Introduce generic quirk table, and port existing walkaround for select Microsoft devices to it. This is a preparation for QUIRK_CLOCK_DIVIDER_UNITY.
Signed-off-by: Aleksandrs Vinarskis alex.vinarskis@gmail.com --- drivers/mfd/intel-lpss-pci.c | 23 +++++++++++++++-------- drivers/mfd/intel-lpss.c | 2 +- drivers/mfd/intel-lpss.h | 9 ++++++++- 3 files changed, 24 insertions(+), 10 deletions(-)
diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c index ae5759200622..eb3b0195db2e 100644 --- a/drivers/mfd/intel-lpss-pci.c +++ b/drivers/mfd/intel-lpss-pci.c @@ -18,18 +18,24 @@
#include "intel-lpss.h"
-/* Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources */ -static const struct pci_device_id ignore_resource_conflicts_ids[] = { - /* Microsoft Surface Go (version 1) I2C4 */ - { PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1182), }, - /* Microsoft Surface Go 2 I2C4 */ - { PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1237), }, +static const struct pci_device_id quirk_ids[] = { + { + /* Microsoft Surface Go (version 1) I2C4 */ + PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1182), + .driver_data = QUIRK_IGNORE_RESOURCE_CONFLICTS, + }, + { + /* Microsoft Surface Go 2 I2C4 */ + PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1237), + .driver_data = QUIRK_IGNORE_RESOURCE_CONFLICTS, + }, { } };
static int intel_lpss_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { + const struct pci_device_id *quirk_pci_info; struct intel_lpss_platform_info *info; int ret;
@@ -45,8 +51,9 @@ static int intel_lpss_pci_probe(struct pci_dev *pdev, info->mem = &pdev->resource[0]; info->irq = pdev->irq;
- if (pci_match_id(ignore_resource_conflicts_ids, pdev)) - info->ignore_resource_conflicts = true; + quirk_pci_info = pci_match_id(quirk_ids, pdev); + if (quirk_pci_info) + info->quirks = quirk_pci_info->driver_data;
pdev->d3cold_delay = 0;
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c index 00e7b578bb3e..7af0a1fab062 100644 --- a/drivers/mfd/intel-lpss.c +++ b/drivers/mfd/intel-lpss.c @@ -401,7 +401,7 @@ int intel_lpss_probe(struct device *dev, return ret;
lpss->cell->swnode = info->swnode; - lpss->cell->ignore_resource_conflicts = info->ignore_resource_conflicts; + lpss->cell->ignore_resource_conflicts = info->quirks & QUIRK_IGNORE_RESOURCE_CONFLICTS;
intel_lpss_init_dev(lpss);
diff --git a/drivers/mfd/intel-lpss.h b/drivers/mfd/intel-lpss.h index 062ce95b68b9..f636059cbc71 100644 --- a/drivers/mfd/intel-lpss.h +++ b/drivers/mfd/intel-lpss.h @@ -11,16 +11,23 @@ #ifndef __MFD_INTEL_LPSS_H #define __MFD_INTEL_LPSS_H
+#include <linux/bits.h> #include <linux/pm.h>
+/* + * Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources. + * Set to ignore resource conflicts with ACPI declared SystemMemory regions. + */ +#define QUIRK_IGNORE_RESOURCE_CONFLICTS BIT(0) + struct device; struct resource; struct software_node;
struct intel_lpss_platform_info { struct resource *mem; - bool ignore_resource_conflicts; int irq; + unsigned int quirks; unsigned long clk_rate; const char *clk_con_id; const struct software_node *swnode;