linux-kernel - [PATCH v1 17/17] pinctrl: intel: Always use gpp_num_padown

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Message-Id: <20221219122643.3513-17-andriy.shevchenko@linux.intel.com>
Date:   Mon, 19 Dec 2022 14:26:43 +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 17/17] pinctrl: intel: Always use gpp_num_padown_regs in the main driver

For the size-based communities, always use gpp_num_padown_regs,
which is now provided explicitly via INTEL_COMMUNITY_SIZE() macro.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/intel/pinctrl-intel.c |  9 +--------
 drivers/pinctrl/intel/pinctrl-intel.h | 13 +++++++------
 2 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index cc3aaba24188..4029891ba628 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1451,14 +1451,7 @@ static int intel_pinctrl_add_padgroups_by_size(struct intel_pinctrl *pctrl,
 		gpps[i].gpio_base = gpps[i].base;
 		gpps[i].padown_num = padown_num;
 
-		/*
-		 * In older hardware the number of padown registers per
-		 * group is fixed regardless of the group size.
-		 */
-		if (community->gpp_num_padown_regs)
-			padown_num += community->gpp_num_padown_regs;
-		else
-			padown_num += DIV_ROUND_UP(gpps[i].size * 4, 32);
+		padown_num += community->gpp_num_padown_regs;
 	}
 
 	community->ngpps = ngpps;
diff --git a/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h
index b0f2be4c1fd1..981c1f520f13 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.h
+++ b/drivers/pinctrl/intel/pinctrl-intel.h
@@ -96,8 +96,7 @@ enum {
  * @gpp_size: Maximum number of pads in each group, such as PADCFGLOCK,
  *            HOSTSW_OWN, GPI_IS, GPI_IE. Used when @gpps is %NULL.
  * @gpp_num_padown_regs: Number of pad registers each pad group consumes at
- *			 minimum. Use %0 if the number of registers can be
- *			 determined by the size of the group.
+ *			 minimum. Used when @gpps is %NULL.
  * @gpps: Pad groups if the controller has variable size pad groups
  * @ngpps: Number of pad groups in this community
  * @pad_map: Optional non-linear mapping of the pads
@@ -106,11 +105,13 @@ enum {
  * @regs: Community specific common registers (reserved for core driver)
  * @pad_regs: Community specific pad registers (reserved for core driver)
  *
- * In some of Intel GPIO host controllers this driver supports each pad group
+ * In older Intel GPIO host controllers, this driver supports, each pad group
  * is of equal size (except the last one). In that case the driver can just
- * fill in @gpp_size field and let the core driver to handle the rest. If
- * the controller has pad groups of variable size the client driver can
- * pass custom @gpps and @ngpps instead.
+ * fill in @gpp_size and @gpp_num_padown_regs fields and let the core driver
+ * to handle the rest.
+ *
+ * In newer Intel GPIO host controllers each pad group is of variable size,
+ * so the client driver can pass custom @gpps and @ngpps instead.
  */
 struct intel_community {
 	unsigned int barno;
-- 
2.35.1