Split out into a new externally visible function, as the IOMMUv2
code needs this functionality, too.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
+int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
+
+ do {
+ u32 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
+
+ if ((idle & gpu->idle_mask) == gpu->idle_mask)
+ return 0;
+
+ if (time_is_before_jiffies(timeout)) {
+ dev_warn(gpu->dev,
+ "timed out waiting for idle: idle=0x%x\n",
+ idle);
+ return -ETIMEDOUT;
+ }
+
+ udelay(5);
+ } while (1);
+}
+
static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu)
{
if (gpu->buffer) {
static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu)
{
if (gpu->buffer) {
- unsigned long timeout;
-
/* Replace the last WAIT with END */
etnaviv_buffer_end(gpu);
/* Replace the last WAIT with END */
etnaviv_buffer_end(gpu);
* happen quickly (as the WAIT is only 200 cycles). If
* we fail, just warn and continue.
*/
* happen quickly (as the WAIT is only 200 cycles). If
* we fail, just warn and continue.
*/
- timeout = jiffies + msecs_to_jiffies(100);
- do {
- u32 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
-
- if ((idle & gpu->idle_mask) == gpu->idle_mask)
- break;
-
- if (time_is_before_jiffies(timeout)) {
- dev_warn(gpu->dev,
- "timed out waiting for idle: idle=0x%x\n",
- idle);
- break;
- }
-
- udelay(5);
- } while (1);
+ etnaviv_gpu_wait_idle(gpu, 100);
}
return etnaviv_gpu_clk_disable(gpu);
}
return etnaviv_gpu_clk_disable(gpu);
void etnaviv_gpu_cmdbuf_free(struct etnaviv_cmdbuf *cmdbuf);
int etnaviv_gpu_pm_get_sync(struct etnaviv_gpu *gpu);
void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu);
void etnaviv_gpu_cmdbuf_free(struct etnaviv_cmdbuf *cmdbuf);
int etnaviv_gpu_pm_get_sync(struct etnaviv_gpu *gpu);
void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu);
+int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms);
extern struct platform_driver etnaviv_gpu_driver;
extern struct platform_driver etnaviv_gpu_driver;