[PATCH 2/7] drm/i915: Move num_plane to the intel_device_info structure

Damien Lespiau
2013-12-05T13:56:36Z

And rename it to num_planes to match num_pipes.

This limit lives with num_pipes really, and now that dev_priv->info is
writable we can put it there instead.

While at it, introduce a intel_device_info_runtime_init() where we'll be
able to gather the device info fields at run-time.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 21 ++++++++++++++++++---
drivers/gpu/drm/i915/i915_drv.h | 5 ++---
drivers/gpu/drm/i915/intel_display.c | 4 ++--
3 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 63aae7b..cd22ec6 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1449,6 +1449,23 @@ static void i915_dump_device_info(struct drm_i915_private *dev_priv)
#undef SEP_COMMA
}

+/*
+ * Determine various intel_device_info fields at runtime.
+ *
+ * Use it when either:
+ * - it's judged too laborious to fill n static structures with the limit
+ * when a simple if statement does the job,
+ * - run-time checks (eg read fuse/strap registers) are needed.
+ */
+static void intel_device_info_runtime_init(struct drm_device *dev)
+{
+ struct intel_device_info *info = INTEL_INFO(dev);
+
+ info->num_planes = 1;
+ if (IS_VALLEYVIEW(dev))
+ info->num_planes = 2;
+}
+
/**
* i915_driver_load - setup chip and create an initial config
* @dev: DRM device
@@ -1629,9 +1646,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
if (!IS_I945G(dev) && !IS_I945GM(dev))
pci_enable_msi(dev->pdev);

- dev_priv->num_plane = 1;
- if (IS_VALLEYVIEW(dev))
- dev_priv->num_plane = 2;
+ intel_device_info_runtime_init(dev);

if (INTEL_INFO(dev)->num_pipes) {
ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 55ad44e..8a3e5cd 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -77,7 +77,7 @@ enum plane {
};
#define plane_name(p) ((p) + 'A')

-#define sprite_name(p, s) ((p) * dev_priv->num_plane + (s) + 'A')
+#define sprite_name(p, s) ((p) * INTEL_INFO(dev)->num_planes + (s) + 'A')

enum port {
PORT_A = 0,
@@ -503,6 +503,7 @@ struct intel_uncore {
struct intel_device_info {
u32 display_mmio_offset;
u8 num_pipes:3;
+ u8 num_planes:2;
u8 gen;
u8 ring_mask; /* Rings supported by the HW */
DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG, SEP_SEMICOLON);
@@ -1385,8 +1386,6 @@ typedef struct drm_i915_private {
u32 hpd_event_bits;
struct timer_list hotplug_reenable_timer;

- int num_plane;
-
struct i915_fbc fbc;
struct intel_opregion opregion;
struct intel_vbt_data vbt;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8b50b5f..4d0b35a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1189,7 +1189,7 @@ static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
u32 val;

if (IS_VALLEYVIEW(dev)) {
- for (i = 0; i < dev_priv->num_plane; i++) {
+ for (i = 0; i < INTEL_INFO(dev)->num_planes; i++) {
reg = SPCNTR(pipe, i);
val = I915_READ(reg);
WARN((val & SP_ENABLE),
@@ -10853,7 +10853,7 @@ void intel_modeset_init(struct drm_device *dev)

for_each_pipe(i) {
intel_crtc_init(dev, i);
- for (j = 0; j < dev_priv->num_plane; j++) {
+ for (j = 0; j < INTEL_INFO(dev)->num_planes; j++) {
ret = intel_plane_init(dev, i, j);
if (ret)
DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
--
1.8.3.1