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-rw-r--r--drivers/remoteproc/qcom_wcnss.c109
1 files changed, 93 insertions, 16 deletions
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index e2573f79a137..f95854255c70 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -17,6 +17,8 @@
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
#include <linux/qcom_scm.h>
#include <linux/regulator/consumer.h>
#include <linux/remoteproc.h>
@@ -51,12 +53,15 @@
#define WCNSS_PMU_XO_MODE_19p2 0
#define WCNSS_PMU_XO_MODE_48 3
+#define WCNSS_MAX_PDS 2
+
struct wcnss_data {
size_t pmu_offset;
size_t spare_offset;
+ const char *pd_names[WCNSS_MAX_PDS];
const struct wcnss_vreg_info *vregs;
- size_t num_vregs;
+ size_t num_vregs, num_pd_vregs;
};
struct qcom_wcnss {
@@ -80,6 +85,8 @@ struct qcom_wcnss {
struct mutex iris_lock;
struct qcom_iris *iris;
+ struct device *pds[WCNSS_MAX_PDS];
+ size_t num_pds;
struct regulator_bulk_data *vregs;
size_t num_vregs;
@@ -111,24 +118,28 @@ static const struct wcnss_data pronto_v1_data = {
.pmu_offset = 0x1004,
.spare_offset = 0x1088,
+ .pd_names = { "mx", "cx" },
.vregs = (struct wcnss_vreg_info[]) {
{ "vddmx", 950000, 1150000, 0 },
{ "vddcx", .super_turbo = true},
{ "vddpx", 1800000, 1800000, 0 },
},
- .num_vregs = 3,
+ .num_pd_vregs = 2,
+ .num_vregs = 1,
};
static const struct wcnss_data pronto_v2_data = {
.pmu_offset = 0x1004,
.spare_offset = 0x1088,
+ .pd_names = { "mx", "cx" },
.vregs = (struct wcnss_vreg_info[]) {
{ "vddmx", 1287500, 1287500, 0 },
{ "vddcx", .super_turbo = true },
{ "vddpx", 1800000, 1800000, 0 },
},
- .num_vregs = 3,
+ .num_pd_vregs = 2,
+ .num_vregs = 1,
};
void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss,
@@ -219,7 +230,7 @@ static void wcnss_configure_iris(struct qcom_wcnss *wcnss)
static int wcnss_start(struct rproc *rproc)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
- int ret;
+ int ret, i;
mutex_lock(&wcnss->iris_lock);
if (!wcnss->iris) {
@@ -228,9 +239,18 @@ static int wcnss_start(struct rproc *rproc)
goto release_iris_lock;
}
+ for (i = 0; i < wcnss->num_pds; i++) {
+ dev_pm_genpd_set_performance_state(wcnss->pds[i], INT_MAX);
+ ret = pm_runtime_get_sync(wcnss->pds[i]);
+ if (ret < 0) {
+ pm_runtime_put_noidle(wcnss->pds[i]);
+ goto disable_pds;
+ }
+ }
+
ret = regulator_bulk_enable(wcnss->num_vregs, wcnss->vregs);
if (ret)
- goto release_iris_lock;
+ goto disable_pds;
ret = qcom_iris_enable(wcnss->iris);
if (ret)
@@ -262,6 +282,11 @@ disable_iris:
qcom_iris_disable(wcnss->iris);
disable_regulators:
regulator_bulk_disable(wcnss->num_vregs, wcnss->vregs);
+disable_pds:
+ for (i--; i >= 0; i--) {
+ pm_runtime_put(wcnss->pds[i]);
+ dev_pm_genpd_set_performance_state(wcnss->pds[i], 0);
+ }
release_iris_lock:
mutex_unlock(&wcnss->iris_lock);
@@ -371,14 +396,54 @@ static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev)
return IRQ_HANDLED;
}
+static int wcnss_init_pds(struct qcom_wcnss *wcnss,
+ const char * const pd_names[WCNSS_MAX_PDS])
+{
+ int i, ret;
+
+ for (i = 0; i < WCNSS_MAX_PDS; i++) {
+ if (!pd_names[i])
+ break;
+
+ wcnss->pds[i] = dev_pm_domain_attach_by_name(wcnss->dev, pd_names[i]);
+ if (IS_ERR_OR_NULL(wcnss->pds[i])) {
+ ret = PTR_ERR(wcnss->pds[i]) ? : -ENODATA;
+ for (i--; i >= 0; i--)
+ dev_pm_domain_detach(wcnss->pds[i], false);
+ return ret;
+ }
+ }
+ wcnss->num_pds = i;
+
+ return 0;
+}
+
+static void wcnss_release_pds(struct qcom_wcnss *wcnss)
+{
+ int i;
+
+ for (i = 0; i < wcnss->num_pds; i++)
+ dev_pm_domain_detach(wcnss->pds[i], false);
+}
+
static int wcnss_init_regulators(struct qcom_wcnss *wcnss,
const struct wcnss_vreg_info *info,
- int num_vregs)
+ int num_vregs, int num_pd_vregs)
{
struct regulator_bulk_data *bulk;
int ret;
int i;
+ /*
+ * If attaching the power domains suceeded we can skip requesting
+ * the regulators for the power domains. For old device trees we need to
+ * reserve extra space to manage them through the regulator interface.
