +#include "exynos_drm_fbdev.h"
>>>> +#include "exynos_drm_iommu.h"
>>>> +
>>>> +/*
>>>> + * DECON stands for Display and Enhancement controller, and
>>>> + * as a display controller, it transfers contents drawn on memory
>>>> + * to a LCD Panel through Display Interfaces such as RGB or
>>>> + * CPU Interface.
>>>> + */
>>>> +
>>>> +#define DECON_DEFAULT_FRAMERATE 60
>>>> +#define RESET_TIMEOUT 200
>>>> +#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
>>>> +
>>>> +#define WINDOWS_NR 2
>>>
>>> I know that DECON supports five overlays.
>> Exynos7 supports 7 overlays: 3 DMA channels and 4 local path.
>> Out of 3, one is secured DMA. so, we can in general use only 2 DMA layers.
>
> In case of Exynos7420, the DECON controller supports 1 dma channel and
> four local channels. Please check it again the SoC you use is Exynos7410
> or other.
You have referred DECON-EXT chapter. Kindly look into DECON-INT.
>>
>>>> +
>>>> +#define get_decon_manager(mgr)
>>> platform_get_drvdata(to_platform_device(dev))
>>>> +
>>>> +struct decon_win_data {
>>>> + unsigned int ovl_x;
>>>> + unsigned int ovl_y;
>>>> + unsigned int offset_x;
>>>> + unsigned int offset_y;
>>>> + unsigned int ovl_width;
>>>> + unsigned int ovl_height;
>>>> + unsigned int fb_width;
>>>> + unsigned int fb_height;
>>>> + unsigned int bpp;
>>>> + unsigned int pixel_format;
>>>> + dma_addr_t dma_addr;
>>>> + bool enabled;
>>>> + bool resume;
>>>> +};
>>>> +
>>>> +struct decon_context {
>>>> + struct device *dev;
>>>> + struct drm_device *drm_dev;
>>>> + struct clk *pclk;
>>>> + struct clk *aclk;
>>>> + struct clk *eclk;
>>>> + struct clk *vclk;
>>>> + struct clk *dsd;
>>>> + struct clk *lh_disp1;
>>>> + struct clk *aclk_disp;
>>>> + struct clk *lh_disp0;
>>>> + void __iomem *regs;
>>>> + struct drm_display_mode mode;
>>>> + struct decon_win_data win_data[WINDOWS_NR];
>>>> + unsigned int default_win;
>>>> + unsigned long irq_flags;
>>>> + u32 vidcon1;
>>>> + bool suspended;
>>>> + int pipe;
>>>> + wait_queue_head_t wait_vsync_queue;
>>>> + atomic_t wait_vsync_event;
>>>> +
>>>> + struct exynos_drm_panel_info panel;
>>>> +};
>>>> +
>>>> +static const struct of_device_id decon_driver_dt_match[] = {
>>>> + { .compatible = "samsung,exynos7-decon"},
>>>
>>> WARNING: DT compatible string "samsung,exynos7-decon" appears
>>> un-documented -- check ./Documentation/devicetree/bindings/
>>>
>>>> + {},
>>>> +};
>>>> +MODULE_DEVICE_TABLE(of, decon_driver_dt_match);
>>>> +
>>>> +static void decon_wait_for_vblank(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return;
>>>> +
>>>> + atomic_set(&ctx->wait_vsync_event, 1);
>>>> +
>>>> + /*
>>>> + * wait for decon to signal VSYNC interrupt or return after
>>>> + * timeout which is set to 50ms (refresh rate of 20).
>>>> + */
>>>> + if (!wait_event_timeout(ctx->wait_vsync_queue,
>>>> + !atomic_read(&ctx->wait_vsync_event),
>>>> + HZ/20))
>>>> + DRM_DEBUG_KMS("vblank wait timed out.\n");
>>>> +}
>>>> +
>>>> +static void decon_clear_channel(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + int win, ch_enabled = 0;
>>>> +
>>>> + DRM_DEBUG_KMS("%s\n", __FILE__);
>>>> +
>>>> + /* Check if any channel is enabled. */
>>>> + for (win = 0; win < WINDOWS_NR; win++) {
>>>> + u32 val = readl(ctx->regs + WINCON(win));
>>>> +
>>>> + if (val & WINCONx_ENWIN) {
>>>> + val &= ~WINCONx_ENWIN;
>>>> + writel(val, ctx->regs + WINCON(win));
>>>> + ch_enabled = 1;
>>>> + }
>>>> + }
>>>> +
>>>> + /* Wait for vsync, as disable channel takes effect at next vsync */
>>>> + if (ch_enabled) {
>>>> + unsigned int state = ctx->suspended;
>>>> +
>>>> + ctx->suspended = 0;
>>>> + decon_wait_for_vblank(mgr);
>>>> + ctx->suspended = state;
>>>> + }
>>>> +}
>>>> +
>>>> +static int decon_mgr_initialize(struct exynos_drm_manager *mgr,
>>>> + struct drm_device *drm_dev)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct exynos_drm_private *priv = drm_dev->dev_private;
>>>> +
>>>> + mgr->drm_dev = ctx->drm_dev = drm_dev;
>>>> + mgr->pipe = ctx->pipe = priv->pipe++;
>>>> +
>>>> + /* attach this sub driver to iommu mapping if supported. */
>>>> + if (is_drm_iommu_supported(ctx->drm_dev)) {
>>>> + /*
>>>> + * If any channel is already active, iommu will throw
>>>> + * a PAGE FAULT when enabled. So clear any channel if enabled.
>>>> + */
>>>> + decon_clear_channel(mgr);
>>>> + drm_iommu_attach_device(ctx->drm_dev, ctx->dev);
>>>> + }
>>>> +
>>>> + return 0;
>>>> +}
>>>> +
>>>> +static void decon_mgr_remove(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> +
>>>> + /* detach this sub driver from iommu mapping if supported. */
>>>> + if (is_drm_iommu_supported(ctx->drm_dev))
>>>> + drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
>>>> +}
>>>> +
>>>> +static u32 decon_calc_clkdiv(struct decon_context *ctx,
>>>> + const struct drm_display_mode *mode)
>>>> +{
>>>> + unsigned long ideal_clk = mode->htotal * mode->vtotal * mode->vrefresh;
>>>> + u32 clkdiv;
>>>> +
>>>> + /* Find the clock divider value that gets us closest to ideal_clk */
>>>> + clkdiv = DIV_ROUND_UP(clk_get_rate(ctx->vclk), ideal_clk);
>>>> +
>>>> + return (clkdiv < 0x100) ? clkdiv : 0xff;
>>>> +}
>>>> +
>>>> +static bool decon_mode_fixup(struct exynos_drm_manager *mgr,
>>>> + const struct drm_display_mode *mode,
>>>> + struct drm_display_mode *adjusted_mode)
>>>> +{
>>>> + if (adjusted_mode->vrefresh == 0)
>>>> + adjusted_mode->vrefresh = DECON_DEFAULT_FRAMERATE;
>>>> +
>>>> + return true;
>>>> +}
>>>> +
>>>> +static void decon_mode_set(struct exynos_drm_manager *mgr,
>>>> + const struct drm_display_mode *in_mode)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> +
>>>> + drm_mode_copy(&ctx->mode, in_mode);
>>>> +}
>>>> +
>>>> +static void decon_commit(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct drm_display_mode *mode = &ctx->mode;
>>>> + u32 val, clkdiv;
>>>> + int vsync_len, vbpd, vfpd, hsync_len, hbpd, hfpd;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return;
>>>> +
>>>> + /* nothing to do if we haven't set the mode yet */
>>>> + if (mode->htotal == 0 || mode->vtotal == 0)
>>>> + return;
>>>> +
>>>> + /* setup vertical timing values. */
>>>> + vsync_len = mode->crtc_vsync_end - mode->crtc_vsync_start;
>>>> + vbpd = mode->crtc_vtotal - mode->crtc_vsync_end;
>>>> + vfpd = mode->crtc_vsync_start - mode->crtc_vdisplay;
>>>> +
>>>> + val = VIDTCON0_VBPD(vbpd - 1) | VIDTCON0_VFPD(vfpd - 1);
>>>> + writel(val, ctx->regs + VIDTCON0);
>>>
>>> Check VIDTCON0~3 registers. These registers of Exynos5433 and Exynos5430
>>> have different offsets so you would need to consider the differences.
>> Do I need to add support fofr Exynos5433 DECON also?
>> I am not sure if I have a test setup!
