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path: root/drivers/gpu/drm/nouveau/nv04_timer.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_timer.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv04_timer.c83
1 files changed, 0 insertions, 83 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_timer.c b/drivers/gpu/drm/nouveau/nv04_timer.c
deleted file mode 100644
index 71ad319affcb..000000000000
--- a/drivers/gpu/drm/nouveau/nv04_timer.c
+++ /dev/null
@@ -1,83 +0,0 @@
-#include <drm/drmP.h>
-#include "nouveau_drv.h"
-#include <drm/nouveau_drm.h>
-#include "nouveau_hw.h"
-
-int
-nv04_timer_init(struct drm_device *dev)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- u32 m, n, d;
-
- nv_wr32(dev, NV04_PTIMER_INTR_EN_0, 0x00000000);
- nv_wr32(dev, NV04_PTIMER_INTR_0, 0xFFFFFFFF);
-
- /* aim for 31.25MHz, which gives us nanosecond timestamps */
- d = 1000000 / 32;
-
- /* determine base clock for timer source */
- if (dev_priv->chipset < 0x40) {
- n = nouveau_hw_get_clock(dev, PLL_CORE);
- } else
- if (dev_priv->chipset == 0x40) {
- /*XXX: figure this out */
- n = 0;
- } else {
- n = dev_priv->crystal;
- m = 1;
- while (n < (d * 2)) {
- n += (n / m);
- m++;
- }
-
- nv_wr32(dev, 0x009220, m - 1);
- }
-
- if (!n) {
- NV_WARN(dev, "PTIMER: unknown input clock freq\n");
- if (!nv_rd32(dev, NV04_PTIMER_NUMERATOR) ||
- !nv_rd32(dev, NV04_PTIMER_DENOMINATOR)) {
- nv_wr32(dev, NV04_PTIMER_NUMERATOR, 1);
- nv_wr32(dev, NV04_PTIMER_DENOMINATOR, 1);
- }
- return 0;
- }
-
- /* reduce ratio to acceptable values */
- while (((n % 5) == 0) && ((d % 5) == 0)) {
- n /= 5;
- d /= 5;
- }
-
- while (((n % 2) == 0) && ((d % 2) == 0)) {
- n /= 2;
- d /= 2;
- }
-
- while (n > 0xffff || d > 0xffff) {
- n >>= 1;
- d >>= 1;
- }
-
- nv_wr32(dev, NV04_PTIMER_NUMERATOR, n);
- nv_wr32(dev, NV04_PTIMER_DENOMINATOR, d);
- return 0;
-}
-
-u64
-nv04_timer_read(struct drm_device *dev)
-{
- u32 hi, lo;
-
- do {
- hi = nv_rd32(dev, NV04_PTIMER_TIME_1);
- lo = nv_rd32(dev, NV04_PTIMER_TIME_0);
- } while (hi != nv_rd32(dev, NV04_PTIMER_TIME_1));
-
- return ((u64)hi << 32 | lo);
-}
-
-void
-nv04_timer_takedown(struct drm_device *dev)
-{
-}