linux-kernel - [PATCH 1/1] mfd: Use gpio-ich driver for 8-series and 9-series Intel PCH devices

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Date:	Wed, 6 Jul 2016 22:35:02 -0300 (BRT)
From:	Dan Gora <dg@...x.com>
To:	Peter Tyser <ptyser@...-inc.com>, Lee Jones <lee.jones@...aro.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] mfd: Use gpio-ich driver for 8-series and 9-series Intel
 PCH devices


The Intel 8-series and 9-series PCH devices, described by the descriptors
LPC_LPT and LPC_9S although codenamed 'lynxpoint' do not use the same GPIO
register layout which is used by the gpio-lynxpoint driver.  They use the
same ICH_V5_GPIO layout as the gpio-ich driver.

See:
http://www.intel.com/content/www/us/en/chipsets/8-series-chipset-pch-datasheet.html
http://www.intel.com/content/www/us/en/chipsets/9-series-chipset-pch-datasheet.html

The devices described by "Mobile 4th Generation Intel Core Processor
Family I/O" manual use the gpio-lynxpoint driver and are described by the
LPC_LPT_LP descriptor.

See:
http://www.intel.com/content/www/us/en/processors/core/4th-gen-core-family-mobile-i-o-datasheet.html

Signed-off-by: Dan Gora <dg@...x.com>
---
  drivers/mfd/lpc_ich.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index bd3aa45..66f72ad 100644
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -493,6 +493,7 @@ static struct lpc_ich_info lpc_chipset_info[] = {
  	[LPC_LPT] = {
  		.name = "Lynx Point",
  		.iTCO_version = 2,
+		.gpio_version = ICH_V5_GPIO,
  	},
  	[LPC_LPT_LP] = {
  		.name = "Lynx Point_LP",
@@ -530,6 +531,7 @@ static struct lpc_ich_info lpc_chipset_info[] = {
  	[LPC_9S] = {
  		.name = "9 Series",
  		.iTCO_version = 2,
+		.gpio_version = ICH_V5_GPIO,
  	},
  };

-- 
2.8.0