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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/mfd/intel-lpss-acpi.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/mfd/intel-lpss-acpi.c')
-rw-r--r--drivers/mfd/intel-lpss-acpi.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
new file mode 100644
index 000000000..212818aef
--- /dev/null
+++ b/drivers/mfd/intel-lpss-acpi.c
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Intel LPSS ACPI support.
+ *
+ * Copyright (C) 2015, Intel Corporation
+ *
+ * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/pxa2xx_ssp.h>
+
+#include "intel-lpss.h"
+
+static const struct property_entry spt_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),
+ { }
+};
+
+static const struct software_node spt_spi_node = {
+ .properties = spt_spi_properties,
+};
+
+static const struct intel_lpss_platform_info spt_info = {
+ .clk_rate = 120000000,
+ .swnode = &spt_spi_node,
+};
+
+static const struct property_entry spt_i2c_properties[] = {
+ PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
+ { },
+};
+
+static const struct software_node spt_i2c_node = {
+ .properties = spt_i2c_properties,
+};
+
+static const struct intel_lpss_platform_info spt_i2c_info = {
+ .clk_rate = 120000000,
+ .swnode = &spt_i2c_node,
+};
+
+static const struct property_entry uart_properties[] = {
+ PROPERTY_ENTRY_U32("reg-io-width", 4),
+ PROPERTY_ENTRY_U32("reg-shift", 2),
+ PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
+ { },
+};
+
+static const struct software_node uart_node = {
+ .properties = uart_properties,
+};
+
+static const struct intel_lpss_platform_info spt_uart_info = {
+ .clk_rate = 120000000,
+ .clk_con_id = "baudclk",
+ .swnode = &uart_node,
+};
+
+static const struct property_entry bxt_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),
+ { }
+};
+
+static const struct software_node bxt_spi_node = {
+ .properties = bxt_spi_properties,
+};
+
+static const struct intel_lpss_platform_info bxt_info = {
+ .clk_rate = 100000000,
+ .swnode = &bxt_spi_node,
+};
+
+static const struct property_entry bxt_i2c_properties[] = {
+ PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
+ PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
+ PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
+ { },
+};
+
+static const struct software_node bxt_i2c_node = {
+ .properties = bxt_i2c_properties,
+};
+
+static const struct intel_lpss_platform_info bxt_i2c_info = {
+ .clk_rate = 133000000,
+ .swnode = &bxt_i2c_node,
+};
+
+static const struct property_entry apl_i2c_properties[] = {
+ PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
+ PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
+ PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
+ { },
+};
+
+static const struct software_node apl_i2c_node = {
+ .properties = apl_i2c_properties,
+};
+
+static const struct intel_lpss_platform_info apl_i2c_info = {
+ .clk_rate = 133000000,
+ .swnode = &apl_i2c_node,
+};
+
+static const struct property_entry cnl_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_CNL_SSP),
+ { }
+};
+
+static const struct software_node cnl_spi_node = {
+ .properties = cnl_spi_properties,
+};
+
+static const struct intel_lpss_platform_info cnl_info = {
+ .clk_rate = 120000000,
+ .swnode = &cnl_spi_node,
+};
+
+static const struct intel_lpss_platform_info cnl_i2c_info = {
+ .clk_rate = 216000000,
+ .swnode = &spt_i2c_node,
+};
+
+static const struct acpi_device_id intel_lpss_acpi_ids[] = {
+ /* SPT */
+ { "INT3440", (kernel_ulong_t)&spt_info },
+ { "INT3441", (kernel_ulong_t)&spt_info },
+ { "INT3442", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3443", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3444", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3445", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3446", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3447", (kernel_ulong_t)&spt_i2c_info },
+ { "INT3448", (kernel_ulong_t)&spt_uart_info },
+ { "INT3449", (kernel_ulong_t)&spt_uart_info },
+ { "INT344A", (kernel_ulong_t)&spt_uart_info },
+ /* CNL */
+ { "INT34B0", (kernel_ulong_t)&cnl_info },
+ { "INT34B1", (kernel_ulong_t)&cnl_info },
+ { "INT34B2", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B3", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B4", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B5", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B6", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B7", (kernel_ulong_t)&cnl_i2c_info },
+ { "INT34B8", (kernel_ulong_t)&spt_uart_info },
+ { "INT34B9", (kernel_ulong_t)&spt_uart_info },
+ { "INT34BA", (kernel_ulong_t)&spt_uart_info },
+ { "INT34BC", (kernel_ulong_t)&cnl_info },
+ /* BXT */
+ { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
+ { "80860ABC", (kernel_ulong_t)&bxt_info },
+ { "80860AC2", (kernel_ulong_t)&bxt_info },
+ /* APL */
+ { "80865AAC", (kernel_ulong_t)&apl_i2c_info },
+ { "80865ABC", (kernel_ulong_t)&bxt_info },
+ { "80865AC2", (kernel_ulong_t)&bxt_info },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
+
+static int intel_lpss_acpi_probe(struct platform_device *pdev)
+{
+ struct intel_lpss_platform_info *info;
+ const struct acpi_device_id *id;
+ int ret;
+
+ id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
+ if (!id)
+ return -ENODEV;
+
+ info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
+ GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!info->mem)
+ return -ENODEV;
+
+ info->irq = platform_get_irq(pdev, 0);
+
+ ret = intel_lpss_probe(&pdev->dev, info);
+ if (ret)
+ return ret;
+
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+}
+
+static int intel_lpss_acpi_remove(struct platform_device *pdev)
+{
+ intel_lpss_remove(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
+
+static struct platform_driver intel_lpss_acpi_driver = {
+ .probe = intel_lpss_acpi_probe,
+ .remove = intel_lpss_acpi_remove,
+ .driver = {
+ .name = "intel-lpss",
+ .acpi_match_table = intel_lpss_acpi_ids,
+ .pm = &intel_lpss_acpi_pm_ops,
+ },
+};
+
+module_platform_driver(intel_lpss_acpi_driver);
+
+MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
+MODULE_DESCRIPTION("Intel LPSS ACPI driver");
+MODULE_LICENSE("GPL v2");