Re: [PATCH v2 04/11] soc: qcom: pmic_glink: register ucsi aux device

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On 10/02/2023 17:02, Neil Armstrong wrote:
Only register UCSI on know working devices, like on the SM8450
or Sm8550 which requires UCSI to get USB mode switch events.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
  drivers/soc/qcom/pmic_glink.c | 67 ++++++++++++++++++++++++++++++++++++-------
  1 file changed, 57 insertions(+), 10 deletions(-)

diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
index bb3fb57abcc6..c7f091f4a8c1 100644
--- a/drivers/soc/qcom/pmic_glink.c
+++ b/drivers/soc/qcom/pmic_glink.c
@@ -4,6 +4,7 @@
   * Copyright (c) 2022, Linaro Ltd
   */
  #include <linux/auxiliary_bus.h>
+#include <linux/of_device.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/rpmsg.h>
@@ -11,12 +12,23 @@
  #include <linux/soc/qcom/pdr.h>
  #include <linux/soc/qcom/pmic_glink.h>
+enum {
+	PMIC_GLINK_CLIENT_BATT = 0,
+	PMIC_GLINK_CLIENT_ALTMODE,
+	PMIC_GLINK_CLIENT_UCSI,
+};
+
+#define PMIC_GLINK_CLIENT_DEFAULT	(BIT(PMIC_GLINK_CLIENT_BATT) |	\
+					 BIT(PMIC_GLINK_CLIENT_ALTMODE))
+
  struct pmic_glink {
  	struct device *dev;
  	struct pdr_handle *pdr;
struct rpmsg_endpoint *ept; + unsigned int client_mask;
+
  	struct auxiliary_device altmode_aux;
  	struct auxiliary_device ps_aux;
  	struct auxiliary_device ucsi_aux;
@@ -231,8 +243,19 @@ static struct rpmsg_driver pmic_glink_rpmsg_driver = {
  	},
  };
+/* Do not handle altmode for now on those platforms */
+static const unsigned int pmic_glink_sm8450_client_mask = BIT(PMIC_GLINK_CLIENT_BATT) |
+							  BIT(PMIC_GLINK_CLIENT_UCSI);
+
+static const struct of_device_id pmic_glink_of_client_mask[] = {
+	{ .compatible = "qcom,sm8450-pmic-glink", .data = &pmic_glink_sm8450_client_mask },
+	{ .compatible = "qcom,sm8550-pmic-glink", .data = &pmic_glink_sm8450_client_mask },
+	{}
+};
+

Squash this into pmic_glink_of_match, please. Then you can use of_device_get_match_data()

  static int pmic_glink_probe(struct platform_device *pdev)
  {
+	const struct of_device_id *match;
  	struct pdr_service *service;
  	struct pmic_glink *pg;
  	int ret;
@@ -249,12 +272,27 @@ static int pmic_glink_probe(struct platform_device *pdev)
  	mutex_init(&pg->client_lock);
  	mutex_init(&pg->state_lock);
- ret = pmic_glink_add_aux_device(pg, &pg->altmode_aux, "altmode");
-	if (ret)
-		return ret;
-	ret = pmic_glink_add_aux_device(pg, &pg->ps_aux, "power-supply");
-	if (ret)
-		goto out_release_altmode_aux;
+	match = of_match_device(pmic_glink_of_client_mask, &pdev->dev);
+	if (match)
+		pg->client_mask = *(const unsigned int *)match->data;
+	else
+		pg->client_mask = PMIC_GLINK_CLIENT_DEFAULT;
+
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_UCSI)) {
+		ret = pmic_glink_add_aux_device(pg, &pg->ucsi_aux, "ucsi");
+		if (ret)
+			return ret;
+	}
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_ALTMODE)) {
+		ret = pmic_glink_add_aux_device(pg, &pg->altmode_aux, "altmode");
+		if (ret)
+			goto out_release_ucsi_aux;
+	}
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_BATT)) {
+		ret = pmic_glink_add_aux_device(pg, &pg->ps_aux, "power-supply");
+		if (ret)
+			goto out_release_altmode_aux;
+	}
pg->pdr = pdr_handle_alloc(pmic_glink_pdr_callback, pg);
  	if (IS_ERR(pg->pdr)) {
@@ -278,9 +316,14 @@ static int pmic_glink_probe(struct platform_device *pdev)
  out_release_pdr_handle:
  	pdr_handle_release(pg->pdr);
  out_release_aux_devices:
-	pmic_glink_del_aux_device(pg, &pg->ps_aux);
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_BATT))
+		pmic_glink_del_aux_device(pg, &pg->ps_aux);
  out_release_altmode_aux:
-	pmic_glink_del_aux_device(pg, &pg->altmode_aux);
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_ALTMODE))
+		pmic_glink_del_aux_device(pg, &pg->altmode_aux);
+out_release_ucsi_aux:
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_UCSI))
+		pmic_glink_del_aux_device(pg, &pg->ucsi_aux);
return ret;
  }
@@ -291,8 +334,12 @@ static int pmic_glink_remove(struct platform_device *pdev)
pdr_handle_release(pg->pdr); - pmic_glink_del_aux_device(pg, &pg->ps_aux);
-	pmic_glink_del_aux_device(pg, &pg->altmode_aux);
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_BATT))
+		pmic_glink_del_aux_device(pg, &pg->ps_aux);
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_ALTMODE))
+		pmic_glink_del_aux_device(pg, &pg->altmode_aux);
+	if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_UCSI))
+		pmic_glink_del_aux_device(pg, &pg->ucsi_aux);
mutex_lock(&__pmic_glink_lock);
  	__pmic_glink = NULL;


--
With best wishes
Dmitry




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