mfd: lpc_ich: Add a platform device for pinctrl Denverton

This is to cater the need in non-ACPI system whereby a platform device
has to be created in order to bind with the Denverton pinctrl driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230926190834.932233-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index 8b21d0f629c85ea32c0b08cfd3fdcb3f56242b8f..ea5f01e07dafd537c1b142087d2a9ef4f0a92725 100644 (file)
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -226,6 +226,49 @@ static const struct lpc_ich_gpio_info apl_gpio_info = {
        .offsets = apl_gpio_offsets,
 };
 
+#define DNV_GPIO_NORTH         0
+#define DNV_GPIO_SOUTH         1
+
+#define DNV_GPIO_NR_DEVICES    1
+#define DNV_GPIO_NR_RESOURCES  2
+
+/* Offset data for Denverton GPIO controllers */
+static resource_size_t dnv_gpio_offsets[DNV_GPIO_NR_RESOURCES] = {
+       [DNV_GPIO_NORTH]        = 0xc20000,
+       [DNV_GPIO_SOUTH]        = 0xc50000,
+};
+
+#define DNV_GPIO_IRQ                   14
+
+static struct resource dnv_gpio_resources[DNV_GPIO_NR_RESOURCES + 1] = {
+       [DNV_GPIO_NORTH] = DEFINE_RES_MEM(0, 0),
+       [DNV_GPIO_SOUTH] = DEFINE_RES_MEM(0, 0),
+       DEFINE_RES_IRQ(DNV_GPIO_IRQ),
+};
+
+static struct resource *dnv_gpio_mem_resources[DNV_GPIO_NR_RESOURCES] = {
+       [DNV_GPIO_NORTH] = &dnv_gpio_resources[DNV_GPIO_NORTH],
+       [DNV_GPIO_SOUTH] = &dnv_gpio_resources[DNV_GPIO_SOUTH],
+};
+
+static const struct mfd_cell dnv_gpio_devices[DNV_GPIO_NR_DEVICES] = {
+       {
+               .name = "denverton-pinctrl",
+               .num_resources = ARRAY_SIZE(dnv_gpio_resources),
+               .resources = dnv_gpio_resources,
+               .ignore_resource_conflicts = true,
+       },
+};
+
+static const struct lpc_ich_gpio_info dnv_gpio_info = {
+       .hid = "INTC3000",
+       .devices = dnv_gpio_devices,
+       .nr_devices = ARRAY_SIZE(dnv_gpio_devices),
+       .resources = dnv_gpio_mem_resources,
+       .nr_resources = ARRAY_SIZE(dnv_gpio_mem_resources),
+       .offsets = dnv_gpio_offsets,
+};
+
 static struct mfd_cell lpc_ich_spi_cell = {
        .name = "intel-spi",
        .num_resources = ARRAY_SIZE(intel_spi_res),
@@ -303,6 +346,7 @@ enum lpc_chipsets {
        LPC_LEWISBURG,  /* Lewisburg */
        LPC_9S,         /* 9 Series */
        LPC_APL,        /* Apollo Lake SoC */
+       LPC_DNV,        /* Denverton SoC */
        LPC_GLK,        /* Gemini Lake SoC */
        LPC_COUGARMOUNTAIN,/* Cougar Mountain SoC*/
 };
@@ -648,6 +692,10 @@ static struct lpc_ich_info lpc_chipset_info[] = {
                .gpio_info = &apl_gpio_info,
                .spi_type = INTEL_SPI_BXT,
        },
+       [LPC_DNV] = {
+               .name = "Denverton SoC",
+               .gpio_info = &dnv_gpio_info,
+       },
        [LPC_GLK] = {
                .name = "Gemini Lake SoC",
                .spi_type = INTEL_SPI_BXT,
@@ -666,6 +714,7 @@ static struct lpc_ich_info lpc_chipset_info[] = {
  */
 static const struct pci_device_id lpc_ich_ids[] = {
        { PCI_VDEVICE(INTEL, 0x0f1c), LPC_BAYTRAIL},
+       { PCI_VDEVICE(INTEL, 0x19dc), LPC_DNV},
        { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT},
        { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD},
        { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM},