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This pull request brings in a build fix for arm64 with bcm2835

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enabled, and fixes the driver in the presence of -EPROBE_DEFER.
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Merge tag 'tags/bcm2835-drivers-next-2019-03-12' into soc/fixes

This pull request brings in a build fix for arm64 with bcm2835
enabled, and fixes the driver in the presence of -EPROBE_DEFER.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Florian Fainelli 2019-03-18 10:31:24 -07:00
commit 4823a031f0
2 changed files with 43 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/Kconfig.platforms
View File

@ -27,6 +27,7 @@ config ARCH_BCM2835
bool "Broadcom BCM2835 family"
select TIMER_OF
select GPIOLIB
select MFD_CORE
select PINCTRL
select PINCTRL_BCM2835
select ARM_AMBA

49
drivers/soc/bcm/bcm2835-power.c
View File

@ -150,7 +150,12 @@ struct bcm2835_power {
static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
{
u64 start = ktime_get_ns();
u64 start;
if (!reg)
return 0;
start = ktime_get_ns();
/* Enable the module's async AXI bridges. */
ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
@ -165,7 +170,12 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
{
u64 start = ktime_get_ns();
u64 start;
if (!reg)
return 0;
start = ktime_get_ns();
/* Enable the module's async AXI bridges. */
ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
@ -475,7 +485,7 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
}
}
static void
static int
bcm2835_init_power_domain(struct bcm2835_power *power,
int pd_xlate_index, const char *name)
{
@ -483,6 +493,17 @@ bcm2835_init_power_domain(struct bcm2835_power *power,
struct bcm2835_power_domain *dom = &power->domains[pd_xlate_index];
dom->clk = devm_clk_get(dev->parent, name);
if (IS_ERR(dom->clk)) {
int ret = PTR_ERR(dom->clk);
if (ret == -EPROBE_DEFER)
return ret;
/* Some domains don't have a clk, so make sure that we
* don't deref an error pointer later.
*/
dom->clk = NULL;
}
dom->base.name = name;
dom->base.power_on = bcm2835_power_pd_power_on;
@ -495,6 +516,8 @@ bcm2835_init_power_domain(struct bcm2835_power *power,
pm_genpd_init(&dom->base, NULL, true);
power->pd_xlate.domains[pd_xlate_index] = &dom->base;
return 0;
}
/** bcm2835_reset_reset - Resets a block that has a reset line in the
@ -592,7 +615,7 @@ static int bcm2835_power_probe(struct platform_device *pdev)
{ BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM0 },
{ BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM1 },
};
int ret, i;
int ret = 0, i;
u32 id;
power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL);
@ -619,8 +642,11 @@ static int bcm2835_power_probe(struct platform_device *pdev)
power->pd_xlate.num_domains = ARRAY_SIZE(power_domain_names);
for (i = 0; i < ARRAY_SIZE(power_domain_names); i++)
bcm2835_init_power_domain(power, i, power_domain_names[i]);
for (i = 0; i < ARRAY_SIZE(power_domain_names); i++) {
ret = bcm2835_init_power_domain(power, i, power_domain_names[i]);
if (ret)
goto fail;
}
for (i = 0; i < ARRAY_SIZE(domain_deps); i++) {
pm_genpd_add_subdomain(&power->domains[domain_deps[i].parent].base,
@ -634,12 +660,21 @@ static int bcm2835_power_probe(struct platform_device *pdev)
ret = devm_reset_controller_register(dev, &power->reset);
if (ret)
return ret;
goto fail;
of_genpd_add_provider_onecell(dev->parent->of_node, &power->pd_xlate);
dev_info(dev, "Broadcom BCM2835 power domains driver");
return 0;
fail:
for (i = 0; i < ARRAY_SIZE(power_domain_names); i++) {
struct generic_pm_domain *dom = &power->domains[i].base;
if (dom->name)
pm_genpd_remove(dom);
}
return ret;
}
static int bcm2835_power_remove(struct platform_device *pdev)