linux-kernel - [PATCH v1 1/1] pinctrl: intel: Define maximum pad number in the group

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Date:   Mon, 19 Dec 2022 14:32:40 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andy@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v1 1/1] pinctrl: intel: Define maximum pad number in the group

Instead of using hard coded magic number here and there,
define maximum pad number in the group in newly added
INTEL_PINCTRL_MAX_GPP_SIZE.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/intel/pinctrl-intel.c | 6 +++---
 drivers/pinctrl/intel/pinctrl-intel.h | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index 9d2791a81ffa..2f7931d9602c 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1403,7 +1403,7 @@ static int intel_pinctrl_add_padgroups_by_gpps(struct intel_pinctrl *pctrl,
 	for (i = 0; i < ngpps; i++) {
 		gpps[i] = community->gpps[i];
 
-		if (gpps[i].size > 32)
+		if (gpps[i].size > INTEL_PINCTRL_MAX_GPP_SIZE)
 			return -EINVAL;
 
 		/* Special treatment for GPIO base */
@@ -1421,7 +1421,7 @@ static int intel_pinctrl_add_padgroups_by_gpps(struct intel_pinctrl *pctrl,
 		}
 
 		gpps[i].padown_num = padown_num;
-		padown_num += DIV_ROUND_UP(gpps[i].size * 4, 32);
+		padown_num += DIV_ROUND_UP(gpps[i].size * 4, INTEL_PINCTRL_MAX_GPP_SIZE);
 	}
 
 	community->gpps = gpps;
@@ -1437,7 +1437,7 @@ static int intel_pinctrl_add_padgroups_by_size(struct intel_pinctrl *pctrl,
 	unsigned int padown_num = 0;
 	size_t i, ngpps = DIV_ROUND_UP(npins, community->gpp_size);
 
-	if (community->gpp_size > 32)
+	if (community->gpp_size > INTEL_PINCTRL_MAX_GPP_SIZE)
 		return -EINVAL;
 
 	gpps = devm_kcalloc(pctrl->dev, ngpps, sizeof(*gpps), GFP_KERNEL);
diff --git a/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h
index 981c1f520f13..3b0e2d3f15d5 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.h
+++ b/drivers/pinctrl/intel/pinctrl-intel.h
@@ -46,11 +46,13 @@ struct intel_function {
 	size_t ngroups;
 };
 
+#define INTEL_PINCTRL_MAX_GPP_SIZE	32
+
 /**
  * struct intel_padgroup - Hardware pad group information
  * @reg_num: GPI_IS register number
  * @base: Starting pin of this group
- * @size: Size of this group (maximum is 32).
+ * @size: Size of this group (maximum is %INTEL_PINCTRL_MAX_GPP_SIZE).
  * @gpio_base: Starting GPIO base of this group
  * @padown_num: PAD_OWN register number (assigned by the core driver)
  *
-- 
2.35.1