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Message-Id: <20241018-sc8280xp-pwrseq-v6-2-8da8310d9564@linaro.org>
Date: Fri, 18 Oct 2024 14:49:12 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Bartosz Golaszewski <brgl@...ev.pl>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Johan Hovold <johan+linaro@...nel.org>, Kalle Valo <kvalo@...nel.org>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
Abel Vesa <abel.vesa@...aro.org>, Manivannan Sadhasivam <mani@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH v6 2/6] power: sequencing: qcom-wcn: improve support for
wcn6855
From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
WCN6855 (also known as QCA6490) is similar to the already supported
QCA6390 but takes in two more supplies so add a new vregs list for it.
On sm8450-hdk it also requires a short assert of the xo-clk pin so add
handling for it in a dedicated unit.
As we now have a separate set of targets for this variant, store the
pointer to the targets struct associated with a model in the device
match data.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
drivers/power/sequencing/pwrseq-qcom-wcn.c | 101 ++++++++++++++++++++++++++++-
1 file changed, 98 insertions(+), 3 deletions(-)
diff --git a/drivers/power/sequencing/pwrseq-qcom-wcn.c b/drivers/power/sequencing/pwrseq-qcom-wcn.c
index 4fa129877d7e..682a9beac69e 100644
--- a/drivers/power/sequencing/pwrseq-qcom-wcn.c
+++ b/drivers/power/sequencing/pwrseq-qcom-wcn.c
@@ -22,6 +22,7 @@ struct pwrseq_qcom_wcn_pdata {
size_t num_vregs;
unsigned int pwup_delay_ms;
unsigned int gpio_enable_delay_ms;
+ const struct pwrseq_target_data **targets;
};
struct pwrseq_qcom_wcn_ctx {
@@ -31,6 +32,7 @@ struct pwrseq_qcom_wcn_ctx {
struct regulator_bulk_data *regs;
struct gpio_desc *bt_gpio;
struct gpio_desc *wlan_gpio;
+ struct gpio_desc *xo_clk_gpio;
struct clk *clk;
unsigned long last_gpio_enable_jf;
};
@@ -98,6 +100,33 @@ static const struct pwrseq_unit_data *pwrseq_qcom_wcn_unit_deps[] = {
NULL
};
+static int pwrseq_qcom_wcn6855_clk_assert(struct pwrseq_device *pwrseq)
+{
+ struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq);
+
+ if (!ctx->xo_clk_gpio)
+ return 0;
+
+ msleep(1);
+
+ gpiod_set_value_cansleep(ctx->xo_clk_gpio, 1);
+ usleep_range(100, 200);
+
+ return 0;
+}
+
+static const struct pwrseq_unit_data pwrseq_qcom_wcn6855_xo_clk_assert = {
+ .name = "xo-clk-assert",
+ .enable = pwrseq_qcom_wcn6855_clk_assert,
+};
+
+static const struct pwrseq_unit_data *pwrseq_qcom_wcn6855_unit_deps[] = {
+ &pwrseq_qcom_wcn_vregs_unit_data,
+ &pwrseq_qcom_wcn_clk_unit_data,
+ &pwrseq_qcom_wcn6855_xo_clk_assert,
+ NULL
+};
+
static int pwrseq_qcom_wcn_bt_enable(struct pwrseq_device *pwrseq)
{
struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq);
@@ -125,6 +154,13 @@ static const struct pwrseq_unit_data pwrseq_qcom_wcn_bt_unit_data = {
.disable = pwrseq_qcom_wcn_bt_disable,
};
+static const struct pwrseq_unit_data pwrseq_qcom_wcn6855_bt_unit_data = {
+ .name = "wlan-enable",
+ .deps = pwrseq_qcom_wcn6855_unit_deps,
+ .enable = pwrseq_qcom_wcn_bt_enable,
+ .disable = pwrseq_qcom_wcn_bt_disable,
+};
+
static int pwrseq_qcom_wcn_wlan_enable(struct pwrseq_device *pwrseq)
{
struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq);
@@ -152,6 +188,13 @@ static const struct pwrseq_unit_data pwrseq_qcom_wcn_wlan_unit_data = {
.disable = pwrseq_qcom_wcn_wlan_disable,
};
+static const struct pwrseq_unit_data pwrseq_qcom_wcn6855_wlan_unit_data = {
+ .name = "wlan-enable",
+ .deps = pwrseq_qcom_wcn6855_unit_deps,
+ .enable = pwrseq_qcom_wcn_wlan_enable,
+ .disable = pwrseq_qcom_wcn_wlan_disable,
+};
+