>>
>
> I think it would be enough that you consider other SoCs because they
> could not be worked correctly with this driver. So you should consider
> them somehow - DECON driver should cover all DECON controllers for
> Exynos543x and Exynos74xx.
You said there should be no separate DECON driver and the changes should be
handled in FIMD driver itself. If that's the case, I can just add
"samsung,exynos7-fimd"
and someone will add "samsung, exynos5433-fimd" later when needed.
Ajay
>>>> +
>>>> + val = VIDTCON1_VSPW(vsync_len - 1);
>>>> + writel(val, ctx->regs + VIDTCON1);
>>>
>>> Ditto
>>>
>>>> +
>>>> + /* setup horizontal timing values. */
>>>> + hsync_len = mode->crtc_hsync_end - mode->crtc_hsync_start;
>>>> + hbpd = mode->crtc_htotal - mode->crtc_hsync_end;
>>>> + hfpd = mode->crtc_hsync_start - mode->crtc_hdisplay;
>>>> +
>>>> + /* setup horizontal timing values. */
>>>> + val = VIDTCON2_HBPD(hbpd - 1) | VIDTCON2_HFPD(hfpd - 1);
>>>> + writel(val, ctx->regs + VIDTCON2);
>>>
>>> Ditto
>>>
>>>> +
>>>> + val = VIDTCON3_HSPW(hsync_len - 1);
>>>> + writel(val, ctx->regs + VIDTCON3);
>>>
>>> Ditto
>>>
>>>> +
>>>> + /* setup horizontal and vertical display size. */
>>>> + val = VIDTCON4_LINEVAL(mode->vdisplay - 1) |
>>>> + VIDTCON4_HOZVAL(mode->hdisplay - 1);
>>>> + writel(val, ctx->regs + VIDTCON4);
>>>> +
>>>> + writel(mode->vdisplay - 1, ctx->regs + LINECNT_OP_THRESHOLD);
>>>> +
>>>> + /*
>>>> + * fields of register with prefix '_F' would be updated
>>>> + * at vsync(same as dma start)
>>>> + */
>>>> + val = VIDCON0_ENVID | VIDCON0_ENVID_F;
>>>> + writel(val, ctx->regs + VIDCON0);
>>>> +
>>>> + clkdiv = decon_calc_clkdiv(ctx, mode);
>>>> + if (clkdiv > 1) {
>>>> + val = VCLKCON1_CLKVAL_NUM_VCLK(clkdiv - 1);
>>>> + writel(val, ctx->regs + VCLKCON1);
>>>> + writel(val, ctx->regs + VCLKCON2);
>>>> + }
>>>> +
>>>> + val = readl(ctx->regs + DECON_UPDATE);
>>>> + val |= DECON_UPDATE_STANDALONE_F;
>>>> + writel(val, ctx->regs + DECON_UPDATE);
>>>> +}
>>>> +
>>>> +static int decon_enable_vblank(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + u32 val;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return -EPERM;
>>>> +
>>>> + if (!test_and_set_bit(0, &ctx->irq_flags)) {
>>>> + val = readl(ctx->regs + VIDINTCON0);
>>>> +
>>>> + val |= VIDINTCON0_INT_ENABLE;
>>>> + val |= VIDINTCON0_INT_FRAME;
>>>> +
>>>> + val &= ~VIDINTCON0_FRAMESEL0_MASK;
>>>> + val |= VIDINTCON0_FRAMESEL0_VSYNC;
>>>> +
>>>> + writel(val, ctx->regs + VIDINTCON0);
>>>> + }
>>>> +
>>>> + return 0;
>>>> +}
>>>> +
>>>> +static void decon_disable_vblank(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + u32 val;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return;
>>>> +
>>>> + if (test_and_clear_bit(0, &ctx->irq_flags)) {
>>>> + val = readl(ctx->regs + VIDINTCON0);
>>>> +
>>>> + val &= ~VIDINTCON0_INT_FRAME;
>>>> + val &= ~VIDINTCON0_INT_ENABLE;
>>>> +
>>>> + writel(val, ctx->regs + VIDINTCON0);
>>>> + }
>>>> +}
>>>> +
>>>> +static void decon_win_mode_set(struct exynos_drm_manager *mgr,
>>>> + struct exynos_drm_overlay *overlay)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int win, padding;
>>>> +
>>>> + if (!overlay) {
>>>> + DRM_ERROR("overlay is NULL\n");
>>>> + return;
>>>> + }
>>>> +
>>>> + win = overlay->zpos;
>>>> + if (win == DEFAULT_ZPOS)
>>>> + win = ctx->default_win;
>>>> +
>>>> + if (win < 0 || win >= WINDOWS_NR)
>>>> + return;
>>>> +
>>>> +
>>>> + win_data = &ctx->win_data[win];
>>>> +
>>>> + padding = (overlay->pitch / (overlay->bpp >> 3)) - overlay->fb_width;
>>>> + win_data->offset_x = overlay->fb_x;
>>>> + win_data->offset_y = overlay->fb_y;
>>>> + win_data->fb_width = overlay->fb_width + padding;
>>>> + win_data->fb_height = overlay->fb_height;
>>>> + win_data->ovl_x = overlay->crtc_x;
>>>> + win_data->ovl_y = overlay->crtc_y;
>>>> + win_data->ovl_width = overlay->crtc_width;
>>>> + win_data->ovl_height = overlay->crtc_height;
>>>> + win_data->dma_addr = overlay->dma_addr[0];
>>>> + win_data->bpp = overlay->bpp;
>>>> + win_data->pixel_format = overlay->pixel_format;
>>>> +
>>>> + DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n",
>>>> + win_data->offset_x, win_data->offset_y);
>>>> + DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
>>>> + win_data->ovl_width, win_data->ovl_height);
>>>> + DRM_DEBUG_KMS("paddr = 0x%lx\n", (unsigned long)win_data->dma_addr);
>>>> + DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n",
>>>> + overlay->fb_width, overlay->crtc_width);
>>>> +}
>>>> +
>>>> +static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned
>>> int win)
>>>> +{
>>>> + struct decon_win_data *win_data = &ctx->win_data[win];
>>>> + unsigned long val;
>>>> +
>>>> + val = readl(ctx->regs + WINCON(win));
>>>> + val &= ~WINCONx_BPPMODE_MASK;
>>>> +
>>>> + switch (win_data->pixel_format) {
>>>> + case DRM_FORMAT_RGB565:
>>>> + val |= WINCONx_BPPMODE_16BPP_565;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_XRGB8888:
>>>> + val |= WINCONx_BPPMODE_24BPP_xRGB;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_XBGR8888:
>>>> + val |= WINCONx_BPPMODE_24BPP_xBGR;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_RGBX8888:
>>>> + val |= WINCONx_BPPMODE_24BPP_RGBx;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_BGRX8888:
>>>> + val |= WINCONx_BPPMODE_24BPP_BGRx;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_ARGB8888:
>>>> + val |= WINCONx_BPPMODE_32BPP_ARGB | WINCONx_BLD_PIX |
>>>> + WINCONx_ALPHA_SEL;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_ABGR8888:
>>>> + val |= WINCONx_BPPMODE_32BPP_ABGR | WINCONx_BLD_PIX |
>>>> + WINCONx_ALPHA_SEL;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_RGBA8888:
>>>> + val |= WINCONx_BPPMODE_32BPP_RGBA | WINCONx_BLD_PIX |
>>>> + WINCONx_ALPHA_SEL;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + case DRM_FORMAT_BGRA8888:
>>>> + val |= WINCONx_BPPMODE_32BPP_BGRA | WINCONx_BLD_PIX |
>>>> + WINCONx_ALPHA_SEL;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + default:
>>>> + DRM_DEBUG_KMS("invalid pixel size so using unpacked 24bpp.\n");
>>>> +
>>>> + val |= WINCONx_BPPMODE_24BPP_xRGB;
>>>> + val |= WINCONx_BURSTLEN_16WORD;
>>>> + break;
>>>> + }
>>>> +
>>>> + DRM_DEBUG_KMS("bpp = %d\n", win_data->bpp);
>>>> +
>>>> + /*
>>>> + * In case of exynos, setting dma-burst to 16Word causes permanent
>>>> + * tearing for very small buffers, e.g. cursor buffer. Burst Mode
>>>> + * switching which is based on overlay size is not recommended as
>>>> + * overlay size varies alot towards the end of the screen and rapid
>>>
>>> WARNING: 'alot' may be misspelled - perhaps 'a lot'?
>>>
>>>> + * movement causes unstable DMA which results into iommu crash/tear.
