* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
-
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/reset.h>
-#include <linux/regulator/consumer.h>
-#include <linux/iommu.h>
-#include <soc/tegra/fuse.h>
-#include <soc/tegra/pmc.h>
-
-#include "nouveau_drm.h"
#include "nouveau_platform.h"
-static int nouveau_platform_power_up(struct nouveau_platform_gpu *gpu)
-{
- int err;
-
- err = regulator_enable(gpu->vdd);
- if (err)
- goto err_power;
-
- err = clk_prepare_enable(gpu->clk);
- if (err)
- goto err_clk;
- err = clk_prepare_enable(gpu->clk_pwr);
- if (err)
- goto err_clk_pwr;
- clk_set_rate(gpu->clk_pwr, 204000000);
- udelay(10);
-
- reset_control_assert(gpu->rst);
- udelay(10);
-
- err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D);
- if (err)
- goto err_clamp;
- udelay(10);
-
- reset_control_deassert(gpu->rst);
- udelay(10);
-
- return 0;
-
-err_clamp:
- clk_disable_unprepare(gpu->clk_pwr);
-err_clk_pwr:
- clk_disable_unprepare(gpu->clk);
-err_clk:
- regulator_disable(gpu->vdd);
-err_power:
- return err;
-}
-
-static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu)
-{
- int err;
-
- reset_control_assert(gpu->rst);
- udelay(10);
-
- clk_disable_unprepare(gpu->clk_pwr);
- clk_disable_unprepare(gpu->clk);
- udelay(10);
-
- err = regulator_disable(gpu->vdd);
- if (err)
- return err;
-
- return 0;
-}
-
-#if IS_ENABLED(CONFIG_IOMMU_API)
-
-static void nouveau_platform_probe_iommu(struct device *dev,
- struct nouveau_platform_gpu *gpu)
-{
- int err;
- unsigned long pgsize_bitmap;
-
- mutex_init(&gpu->iommu.mutex);
-
- if (iommu_present(&platform_bus_type)) {
- gpu->iommu.domain = iommu_domain_alloc(&platform_bus_type);
- if (IS_ERR(gpu->iommu.domain))
- goto error;
-
- /*
- * A IOMMU is only usable if it supports page sizes smaller
- * or equal to the system's PAGE_SIZE, with a preference if
- * both are equal.
- */
- pgsize_bitmap = gpu->iommu.domain->ops->pgsize_bitmap;
- if (pgsize_bitmap & PAGE_SIZE) {
- gpu->iommu.pgshift = PAGE_SHIFT;
- } else {
- gpu->iommu.pgshift = fls(pgsize_bitmap & ~PAGE_MASK);
- if (gpu->iommu.pgshift == 0) {
- dev_warn(dev, "unsupported IOMMU page size\n");
- goto free_domain;
- }
- gpu->iommu.pgshift -= 1;
- }
-
- err = iommu_attach_device(gpu->iommu.domain, dev);
- if (err)
- goto free_domain;
-
- err = nvkm_mm_init(&gpu->iommu._mm, 0,
- (1ULL << 40) >> gpu->iommu.pgshift, 1);
- if (err)
- goto detach_device;
-
- gpu->iommu.mm = &gpu->iommu._mm;
- }
-
- return;
-
-detach_device:
- iommu_detach_device(gpu->iommu.domain, dev);
-
-free_domain:
- iommu_domain_free(gpu->iommu.domain);
-
-error:
- gpu->iommu.domain = NULL;
- gpu->iommu.pgshift = 0;
- dev_err(dev, "cannot initialize IOMMU MM\n");
-}
-
-static void nouveau_platform_remove_iommu(struct device *dev,
- struct nouveau_platform_gpu *gpu)
-{
- if (gpu->iommu.domain) {
- nvkm_mm_fini(&gpu->iommu._mm);
- iommu_detach_device(gpu->iommu.domain, dev);
- iommu_domain_free(gpu->iommu.domain);
- }
-}
-
-#else
-
-static void nouveau_platform_probe_iommu(struct device *dev,
- struct nouveau_platform_gpu *gpu)
-{
-}
-
-static void nouveau_platform_remove_iommu(struct device *dev,
- struct nouveau_platform_gpu *gpu)
-{
-}
-
-#endif
-
static int nouveau_platform_probe(struct platform_device *pdev)
{
- struct nouveau_platform_gpu *gpu;
- struct nouveau_platform_device *device;
+ struct nvkm_device *device;
struct drm_device *drm;
- int err;
-
- gpu = devm_kzalloc(&pdev->dev, sizeof(*gpu), GFP_KERNEL);
- if (!gpu)
- return -ENOMEM;
-
- gpu->vdd = devm_regulator_get(&pdev->dev, "vdd");
- if (IS_ERR(gpu->vdd))
- return PTR_ERR(gpu->vdd);
-
- gpu->rst = devm_reset_control_get(&pdev->dev, "gpu");
- if (IS_ERR(gpu->rst))
- return PTR_ERR(gpu->rst);
-
- gpu->clk = devm_clk_get(&pdev->dev, "gpu");
- if (IS_ERR(gpu->clk))
- return PTR_ERR(gpu->clk);
-
- gpu->clk_pwr = devm_clk_get(&pdev->dev, "pwr");
- if (IS_ERR(gpu->clk_pwr))
- return PTR_ERR(gpu->clk_pwr);
-
- nouveau_platform_probe_iommu(&pdev->dev, gpu);
-
- err = nouveau_platform_power_up(gpu);
- if (err)
- return err;
+ int ret;
drm = nouveau_platform_device_create(pdev, &device);
- if (IS_ERR(drm)) {
- err = PTR_ERR(drm);
- goto power_down;
- }
+ if (IS_ERR(drm))
+ return PTR_ERR(drm);
- device->gpu = gpu;
- device->gpu_speedo = tegra_sku_info.gpu_speedo_value;
-
- err = drm_dev_register(drm, 0);
- if (err < 0)
- goto err_unref;
+ ret = drm_dev_register(drm, 0);
+ if (ret < 0) {
+ drm_dev_unref(drm);
+ return ret;
+ }
return 0;
-
-err_unref:
- drm_dev_unref(drm);
-
-power_down:
- nouveau_platform_power_down(gpu);
- nouveau_platform_remove_iommu(&pdev->dev, gpu);
-
- return err;
}
static int nouveau_platform_remove(struct platform_device *pdev)
{
- struct drm_device *drm_dev = platform_get_drvdata(pdev);
- struct nouveau_drm *drm = nouveau_drm(drm_dev);
- struct nvkm_device *device = nvxx_device(&drm->device);
- struct nouveau_platform_gpu *gpu = nv_device_to_platform(device)->gpu;
- int err;
-
- nouveau_drm_device_remove(drm_dev);
-
- err = nouveau_platform_power_down(gpu);
-
- nouveau_platform_remove_iommu(&pdev->dev, gpu);
-
- return err;
+ struct drm_device *dev = platform_get_drvdata(pdev);
+ nouveau_drm_device_remove(dev);
+ return 0;
}
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id nouveau_platform_match[] = {
{ .compatible = "nvidia,gk20a" },
+ { .compatible = "nvidia,gm20b" },
{ }
};
projects / firefly-linux-kernel-4.4.55.git / blobdiff