static int pwrseq_qcom_wcn_pwup_delay(struct pwrseq_device *pwrseq)
{
struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq);
@@ -162,6 +205,18 @@ static int pwrseq_qcom_wcn_pwup_delay(struct pwrseq_device *pwrseq)
return 0;
}
+static int pwrseq_qcom_wcn6855_xo_clk_deassert(struct pwrseq_device *pwrseq)
+{
+ struct pwrseq_qcom_wcn_ctx *ctx = pwrseq_device_get_drvdata(pwrseq);
+
+ if (ctx->xo_clk_gpio) {
+ usleep_range(2000, 5000);
+ gpiod_set_value_cansleep(ctx->xo_clk_gpio, 0);
+ }
+
+ return pwrseq_qcom_wcn_pwup_delay(pwrseq);
+}
+
static const struct pwrseq_target_data pwrseq_qcom_wcn_bt_target_data = {
.name = "bluetooth",
.unit = &pwrseq_qcom_wcn_bt_unit_data,
@@ -174,12 +229,30 @@ static const struct pwrseq_target_data pwrseq_qcom_wcn_wlan_target_data = {
.post_enable = pwrseq_qcom_wcn_pwup_delay,
};
+static const struct pwrseq_target_data pwrseq_qcom_wcn6855_bt_target_data = {
+ .name = "bluetooth",
+ .unit = &pwrseq_qcom_wcn6855_bt_unit_data,
+ .post_enable = pwrseq_qcom_wcn6855_xo_clk_deassert,
+};
+
+static const struct pwrseq_target_data pwrseq_qcom_wcn6855_wlan_target_data = {
+ .name = "wlan",
+ .unit = &pwrseq_qcom_wcn6855_wlan_unit_data,
+ .post_enable = pwrseq_qcom_wcn6855_xo_clk_deassert,
+};
+
static const struct pwrseq_target_data *pwrseq_qcom_wcn_targets[] = {
&pwrseq_qcom_wcn_bt_target_data,
&pwrseq_qcom_wcn_wlan_target_data,
NULL
};
+static const struct pwrseq_target_data *pwrseq_qcom_wcn6855_targets[] = {
+ &pwrseq_qcom_wcn6855_bt_target_data,
+ &pwrseq_qcom_wcn6855_wlan_target_data,
+ NULL
+};
+
static const char *const pwrseq_qca6390_vregs[] = {
"vddio",
"vddaon",
@@ -196,13 +269,28 @@ static const struct pwrseq_qcom_wcn_pdata pwrseq_qca6390_of_data = {
.num_vregs = ARRAY_SIZE(pwrseq_qca6390_vregs),
.pwup_delay_ms = 60,
.gpio_enable_delay_ms = 100,
+ .targets = pwrseq_qcom_wcn_targets,
+};
+
+static const char *const pwrseq_wcn6855_vregs[] = {
+ "vddio",
+ "vddaon",
+ "vddpmu",
+ "vddpmumx",
+ "vddpmucx",
+ "vddrfa0p95",
+ "vddrfa1p3",
+ "vddrfa1p9",
+ "vddpcie1p3",
+ "vddpcie1p9",
};
static const struct pwrseq_qcom_wcn_pdata pwrseq_wcn6855_of_data = {
- .vregs = pwrseq_qca6390_vregs,
- .num_vregs = ARRAY_SIZE(pwrseq_qca6390_vregs),
+ .vregs = pwrseq_wcn6855_vregs,
+ .num_vregs = ARRAY_SIZE(pwrseq_wcn6855_vregs),
.pwup_delay_ms = 50,
.gpio_enable_delay_ms = 5,
+ .targets = pwrseq_qcom_wcn6855_targets,
};
static const char *const pwrseq_wcn7850_vregs[] = {
@@ -219,6 +307,7 @@ static const struct pwrseq_qcom_wcn_pdata pwrseq_wcn7850_of_data = {
.vregs = pwrseq_wcn7850_vregs,
.num_vregs = ARRAY_SIZE(pwrseq_wcn7850_vregs),
.pwup_delay_ms = 50,
+ .targets = pwrseq_qcom_wcn_targets,
};
static int pwrseq_qcom_wcn_match(struct pwrseq_device *pwrseq,
@@ -295,6 +384,12 @@ static int pwrseq_qcom_wcn_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(ctx->wlan_gpio),
"Failed to get the WLAN enable GPIO\n");
+ ctx->xo_clk_gpio = devm_gpiod_get_optional(dev, "xo-clk",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->xo_clk_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->xo_clk_gpio),
+ "Failed to get the XO_CLK GPIO\n");
+
/*
* Set direction to output but keep the current value in order to not
* disable the WLAN module accidentally if it's already powered on.
@@ -313,7 +408,7 @@ static int pwrseq_qcom_wcn_probe(struct platform_device *pdev)
config.owner = THIS_MODULE;
config.drvdata = ctx;
config.match = pwrseq_qcom_wcn_match;
- config.targets = pwrseq_qcom_wcn_targets;
+ config.targets = ctx->pdata->targets;
ctx->pwrseq = devm_pwrseq_device_register(dev, &config);
if (IS_ERR(ctx->pwrseq))
--
2.43.0
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