>>>> + */
>>>> +
>>>> + if (win_data->fb_width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
>>>> + val &= ~WINCONx_BURSTLEN_MASK;
>>>> + val |= WINCONx_BURSTLEN_8WORD;
>>>> + }
>>>> +
>>>> + writel(val, ctx->regs + WINCON(win));
>>>> +}
>>>> +
>>>> +static void decon_win_set_colkey(struct decon_context *ctx, unsigned
>>> int win)
>>>> +{
>>>> + unsigned int keycon0 = 0, keycon1 = 0;
>>>> +
>>>> + keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F |
>>>> + WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
>>>> +
>>>> + keycon1 = WxKEYCON1_COLVAL(0xffffffff);
>>>> +
>>>> + writel(keycon0, ctx->regs + WKEYCON0_BASE(win));
>>>> + writel(keycon1, ctx->regs + WKEYCON1_BASE(win));
>>>> +}
>>>> +
>>>> +/**
>>>> + * shadow_protect_win() - disable updating values from shadow
>>> registers at vsync
>>>> + *
>>>> + * @win: window to protect registers for
>>>> + * @protect: 1 to protect (disable updates)
>>>> + */
>>>> +static void decon_shadow_protect_win(struct decon_context *ctx,
>>>> + int win, bool protect)
>>>> +{
>>>> + u32 reg, bits, val;
>>>> +
>>>> + reg = SHADOWCON;
>>>> + bits = SHADOWCON_WINx_PROTECT(win);
>>>> +
>>>> + val = readl(ctx->regs + reg);
>>>> + if (protect)
>>>> + val |= bits;
>>>> + else
>>>> + val &= ~bits;
>>>> + writel(val, ctx->regs + reg);
>>>> +}
>>>> +
>>>> +static void decon_win_commit(struct exynos_drm_manager *mgr, int zpos)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int win = zpos;
>>>> + unsigned long val, alpha, blendeq;
>>>> + unsigned int last_x;
>>>> + unsigned int last_y;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return;
>>>> +
>>>> + if (win == DEFAULT_ZPOS)
>>>> + win = ctx->default_win;
>>>> +
>>>> + if (win < 0 || win >= WINDOWS_NR)
>>>> + return;
>>>> +
>>>> + win_data = &ctx->win_data[win];
>>>> +
>>>> + /* If suspended, enable this on resume */
>>>> + if (ctx->suspended) {
>>>> + win_data->resume = true;
>>>> + return;
>>>> + }
>>>> +
>>>> + /*
>>>> + * SHADOWCON/PRTCON register is used for enabling timing.
>>>> + *
>>>> + * for example, once only width value of a register is set,
>>>> + * if the dma is started then decon hardware could malfunction so
>>>> + * with protect window setting, the register fields with prefix '_F'
>>>> + * wouldn't be updated at vsync also but updated once unprotect window
>>>> + * is set.
>>>> + */
>>>> +
>>>> + /* protect windows */
>>>> + decon_shadow_protect_win(ctx, win, true);
>>>> +
>>>> + /* buffer start address */
>>>> + val = (unsigned long)win_data->dma_addr;
>>>> + writel(val, ctx->regs + VIDW_BUF_START(win));
>>>> +
>>>> + /* buffer size */
>>>> + writel(win_data->fb_width, ctx->regs + VIDW_WHOLE_X(win));
>>>> + writel(win_data->fb_height, ctx->regs + VIDW_WHOLE_Y(win));
>>>> +
>>>> + /* offset from the start of the buffer read */
>>>> + writel(win_data->offset_x, ctx->regs + VIDW_OFFSET_X(win));
>>>> + writel(win_data->offset_y, ctx->regs + VIDW_OFFSET_Y(win));
>>>> +
>>>> + DRM_DEBUG_KMS("start addr = 0x%lx\n",
>>>> + (unsigned long)win_data->dma_addr);
>>>> + DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
>>>> + win_data->ovl_width, win_data->ovl_height);
>>>> +
>>>> + /* OSD position */
>>>> + val = VIDOSDxA_TOPLEFT_X(win_data->ovl_x) |
>>>> + VIDOSDxA_TOPLEFT_Y(win_data->ovl_y);
>>>> + writel(val, ctx->regs + VIDOSD_A(win));
>>>> +
>>>> + last_x = win_data->ovl_x + win_data->ovl_width;
>>>> + if (last_x)
>>>> + last_x--;
>>>> + last_y = win_data->ovl_y + win_data->ovl_height;
>>>> + if (last_y)
>>>> + last_y--;
>>>> +
>>>> + val = VIDOSDxB_BOTRIGHT_X(last_x) | VIDOSDxB_BOTRIGHT_Y(last_y);
>>>> +
>>>> + writel(val, ctx->regs + VIDOSD_B(win));
>>>> +
>>>> + DRM_DEBUG_KMS("osd pos: tx = %d, ty = %d, bx = %d, by = %d\n",
>>>> + win_data->ovl_x, win_data->ovl_y, last_x, last_y);
>>>> +
>>>> + /* OSD alpha */
>>>> + alpha = VIDOSDxC_ALPHA0_R_F(0x0) |
>>>> + VIDOSDxC_ALPHA0_G_F(0x0) |
>>>> + VIDOSDxC_ALPHA0_B_F(0x0);
>>>> +
>>>> + writel(alpha, ctx->regs + VIDOSD_C(win));
>>>> +
>>>> + alpha = VIDOSDxD_ALPHA1_R_F(0xff) |
>>>> + VIDOSDxD_ALPHA1_G_F(0xff) |
>>>> + VIDOSDxD_ALPHA1_B_F(0xff);
>>>> +
>>>> + writel(alpha, ctx->regs + VIDOSD_D(win));
>>>> +
>>>> + if (win != 0) {
>>>> + blendeq = BLENDE_A_FUNC(BLENDE_COEF_ONE) |
>>>> + BLENDE_B_FUNC(BLENDE_COEF_ZERO) |
>>>> + BLENDE_P_FUNC(BLENDE_COEF_ZERO) |
>>>> + BLENDE_Q_FUNC(BLENDE_COEF_ZERO);
>>>> +
>>>> + writel(blendeq, ctx->regs + BLENDE(win - 1));
>>>> + }
>>>> +
>>>> + decon_win_set_pixfmt(ctx, win);
>>>> +
>>>> + /* hardware window 0 doesn't support color key. */
>>>> + if (win != 0)
>>>> + decon_win_set_colkey(ctx, win);
>>>> +
>>>> + /* wincon */
>>>> + val = readl(ctx->regs + WINCON(win));
>>>> + val |= WINCONx_TRIPLE_BUF_MODE;
>>>> + val |= WINCONx_ENWIN;
>>>> + writel(val, ctx->regs + WINCON(win));
>>>> +
>>>> + /* Enable DMA channel and unprotect windows */
>>>> + decon_shadow_protect_win(ctx, win, false);
>>>> +
>>>> + val = readl(ctx->regs + DECON_UPDATE);
>>>> + val |= DECON_UPDATE_STANDALONE_F;
>>>> + writel(val, ctx->regs + DECON_UPDATE);
>>>> +
>>>> + win_data->enabled = true;
>>>> +}
>>>> +
>>>> +static void decon_win_disable(struct exynos_drm_manager *mgr, int zpos)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int win = zpos;
>>>> + u32 val;
>>>> +
>>>> + if (win == DEFAULT_ZPOS)
>>>> + win = ctx->default_win;
>>>> +
>>>> + if (win < 0 || win >= WINDOWS_NR)
>>>> + return;
>>>> +
>>>> + win_data = &ctx->win_data[win];
>>>> +
>>>> + if (ctx->suspended) {
>>>> + /* do not resume this window*/
>>>> + win_data->resume = false;
>>>> + return;
>>>> + }
>>>> +
>>>> + /* protect windows */
>>>> + decon_shadow_protect_win(ctx, win, true);
>>>> +
>>>> + /* wincon */
>>>> + val = readl(ctx->regs + WINCON(win));
>>>> + val &= ~WINCONx_ENWIN;
>>>> + writel(val, ctx->regs + WINCON(win));
>>>> +
>>>> + decon_shadow_protect_win(ctx, win, false);
