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Merge branch 'acpi-soc' 

* acpi-soc:
  PM / clk: don't leave clocks enabled when driver not bound
  i2c: dw: Add APM X-Gene ACPI I2C device support
  ACPI / APD: Add APM X-Gene ACPI I2C device support
  ACPI / LPSS: change 'does not have' to 'has' in comment
  Revert "dmaengine: dw: platform: provide platform data for Intel"
  dmaengine: dw: return immediately from IRQ when DMA isn't in use
  dmaengine: dw: platform: power on device on shutdown
  ACPI / LPSS: override power state for LPSS DMA device
  ACPI / LPSS: power on when probe() and otherwise when remove()
  ACPI / LPSS: do delay for all LPSS devices when D3->D0
  ACPI / LPSS: allow to use specific PM domain during ->probe()
  Revert "ACPI / LPSS: allow to use specific PM domain during ->probe()"
  device core: add BUS_NOTIFY_DRIVER_NOT_BOUND notification
  x86/platform/iosf_mbi: Remove duplicate definitions

Conflicts:
	drivers/i2c/busses/i2c-designware-platdrv.c
This commit is contained in:
Rafael J. Wysocki 2016-01-12 01:08:47 +01:00
parent 989652871b d35818a915
commit 1e3f28a552
16 changed files with 333 additions and 167 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/Kconfig
View File

@ -523,9 +523,10 @@ config X86_INTEL_QUARK
config X86_INTEL_LPSS
bool "Intel Low Power Subsystem Support"
depends on ACPI
depends on X86 && ACPI
select COMMON_CLK
select PINCTRL
select IOSF_MBI
---help---
Select to build support for Intel Low Power Subsystem such as
found on Intel Lynxpoint PCH. Selecting this option enables

51
arch/x86/include/asm/iosf_mbi.h
View File

@ -1,5 +1,5 @@
/*
* iosf_mbi.h: Intel OnChip System Fabric MailBox access support
* Intel OnChip System Fabric MailBox access support
*/
#ifndef IOSF_MBI_SYMS_H
@ -16,6 +16,18 @@
#define MBI_MASK_LO 0x000000FF
#define MBI_ENABLE 0xF0
/* IOSF SB read/write opcodes */
#define MBI_MMIO_READ 0x00
#define MBI_MMIO_WRITE 0x01
#define MBI_CFG_READ 0x04
#define MBI_CFG_WRITE 0x05
#define MBI_CR_READ 0x06
#define MBI_CR_WRITE 0x07
#define MBI_REG_READ 0x10
#define MBI_REG_WRITE 0x11
#define MBI_ESRAM_READ 0x12
#define MBI_ESRAM_WRITE 0x13
/* Baytrail available units */
#define BT_MBI_UNIT_AUNIT 0x00
#define BT_MBI_UNIT_SMC 0x01
@ -28,50 +40,13 @@
#define BT_MBI_UNIT_SATA 0xA3
#define BT_MBI_UNIT_PCIE 0xA6
/* Baytrail read/write opcodes */
#define BT_MBI_AUNIT_READ 0x10
#define BT_MBI_AUNIT_WRITE 0x11
#define BT_MBI_SMC_READ 0x10
#define BT_MBI_SMC_WRITE 0x11
#define BT_MBI_CPU_READ 0x10
#define BT_MBI_CPU_WRITE 0x11
#define BT_MBI_BUNIT_READ 0x10
#define BT_MBI_BUNIT_WRITE 0x11
#define BT_MBI_PMC_READ 0x06
#define BT_MBI_PMC_WRITE 0x07
#define BT_MBI_GFX_READ 0x00
#define BT_MBI_GFX_WRITE 0x01
#define BT_MBI_SMIO_READ 0x06
#define BT_MBI_SMIO_WRITE 0x07
#define BT_MBI_USB_READ 0x06
#define BT_MBI_USB_WRITE 0x07
#define BT_MBI_SATA_READ 0x00
#define BT_MBI_SATA_WRITE 0x01
#define BT_MBI_PCIE_READ 0x00
#define BT_MBI_PCIE_WRITE 0x01
/* Quark available units */
#define QRK_MBI_UNIT_HBA 0x00
#define QRK_MBI_UNIT_HB 0x03
#define QRK_MBI_UNIT_RMU 0x04
#define QRK_MBI_UNIT_MM 0x05
#define QRK_MBI_UNIT_MMESRAM 0x05
#define QRK_MBI_UNIT_SOC 0x31
/* Quark read/write opcodes */
#define QRK_MBI_HBA_READ 0x10
#define QRK_MBI_HBA_WRITE 0x11
#define QRK_MBI_HB_READ 0x10
#define QRK_MBI_HB_WRITE 0x11
#define QRK_MBI_RMU_READ 0x10
#define QRK_MBI_RMU_WRITE 0x11
#define QRK_MBI_MM_READ 0x10
#define QRK_MBI_MM_WRITE 0x11
#define QRK_MBI_MMESRAM_READ 0x12
#define QRK_MBI_MMESRAM_WRITE 0x13
#define QRK_MBI_SOC_READ 0x06
#define QRK_MBI_SOC_WRITE 0x07
#if IS_ENABLED(CONFIG_IOSF_MBI)
bool iosf_mbi_available(void);

