linux-kernel - [PATCH v2 1/1] i2c: designware: set pinctrl recovery information from device pinctrl

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Date:   Wed, 14 Dec 2022 14:27:25 +0000
From:   Hanna Hawa <hhhawa@...zon.com>
To:     <jarkko.nikula@...ux.intel.com>,
        <andriy.shevchenko@...ux.intel.com>,
        <mika.westerberg@...ux.intel.com>, <jsd@...ihalf.com>
CC:     <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <dwmw@...zon.co.uk>, <benh@...zon.com>, <ronenk@...zon.com>,
        <talel@...zon.com>, <jonnyc@...zon.com>, <hanochu@...zon.com>,
        <farbere@...zon.com>, <itamark@...zon.com>,
        Hanna Hawa <hhhawa@...zon.com>
Subject: [PATCH v2 1/1] i2c: designware: set pinctrl recovery information from device pinctrl

The current implementation of designware recovery mechanism fit for
specific device (Intel / Altera Cyclone V SOC) which have two separated
"wired" GPIOs to the i2c bus via the SOC FPGA for the i2c recovery.

Make pinctrl recovery information to points to the device pinctrl by
setting the rinfo->pinctrl to dev->pins->p.

Change Log v1->v2:
- set the rinfo->pinctrl to dev->pins->p instead calling
  devm_pinctrl_get().

Signed-off-by: Hanna Hawa <hhhawa@...zon.com>
---
 drivers/i2c/busses/i2c-designware-master.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index dc3c5a15a95b..16a4cd68567c 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -17,6 +17,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/pinctrl/devinfo.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
@@ -832,6 +833,9 @@ static int i2c_dw_init_recovery_info(struct dw_i2c_dev *dev)
 	struct i2c_adapter *adap = &dev->adapter;
 	struct gpio_desc *gpio;
 
+	if (dev->dev->pins && dev->dev->pins->p)
+		rinfo->pinctrl = dev->dev->pins->p;
+
 	gpio = devm_gpiod_get_optional(dev->dev, "scl", GPIOD_OUT_HIGH);
 	if (IS_ERR_OR_NULL(gpio))
 		return PTR_ERR_OR_ZERO(gpio);
-- 
2.38.1