>>>> +
>>>> + win_data->enabled = false;
>>>> +}
>>>> +
>>>> +static void decon_window_suspend(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int i;
>>>> +
>>>> + for (i = 0; i < WINDOWS_NR; i++) {
>>>> + win_data = &ctx->win_data[i];
>>>> + win_data->resume = win_data->enabled;
>>>> + if (win_data->enabled)
>>>> + decon_win_disable(mgr, i);
>>>> + }
>>>> + decon_wait_for_vblank(mgr);
>>>> +}
>>>> +
>>>> +static void decon_window_resume(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int i;
>>>> +
>>>> + for (i = 0; i < WINDOWS_NR; i++) {
>>>> + win_data = &ctx->win_data[i];
>>>> + win_data->enabled = win_data->resume;
>>>> + win_data->resume = false;
>>>> + }
>>>> +}
>>>> +
>>>> +static void decon_apply(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + struct decon_win_data *win_data;
>>>> + int i;
>>>> +
>>>> + for (i = 0; i < WINDOWS_NR; i++) {
>>>> + win_data = &ctx->win_data[i];
>>>> + if (win_data->enabled)
>>>> + decon_win_commit(mgr, i);
>>>> + else
>>>> + decon_win_disable(mgr, i);
>>>> + }
>>>> +
>>>> + decon_commit(mgr);
>>>> +}
>>>> +
>>>> +static int decon_reg_reset(struct decon_context *ctx)
>>>> +{
>>>> + int tries = RESET_TIMEOUT;
>>>> +
>>>> + writel(VIDCON0_SWRESET, ctx->regs + VIDCON0);
>>>> +
>>>> + while (tries) {
>>>> + if (!(readl(ctx->regs + VIDCON0) & VIDCON0_SWRESET))
>>>> + break;
>>>> + udelay(10);
>>>> + tries--;
>>>> + }
>>>> +
>>>> + if (!tries) {
>>>> + DRM_ERROR("Failed to reset decon\n");
>>>> + return -EBUSY;
>>>> + }
>>>> +
>>>> + return 0;
>>>> +}
>>>> +
>>>> +static void decon_cmu_enable(struct decon_context *ctx)
>>>> +{
>>>> + writel(~DECON_CMU_ALL_CLKGATE_ENABLE, ctx->regs + DECON_CMU);
>>>> +}
>>>> +
>>>> +static void decon_blend_alpha_bits(struct decon_context *ctx)
>>>> +{
>>>> + writel(BLENDCON_NEW_8BIT_ALPHA_VALUE, ctx->regs + BLENDCON);
>>>> +}
>>>> +
>>>> +static void decon_set_vidout(struct decon_context *ctx)
>>>> +{
>>>> + writel(VIDOUTCON0_LCD_ON | VIDOUTCON0_RGBIF, ctx->regs + VIDOUTCON0);
>>>> +}
>>>> +
>>>> +static void decon_set_crc(struct decon_context *ctx)
>>>> +{
>>>> + u32 val = readl(ctx->regs + CRCCTRL);
>>>> +
>>>> + writel(val & ~(CRCCTRL_CRCCLKEN | CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F),
>>>> + ctx->regs + CRCCTRL);
>>>> +}
>>>> +
>>>> +static void decon_set_clkval(struct decon_context *ctx)
>>>> +{
>>>> + writel(VCLKCON0_CLKVALUP | VCLKCON0_VCLKFREE, ctx->regs + VCLKCON0);
>>>> +}
>>>> +
>>>> +static void decon_set_fixvclk(struct decon_context *ctx)
>>>> +{
>>>> + writel(ctx->vidcon1, ctx->regs + VIDCON1(0));
>>>> +}
>>>> +
>>>> +static int decon_poweron(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> + int ret;
>>>> +
>>>> + if (!ctx->suspended)
>>>> + return 0;
>>>> +
>>>> + ctx->suspended = false;
>>>> +
>>>> + pm_runtime_get_sync(ctx->dev);
>>>> +
>>>> + ret = clk_prepare_enable(ctx->pclk);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the pclk [%d]\n", ret);
>>>> + goto pclk_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->aclk);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the aclk [%d]\n", ret);
>>>> + goto aclk_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->eclk);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the eclk [%d]\n", ret);
>>>> + goto eclk_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->vclk);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the vclk [%d]\n", ret);
>>>> + goto vclk_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->dsd);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the dsd [%d]\n", ret);
>>>> + goto dsd_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->lh_disp1);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the lh_disp1 [%d]\n", ret);
>>>> + goto lh_disp1_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->aclk_disp);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the aclk_disp [%d]\n", ret);
>>>> + goto aclk_disp_err;
>>>> + }
>>>> +
>>>> + ret = clk_prepare_enable(ctx->lh_disp0);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to prepare_enable the lh_disp0 [%d]\n", ret);
>>>> + goto lh_disp0_err;
>>>> + }
>>>> +
>>>> + ret = decon_reg_reset(mgr->ctx);
>>>> + if (ret < 0) {
>>>> + DRM_ERROR("Failed to reset decon [%d]\n", ret);
>>>> + goto lh_disp0_err;
>>>> + }
>>>> +
>>>> + decon_cmu_enable(mgr->ctx);
>>>> + decon_blend_alpha_bits(mgr->ctx);
>>>> + decon_set_vidout(mgr->ctx);
>>>> + decon_set_crc(mgr->ctx);
>>>> + decon_set_fixvclk(mgr->ctx);
>>>> + decon_set_clkval(mgr->ctx);
>>>> +
>>>> + /* if vblank was enabled status, enable it again. */
>>>> + if (test_and_clear_bit(0, &ctx->irq_flags)) {
>>>> + ret = decon_enable_vblank(mgr);
>>>> + if (ret) {
>>>> + DRM_ERROR("Failed to re-enable vblank [%d]\n", ret);
>>>> + goto enable_vblank_err;
>>>> + }
>>>> + }
>>>> +
>>>> + decon_window_resume(mgr);
>>>> +
>>>> + decon_apply(mgr);
>>>> +
>>>> + return 0;
>>>> +
>>>> +enable_vblank_err:
>>>> + clk_disable_unprepare(ctx->lh_disp0);
>>>> +lh_disp0_err:
>>>> + clk_disable_unprepare(ctx->aclk_disp);
>>>> +aclk_disp_err:
>>>> + clk_disable_unprepare(ctx->lh_disp1);
>>>> +lh_disp1_err:
>>>> + clk_disable_unprepare(ctx->dsd);
>>>> +dsd_err:
>>>> + clk_disable_unprepare(ctx->vclk);
>>>> +vclk_err:
>>>> + clk_disable_unprepare(ctx->eclk);
>>>> +eclk_err:
>>>> + clk_disable_unprepare(ctx->aclk);
>>>> +aclk_err:
>>>> + clk_disable_unprepare(ctx->pclk);
>>>> +pclk_err:
>>>> + ctx->suspended = true;
>>>> + return ret;
>>>> +}
>>>> +
>>>> +static int decon_poweroff(struct exynos_drm_manager *mgr)
>>>> +{
>>>> + struct decon_context *ctx = mgr->ctx;
>>>> +
>>>> + if (ctx->suspended)
>>>> + return 0;
>>>> +
>>>> + /*
>>>> + * We need to make sure that all windows are disabled before we
>>>> + * suspend that connector. Otherwise we might try to scan from
>>>> + * a destroyed buffer later.