7
arch/x86/platform/atom/punit_atom_debug.c
View File

@ -25,8 +25,6 @@
#include <asm/cpu_device_id.h>
#include <asm/iosf_mbi.h>
/* Side band Interface port */
#define PUNIT_PORT 0x04
/* Power gate status reg */
#define PWRGT_STATUS 0x61
/* Subsystem config/status Video processor */
@ -85,9 +83,8 @@ static int punit_dev_state_show(struct seq_file *seq_file, void *unused)
seq_puts(seq_file, "\n\nPUNIT NORTH COMPLEX DEVICES :\n");
while (punit_devp->name) {
status = iosf_mbi_read(PUNIT_PORT, BT_MBI_PMC_READ,
punit_devp->reg,
&punit_pwr_status);
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
punit_devp->reg, &punit_pwr_status);
if (status) {
seq_printf(seq_file, "%9s : Read Failed\n",
punit_devp->name);

26
arch/x86/platform/intel-quark/imr.c
View File

@ -111,23 +111,19 @@ static int imr_read(struct imr_device *idev, u32 imr_id, struct imr_regs *imr)
u32 reg = imr_id * IMR_NUM_REGS + idev->reg_base;
int ret;
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, QRK_MBI_MM_READ,
reg++, &imr->addr_lo);
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, MBI_REG_READ, reg++, &imr->addr_lo);
if (ret)
return ret;
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, QRK_MBI_MM_READ,
reg++, &imr->addr_hi);
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, MBI_REG_READ, reg++, &imr->addr_hi);
if (ret)
return ret;
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, QRK_MBI_MM_READ,
reg++, &imr->rmask);
ret = iosf_mbi_read(QRK_MBI_UNIT_MM, MBI_REG_READ, reg++, &imr->rmask);
if (ret)
return ret;
return iosf_mbi_read(QRK_MBI_UNIT_MM, QRK_MBI_MM_READ,
reg++, &imr->wmask);
return iosf_mbi_read(QRK_MBI_UNIT_MM, MBI_REG_READ, reg++, &imr->wmask);
}
/**
@ -151,30 +147,26 @@ static int imr_write(struct imr_device *idev, u32 imr_id,
local_irq_save(flags);
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, QRK_MBI_MM_WRITE, reg++,
imr->addr_lo);
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE, reg++, imr->addr_lo);
if (ret)
goto failed;
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, QRK_MBI_MM_WRITE,
reg++, imr->addr_hi);
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE, reg++, imr->addr_hi);
if (ret)
goto failed;
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, QRK_MBI_MM_WRITE,
reg++, imr->rmask);
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE, reg++, imr->rmask);
if (ret)
goto failed;
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, QRK_MBI_MM_WRITE,
reg++, imr->wmask);
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE, reg++, imr->wmask);
if (ret)
goto failed;
/* Lock bit must be set separately to addr_lo address bits. */
if (lock) {
imr->addr_lo |= IMR_LOCK;
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, QRK_MBI_MM_WRITE,
ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE,
reg - IMR_NUM_REGS, imr->addr_lo);
if (ret)
goto failed;

