linux-kernel - [PATCH 1/1] lpc_sch: Add Intel Centerton Multifunction Device support

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Message-Id: <1332349191-8068-1-git-send-email-seth.heasley@intel.com>
Date:	Wed, 21 Mar 2012 09:59:51 -0700
From:	Seth Heasley <seth.heasley@...el.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	James Ralston <james.d.ralston@...el.com>,
	Seth Heasley <seth.heasley@...el.com>
Subject: [PATCH 1/1] lpc_sch: Add Intel Centerton Multifunction Device support

This patch adds the DeviceIDs for the Intel Centerton Legacy Block.  The Legacy Block includes SMBus, GPIO, and Watchdog functionality.

Signed-off-by: Seth Heasley <seth.heasley@...el.com>
---
 drivers/mfd/lpc_sch.c |   16 +++++++++++++---
 1 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/lpc_sch.c b/drivers/mfd/lpc_sch.c
index abc4213..778af13 100644
--- a/drivers/mfd/lpc_sch.c
+++ b/drivers/mfd/lpc_sch.c
@@ -36,10 +36,13 @@
 
 #define GPIOBASE	0x44
 #define GPIO_IO_SIZE	64
+#define GPIO_IO_SIZE_128	128
 
 #define WDTBASE		0x84
 #define WDT_IO_SIZE	64
 
+#define PCI_DEVICE_ID_INTEL_CENTERTON_ILB	0x0c60
+
 static struct resource smbus_sch_resource = {
 		.flags = IORESOURCE_IO,
 };
@@ -68,7 +71,7 @@ static struct resource wdt_sch_resource = {
 
 static struct mfd_cell tunnelcreek_cells[] = {
 	{
-		.name = "tunnelcreek_wdt",
+		.name = "ie6xx_wdt",
 		.num_resources = 1,
 		.resources = &wdt_sch_resource,
 	},
@@ -77,6 +80,7 @@ static struct mfd_cell tunnelcreek_cells[] = {
 static DEFINE_PCI_DEVICE_TABLE(lpc_sch_ids) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ITC_LPC) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CENTERTON_ILB) },
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, lpc_sch_ids);
@@ -115,7 +119,12 @@ static int __devinit lpc_sch_probe(struct pci_dev *dev,
 	}
 
 	gpio_sch_resource.start = base_addr;
-	gpio_sch_resource.end = base_addr + GPIO_IO_SIZE - 1;
+
+	/* Intel Centerton has 128 bytes of I/O space */
+	if (id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB)
+		gpio_sch_resource.end = base_addr + GPIO_IO_SIZE_128 - 1;
+	else
+		gpio_sch_resource.end = base_addr + GPIO_IO_SIZE - 1;
 
 	for (i=0; i < ARRAY_SIZE(lpc_sch_cells); i++)
 		lpc_sch_cells[i].id = id->device;
@@ -125,7 +134,8 @@ static int __devinit lpc_sch_probe(struct pci_dev *dev,
 	if (ret)
 		goto out_dev;
 
-	if (id->device == PCI_DEVICE_ID_INTEL_ITC_LPC) {
+	if (id->device == PCI_DEVICE_ID_INTEL_ITC_LPC
+	 || id->device == PCI_DEVICE_ID_INTEL_CENTERTON_ILB) {
 		pci_read_config_dword(dev, WDTBASE, &base_addr_cfg);
 		if (!(base_addr_cfg & (1 << 31))) {
 			dev_err(&dev->dev, "Decode of the WDT I/O range disabled\n");
-- 
1.7.4.4

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