On 01.08.2017 12:02, Inki Dae wrote:
> Seems you mixed some different changes below with one patch.
>
> 1. add checking panel mode with i80_mode.
> 2. change te_irq to irq_te.
> 3. add new function, decon_atomic_check.
> 4. add considering more error cases in decon_conf_irq function.
> 5. register command and video mode interrupt handlers regardless of panel mode.
>
> And the subject of this patch doesn't say everything to above changes.
I will try to split these changes into smaller patches. Moreover since
recent introduction of mode_valid callback for crtc I will drop
atomic_check in favor of it.
Regards
Andrzej
>
> Thanks,
> Inki Dae
>
> 2017년 04월 18일 21:40에 Andrzej Hajda 이(가) 쓴 글:
>> Since panel's mode of work is propagated properly from panel to DECON,
>> there is no need to use redundant private property. The only issue with
>> such approach is that check for required interrupts should be postponed
>> until panel communicate its requirements - ie to atomic_check.
>>
>> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 98 ++++++++++++++++-----------
>> 1 file changed, 57 insertions(+), 41 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>> index 237b4c9..7a09e03 100644
>> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
>> @@ -34,9 +34,8 @@
>> #define WINDOWS_NR 3
>> #define MIN_FB_WIDTH_FOR_16WORD_BURST 128
>>
>> -#define IFTYPE_I80 (1 << 0)
>> -#define I80_HW_TRG (1 << 1)
>> -#define IFTYPE_HDMI (1 << 2)
>> +#define I80_HW_TRG (1 << 0)
>> +#define IFTYPE_HDMI (1 << 1)
>>
>> static const char * const decon_clks_name[] = {
>> "pclk",
>> @@ -58,7 +57,9 @@ struct decon_context {
>> struct regmap *sysreg;
>> struct clk *clks[ARRAY_SIZE(decon_clks_name)];
>> unsigned int irq;
>> - unsigned int te_irq;
>> + unsigned int irq_vsync;
>> + unsigned int irq_lcd_sys;
>> + unsigned int irq_te;
>> unsigned long out_type;
>> int first_win;
>> spinlock_t vblank_lock;
>> @@ -91,7 +92,7 @@ static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
>> u32 val;
>>
>> val = VIDINTCON0_INTEN;
>> - if (ctx->out_type & IFTYPE_I80)
>> + if (crtc->i80_mode)
>> val |= VIDINTCON0_FRAMEDONE;
>> else
>> val |= VIDINTCON0_INTFRMEN | VIDINTCON0_FRAMESEL_FP;
>> @@ -100,7 +101,7 @@ static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
>>
>> enable_irq(ctx->irq);
>> if (!(ctx->out_type & I80_HW_TRG))
>> - enable_irq(ctx->te_irq);
>> + enable_irq(ctx->irq_te);
>>
>> return 0;
>> }
>> @@ -110,7 +111,7 @@ static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
>> struct decon_context *ctx = crtc->ctx;
>>
>> if (!(ctx->out_type & I80_HW_TRG))
>> - disable_irq_nosync(ctx->te_irq);
>> + disable_irq_nosync(ctx->irq_te);
>> disable_irq_nosync(ctx->irq);
>>
>> writel(0, ctx->addr + DECON_VIDINTCON0);
>> @@ -140,7 +141,7 @@ static u32 decon_get_frame_count(struct decon_context *ctx, bool end)
>>
>> switch (status & (VIDCON1_VSTATUS_MASK | VIDCON1_I80_ACTIVE)) {
>> case VIDCON1_VSTATUS_VS:
>> - if (!(ctx->out_type & IFTYPE_I80))
>> + if (!(ctx->crtc->i80_mode))
>> --frm;
>> break;
>> case VIDCON1_VSTATUS_BP:
>> @@ -167,7 +168,7 @@ static u32 decon_get_vblank_counter(struct exynos_drm_crtc *crtc)
>>
>> static void decon_setup_trigger(struct decon_context *ctx)
>> {
>> - if (!(ctx->out_type & (IFTYPE_I80 | I80_HW_TRG)))
>> + if (!ctx->crtc->i80_mode && !(ctx->out_type & I80_HW_TRG))
>> return;
>>
>> if (!(ctx->out_type & I80_HW_TRG)) {
>> @@ -207,7 +208,7 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
>> val = VIDOUT_LCD_ON;
>> if (interlaced)
>> val |= VIDOUT_INTERLACE_EN_F;
>> - if (ctx->out_type & IFTYPE_I80) {
>> + if (crtc->i80_mode) {
>> val |= VIDOUT_COMMAND_IF;
>> } else {
>> val |= VIDOUT_RGB_IF;
>> @@ -223,7 +224,7 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
>> VIDTCON2_HOZVAL(m->hdisplay - 1);
>> writel(val, ctx->addr + DECON_VIDTCON2);
>>
>> - if (!(ctx->out_type & IFTYPE_I80)) {
>> + if (!crtc->i80_mode) {
>> int vbp = m->crtc_vtotal - m->crtc_vsync_end;