16
drivers/acpi/acpi_apd.c
View File

@ -51,7 +51,7 @@ struct apd_private_data {
const struct apd_device_desc *dev_desc;
};
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
#if defined(CONFIG_X86_AMD_PLATFORM_DEVICE) || defined(CONFIG_ARM64)
#define APD_ADDR(desc) ((unsigned long)&desc)
static int acpi_apd_setup(struct apd_private_data *pdata)
@ -71,6 +71,7 @@ static int acpi_apd_setup(struct apd_private_data *pdata)
return 0;
}
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
static struct apd_device_desc cz_i2c_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 133000000,
@ -80,6 +81,14 @@ static struct apd_device_desc cz_uart_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 48000000,
};
#endif
#ifdef CONFIG_ARM64
static struct apd_device_desc xgene_i2c_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 100000000,
};
#endif
#else
@ -132,9 +141,14 @@ static int acpi_apd_create_device(struct acpi_device *adev,
static const struct acpi_device_id acpi_apd_device_ids[] = {
/* Generic apd devices */
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
{ "AMD0010", APD_ADDR(cz_i2c_desc) },
{ "AMD0020", APD_ADDR(cz_uart_desc) },
{ "AMD0030", },
#endif
#ifdef CONFIG_ARM64
{ "APMC0D0F", APD_ADDR(xgene_i2c_desc) },
#endif
{ }
};

