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Message-ID: <1395329443.17233.10.camel@intelbox>
Date: Thu, 20 Mar 2014 17:30:43 +0200
From: Imre Deak <imre.deak@...el.com>
To: sagar.a.kamble@...el.com
Cc: intel-gfx@...ts.freedesktop.org,
Daniel Vetter <daniel.vetter@...ll.ch>,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
"G, Pallavi" <pallavi.g@...el.com>
Subject: Re: [PATCH v4 1/1] drm/i915: Enabling 128x128 and 256x256 ARGB
Cursor Support
On Mon, 2014-03-10 at 17:06 +0530, sagar.a.kamble@...el.com wrote:
> From: Sagar Kamble <sagar.a.kamble@...el.com>
>
> With this patch we allow larger cursor planes of sizes 128x128
> and 256x256.
>
> v2: Added more precise check on size while setting cursor plane.
>
> v3: Changes related to restructuring cursor size restrictions
> and DRM_DEBUG usage.
>
> v4: Indentation related changes for setting cursor control and
> implementing DRM_CAP_CURSOR_WIDTH and DRM_CAP_CURSOR_HEIGHT
>
> Testcase: igt/kms_cursor_crc
> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
> Cc: Jani Nikula <jani.nikula@...ux.intel.com>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: dri-devel@...ts.freedesktop.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: G, Pallavi <pallavi.g@...el.com>
> Signed-off-by: Sagar Kamble <sagar.a.kamble@...el.com>
Looks ok:
Reviewed-by: Imre Deak <imre.deak@...el.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 4 +++
> drivers/gpu/drm/i915/intel_display.c | 53 ++++++++++++++++++++++++++++++++----
> drivers/gpu/drm/i915/intel_drv.h | 7 +++++
> 3 files changed, 59 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 146609a..aee8258 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3551,7 +3551,11 @@ enum punit_power_well {
> /* New style CUR*CNTR flags */
> #define CURSOR_MODE 0x27
> #define CURSOR_MODE_DISABLE 0x00
> +#define CURSOR_MODE_128_32B_AX 0x02
> +#define CURSOR_MODE_256_32B_AX 0x03
> #define CURSOR_MODE_64_32B_AX 0x07
> +#define CURSOR_MODE_128_ARGB_AX ((1 << 5) | CURSOR_MODE_128_32B_AX)
> +#define CURSOR_MODE_256_ARGB_AX ((1 << 5) | CURSOR_MODE_256_32B_AX)
> #define CURSOR_MODE_64_ARGB_AX ((1 << 5) | CURSOR_MODE_64_32B_AX)
> #define MCURSOR_PIPE_SELECT (1 << 28)
> #define MCURSOR_PIPE_A 0x00
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 0868afb..ec6a073 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -7440,10 +7440,26 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
> bool visible = base != 0;
>
> if (intel_crtc->cursor_visible != visible) {
> + int16_t width = intel_crtc->cursor_width;
> uint32_t cntl = I915_READ(CURCNTR(pipe));
> if (base) {
> cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
> - cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
> + cntl |= MCURSOR_GAMMA_ENABLE;
> +
> + switch (width) {
> + case 64:
> + cntl |= CURSOR_MODE_64_ARGB_AX;
> + break;
> + case 128:
> + cntl |= CURSOR_MODE_128_ARGB_AX;
> + break;
> + case 256:
> + cntl |= CURSOR_MODE_256_ARGB_AX;
> + break;
> + default:
> + WARN_ON(1);
> + return;
> + }
> cntl |= pipe << 28; /* Connect to correct pipe */
> } else {
> cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
> @@ -7468,10 +7484,25 @@ static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
> bool visible = base != 0;
>
> if (intel_crtc->cursor_visible != visible) {
> + int16_t width = intel_crtc->cursor_width;
> uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
> if (base) {
> cntl &= ~CURSOR_MODE;
> - cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
> + cntl |= MCURSOR_GAMMA_ENABLE;
> + switch (width) {
> + case 64:
> + cntl |= CURSOR_MODE_64_ARGB_AX;
> + break;
> + case 128:
> + cntl |= CURSOR_MODE_128_ARGB_AX;
> + break;
> + case 256:
> + cntl |= CURSOR_MODE_256_ARGB_AX;
> + break;
> + default:
> + WARN_ON(1);
> + return;
> + }
> } else {
> cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
> cntl |= CURSOR_MODE_DISABLE;
> @@ -7567,9 +7598,11 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
> goto finish;
> }
>
> - /* Currently we only support 64x64 cursors */
> - if (width != 64 || height != 64) {
> - DRM_ERROR("we currently only support 64x64 cursors\n");
> + /* Check for which cursor types we support */
> + if (!((width == 64 && height == 64) ||
> + (width == 128 && height == 128 && !IS_GEN2(dev)) ||
> + (width == 256 && height == 256 && !IS_GEN2(dev)))) {
> + DRM_DEBUG("Cursor dimension not supported\n");
> return -EINVAL;
> }
>
> @@ -10331,6 +10364,16 @@ static void intel_crtc_init(struct drm_device *dev, int pipe)
>
> drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
>
> + if (IS_GEN2(dev)) {
> + intel_crtc->max_cursor_width = GEN2_CURSOR_WIDTH;
> + intel_crtc->max_cursor_height = GEN2_CURSOR_HEIGHT;
> + } else {
> + intel_crtc->max_cursor_width = CURSOR_WIDTH;
> + intel_crtc->max_cursor_height = CURSOR_HEIGHT;
> + }
> + dev->mode_config.cursor_width = intel_crtc->max_cursor_width;
> + dev->mode_config.cursor_height = intel_crtc->max_cursor_height;
> +
> drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
> for (i = 0; i < 256; i++) {
> intel_crtc->lut_r[i] = i;
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 9c70905..eca4a0a 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -78,6 +78,12 @@
> #define MAX_OUTPUTS 6
> /* maximum connectors per crtcs in the mode set */
>
> +/* Maximum cursor sizes */
> +#define GEN2_CURSOR_WIDTH 64
> +#define GEN2_CURSOR_HEIGHT 64
> +#define CURSOR_WIDTH 256
> +#define CURSOR_HEIGHT 256
> +
> #define INTEL_I2C_BUS_DVO 1
> #define INTEL_I2C_BUS_SDVO 2
>
> @@ -364,6 +370,7 @@ struct intel_crtc {
> uint32_t cursor_addr;
> int16_t cursor_x, cursor_y;
> int16_t cursor_width, cursor_height;
> + int16_t max_cursor_width, max_cursor_height;
> bool cursor_visible;
>
> struct intel_crtc_config config;
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