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Date: Tue, 17 Aug 2021 03:54:56 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Ulf Hansson <ulf.hansson@...aro.org>,
Marcel Holtmann <marcel@...tmann.org>,
Johan Hedberg <johan.hedberg@...il.com>,
Luiz Augusto von Dentz <luiz.dentz@...il.com>,
Kalle Valo <kvalo@...eaurora.org>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Stanimir Varbanov <svarbanov@...sol.com>
Cc: linux-arm-msm@...r.kernel.org, linux-mmc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org
Subject: [RFC PATCH 04/15] ath10k: add support for pwrseq sequencing
Power sequencing for Qualcomm WiFi+BT chipsets are being reworked to use
pwrseq rather than individually handling all the regulators. Add support
for pwrseq to ath10k SNOC driver.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
drivers/net/wireless/ath/ath10k/snoc.c | 63 ++++++++++++++++++++------
drivers/net/wireless/ath/ath10k/snoc.h | 2 +
2 files changed, 52 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index ea00fbb15601..870ed28d01a6 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -14,6 +14,7 @@
#include <linux/regulator/consumer.h>
#include <linux/of_address.h>
#include <linux/iommu.h>
+#include <linux/pwrseq/consumer.h>
#include "ce.h"
#include "coredump.h"
@@ -42,7 +43,6 @@ static char *const ce_name[] = {
};
static const char * const ath10k_regulators[] = {
- "vdd-0.8-cx-mx",
"vdd-1.8-xo",
"vdd-1.3-rfa",
"vdd-3.3-ch0",
@@ -1010,10 +1010,17 @@ static int ath10k_hw_power_on(struct ath10k *ar)
ath10k_dbg(ar, ATH10K_DBG_SNOC, "soc power on\n");
- ret = regulator_bulk_enable(ar_snoc->num_vregs, ar_snoc->vregs);
+ if (ar_snoc->pwrseq)
+ ret = pwrseq_full_power_on(ar_snoc->pwrseq);
+ else
+ ret = regulator_bulk_enable(ar_snoc->num_vregs, ar_snoc->vregs);
if (ret)
return ret;
+ ret = regulator_enable(ar_snoc->vreg_cx_mx);
+ if (ret)
+ goto vreg_bulk_off;
+
ret = clk_bulk_prepare_enable(ar_snoc->num_clks, ar_snoc->clks);
if (ret)
goto vreg_off;
@@ -1021,7 +1028,13 @@ static int ath10k_hw_power_on(struct ath10k *ar)
return ret;
vreg_off:
- regulator_bulk_disable(ar_snoc->num_vregs, ar_snoc->vregs);
+ regulator_disable(ar_snoc->vreg_cx_mx);
+vreg_bulk_off:
+ if (ar_snoc->pwrseq)
+ pwrseq_power_off(ar_snoc->pwrseq);
+ else
+ regulator_bulk_disable(ar_snoc->num_vregs, ar_snoc->vregs);
+
return ret;
}
@@ -1033,6 +1046,14 @@ static int ath10k_hw_power_off(struct ath10k *ar)
clk_bulk_disable_unprepare(ar_snoc->num_clks, ar_snoc->clks);
+ regulator_disable(ar_snoc->vreg_cx_mx);
+
+ if (ar_snoc->pwrseq) {
+ pwrseq_power_off(ar_snoc->pwrseq);
+
+ return 0;
+ }
+
return regulator_bulk_disable(ar_snoc->num_vregs, ar_snoc->vregs);
}
@@ -1691,20 +1712,36 @@ static int ath10k_snoc_probe(struct platform_device *pdev)
goto err_release_resource;
}
- ar_snoc->num_vregs = ARRAY_SIZE(ath10k_regulators);
- ar_snoc->vregs = devm_kcalloc(&pdev->dev, ar_snoc->num_vregs,
- sizeof(*ar_snoc->vregs), GFP_KERNEL);
- if (!ar_snoc->vregs) {
- ret = -ENOMEM;
+ ar_snoc->pwrseq = devm_pwrseq_get_optional(&pdev->dev, "wifi");
+ if (IS_ERR(ar_snoc->pwrseq)) {
+ ret = PTR_ERR(ar_snoc->pwrseq);
+ if (ret != -EPROBE_DEFER)
+ ath10k_warn(ar, "failed to acquire pwrseq: %d\n", ret);
goto err_free_irq;
}
- for (i = 0; i < ar_snoc->num_vregs; i++)
- ar_snoc->vregs[i].supply = ath10k_regulators[i];
- ret = devm_regulator_bulk_get(&pdev->dev, ar_snoc->num_vregs,
- ar_snoc->vregs);
- if (ret < 0)
+ if (!ar_snoc->pwrseq) {
+ ar_snoc->num_vregs = ARRAY_SIZE(ath10k_regulators);
+ ar_snoc->vregs = devm_kcalloc(&pdev->dev, ar_snoc->num_vregs,
+ sizeof(*ar_snoc->vregs), GFP_KERNEL);
+ if (!ar_snoc->vregs) {
+ ret = -ENOMEM;
+ goto err_free_irq;
+ }
+ for (i = 0; i < ar_snoc->num_vregs; i++)
+ ar_snoc->vregs[i].supply = ath10k_regulators[i];
+
+ ret = devm_regulator_bulk_get(&pdev->dev, ar_snoc->num_vregs,
+ ar_snoc->vregs);
+ if (ret < 0)
+ goto err_free_irq;
+ }
+
+ ar_snoc->vreg_cx_mx = devm_regulator_get(&pdev->dev, "vdd-0.8-cx-mx");
+ if (IS_ERR(ar_snoc->vreg_cx_mx)) {
+ ret = PTR_ERR(ar_snoc->vreg_cx_mx);
goto err_free_irq;
+ }
ar_snoc->num_clks = ARRAY_SIZE(ath10k_clocks);
ar_snoc->clks = devm_kcalloc(&pdev->dev, ar_snoc->num_clks,
diff --git a/drivers/net/wireless/ath/ath10k/snoc.h b/drivers/net/wireless/ath/ath10k/snoc.h
index 5095d1893681..16cfd72180cd 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.h
+++ b/drivers/net/wireless/ath/ath10k/snoc.h
@@ -72,8 +72,10 @@ struct ath10k_snoc {
struct timer_list rx_post_retry;
struct regulator_bulk_data *vregs;
size_t num_vregs;
+ struct regulator *vreg_cx_mx;
struct clk_bulk_data *clks;
size_t num_clks;
+ struct pwrseq *pwrseq;
struct ath10k_qmi *qmi;
unsigned long flags;
bool xo_cal_supported;
--
2.30.2
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