>> int vfp = m->crtc_vsync_start - m->crtc_vdisplay;
>>
>> @@ -456,7 +457,7 @@ static void decon_disable(struct exynos_drm_crtc *crtc)
>> int i;
>>
>> if (!(ctx->out_type & I80_HW_TRG))
>> - synchronize_irq(ctx->te_irq);
>> + synchronize_irq(ctx->irq_te);
>> synchronize_irq(ctx->irq);
>>
>> /*
>> @@ -511,6 +512,22 @@ static void decon_clear_channels(struct exynos_drm_crtc *crtc)
>> clk_disable_unprepare(ctx->clks[i]);
>> }
>>
>> +static int decon_atomic_check(struct exynos_drm_crtc *crtc,
>> + struct drm_crtc_state *state)
>> +{
>> + struct decon_context *ctx = crtc->ctx;
>> +
>> + ctx->irq = crtc->i80_mode ? ctx->irq_lcd_sys : ctx->irq_vsync;
>> +
>> + if (ctx->irq)
>> + return 0;
>> +
>> + dev_err(ctx->dev, "Panel requires %s mode, but appropriate interrupt is not provided.\n",
>> + crtc->i80_mode ? "command" : "video");
>> +
>> + return -EINVAL;
>> +}
>> +
>> static const struct exynos_drm_crtc_ops decon_crtc_ops = {
>> .enable = decon_enable,
>> .disable = decon_disable,
>> @@ -521,6 +538,7 @@ static const struct exynos_drm_crtc_ops decon_crtc_ops = {
>> .update_plane = decon_update_plane,
>> .disable_plane = decon_disable_plane,
>> .atomic_flush = decon_atomic_flush,
>> + .atomic_check = decon_atomic_check,
>> };
>>
>> static int decon_bind(struct device *dev, struct device *master, void *data)
>> @@ -670,19 +688,22 @@ static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
>> MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
>>
>> static int decon_conf_irq(struct decon_context *ctx, const char *name,
>> - irq_handler_t handler, unsigned long int flags, bool required)
>> + irq_handler_t handler, unsigned long int flags)
>> {
>> struct platform_device *pdev = to_platform_device(ctx->dev);
>> int ret, irq = platform_get_irq_byname(pdev, name);
>>
>> if (irq < 0) {
>> - if (irq == -EPROBE_DEFER)
>> + switch (irq) {
>> + case -EPROBE_DEFER:
>> + return irq;
>> + case -ENODATA:
>> + case -ENXIO:
>> + return 0;
>> + default:
>> + dev_err(ctx->dev, "IRQ %s get failed, %d\n", name, irq);
>> return irq;
>> - if (required)
>> - dev_err(ctx->dev, "cannot get %s IRQ\n", name);
>> - else
>> - irq = 0;
>> - return irq;
>> + }
>> }
>> irq_set_status_flags(irq, IRQ_NOAUTOEN);
>> ret = devm_request_irq(ctx->dev, irq, handler, flags, "drm_decon", ctx);
>> @@ -710,11 +731,8 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
>> ctx->out_type = (unsigned long)of_device_get_match_data(dev);
>> spin_lock_init(&ctx->vblank_lock);
>>
>> - if (ctx->out_type & IFTYPE_HDMI) {
>> + if (ctx->out_type & IFTYPE_HDMI)
>> ctx->first_win = 1;
>> - } else if (of_get_child_by_name(dev->of_node, "i80-if-timings")) {
>> - ctx->out_type |= IFTYPE_I80;
>> - }
>>
>> for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
>> struct clk *clk;
>> @@ -738,25 +756,23 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
>> return PTR_ERR(ctx->addr);
>> }
>>
>> - if (ctx->out_type & IFTYPE_I80) {
>> - ret = decon_conf_irq(ctx, "lcd_sys", decon_irq_handler, 0, true);
>> - if (ret < 0)
>> - return ret;
>> - ctx->irq = ret;
>> + ret = decon_conf_irq(ctx, "vsync", decon_irq_handler, 0);
>> + if (ret < 0)
>> + return ret;
>> + ctx->irq_vsync = ret;
>>
>> - ret = decon_conf_irq(ctx, "te", decon_te_irq_handler,
>> - IRQF_TRIGGER_RISING, false);
>> - if (ret < 0)
>> - return ret;
>> - if (ret) {
>> - ctx->te_irq = ret;
>> - ctx->out_type &= ~I80_HW_TRG;
>> - }
>> - } else {
>> - ret = decon_conf_irq(ctx, "vsync", decon_irq_handler, 0, true);
>> - if (ret < 0)
>> - return ret;
>> - ctx->irq = ret;
>> + ret = decon_conf_irq(ctx, "lcd_sys", decon_irq_handler, 0);
>> + if (ret < 0)
>> + return ret;
>> + ctx->irq_lcd_sys = ret;
>> +
>> + ret = decon_conf_irq(ctx, "te", decon_te_irq_handler,
>> + IRQF_TRIGGER_RISING);
>> + if (ret < 0)
>> + return ret;
>> + if (ret) {
>> + ctx->irq_te = ret;
>> + ctx->out_type &= ~I80_HW_TRG;
>> }
>>
>> if (ctx->out_type & I80_HW_TRG) {
>>
>
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