>>>> + */
>>>> + decon_window_suspend(mgr);
>>>> +
>>>> + clk_disable_unprepare(ctx->pclk);
>>>> + clk_disable_unprepare(ctx->aclk);
>>>> + clk_disable_unprepare(ctx->eclk);
>>>> + clk_disable_unprepare(ctx->vclk);
>>>> + clk_disable_unprepare(ctx->dsd);
>>>> + clk_disable_unprepare(ctx->lh_disp1);
>>>> + clk_disable_unprepare(ctx->aclk_disp);
>>>> + clk_disable_unprepare(ctx->lh_disp0);
>>>> +
>>>> + pm_runtime_put_sync(ctx->dev);
>>>> +
>>>> + ctx->suspended = true;
>>>> + return 0;
>>>> +}
>>>> +
>>>> +static void decon_dpms(struct exynos_drm_manager *mgr, int mode)
>>>> +{
>>>> + DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
>>>> +
>>>> + switch (mode) {
>>>> + case DRM_MODE_DPMS_ON:
>>>> + decon_poweron(mgr);
>>>> + break;
>>>> + case DRM_MODE_DPMS_STANDBY:
>>>> + case DRM_MODE_DPMS_SUSPEND:
>>>> + case DRM_MODE_DPMS_OFF:
>>>> + decon_poweroff(mgr);
>>>> + break;
>>>> + default:
>>>> + DRM_DEBUG_KMS("unspecified mode %d\n", mode);
>>>> + break;
>>>> + }
>>>> +}
>>>> +
>>>> +static struct exynos_drm_manager_ops decon_manager_ops = {
>>>> + .dpms = decon_dpms,
>>>> + .mode_fixup = decon_mode_fixup,
>>>> + .mode_set = decon_mode_set,
>>>> + .commit = decon_commit,
>>>> + .enable_vblank = decon_enable_vblank,
>>>> + .disable_vblank = decon_disable_vblank,
>>>> + .wait_for_vblank = decon_wait_for_vblank,
>>>> + .win_mode_set = decon_win_mode_set,
>>>> + .win_commit = decon_win_commit,
>>>> + .win_disable = decon_win_disable,
>>>> +};
>>>> +
>>>> +static struct exynos_drm_manager decon_manager = {
>>>> + .type = EXYNOS_DISPLAY_TYPE_LCD,
>>>> + .ops = &decon_manager_ops,
>>>> +};
>>>> +
>>>> +static irqreturn_t decon_irq_handler(int irq, void *dev_id)
>>>> +{
>>>> + struct decon_context *ctx = (struct decon_context *)dev_id;
>>>> + u32 val;
>>>> +
>>>> + val = readl(ctx->regs + VIDINTCON1);
>>>> +
>>>> + if (val & VIDINTCON1_INT_FRAME)
>>>> + /* VSYNC interrupt */
>>>> + writel(VIDINTCON1_INT_FRAME, ctx->regs + VIDINTCON1);
>>>> +
>>>> + /* check the crtc is detached already from encoder */
>>>> + if (ctx->pipe < 0 || !ctx->drm_dev)
>>>> + goto out;
>>>> +
>>>> + drm_handle_vblank(ctx->drm_dev, ctx->pipe);
>>>> + exynos_drm_crtc_finish_pageflip(ctx->drm_dev, ctx->pipe);
>>>> +
>>>> + /* set wait vsync event to zero and wake up queue. */
>>>> + if (atomic_read(&ctx->wait_vsync_event)) {
>>>> + atomic_set(&ctx->wait_vsync_event, 0);
>>>> + wake_up(&ctx->wait_vsync_queue);
>>>> + }
>>>> +out:
>>>> + return IRQ_HANDLED;
>>>> +}
>>>> +
>>>> +static int decon_bind(struct device *dev, struct device *master, void
>>> *data)
>>>> +{
>>>> + struct drm_device *drm_dev = data;
>>>> +
>>>> + decon_mgr_initialize(&decon_manager, drm_dev);
>>>> + exynos_drm_crtc_create(&decon_manager);
>>>> +
>>>> + return 0;
>>>> +
>>>> +}
>>>> +
>>>> +static void decon_unbind(struct device *dev, struct device *master,
>>>> + void *data)
>>>> +{
>>>> + struct exynos_drm_manager *mgr = dev_get_drvdata(dev);
>>>> +
>>>> + decon_dpms(mgr, DRM_MODE_DPMS_OFF);
>>>> + decon_mgr_remove(mgr);
>>>> +}
>>>> +
>>>> +static const struct component_ops decon_component_ops = {
>>>> + .bind = decon_bind,
>>>> + .unbind = decon_unbind,
>>>> +};
>>>> +
>>>> +static int decon_probe(struct platform_device *pdev)
>>>> +{
>>>> + struct device *dev = &pdev->dev;
>>>> + struct decon_context *ctx;
>>>> + struct resource *res;
>>>> + int ret = -EINVAL;
>>>> +
>>>> + ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC,
>>>> + decon_manager.type);
>>>> + if (ret)
>>>> + return ret;
>>>> +
>>>> + if (!dev->of_node) {
>>>> + ret = -ENODEV;
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
>>>> + if (!ctx) {
>>>> + ret = -ENOMEM;
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->dev = dev;
>>>> + ctx->suspended = true;
>>>> +
>>>
>>> You would also need to consider to configure DSD_CFG_MUX register using
>>> mfd/syscon interfaces.
>> I have not configured it till now for Exynos7, but for me display works fine!
>>
>>>> + ctx->pclk = devm_clk_get(dev, "pclk_decon0");
>>>> + if (IS_ERR(ctx->pclk)) {
>>>> + dev_err(dev, "failed to get bus clock\n");
>>>> + ret = PTR_ERR(ctx->pclk);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->aclk = devm_clk_get(dev, "aclk_decon0");
>>>> + if (IS_ERR(ctx->aclk)) {
>>>> + dev_err(dev, "failed to get aclock\n");
>>>> + ret = PTR_ERR(ctx->aclk);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->eclk = devm_clk_get(dev, "decon0_eclk");
>>>> + if (IS_ERR(ctx->eclk)) {
>>>> + dev_err(dev, "failed to get eclock\n");
>>>> + ret = PTR_ERR(ctx->eclk);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->vclk = devm_clk_get(dev, "decon0_vclk");
>>>> + if (IS_ERR(ctx->vclk)) {
>>>> + dev_err(dev, "failed to get vclock\n");
>>>> + ret = PTR_ERR(ctx->vclk);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->dsd = devm_clk_get(dev, "sclk_dsd");
>>>> + if (IS_ERR(ctx->dsd)) {
>>>> + dev_err(dev, "failed to get dsd clock\n");
>>>> + ret = PTR_ERR(ctx->dsd);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->lh_disp1 = devm_clk_get(dev, "aclk_lh_disp1");
>>>> + if (IS_ERR(ctx->lh_disp1)) {
>>>> + dev_err(dev, "failed to get lh_disp1 clock\n");
>>>> + ret = PTR_ERR(ctx->lh_disp1);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->aclk_disp = devm_clk_get(dev, "aclk_disp");
>>>> + if (IS_ERR(ctx->aclk_disp)) {
>>>> + dev_err(dev, "failed to get aclk_disp clock\n");
>>>> + ret = PTR_ERR(ctx->aclk_disp);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ctx->lh_disp0 = devm_clk_get(dev, "aclk_lh_disp0");
>>>> + if (IS_ERR(ctx->lh_disp0)) {
>>>> + dev_err(dev, "failed to get lh_disp0 clock\n");
>>>> + ret = PTR_ERR(ctx->lh_disp0);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>>>> +
>>>> + ctx->regs = devm_ioremap_resource(dev, res);
>>>> + if (IS_ERR(ctx->regs)) {
>>>> + ret = PTR_ERR(ctx->regs);
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "vsync");
>>>> + if (!res) {
>>>> + dev_err(dev, "irq request failed.\n");
>>>> + ret = -ENXIO;
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + ret = devm_request_irq(dev, res->start, decon_irq_handler,
>>>> + 0, "drm_decon", ctx);
>>>> + if (ret) {
>>>> + dev_err(dev, "irq request failed.\n");
>>>> + goto err_del_component;
>>>> + }
>>>> +
>>>> + init_waitqueue_head(&ctx->wait_vsync_queue);
>>>> + atomic_set(&ctx->wait_vsync_event, 0);
>>>> +
>>>> + platform_set_drvdata(pdev, &decon_manager);
>>>> +
>>>> + decon_manager.ctx = ctx;
>>>> +
>>>> + pm_runtime_enable(&pdev->dev);
>>>> +
>>>> + ret = component_add(&pdev->dev, &decon_component_ops);
>>>> + if (ret)
>>>> + goto err_disable_pm_runtime;
>>>> +
>>>> + return ret;
>>>> +
>>>> +err_disable_pm_runtime:
>>>> + pm_runtime_disable(&pdev->dev);
>>>> +
>>>> +err_del_component:
>>>> + exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
>>>> + return ret;
>>>> +}
>>>> +
>>>> +static int decon_remove(struct platform_device *pdev)
>>>> +{
>>>> + pm_runtime_disable(&pdev->dev);
>>>> +
>>>> + component_del(&pdev->dev, &decon_component_ops);
>>>> + exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
>>>> +
>>>> + return 0;
>>>> +}
>>>> +
>>>> +struct platform_driver decon_driver = {
>>>> + .probe = decon_probe,
>>>> + .remove = decon_remove,
>>>> + .driver = {
>>>> + .name = "exynos-decon",
>>>> + .owner = THIS_MODULE,
>>>> + .of_match_table = decon_driver_dt_match,
>>>> + },
>>>> +};
>>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c
>>> b/drivers/gpu/drm/exynos/exynos_drm_drv.c
>>>> index 443a206..44bdc42 100644
>>>> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
>>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
>>>> @@ -557,10 +557,16 @@ static int exynos_drm_platform_probe(struct
>>> platform_device *pdev)
>>>> return ret;
>>>> #endif
>>>>
>>>> +#ifdef CONFIG_DRM_EXYNOS_DECON
>>>> + ret = platform_driver_register(&decon_driver);
>>>> + if (ret < 0)
>>>> + goto err_unregister_fimd_drv;
>>>> +#endif
>>>> +
>>>> #ifdef CONFIG_DRM_EXYNOS_DP
>>>> ret = platform_driver_register(&dp_driver);
>>>> if (ret < 0)
>>>> - goto err_unregister_fimd_drv;
>>>> + goto err_unregister_decon_drv;
>>>> #endif
>>>>
>>>> #ifdef CONFIG_DRM_EXYNOS_DSI
>>>> @@ -668,6 +674,11 @@ err_unregister_dp_drv:
>>>>
>>>> #ifdef CONFIG_DRM_EXYNOS_DP
>>>> platform_driver_unregister(&dp_driver);
>>>> +err_unregister_decon_drv:
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_DRM_EXYNOS_DECON
>>>> + platform_driver_unregister(&decon_driver);
>>>> err_unregister_fimd_drv:
>>>> #endif
>>>>
>>>> @@ -709,6 +720,10 @@ static int exynos_drm_platform_remove(struct
>>> platform_device *pdev)
>>>> platform_driver_unregister(&fimd_driver);
>>>> #endif
>>>>
>>>> +#ifdef CONFIG_DRM_EXYNOS_DECON
>>>> + platform_driver_unregister(&decon_driver);
>>>> +#endif
>>>> +
>>>> #ifdef CONFIG_DRM_EXYNOS_DSI
>>>> platform_driver_unregister(&dsi_driver);
>>>> #endif
>>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h
>>> b/drivers/gpu/drm/exynos/exynos_drm_drv.h
>>>> index d22e640..25f750d 100644
>>>> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
>>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
>>>> @@ -352,6 +352,16 @@ int exynos_drm_probe_vidi(void);
>>>> */
>>>> void exynos_drm_remove_vidi(void);
>>>>
>>>> +/*
>>>> + * this function registers exynos drm decon platform device/driver.
