diff options
| -rw-r--r-- | drivers/gpu/host1x/dev.c | 18 | ||||
| -rw-r--r-- | drivers/gpu/host1x/dev.h | 2 |
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 8a0d97243c9c..f05ebb14fa63 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -170,6 +170,13 @@ static int host1x_probe(struct platform_device *pdev) return err; } + host->rst = devm_reset_control_get(&pdev->dev, "host1x"); + if (IS_ERR(host->rst)) { + err = PTR_ERR(host->clk); + dev_err(&pdev->dev, "failed to get reset: %d\n", err); + return err; + } + if (iommu_present(&platform_bus_type)) { struct iommu_domain_geometry *geometry; unsigned long order; @@ -203,10 +210,16 @@ static int host1x_probe(struct platform_device *pdev) goto fail_detach_device; } + err = reset_control_deassert(host->rst); + if (err < 0) { + dev_err(&pdev->dev, "failed to deassert reset: %d\n", err); + goto fail_unprepare_disable; + } + err = host1x_syncpt_init(host); if (err) { dev_err(&pdev->dev, "failed to initialize syncpts\n"); - goto fail_unprepare_disable; + goto fail_reset_assert; } err = host1x_intr_init(host, syncpt_irq); @@ -227,6 +240,8 @@ fail_deinit_intr: host1x_intr_deinit(host); fail_deinit_syncpt: host1x_syncpt_deinit(host); +fail_reset_assert: + reset_control_assert(host->rst); fail_unprepare_disable: clk_disable_unprepare(host->clk); fail_detach_device: @@ -248,6 +263,7 @@ static int host1x_remove(struct platform_device *pdev) host1x_unregister(host); host1x_intr_deinit(host); host1x_syncpt_deinit(host); + reset_control_assert(host->rst); clk_disable_unprepare(host->clk); if (host->domain) { diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h index 561c5776cafb..229d08b6a45e 100644 --- a/drivers/gpu/host1x/dev.h +++ b/drivers/gpu/host1x/dev.h @@ -21,6 +21,7 @@ #include <linux/iommu.h> #include <linux/iova.h> #include <linux/platform_device.h> +#include <linux/reset.h> #include "cdma.h" #include "channel.h" @@ -109,6 +110,7 @@ struct host1x { struct host1x_syncpt_base *bases; struct device *dev; struct clk *clk; + struct reset_control *rst; struct iommu_domain *domain; struct iova_domain iova; |