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drm/tegra: Fix genpd support for Linux v6.13

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In Linux v6.13, commit d6caca30a548 ("OPP: Drop redundant
*_opp_attach|detach_genpd()") removed devm_pm_opp_attach_genpd(). This
has been replaced by devm_pm_domain_attach_list(). Use conftest to
detect the presence of devm_pm_domain_attach_list() and update the Tegra
DRM driver accordingly.

Bug 4991705

Change-Id: I5a3bd258d3fce5b09fd4ba84adad166e4cf47cfb
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3261693
(cherry picked from commit 4c08d4e516a89751afc8410553ccebff983e29d0)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3499749
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Tested-by: Brad Griffis <bgriffis@nvidia.com>
This commit is contained in:
Jon Hunter
2024-09-11 13:32:50 +01:00
committed by mobile promotions
parent c07615fe6a
commit 0980dbb86e
3 changed files with 32 additions and 0 deletions
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18
drivers/gpu/drm/tegra/gr3d.c
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@@ -49,6 +49,9 @@ struct gr3d {
unsigned int nclocks;
struct reset_control_bulk_data resets[RST_GR3D_MAX];
unsigned int nresets;
#if defined(NV_DEVM_PM_DOMAIN_ATTACH_LIST_PRESENT) /* Linux v6.13 */
struct dev_pm_domain_list *pd_list;
#endif
DECLARE_BITMAP(addr_regs, GR3D_NUM_REGS);
};
@@ -372,13 +375,21 @@ static int gr3d_power_up_legacy_domain(struct device *dev, const char *name,
return 0;
}
#if !defined(NV_DEVM_PM_DOMAIN_ATTACH_LIST_PRESENT) /* Linux v6.13 */
static void gr3d_del_link(void *link)
{
device_link_del(link);
}
#endif
static int gr3d_init_power(struct device *dev, struct gr3d *gr3d)
{
#if defined(NV_DEVM_PM_DOMAIN_ATTACH_LIST_PRESENT) /* Linux v6.13 */
struct dev_pm_domain_attach_data pd_data = {
.pd_names = (const char *[]) { "3d0", "3d1" },
.num_pd_names = 2,
};
#else
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 17, 0)
static const char * const opp_genpd_names[] = { "3d0", "3d1", NULL };
#else
@@ -388,6 +399,7 @@ static int gr3d_init_power(struct device *dev, struct gr3d *gr3d)
struct device **opp_virt_devs, *pd_dev;
struct device_link *link;
unsigned int i;
#endif
int err;
err = of_count_phandle_with_args(dev->of_node, "power-domains",
@@ -421,6 +433,11 @@ static int gr3d_init_power(struct device *dev, struct gr3d *gr3d)
if (dev->pm_domain)
return 0;
#if defined(NV_DEVM_PM_DOMAIN_ATTACH_LIST_PRESENT) /* Linux v6.13 */
err = devm_pm_domain_attach_list(dev, &pd_data, &gr3d->pd_list);
if (err < 0)
return err;
#else
err = devm_pm_opp_attach_genpd(dev, opp_genpd_names, &opp_virt_devs);
if (err)
return err;
@@ -443,6 +460,7 @@ static int gr3d_init_power(struct device *dev, struct gr3d *gr3d)
if (err)
return err;
}
#endif
return 0;
}