>>>> + */
>>>> +int exynos_drm_probe_decon(void);
>>>> +
>>>> +/*
>>>> + * this function unregister exynos drm decon platform device/driver.
>>>> + */
>>>> +void exynos_drm_remove_decon(void);
>>>> +
>>>> /* This function creates a encoder and a connector, and initializes
>>> them. */
>>>> int exynos_drm_create_enc_conn(struct drm_device *dev,
>>>> struct exynos_drm_display *display);
>>>> @@ -364,6 +374,7 @@ void exynos_drm_component_del(struct device *dev,
>>>> enum exynos_drm_device_type dev_type);
>>>>
>>>> extern struct platform_driver fimd_driver;
>>>> +extern struct platform_driver decon_driver;
>>>> extern struct platform_driver dp_driver;
>>>> extern struct platform_driver dsi_driver;
>>>> extern struct platform_driver mixer_driver;
>>>> diff --git a/include/video/samsung_decon.h b/include/video/samsung_decon.h
>>>> new file mode 100644
>>>> index 0000000..8839120
>>>> --- /dev/null
>>>> +++ b/include/video/samsung_decon.h
>>>> @@ -0,0 +1,346 @@
>>>> +/* include/video/exynos_drm_decon.h
>>>> + *
>>>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
>>>> + * Author: Ajay Kumar <ajaykumar.rs at samsung.com>
>>>> + *
>>>> + * This program is free software; you can redistribute it and/or
>>> modify it
>>>> + * under the terms of the GNU General Public License as published
>>> by the
>>>> + * Free Software Foundation; either version 2 of the License, or
>>> (at your
>>>> + * option) any later version.
>>>> + */
>>>> +
>>>> +/* VIDCON0 */
>>>> +#define VIDCON0 (0x00)
>>>> +
>>>> +#define VIDCON0_SWRESET (1 << 28)
>>>> +#define VIDCON0_DECON_STOP_STATUS (1 << 2)
>>>> +#define VIDCON0_ENVID (1 << 1)
>>>> +#define VIDCON0_ENVID_F (1 << 0)
>>>> +
>>>> +/* VIDOUTCON0 */
>>>> +#define VIDOUTCON0 (0x4)
>>>> +
>>>> +#define VIDOUTCON0_LCD_ON (0x1 << 24)
>>>> +#define VIDOUTCON0_LCD_OFF (0x0 << 24)
>>>> +#define VIDOUTCON0_IF_SHIFT (23)
>>>> +#define VIDOUTCON0_IF_MASK (0x1 << 23)
>>>> +#define VIDOUTCON0_RGBIF (0x0 << 23)
>>>> +#define VIDOUTCON0_I80IF (0x1 << 23)
>>>> +
>>>> +/* VIDCON3 */
>>>> +#define VIDCON3 (0x8)
>>>> +
>>>> +/* VIDCON4 */
>>>> +#define VIDCON4 (0xC)
>>>> +#define VIDCON4_FIFOCNT_START_EN (1 << 0)
>>>> +
>>>> +/* VCLKCON0 */
>>>> +#define VCLKCON0 0x10
>>>> +#define VCLKCON0_CLKVALUP (1 << 8)
>>>> +#define VCLKCON0_VCLKFREE (1 << 0)
>>>> +
>>>> +/* VCLKCON */
>>>> +#define VCLKCON1 0x14
>>>> +#define VCLKCON1_CLKVAL_NUM_VCLK(val) (((val) & 0xff) << 0)
>>>> +#define VCLKCON2 0x18
>>>> +
>>>> +/* SHADOWCON */
>>>> +#define SHADOWCON (0x30)
>>>> +
>>>> +#define SHADOWCON_WINx_PROTECT(_win) (1 << (10 + (_win)))
>>>> +
>>>> +/* WINCONx */
>>>> +#define WINCON(_win) (0x50 + ((_win) * 4))
>>>> +
>>>> +#define WINCONx_BUFSTATUS (0x3 << 30)
>>>> +#define WINCONx_BUFSEL_MASK (0x3 << 28)
>>>> +#define WINCONx_BUFSEL_SHIFT (28)
>>>> +#define WINCONx_TRIPLE_BUF_MODE (0x1 << 18)
>>>> +#define WINCONx_DOUBLE_BUF_MODE (0x0 << 18)
>>>> +#define WINCONx_BURSTLEN_16WORD (0x0 << 11)
>>>> +#define WINCONx_BURSTLEN_8WORD (0x1 << 11)
>>>> +#define WINCONx_BURSTLEN_MASK (0x1 << 11)
>>>> +#define WINCONx_BURSTLEN_SHIFT (11)
>>>> +#define WINCONx_BLD_PLANE (0 << 8)
>>>> +#define WINCONx_BLD_PIX (1 << 8)
>>>> +#define WINCONx_ALPHA_MUL (1 << 7)
>>>> +
>>>> +#define WINCONx_BPPMODE_MASK (0xf << 2)
>>>> +#define WINCONx_BPPMODE_SHIFT (2)
>>>> +#define WINCONx_BPPMODE_16BPP_565 (0x8 << 2)
>>>> +#define WINCONx_BPPMODE_24BPP_BGRx (0x7 << 2)
>>>> +#define WINCONx_BPPMODE_24BPP_RGBx (0x6 << 2)
>>>> +#define WINCONx_BPPMODE_24BPP_xBGR (0x5 << 2)
>>>> +#define WINCONx_BPPMODE_24BPP_xRGB (0x4 << 2)
>>>> +#define WINCONx_BPPMODE_32BPP_BGRA (0x3 << 2)
>>>> +#define WINCONx_BPPMODE_32BPP_RGBA (0x2 << 2)
>>>> +#define WINCONx_BPPMODE_32BPP_ABGR (0x1 << 2)
>>>> +#define WINCONx_BPPMODE_32BPP_ARGB (0x0 << 2)
>>>> +#define WINCONx_ALPHA_SEL (1 << 1)
>>>> +#define WINCONx_ENWIN (1 << 0)
>>>> +
>>>> +#define WINCON1_ALPHA_MUL_F (1 << 7)
>>>> +#define WINCON2_ALPHA_MUL_F (1 << 7)
>>>> +#define WINCON3_ALPHA_MUL_F (1 << 7)
>>>> +#define WINCON4_ALPHA_MUL_F (1 << 7)
>>>> +
>>>> +/* VIDOSDxH: The height for the OSD image(READ ONLY)*/
>>>> +#define VIDOSD_H(_x) (0x80 + ((_x) * 4))
>>>> +
>>>> +/* Frame buffer start addresses: VIDWxxADD0n */
>>>> +#define VIDW_BUF_START(_win) (0x80 + ((_win) * 0x10))
>>>> +#define VIDW_BUF_START1(_win) (0x84 + ((_win) * 0x10))
>>>> +#define VIDW_BUF_START2(_win) (0x88 + ((_win) * 0x10))
>>>> +
>>>> +#define VIDW_WHOLE_X(_win) (0x0130 + ((_win) * 8))
>>>> +#define VIDW_WHOLE_Y(_win) (0x0134 + ((_win) * 8))
>>>> +#define VIDW_OFFSET_X(_win) (0x0170 + ((_win) * 8))
>>>> +#define VIDW_OFFSET_Y(_win) (0x0174 + ((_win) * 8))
>>>> +#define VIDW_BLKOFFSET(_win) (0x01B0 + ((_win) * 4))
