Applied to drm-misc-fixes
On 24.10.2023 18:53, Stanislaw Gruszka wrote:
> From: Jacek Lawrynowicz <jacek.lawrynow...@linux.intel.com>
>
> IP reset has to followed by ivpu_pll_disable() to properly enter
> reset state.
>
> Fixes: 828d63042aec ("accel/ivpu: Don't enter d0i3 during FLR")
> Cc: sta...@vger.kernel.org
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynow...@linux.intel.com>
> Reviewed-by: Stanislaw Gruszka <stanislaw.grus...@linux.intel.com>
> Signed-off-by: Stanislaw Gruszka <stanislaw.grus...@linux.intel.com>
> ---
> v2: use ivpu_hw_37xx_ip_reset() in ivpu_hw_37xx_power_up()
>
> drivers/accel/ivpu/ivpu_hw_37xx.c | 23 ++++++++++++++++++++---
> drivers/accel/ivpu/ivpu_hw_40xx.c | 23 ++++++++++++++++++++---
> 2 files changed, 40 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/accel/ivpu/ivpu_hw_37xx.c
> b/drivers/accel/ivpu/ivpu_hw_37xx.c
> index 5c0246b9e522..56b53833ede2 100644
> --- a/drivers/accel/ivpu/ivpu_hw_37xx.c
> +++ b/drivers/accel/ivpu/ivpu_hw_37xx.c
> @@ -598,7 +598,7 @@ static int ivpu_hw_37xx_info_init(struct ivpu_device
> *vdev)
> return 0;
> }
>
> -static int ivpu_hw_37xx_reset(struct ivpu_device *vdev)
> +static int ivpu_hw_37xx_ip_reset(struct ivpu_device *vdev)
> {
> int ret;
> u32 val;
> @@ -623,6 +623,23 @@ static int ivpu_hw_37xx_reset(struct ivpu_device *vdev)
> return ret;
> }
>
> +static int ivpu_hw_37xx_reset(struct ivpu_device *vdev)
> +{
> + int ret = 0;
> +
> + if (ivpu_hw_37xx_ip_reset(vdev)) {
> + ivpu_err(vdev, "Failed to reset VPU IP\n");
> + ret = -EIO;
> + }
> +
> + if (ivpu_pll_disable(vdev)) {
> + ivpu_err(vdev, "Failed to disable PLL\n");
> + ret = -EIO;
> + }
> +
> + return ret;
> +}
> +
> static int ivpu_hw_37xx_d0i3_enable(struct ivpu_device *vdev)
> {
> int ret;
> @@ -651,7 +668,7 @@ static int ivpu_hw_37xx_power_up(struct ivpu_device *vdev)
> {
> int ret;
>
> - ret = ivpu_hw_37xx_reset(vdev);
> + ret = ivpu_hw_37xx_ip_reset(vdev);
> if (ret)
> ivpu_warn(vdev, "Failed to reset HW: %d\n", ret);
>
> @@ -722,7 +739,7 @@ static int ivpu_hw_37xx_power_down(struct ivpu_device
> *vdev)
> {
> int ret = 0;
>
> - if (!ivpu_hw_37xx_is_idle(vdev) && ivpu_hw_37xx_reset(vdev))
> + if (!ivpu_hw_37xx_is_idle(vdev) && ivpu_hw_37xx_ip_reset(vdev))
> ivpu_err(vdev, "Failed to reset the VPU\n");
>
> if (ivpu_pll_disable(vdev)) {
> diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c
> b/drivers/accel/ivpu/ivpu_hw_40xx.c
> index e691c49c9841..b25d02dc541b 100644
> --- a/drivers/accel/ivpu/ivpu_hw_40xx.c
> +++ b/drivers/accel/ivpu/ivpu_hw_40xx.c
> @@ -742,7 +742,7 @@ static int ivpu_hw_40xx_info_init(struct ivpu_device
> *vdev)
> return 0;
> }
>
> -static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
> +static int ivpu_hw_40xx_ip_reset(struct ivpu_device *vdev)
> {
> int ret;
> u32 val;
> @@ -764,6 +764,23 @@ static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
> return ret;
> }
>
> +static int ivpu_hw_40xx_reset(struct ivpu_device *vdev)
> +{
> + int ret = 0;
> +
> + if (ivpu_hw_40xx_ip_reset(vdev)) {
> + ivpu_err(vdev, "Failed to reset VPU IP\n");
> + ret = -EIO;
> + }
> +
> + if (ivpu_pll_disable(vdev)) {
> + ivpu_err(vdev, "Failed to disable PLL\n");
> + ret = -EIO;
> + }
> +
> + return ret;
> +}
> +
> static int ivpu_hw_40xx_d0i3_enable(struct ivpu_device *vdev)
> {
> int ret;
> @@ -824,7 +841,7 @@ static int ivpu_hw_40xx_power_up(struct ivpu_device *vdev)
> {
> int ret;
>
> - ret = ivpu_hw_40xx_reset(vdev);
> + ret = ivpu_hw_40xx_ip_reset(vdev);
> if (ret) {
> ivpu_err(vdev, "Failed to reset HW: %d\n", ret);
> return ret;
> @@ -902,7 +919,7 @@ static int ivpu_hw_40xx_power_down(struct ivpu_device
> *vdev)
> {
> int ret = 0;
>
> - if (!ivpu_hw_40xx_is_idle(vdev) && ivpu_hw_40xx_reset(vdev))
> + if (!ivpu_hw_40xx_is_idle(vdev) && ivpu_hw_40xx_ip_reset(vdev))
> ivpu_warn(vdev, "Failed to reset the VPU\n");
>
> if (ivpu_pll_disable(vdev)) {
