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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Intel LPSS ACPI support.4 *5 * Copyright (C) 2015, Intel Corporation6 *7 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>8 * Mika Westerberg <mika.westerberg@linux.intel.com>9 */10 11#include <linux/device.h>12#include <linux/gfp_types.h>13#include <linux/ioport.h>14#include <linux/mod_devicetable.h>15#include <linux/module.h>16#include <linux/pm.h>17#include <linux/pm_runtime.h>18#include <linux/platform_device.h>19#include <linux/property.h>20 21#include <linux/pxa2xx_ssp.h>22 23#include <asm/errno.h>24 25#include "intel-lpss.h"26 27static const struct property_entry spt_spi_properties[] = {28 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),29 { }30};31 32static const struct software_node spt_spi_node = {33 .properties = spt_spi_properties,34};35 36static const struct intel_lpss_platform_info spt_info = {37 .clk_rate = 120000000,38 .swnode = &spt_spi_node,39};40 41static const struct property_entry spt_i2c_properties[] = {42 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),43 { },44};45 46static const struct software_node spt_i2c_node = {47 .properties = spt_i2c_properties,48};49 50static const struct intel_lpss_platform_info spt_i2c_info = {51 .clk_rate = 120000000,52 .swnode = &spt_i2c_node,53};54 55static const struct property_entry uart_properties[] = {56 PROPERTY_ENTRY_U32("reg-io-width", 4),57 PROPERTY_ENTRY_U32("reg-shift", 2),58 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),59 { },60};61 62static const struct software_node uart_node = {63 .properties = uart_properties,64};65 66static const struct intel_lpss_platform_info spt_uart_info = {67 .clk_rate = 120000000,68 .clk_con_id = "baudclk",69 .swnode = &uart_node,70};71 72static const struct property_entry bxt_spi_properties[] = {73 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),74 { }75};76 77static const struct software_node bxt_spi_node = {78 .properties = bxt_spi_properties,79};80 81static const struct intel_lpss_platform_info bxt_info = {82 .clk_rate = 100000000,83 .swnode = &bxt_spi_node,84};85 86static const struct property_entry bxt_i2c_properties[] = {87 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),88 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),89 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),90 { },91};92 93static const struct software_node bxt_i2c_node = {94 .properties = bxt_i2c_properties,95};96 97static const struct intel_lpss_platform_info bxt_i2c_info = {98 .clk_rate = 133000000,99 .swnode = &bxt_i2c_node,100};101 102static const struct property_entry apl_i2c_properties[] = {103 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),104 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),105 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),106 { },107};108 109static const struct software_node apl_i2c_node = {110 .properties = apl_i2c_properties,111};112 113static const struct intel_lpss_platform_info apl_i2c_info = {114 .clk_rate = 133000000,115 .swnode = &apl_i2c_node,116};117 118static const struct property_entry cnl_spi_properties[] = {119 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_CNL_SSP),120 { }121};122 123static const struct software_node cnl_spi_node = {124 .properties = cnl_spi_properties,125};126 127static const struct intel_lpss_platform_info cnl_info = {128 .clk_rate = 120000000,129 .swnode = &cnl_spi_node,130};131 132static const struct intel_lpss_platform_info cnl_i2c_info = {133 .clk_rate = 216000000,134 .swnode = &spt_i2c_node,135};136 137static const struct acpi_device_id intel_lpss_acpi_ids[] = {138 /* SPT */139 { "INT3440", (kernel_ulong_t)&spt_info },140 { "INT3441", (kernel_ulong_t)&spt_info },141 { "INT3442", (kernel_ulong_t)&spt_i2c_info },142 { "INT3443", (kernel_ulong_t)&spt_i2c_info },143 { "INT3444", (kernel_ulong_t)&spt_i2c_info },144 { "INT3445", (kernel_ulong_t)&spt_i2c_info },145 { "INT3446", (kernel_ulong_t)&spt_i2c_info },146 { "INT3447", (kernel_ulong_t)&spt_i2c_info },147 { "INT3448", (kernel_ulong_t)&spt_uart_info },148 { "INT3449", (kernel_ulong_t)&spt_uart_info },149 { "INT344A", (kernel_ulong_t)&spt_uart_info },150 /* CNL */151 { "INT34B0", (kernel_ulong_t)&cnl_info },152 { "INT34B1", (kernel_ulong_t)&cnl_info },153 { "INT34B2", (kernel_ulong_t)&cnl_i2c_info },154 { "INT34B3", (kernel_ulong_t)&cnl_i2c_info },155 { "INT34B4", (kernel_ulong_t)&cnl_i2c_info },156 { "INT34B5", (kernel_ulong_t)&cnl_i2c_info },157 { "INT34B6", (kernel_ulong_t)&cnl_i2c_info },158 { "INT34B7", (kernel_ulong_t)&cnl_i2c_info },159 { "INT34B8", (kernel_ulong_t)&spt_uart_info },160 { "INT34B9", (kernel_ulong_t)&spt_uart_info },161 { "INT34BA", (kernel_ulong_t)&spt_uart_info },162 { "INT34BC", (kernel_ulong_t)&cnl_info },163 /* BXT */164 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },165 { "80860ABC", (kernel_ulong_t)&bxt_info },166 { "80860AC2", (kernel_ulong_t)&bxt_info },167 /* APL */168 { "80865AAC", (kernel_ulong_t)&apl_i2c_info },169 { "80865ABC", (kernel_ulong_t)&bxt_info },170 { "80865AC2", (kernel_ulong_t)&bxt_info },171 { }172};173MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);174 175static int intel_lpss_acpi_probe(struct platform_device *pdev)176{177 const struct intel_lpss_platform_info *data;178 struct intel_lpss_platform_info *info;179 int ret;180 181 data = device_get_match_data(&pdev->dev);182 if (!data)183 return -ENODEV;184 185 info = devm_kmemdup(&pdev->dev, data, sizeof(*info), GFP_KERNEL);186 if (!info)187 return -ENOMEM;188 189 /* No need to check mem and irq here as intel_lpss_probe() does it for us */190 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);191 info->irq = platform_get_irq(pdev, 0);192 193 ret = intel_lpss_probe(&pdev->dev, info);194 if (ret)195 return ret;196 197 pm_runtime_set_active(&pdev->dev);198 pm_runtime_enable(&pdev->dev);199 200 return 0;201}202 203static void intel_lpss_acpi_remove(struct platform_device *pdev)204{205 intel_lpss_remove(&pdev->dev);206 pm_runtime_disable(&pdev->dev);207}208 209static struct platform_driver intel_lpss_acpi_driver = {210 .probe = intel_lpss_acpi_probe,211 .remove_new = intel_lpss_acpi_remove,212 .driver = {213 .name = "intel-lpss",214 .acpi_match_table = intel_lpss_acpi_ids,215 .pm = pm_ptr(&intel_lpss_pm_ops),216 },217};218 219module_platform_driver(intel_lpss_acpi_driver);220 221MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");222MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");223MODULE_DESCRIPTION("Intel LPSS ACPI driver");224MODULE_LICENSE("GPL v2");225MODULE_IMPORT_NS(INTEL_LPSS);226