>>>> +#define VIDW_BLKSIZE(win) (0x0200 + ((_win) * 4))
>>>> +
>>>> +/* Interrupt controls register */
>>>> +#define VIDINTCON2 (0x228)
>>>> +
>>>> +#define VIDINTCON1_INTEXTRA1_EN (1 << 1)
>>>> +#define VIDINTCON1_INTEXTRA0_EN (1 << 0)
>>>> +
>>>> +/* Interrupt controls and status register */
>>>> +#define VIDINTCON3 (0x22C)
>>>> +
>>>> +#define VIDINTCON1_INTEXTRA1_PEND (1 << 1)
>>>> +#define VIDINTCON1_INTEXTRA0_PEND (1 << 0)
>>>> +
>>>> +/* VIDOSDxA ~ VIDOSDxE */
>>>> +#define VIDOSD_BASE (0x230)
>>>> +
>>>> +#define OSD_STRIDE (0x20)
>>>> +
>>>> +#define VIDOSD_A(_win) (VIDOSD_BASE + \
>>>> + ((_win) * OSD_STRIDE) + 0x00)
>>>> +#define VIDOSD_B(_win) (VIDOSD_BASE + \
>>>> + ((_win) * OSD_STRIDE) + 0x04)
>>>> +#define VIDOSD_C(_win) (VIDOSD_BASE + \
>>>> + ((_win) * OSD_STRIDE) + 0x08)
>>>> +#define VIDOSD_D(_win) (VIDOSD_BASE + \
>>>> + ((_win) * OSD_STRIDE) + 0x0C)
>>>> +#define VIDOSD_E(_win) (VIDOSD_BASE + \
>>>> + ((_win) * OSD_STRIDE) + 0x10)
>>>> +
>>>> +#define VIDOSDxA_TOPLEFT_X_MASK (0x1fff << 13)
>>>> +#define VIDOSDxA_TOPLEFT_X_SHIFT (13)
>>>> +#define VIDOSDxA_TOPLEFT_X_LIMIT (0x1fff)
>>>> +#define VIDOSDxA_TOPLEFT_X(_x) (((_x) & 0x1fff) << 13)
>>>> +
>>>> +#define VIDOSDxA_TOPLEFT_Y_MASK (0x1fff << 0)
>>>> +#define VIDOSDxA_TOPLEFT_Y_SHIFT (0)
>>>> +#define VIDOSDxA_TOPLEFT_Y_LIMIT (0x1fff)
>>>> +#define VIDOSDxA_TOPLEFT_Y(_x) (((_x) & 0x1fff) << 0)
>>>> +
>>>> +#define VIDOSDxB_BOTRIGHT_X_MASK (0x1fff << 13)
>>>> +#define VIDOSDxB_BOTRIGHT_X_SHIFT (13)
>>>> +#define VIDOSDxB_BOTRIGHT_X_LIMIT (0x1fff)
>>>> +#define VIDOSDxB_BOTRIGHT_X(_x) (((_x) & 0x1fff) << 13)
>>>> +
>>>> +#define VIDOSDxB_BOTRIGHT_Y_MASK (0x1fff << 0)
>>>> +#define VIDOSDxB_BOTRIGHT_Y_SHIFT (0)
>>>> +#define VIDOSDxB_BOTRIGHT_Y_LIMIT (0x1fff)
>>>> +#define VIDOSDxB_BOTRIGHT_Y(_x) (((_x) & 0x1fff) << 0)
>>>> +
>>>> +#define VIDOSDxC_ALPHA0_R_F(_x) (((_x) & 0xFF) << 16)
>>>> +#define VIDOSDxC_ALPHA0_G_F(_x) (((_x) & 0xFF) << 8)
>>>> +#define VIDOSDxC_ALPHA0_B_F(_x) (((_x) & 0xFF) << 0)
>>>> +
>>>> +#define VIDOSDxD_ALPHA1_R_F(_x) (((_x) & 0xFF) << 16)
>>>> +#define VIDOSDxD_ALPHA1_G_F(_x) (((_x) & 0xFF) << 8)
>>>> +#define VIDOSDxD_ALPHA1_B_F(_x) (((_x) & 0xFF) >> 0)
>>>> +
>>>> +/* Window MAP (Color map) */
>>>> +#define WINxMAP(_win) (0x340 + ((_win) * 4))
>>>> +
>>>> +#define WINxMAP_MAP (1 << 24)
>>>> +#define WINxMAP_MAP_COLOUR_MASK (0xffffff << 0)
>>>> +#define WINxMAP_MAP_COLOUR_SHIFT (0)
>>>> +#define WINxMAP_MAP_COLOUR_LIMIT (0xffffff)
>>>> +#define WINxMAP_MAP_COLOUR(_x) ((_x) << 0)
>>>> +
>>>> +/* Window colour-key control registers */
>>>> +#define WKEYCON (0x370)
>>>> +
>>>> +#define WKEYCON0 (0x00)
>>>> +#define WKEYCON1 (0x04)
>>>> +#define WxKEYCON0_KEYBL_EN (1 << 26)
>>>> +#define WxKEYCON0_KEYEN_F (1 << 25)
>>>> +#define WxKEYCON0_DIRCON (1 << 24)
>>>> +#define WxKEYCON0_COMPKEY_MASK (0xffffff << 0)
>>>> +#define WxKEYCON0_COMPKEY_SHIFT (0)
>>>> +#define WxKEYCON0_COMPKEY_LIMIT (0xffffff)
>>>> +#define WxKEYCON0_COMPKEY(_x) ((_x) << 0)
>>>> +#define WxKEYCON1_COLVAL_MASK (0xffffff << 0)
>>>> +#define WxKEYCON1_COLVAL_SHIFT (0)
>>>> +#define WxKEYCON1_COLVAL_LIMIT (0xffffff)
>>>> +#define WxKEYCON1_COLVAL(_x) ((_x) << 0)
>>>> +
>>>> +/* color key control register for hardware window 1 ~ 4. */
>>>> +#define WKEYCON0_BASE(x) ((WKEYCON + WKEYCON0) + ((x - 1) * 8))
>>>> +/* color key value register for hardware window 1 ~ 4. */
>>>> +#define WKEYCON1_BASE(x) ((WKEYCON + WKEYCON1) + ((x - 1) * 8))
>>>> +
>>>> +/* Window KEY Alpha value */
>>>> +#define WxKEYALPHA(_win) (0x3A0 + (((_win) - 1) * 0x4))
>>>> +
>>>> +#define Wx_KEYALPHA_R_F_SHIFT (16)
>>>> +#define Wx_KEYALPHA_G_F_SHIFT (8)
>>>> +#define Wx_KEYALPHA_B_F_SHIFT (0)
>>>> +
>>>> +/* Blending equation */
>>>> +#define BLENDE(_win) (0x03C0 + ((_win) * 4))
>>>> +#define BLENDE_COEF_ZERO 0x0
>>>> +#define BLENDE_COEF_ONE 0x1
>>>> +#define BLENDE_COEF_ALPHA_A 0x2
>>>> +#define BLENDE_COEF_ONE_MINUS_ALPHA_A 0x3
>>>> +#define BLENDE_COEF_ALPHA_B 0x4
>>>> +#define BLENDE_COEF_ONE_MINUS_ALPHA_B 0x5
>>>> +#define BLENDE_COEF_ALPHA0 0x6
>>>> +#define BLENDE_COEF_A 0xA
>>>> +#define BLENDE_COEF_ONE_MINUS_A 0xB
>>>> +#define BLENDE_COEF_B 0xC
>>>> +#define BLENDE_COEF_ONE_MINUS_B 0xD
>>>> +#define BLENDE_Q_FUNC(_v) ((_v) << 18)
>>>> +#define BLENDE_P_FUNC(_v) ((_v) << 12)
>>>> +#define BLENDE_B_FUNC(_v) ((_v) << 6)
>>>> +#define BLENDE_A_FUNC(_v) ((_v) << 0)
>>>> +
>>>> +/* Blending equation control */
>>>> +#define BLENDCON (0x3D8)
>>>> +#define BLENDCON_NEW_MASK (1 << 0)
>>>> +#define BLENDCON_NEW_8BIT_ALPHA_VALUE (1 << 0)
>>>> +#define BLENDCON_NEW_4BIT_ALPHA_VALUE (0 << 0)
>>>> +