+ */
+ if (wcnss->num_pds)
+ info += num_pd_vregs;
+ else
+ num_vregs += num_pd_vregs;
+
bulk = devm_kcalloc(wcnss->dev,
num_vregs, sizeof(struct regulator_bulk_data),
GFP_KERNEL);
@@ -514,33 +579,42 @@ static int wcnss_probe(struct platform_device *pdev)
wcnss->pmu_cfg = mmio + data->pmu_offset;
wcnss->spare_out = mmio + data->spare_offset;
- ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs);
- if (ret)
+ /*
+ * We might need to fallback to regulators instead of power domains
+ * for old device trees. Don't report an error in that case.
+ */
+ ret = wcnss_init_pds(wcnss, data->pd_names);
+ if (ret && (ret != -ENODATA || !data->num_pd_vregs))
goto free_rproc;
+ ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs,
+ data->num_pd_vregs);
+ if (ret)
+ goto detach_pds;
+
ret = wcnss_request_irq(wcnss, pdev, "wdog", false, wcnss_wdog_interrupt);
if (ret < 0)
- goto free_rproc;
+ goto detach_pds;
wcnss->wdog_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "fatal", false, wcnss_fatal_interrupt);
if (ret < 0)
- goto free_rproc;
+ goto detach_pds;
wcnss->fatal_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "ready", true, wcnss_ready_interrupt);
if (ret < 0)
- goto free_rproc;
+ goto detach_pds;
wcnss->ready_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "handover", true, wcnss_handover_interrupt);
if (ret < 0)
- goto free_rproc;
+ goto detach_pds;
wcnss->handover_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "stop-ack", true, wcnss_stop_ack_interrupt);
if (ret < 0)
- goto free_rproc;
+ goto detach_pds;
wcnss->stop_ack_irq = ret;
if (wcnss->stop_ack_irq) {
@@ -548,7 +622,7 @@ static int wcnss_probe(struct platform_device *pdev)
&wcnss->stop_bit);
if (IS_ERR(wcnss->state)) {
ret = PTR_ERR(wcnss->state);
- goto free_rproc;
+ goto detach_pds;
}
}
@@ -556,15 +630,17 @@ static int wcnss_probe(struct platform_device *pdev)
wcnss->sysmon = qcom_add_sysmon_subdev(rproc, "wcnss", WCNSS_SSCTL_ID);
if (IS_ERR(wcnss->sysmon)) {
ret = PTR_ERR(wcnss->sysmon);
- goto free_rproc;
+ goto detach_pds;
}
ret = rproc_add(rproc);
if (ret)
- goto free_rproc;
+ goto detach_pds;
return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+detach_pds:
+ wcnss_release_pds(wcnss);
free_rproc:
rproc_free(rproc);
@@ -582,6 +658,7 @@ static int wcnss_remove(struct platform_device *pdev)
qcom_remove_sysmon_subdev(wcnss->sysmon);
qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev);
+ wcnss_release_pds(wcnss);
rproc_free(wcnss->rproc);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 17:31:04 +0100