linux-kernel - [PATCH v2 3/3] platform/x86: intel_speed_select

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Message-Id: <20230926175349.989618-1-srinivas.pandruvada@linux.intel.com>
Date:   Tue, 26 Sep 2023 10:53:49 -0700
From:   Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     hdegoede@...hat.com, markgross@...nel.org,
        ilpo.jarvinen@...ux.intel.com, andriy.shevchenko@...ux.intel.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject: [PATCH v2 3/3] platform/x86: intel_speed_select_if: Remove hardcoded map size

The driver is using 256 as the size while calling devm_ioremap(). The
maximum offset can be obtained from isst_mmio_range. Add a field "size"
to the isst_mmio_range and use it instead of hardcoding.

No functional impact is expected.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
---
Changes:
As per Andy's comments pre calculate size

 .../x86/intel/speed_select_if/isst_if_mmio.c     | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/platform/x86/intel/speed_select_if/isst_if_mmio.c b/drivers/platform/x86/intel/speed_select_if/isst_if_mmio.c
index ff49025ec085..13e068c77d50 100644
--- a/drivers/platform/x86/intel/speed_select_if/isst_if_mmio.c
+++ b/drivers/platform/x86/intel/speed_select_if/isst_if_mmio.c
@@ -18,16 +18,17 @@
 struct isst_mmio_range {
 	int beg;
 	int end;
+	int size;
 };
 
 static struct isst_mmio_range mmio_range_devid_0[] = {
-	{0x04, 0x14},
-	{0x20, 0xD0},
+	{0x04, 0x14, 0x18},
+	{0x20, 0xD0, 0xD4},
 };
 
 static struct isst_mmio_range mmio_range_devid_1[] = {
-	{0x04, 0x14},
-	{0x20, 0x11C},
+	{0x04, 0x14, 0x18},
+	{0x20, 0x11C, 0x120},
 };
 
 struct isst_if_device {
@@ -114,13 +115,16 @@ static int isst_if_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pcu_base &= GENMASK(10, 0);
 	base_addr = (u64)mmio_base << 23 | (u64) pcu_base << 12;
-	punit_dev->punit_mmio = devm_ioremap(&pdev->dev, base_addr, 256);
+
+	punit_dev->mmio_range = (struct isst_mmio_range *) ent->driver_data;
+
+	punit_dev->punit_mmio = devm_ioremap(&pdev->dev, base_addr,
+					     punit_dev->mmio_range[1].size);
 	if (!punit_dev->punit_mmio)
 		return -ENOMEM;
 
 	mutex_init(&punit_dev->mutex);
 	pci_set_drvdata(pdev, punit_dev);
-	punit_dev->mmio_range = (struct isst_mmio_range *) ent->driver_data;
 
 	memset(&cb, 0, sizeof(cb));
 	cb.cmd_size = sizeof(struct isst_if_io_reg);
-- 
2.41.0