>>>> +/* Interrupt control register */
>>>> +#define VIDINTCON0 (0x500)
>>>> +
>>>> +#define VIDINTCON0_WAKEUP_MASK (0x3f << 26)
>>>> +#define VIDINTCON0_INTEXTRAEN (1 << 21)
>>>> +
>>>> +#define VIDINTCON0_FRAMESEL0_SHIFT (15)
>>>> +#define VIDINTCON0_FRAMESEL0_MASK (0x3 << 15)
>>>> +#define VIDINTCON0_FRAMESEL0_BACKPORCH (0x0 << 15)
>>>> +#define VIDINTCON0_FRAMESEL0_VSYNC (0x1 << 15)
>>>> +#define VIDINTCON0_FRAMESEL0_ACTIVE (0x2 << 15)
>>>> +#define VIDINTCON0_FRAMESEL0_FRONTPORCH (0x3 << 15)
>>>> +
>>>> +#define VIDINTCON0_INT_FRAME (1 << 11)
>>>> +
>>>> +#define VIDINTCON0_FIFOLEVEL_MASK (0x7 << 3)
>>>> +#define VIDINTCON0_FIFOLEVEL_SHIFT (3)
>>>> +#define VIDINTCON0_FIFOLEVEL_EMPTY (0x0 << 3)
>>>> +#define VIDINTCON0_FIFOLEVEL_TO25PC (0x1 << 3)
>>>> +#define VIDINTCON0_FIFOLEVEL_TO50PC (0x2 << 3)
>>>> +#define VIDINTCON0_FIFOLEVEL_FULL (0x4 << 3)
>>>> +
>>>> +#define VIDINTCON0_FIFOSEL_MAIN_EN (1 << 1)
>>>> +#define VIDINTCON0_INT_FIFO (1 << 1)
>>>> +
>>>> +#define VIDINTCON0_INT_ENABLE (1 << 0)
>>>> +
>>>> +/* Interrupt controls and status register */
>>>> +#define VIDINTCON1 (0x504)
>>>> +
>>>> +#define VIDINTCON1_INT_EXTRA (1 << 3)
>>>> +#define VIDINTCON1_INT_I80 (1 << 2)
>>>> +#define VIDINTCON1_INT_FRAME (1 << 1)
>>>> +#define VIDINTCON1_INT_FIFO (1 << 0)
>>>> +
>>>> +/* VIDCON1 */
>>>> +#define VIDCON1(_x) (0x0600 + ((_x) * 0x50))
>>>> +#define VIDCON1_LINECNT_GET(_v) (((_v) >> 17) & 0x1fff)
>>>> +#define VIDCON1_VCLK_MASK (0x3 << 9)
>>>> +#define VIDCON1_VCLK_HOLD (0x0 << 9)
>>>> +#define VIDCON1_VCLK_RUN (0x1 << 9)
>>>> +#define VIDCON1_VCLK_RUN_VDEN_DISABLE (0x3 << 9)
>>>> +#define VIDCON1_RGB_ORDER_O_MASK (0x7 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_RGB (0x0 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_GBR (0x1 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_BRG (0x2 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_BGR (0x4 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_RBG (0x5 << 4)
>>>> +#define VIDCON1_RGB_ORDER_O_GRB (0x6 << 4)
>>>> +
>>>> +/* VIDTCON0 */
>>>> +#define VIDTCON0 (0x610)
>>>> +
>>>> +#define VIDTCON0_VBPD_MASK (0xffff << 16)
>>>> +#define VIDTCON0_VBPD_SHIFT (16)
>>>> +#define VIDTCON0_VBPD_LIMIT (0xffff)
>>>> +#define VIDTCON0_VBPD(_x) ((_x) << 16)
>>>> +
>>>> +#define VIDTCON0_VFPD_MASK (0xffff << 0)
>>>> +#define VIDTCON0_VFPD_SHIFT (0)
>>>> +#define VIDTCON0_VFPD_LIMIT (0xffff)
>>>> +#define VIDTCON0_VFPD(_x) ((_x) << 0)
>>>> +
>>>> +/* VIDTCON1 */
>>>> +#define VIDTCON1 (0x614)
>>>> +
>>>> +#define VIDTCON1_VSPW_MASK (0xffff << 16)
>>>> +#define VIDTCON1_VSPW_SHIFT (16)
>>>> +#define VIDTCON1_VSPW_LIMIT (0xffff)
>>>> +#define VIDTCON1_VSPW(_x) ((_x) << 16)
>>>> +
>>>> +/* VIDTCON2 */
>>>> +#define VIDTCON2 (0x618)
>>>> +
>>>> +#define VIDTCON2_HBPD_MASK (0xffff << 16)
>>>> +#define VIDTCON2_HBPD_SHIFT (16)
>>>> +#define VIDTCON2_HBPD_LIMIT (0xffff)
>>>> +#define VIDTCON2_HBPD(_x) ((_x) << 16)
>>>> +
>>>> +#define VIDTCON2_HFPD_MASK (0xffff << 0)
>>>> +#define VIDTCON2_HFPD_SHIFT (0)
>>>> +#define VIDTCON2_HFPD_LIMIT (0xffff)
>>>> +#define VIDTCON2_HFPD(_x) ((_x) << 0)
>>>> +
>>>> +/* VIDTCON3 */
>>>> +#define VIDTCON3 (0x61C)
>>>> +
>>>> +#define VIDTCON3_HSPW_MASK (0xffff << 16)
>>>> +#define VIDTCON3_HSPW_SHIFT (16)
>>>> +#define VIDTCON3_HSPW_LIMIT (0xffff)
>>>> +#define VIDTCON3_HSPW(_x) ((_x) << 16)
>>>> +
>>>> +/* VIDTCON4 */
>>>> +#define VIDTCON4 (0x620)
>>>> +
>>>> +#define VIDTCON4_LINEVAL_MASK (0xfff << 16)
>>>> +#define VIDTCON4_LINEVAL_SHIFT (16)
>>>> +#define VIDTCON4_LINEVAL_LIMIT (0xfff)
>>>> +#define VIDTCON4_LINEVAL(_x) (((_x) & 0xfff) << 16)
>>>> +
>>>> +#define VIDTCON4_HOZVAL_MASK (0xfff << 0)
>>>> +#define VIDTCON4_HOZVAL_SHIFT (0)
>>>> +#define VIDTCON4_HOZVAL_LIMIT (0xfff)
>>>> +#define VIDTCON4_HOZVAL(_x) (((_x) & 0xfff) << 0)
>>>> +
>>>> +/* LINECNT OP THRSHOLD*/
>>>> +#define LINECNT_OP_THRESHOLD (0x630)
>>>> +
>>>> +/* CRCCTRL */
>>>> +#define CRCCTRL (0x6C8)
>>>> +#define CRCCTRL_CRCCLKEN (0x1 << 2)
>>>> +#define CRCCTRL_CRCSTART_F (0x1 << 1)
>>>> +#define CRCCTRL_CRCEN (0x1 << 0)
>>>> +
>>>> +/* DECON_CMU */
>>>> +#define DECON_CMU (0x704)
>>>> +
>>>> +#define DECON_CMU_ALL_CLKGATE_ENABLE (0x3)
>>>> +#define DECON_CMU_SE_CLKGATE_ENABLE (0x1 << 2)
>>>> +#define DECON_CMU_SFR_CLKGATE_ENABLE (0x1 << 1)
>>>> +#define DECON_CMU_MEM_CLKGATE_ENABLE (0x1 << 0)
>>>> +
>>>> +/* DECON_UPDATE */
>>>> +#define DECON_UPDATE (0x710)
>>>> +
>>>> +#define DECON_UPDATE_SLAVE_SYNC (1 << 4)
>>>> +#define DECON_UPDATE_STANDALONE_F (1 << 0)
>>>>
>>>
>>>
>>
>> Thanks,
>> Ajay
>> --
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>>
>
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