linux-kernel - [PATCH v4 3/8] mfd: lpc_ich: Factor out lpc_ich_enable_spi

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Message-Id: <20220131151346.45792-4-andriy.shevchenko@linux.intel.com>
Date:   Mon, 31 Jan 2022 17:13:41 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Wolfram Sang <wsa@...nel.org>, Jean Delvare <jdelvare@...e.de>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Tan Jui Nee <jui.nee.tan@...el.com>,
        Kate Hsuan <hpa@...hat.com>,
        Jonathan Yong <jonathan.yong@...el.com>,
        linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-gpio@...r.kernel.org,
        platform-driver-x86@...r.kernel.org
Cc:     Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Peter Tyser <ptyser@...-inc.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andy@...nel.org>,
        Mark Gross <markgross@...nel.org>,
        Henning Schild <henning.schild@...mens.com>
Subject: [PATCH v4 3/8] mfd: lpc_ich: Factor out lpc_ich_enable_spi_write()

Factor out duplicate code to lpc_ich_enable_spi_write() helper function.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Acked-by: Hans de Goede <hdegoede@...hat.com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>
Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/mfd/lpc_ich.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index f10e53187f67..13d8c64318e6 100644
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -1084,12 +1084,21 @@ static int lpc_ich_init_wdt(struct pci_dev *dev)
 	return ret;
 }
 
+static void lpc_ich_test_spi_write(struct pci_dev *dev, unsigned int devfn,
+				   struct intel_spi_boardinfo *info)
+{
+	u32 bcr;
+
+	pci_bus_read_config_dword(dev->bus, devfn, BCR, &bcr);
+	info->writeable = !!(bcr & BCR_WPD);
+}
+
 static int lpc_ich_init_spi(struct pci_dev *dev)
 {
 	struct lpc_ich_priv *priv = pci_get_drvdata(dev);
 	struct resource *res = &intel_spi_res[0];
 	struct intel_spi_boardinfo *info;
-	u32 spi_base, rcba, bcr;
+	u32 spi_base, rcba;
 
 	info = devm_kzalloc(&dev->dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
@@ -1113,8 +1122,7 @@ static int lpc_ich_init_spi(struct pci_dev *dev)
 			res->start = spi_base + SPIBASE_LPT;
 			res->end = res->start + SPIBASE_LPT_SZ - 1;
 
-			pci_read_config_dword(dev, BCR, &bcr);
-			info->writeable = !!(bcr & BCR_WPD);
+			lpc_ich_test_spi_write(dev, dev->devfn, info);
 		}
 		break;
 
@@ -1135,8 +1143,7 @@ static int lpc_ich_init_spi(struct pci_dev *dev)
 			res->start = spi_base & 0xfffffff0;
 			res->end = res->start + SPIBASE_APL_SZ - 1;
 
-			pci_bus_read_config_dword(bus, spi, BCR, &bcr);
-			info->writeable = !!(bcr & BCR_WPD);
+			lpc_ich_test_spi_write(dev, spi, info);
 		}
 
 		pci_bus_write_config_byte(bus, p2sb, 0xe1, 0x1);
-- 
2.34.1