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path: root/drivers/acpi/acpi_lpss.c
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Diffstat (limited to 'drivers/acpi/acpi_lpss.c')
-rw-r--r--drivers/acpi/acpi_lpss.c35
1 files changed, 7 insertions, 28 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 4f3febf8a589..e75737fd7eef 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * ACPI support for Intel Lynxpoint LPSS. 2 * ACPI support for Intel Lynxpoint LPSS.
3 * 3 *
4 * Copyright (C) 2013, 2014, Intel Corporation 4 * Copyright (C) 2013, Intel Corporation
5 * Authors: Mika Westerberg <mika.westerberg@linux.intel.com> 5 * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
6 * Rafael J. Wysocki <rafael.j.wysocki@intel.com> 6 * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
7 * 7 *
@@ -60,8 +60,6 @@ ACPI_MODULE_NAME("acpi_lpss");
60#define LPSS_CLK_DIVIDER BIT(2) 60#define LPSS_CLK_DIVIDER BIT(2)
61#define LPSS_LTR BIT(3) 61#define LPSS_LTR BIT(3)
62#define LPSS_SAVE_CTX BIT(4) 62#define LPSS_SAVE_CTX BIT(4)
63#define LPSS_DEV_PROXY BIT(5)
64#define LPSS_PROXY_REQ BIT(6)
65 63
66struct lpss_private_data; 64struct lpss_private_data;
67 65
@@ -72,10 +70,8 @@ struct lpss_device_desc {
72 void (*setup)(struct lpss_private_data *pdata); 70 void (*setup)(struct lpss_private_data *pdata);
73}; 71};
74 72
75static struct device *proxy_device;
76
77static struct lpss_device_desc lpss_dma_desc = { 73static struct lpss_device_desc lpss_dma_desc = {
78 .flags = LPSS_CLK | LPSS_PROXY_REQ, 74 .flags = LPSS_CLK,
79}; 75};
80 76
81struct lpss_private_data { 77struct lpss_private_data {
@@ -150,24 +146,22 @@ static struct lpss_device_desc byt_pwm_dev_desc = {
150}; 146};
151 147
152static struct lpss_device_desc byt_uart_dev_desc = { 148static struct lpss_device_desc byt_uart_dev_desc = {
153 .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX | 149 .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
154 LPSS_DEV_PROXY,
155 .prv_offset = 0x800, 150 .prv_offset = 0x800,
156 .setup = lpss_uart_setup, 151 .setup = lpss_uart_setup,
157}; 152};
158 153
159static struct lpss_device_desc byt_spi_dev_desc = { 154static struct lpss_device_desc byt_spi_dev_desc = {
160 .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX | 155 .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
161 LPSS_DEV_PROXY,
162 .prv_offset = 0x400, 156 .prv_offset = 0x400,
163}; 157};
164 158
165static struct lpss_device_desc byt_sdio_dev_desc = { 159static struct lpss_device_desc byt_sdio_dev_desc = {
166 .flags = LPSS_CLK | LPSS_DEV_PROXY, 160 .flags = LPSS_CLK,
167}; 161};
168 162
169static struct lpss_device_desc byt_i2c_dev_desc = { 163static struct lpss_device_desc byt_i2c_dev_desc = {
170 .flags = LPSS_CLK | LPSS_SAVE_CTX | LPSS_DEV_PROXY, 164 .flags = LPSS_CLK | LPSS_SAVE_CTX,
171 .prv_offset = 0x800, 165 .prv_offset = 0x800,
172 .setup = byt_i2c_setup, 166 .setup = byt_i2c_setup,
173}; 167};
@@ -374,8 +368,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
374 adev->driver_data = pdata; 368 adev->driver_data = pdata;
375 pdev = acpi_create_platform_device(adev); 369 pdev = acpi_create_platform_device(adev);
376 if (!IS_ERR_OR_NULL(pdev)) { 370 if (!IS_ERR_OR_NULL(pdev)) {
377 if (!proxy_device && dev_desc->flags & LPSS_DEV_PROXY)
378 proxy_device = &pdev->dev;
379 return 1; 371 return 1;
380 } 372 }
381 373
@@ -600,14 +592,7 @@ static int acpi_lpss_runtime_suspend(struct device *dev)
600 if (pdata->dev_desc->flags & LPSS_SAVE_CTX) 592 if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
601 acpi_lpss_save_ctx(dev, pdata); 593 acpi_lpss_save_ctx(dev, pdata);
602 594
603 ret = acpi_dev_runtime_suspend(dev); 595 return acpi_dev_runtime_suspend(dev);
604 if (ret)
605 return ret;
606
607 if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device)
608 return pm_runtime_put_sync_suspend(proxy_device);
609
610 return 0;
611} 596}
612 597
613static int acpi_lpss_runtime_resume(struct device *dev) 598static int acpi_lpss_runtime_resume(struct device *dev)
@@ -615,12 +600,6 @@ static int acpi_lpss_runtime_resume(struct device *dev)
615 struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev)); 600 struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
616 int ret; 601 int ret;
617 602
618 if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device) {
619 ret = pm_runtime_get_sync(proxy_device);
620 if (ret)
621 return ret;
622 }
623
624 ret = acpi_dev_runtime_resume(dev); 603 ret = acpi_dev_runtime_resume(dev);
625 if (ret) 604 if (ret)
626 return ret; 605 return ret;