2017년 01월 05일 19:15에 Andrzej Hajda 이(가) 쓴 글:
> On 05.01.2017 11:05, Inki Dae wrote:
>>
>> 2017년 01월 02일 17:39에 Andrzej Hajda 이(가) 쓴 글:
>>> In case of HW trigger mode, sysreg register should be configured to
>>> enable TE functionality. The patch refactors also trigger setup function.
>>>
>>> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
>>> ---
>>> v2: fixed bitop operator (thanks Ilia)
>>> ---
>>> drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 40 +++++++++++++++++++++------
>>> 1 file changed, 32 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>>> index 6ca1f31..b63b8e6 100644
>>> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>>> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>>> @@ -13,9 +13,11 @@
>>> #include <linux/platform_device.h>
>>> #include <linux/clk.h>
>>> #include <linux/component.h>
>>> +#include <linux/mfd/syscon.h>
>>> #include <linux/of_device.h>
>>> #include <linux/of_gpio.h>
>>> #include <linux/pm_runtime.h>
>>> +#include <linux/regmap.h>
>>>
>>> #include <video/exynos5433_decon.h>
>>>
>>> @@ -25,6 +27,9 @@
>>> #include "exynos_drm_plane.h"
>>> #include "exynos_drm_iommu.h"
>>>
>>> +#define DSD_CFG_MUX 0x1004
>>> +#define DSD_CFG_MUX_TE_UNMASK_GLOBAL BIT(13)
>>> +
>>> #define WINDOWS_NR 3
>>> #define MIN_FB_WIDTH_FOR_16WORD_BURST 128
>>>
>>> @@ -56,6 +61,7 @@ struct decon_context {
>>> struct exynos_drm_plane planes[WINDOWS_NR];
>>> struct exynos_drm_plane_config configs[WINDOWS_NR];
>>> void __iomem *addr;
>>> + struct regmap *sysreg;
>>> struct clk *clks[ARRAY_SIZE(decon_clks_name)];
>>> int pipe;
>>> unsigned long flags;
>>> @@ -117,12 +123,22 @@ static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
>>>
>>> static void decon_setup_trigger(struct decon_context *ctx)
>>> {
>>> - u32 val = !(ctx->out_type & I80_HW_TRG)
>>> - ? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
>>> - TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
>>> - : TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
>>> - TRIGCON_HWTRIGMASK | TRIGCON_HWTRIGEN;
>>> - writel(val, ctx->addr + DECON_TRIGCON);
>>> + if (!(ctx->out_type & (IFTYPE_I80 | I80_HW_TRG)))
>>> + return;
>>> +
>>> + if (!(ctx->out_type & I80_HW_TRG)) {
>>> + writel(TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
>>> + | TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN,
>>> + ctx->addr + DECON_TRIGCON);
>>> + return;
>>> + }
>>> +
>>> + writel(TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F | TRIGCON_HWTRIGMASK
>>> + | TRIGCON_HWTRIGEN, ctx->addr + DECON_TRIGCON);
>>> +
>>> + if (regmap_update_bits(ctx->sysreg, DSD_CFG_MUX,
>>> + DSD_CFG_MUX_TE_UNMASK_GLOBAL, ~0))
>>> + DRM_ERROR("Cannot update sysreg.\n");
>>> }
>>>
>>> static void decon_commit(struct exynos_drm_crtc *crtc)
>>> @@ -147,8 +163,7 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
>>> val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
>>> writel(val, ctx->addr + DECON_CMU);
>>>
>>> - if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))
>>> - decon_setup_trigger(ctx);
>>> + decon_setup_trigger(ctx);
>> Calling this function in video mode is unnecessary. Why did you remove above condition?
>
> I have moved the condition to decon_setup_trigger.
In video mode, it doesn't need to even call decon_setup_trigger function even though this function is just returned.
This is really trivial but it'd better not to call this function so seems no reason to modify.
>
> Regards
> Andrzej
>
>>
>>>
>>> /* lcd on and use command if */
>>> val = VIDOUT_LCD_ON;
>>> @@ -640,6 +655,15 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
>>> ctx->out_type |= IFTYPE_I80;
>>> }
>>>
>>> + if (ctx->out_type & I80_HW_TRG) {
>>> + ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
>>> + "samsung,disp-sysreg");
>>> + if (IS_ERR(ctx->sysreg)) {
>>> + dev_err(dev, "failed to get system register\n");
>>> + return PTR_ERR(ctx->sysreg);
>>> + }
>>> + }
>>> +
>>> for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
>>> struct clk *clk;
>>>
>>>
>>
>
>
>
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