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drm/tegra: Fixes for v5.12-rc6 

This contains a couple of fixes for various issues such as lockdep
 warnings, runtime PM references, coupled display controllers and
 misconfigured PLLs.
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Merge tag 'drm/tegra/for-5.12-rc6' of ssh://git.freedesktop.org/git/tegra/linux into drm-fixes

drm/tegra: Fixes for v5.12-rc6

This contains a couple of fixes for various issues such as lockdep
warnings, runtime PM references, coupled display controllers and
misconfigured PLLs.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210401163352.3348296-1-thierry.reding@gmail.com
This commit is contained in:
Dave Airlie 2021-04-02 04:44:28 +10:00
parent dcdb7aa452 ac097aecfe
commit a0497251f2
4 changed files with 34 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/tegra/dc.c
View File

@ -1688,6 +1688,11 @@ static void tegra_dc_commit_state(struct tegra_dc *dc,
dev_err(dc->dev,
"failed to set clock rate to %lu Hz\n",
state->pclk);
err = clk_set_rate(dc->clk, state->pclk);
if (err < 0)
dev_err(dc->dev, "failed to set clock %pC to %lu Hz: %d\n",
dc->clk, state->pclk, err);
}
DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk),
@ -1698,11 +1703,6 @@ static void tegra_dc_commit_state(struct tegra_dc *dc,
value = SHIFT_CLK_DIVIDER(state->div) | PIXEL_CLK_DIVIDER_PCD1;
tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
}
err = clk_set_rate(dc->clk, state->pclk);
if (err < 0)
dev_err(dc->dev, "failed to set clock %pC to %lu Hz: %d\n",
dc->clk, state->pclk, err);
}
static void tegra_dc_stop(struct tegra_dc *dc)
@ -2501,22 +2501,18 @@ static int tegra_dc_couple(struct tegra_dc *dc)
* POWER_CONTROL registers during CRTC enabling.
*/
if (dc->soc->coupled_pm && dc->pipe == 1) {
u32 flags = DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_CONSUMER;
struct device_link *link;
struct device *partner;
struct device *companion;
struct tegra_dc *parent;
partner = driver_find_device(dc->dev->driver, NULL, NULL,
tegra_dc_match_by_pipe);
if (!partner)
companion = driver_find_device(dc->dev->driver, NULL, (const void *)0,
tegra_dc_match_by_pipe);
if (!companion)
return -EPROBE_DEFER;
link = device_link_add(dc->dev, partner, flags);
if (!link) {
dev_err(dc->dev, "failed to link controllers\n");
return -EINVAL;
}
parent = dev_get_drvdata(companion);
dc->client.parent = &parent->client;
dev_dbg(dc->dev, "coupled to %s\n", dev_name(partner));
dev_dbg(dc->dev, "coupled to %s\n", dev_name(companion));
}
return 0;

7
drivers/gpu/drm/tegra/sor.c
View File

@ -3115,6 +3115,12 @@ static int tegra_sor_init(struct host1x_client *client)
* kernel is possible.
*/
if (sor->rst) {
err = pm_runtime_resume_and_get(sor->dev);
if (err < 0) {
dev_err(sor->dev, "failed to get runtime PM: %d\n", err);
return err;
}
err = reset_control_acquire(sor->rst);
if (err < 0) {
dev_err(sor->dev, "failed to acquire SOR reset: %d\n",
@ -3148,6 +3154,7 @@ static int tegra_sor_init(struct host1x_client *client)
}
reset_control_release(sor->rst);
pm_runtime_put(sor->dev);
}
err = clk_prepare_enable(sor->clk_safe);

10
drivers/gpu/host1x/bus.c
View File

@ -705,8 +705,9 @@ void host1x_driver_unregister(struct host1x_driver *driver)
EXPORT_SYMBOL(host1x_driver_unregister);
/**
* host1x_client_register() - register a host1x client
* __host1x_client_register() - register a host1x client
* @client: host1x client
* @key: lock class key for the client-specific mutex
*
* Registers a host1x client with each host1x controller instance. Note that
* each client will only match their parent host1x controller and will only be
@ -715,13 +716,14 @@ EXPORT_SYMBOL(host1x_driver_unregister);
* device and call host1x_device_init(), which will in turn call each client's
* &host1x_client_ops.init implementation.
*/
int host1x_client_register(struct host1x_client *client)
int __host1x_client_register(struct host1x_client *client,
struct lock_class_key *key)
{
struct host1x *host1x;
int err;
INIT_LIST_HEAD(&client->list);
mutex_init(&client->lock);
__mutex_init(&client->lock, "host1x client lock", key);
client->usecount = 0;
mutex_lock(&devices_lock);
@ -742,7 +744,7 @@ int host1x_client_register(struct host1x_client *client)
return 0;
}
EXPORT_SYMBOL(host1x_client_register);
EXPORT_SYMBOL(__host1x_client_register);
/**
* host1x_client_unregister() - unregister a host1x client

9
include/linux/host1x.h
View File

@ -320,7 +320,14 @@ static inline struct host1x_device *to_host1x_device(struct device *dev)
int host1x_device_init(struct host1x_device *device);
int host1x_device_exit(struct host1x_device *device);
int host1x_client_register(struct host1x_client *client);
int __host1x_client_register(struct host1x_client *client,
struct lock_class_key *key);
#define host1x_client_register(class) \
({ \
static struct lock_class_key __key; \
__host1x_client_register(class, &__key); \
})
int host1x_client_unregister(struct host1x_client *client);
int host1x_client_suspend(struct host1x_client *client);