提交 b88163e3 编写于 作者: L Lucas Stach

drm/etnaviv: split out wait for gpu idle

Split out into a new externally visible function, as the IOMMUv2
code needs this functionality, too.
Signed-off-by: NLucas Stach <l.stach@pengutronix.de>
上级 e07c0db5
......@@ -1437,11 +1437,30 @@ static int etnaviv_gpu_clk_disable(struct etnaviv_gpu *gpu)
return 0;
}
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) {
unsigned long timeout;
/* Replace the last WAIT with END */
etnaviv_buffer_end(gpu);
......@@ -1450,22 +1469,7 @@ static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu)
* 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);
......
......@@ -214,6 +214,7 @@ struct etnaviv_cmdbuf *etnaviv_gpu_cmdbuf_new(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;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册