211
drivers/acpi/acpi_lpss.c
View File

@ -15,6 +15,7 @@
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/platform_data/clk-lpss.h>
#include <linux/pm_runtime.h>
@ -26,6 +27,10 @@ ACPI_MODULE_NAME("acpi_lpss");
#ifdef CONFIG_X86_INTEL_LPSS
#include <asm/cpu_device_id.h>
#include <asm/iosf_mbi.h>
#include <asm/pmc_atom.h>
#define LPSS_ADDR(desc) ((unsigned long)&desc)
#define LPSS_CLK_SIZE 0x04
@ -71,7 +76,7 @@ struct lpss_device_desc {
void (*setup)(struct lpss_private_data *pdata);
};
static struct lpss_device_desc lpss_dma_desc = {
static const struct lpss_device_desc lpss_dma_desc = {
.flags = LPSS_CLK,
};
@ -84,6 +89,23 @@ struct lpss_private_data {
u32 prv_reg_ctx[LPSS_PRV_REG_COUNT];
};
/* LPSS run time quirks */
static unsigned int lpss_quirks;
/*
* LPSS_QUIRK_ALWAYS_POWER_ON: override power state for LPSS DMA device.
*
* The LPSS DMA controller has neither _PS0 nor _PS3 method. Moreover
* it can be powered off automatically whenever the last LPSS device goes down.
* In case of no power any access to the DMA controller will hang the system.
* The behaviour is reproduced on some HP laptops based on Intel BayTrail as
* well as on ASuS T100TA transformer.
*
* This quirk overrides power state of entire LPSS island to keep DMA powered
* on whenever we have at least one other device in use.
*/
#define LPSS_QUIRK_ALWAYS_POWER_ON BIT(0)
/* UART Component Parameter Register */
#define LPSS_UART_CPR 0xF4
#define LPSS_UART_CPR_AFCE BIT(4)
@ -196,13 +218,21 @@ static const struct lpss_device_desc bsw_i2c_dev_desc = {
.setup = byt_i2c_setup,
};
static struct lpss_device_desc bsw_spi_dev_desc = {
static const struct lpss_device_desc bsw_spi_dev_desc = {
.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX
| LPSS_NO_D3_DELAY,
.prv_offset = 0x400,
.setup = lpss_deassert_reset,
};
#define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, }
static const struct x86_cpu_id lpss_cpu_ids[] = {
ICPU(0x37), /* Valleyview, Bay Trail */
ICPU(0x4c), /* Braswell, Cherry Trail */
{}
};
#else
#define LPSS_ADDR(desc) (0UL)
@ -574,6 +604,17 @@ static void acpi_lpss_restore_ctx(struct device *dev,
{
unsigned int i;
for (i = 0; i < LPSS_PRV_REG_COUNT; i++) {
unsigned long offset = i * sizeof(u32);
__lpss_reg_write(pdata->prv_reg_ctx[i], pdata, offset);
dev_dbg(dev, "restoring 0x%08x to LPSS reg at offset 0x%02lx\n",
pdata->prv_reg_ctx[i], offset);
}
}
static void acpi_lpss_d3_to_d0_delay(struct lpss_private_data *pdata)
{
/*
* The following delay is needed or the subsequent write operations may
* fail. The LPSS devices are actually PCI devices and the PCI spec
@ -586,14 +627,34 @@ static void acpi_lpss_restore_ctx(struct device *dev,
delay = 0;
msleep(delay);
for (i = 0; i < LPSS_PRV_REG_COUNT; i++) {
unsigned long offset = i * sizeof(u32);
__lpss_reg_write(pdata->prv_reg_ctx[i], pdata, offset);
dev_dbg(dev, "restoring 0x%08x to LPSS reg at offset 0x%02lx\n",
pdata->prv_reg_ctx[i], offset);
}
static int acpi_lpss_activate(struct device *dev)
{
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
ret = acpi_dev_runtime_resume(dev);
if (ret)
return ret;
acpi_lpss_d3_to_d0_delay(pdata);
/*
* This is called only on ->probe() stage where a device is either in
* known state defined by BIOS or most likely powered off. Due to this
* we have to deassert reset line to be sure that ->probe() will
* recognize the device.
*/
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
lpss_deassert_reset(pdata);
return 0;
}
static void acpi_lpss_dismiss(struct device *dev)
{
acpi_dev_runtime_suspend(dev);
}
#ifdef CONFIG_PM_SLEEP
@ -621,6 +682,8 @@ static int acpi_lpss_resume_early(struct device *dev)
if (ret)
return ret;
acpi_lpss_d3_to_d0_delay(pdata);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_restore_ctx(dev, pdata);
@ -628,6 +691,89 @@ static int acpi_lpss_resume_early(struct device *dev)
}
#endif /* CONFIG_PM_SLEEP */
/* IOSF SB for LPSS island */
#define LPSS_IOSF_UNIT_LPIOEP 0xA0
#define LPSS_IOSF_UNIT_LPIO1 0xAB
#define LPSS_IOSF_UNIT_LPIO2 0xAC
#define LPSS_IOSF_PMCSR 0x84
#define LPSS_PMCSR_D0 0
#define LPSS_PMCSR_D3hot 3
#define LPSS_PMCSR_Dx_MASK GENMASK(1, 0)
#define LPSS_IOSF_GPIODEF0 0x154
#define LPSS_GPIODEF0_DMA1_D3 BIT(2)
#define LPSS_GPIODEF0_DMA2_D3 BIT(3)
#define LPSS_GPIODEF0_DMA_D3_MASK GENMASK(3, 2)
static DEFINE_MUTEX(lpss_iosf_mutex);
static void lpss_iosf_enter_d3_state(void)
{
u32 value1 = 0;
u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK;
u32 value2 = LPSS_PMCSR_D3hot;
u32 mask2 = LPSS_PMCSR_Dx_MASK;
/*
* PMC provides an information about actual status of the LPSS devices.
* Here we read the values related to LPSS power island, i.e. LPSS
* devices, excluding both LPSS DMA controllers, along with SCC domain.
*/
u32 func_dis, d3_sts_0, pmc_status, pmc_mask = 0xfe000ffe;
int ret;
ret = pmc_atom_read(PMC_FUNC_DIS, &func_dis);
if (ret)
return;
mutex_lock(&lpss_iosf_mutex);
ret = pmc_atom_read(PMC_D3_STS_0, &d3_sts_0);
if (ret)
goto exit;
/*
* Get the status of entire LPSS power island per device basis.
* Shutdown both LPSS DMA controllers if and only if all other devices
* are already in D3hot.
*/
pmc_status = (~(d3_sts_0 | func_dis)) & pmc_mask;
if (pmc_status)
goto exit;
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIO1, MBI_CFG_WRITE,
LPSS_IOSF_PMCSR, value2, mask2);
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIO2, MBI_CFG_WRITE,
LPSS_IOSF_PMCSR, value2, mask2);
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIOEP, MBI_CR_WRITE,
LPSS_IOSF_GPIODEF0, value1, mask1);
exit:
mutex_unlock(&lpss_iosf_mutex);
}
static void lpss_iosf_exit_d3_state(void)
{
u32 value1 = LPSS_GPIODEF0_DMA1_D3 | LPSS_GPIODEF0_DMA2_D3;
u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK;
u32 value2 = LPSS_PMCSR_D0;
u32 mask2 = LPSS_PMCSR_Dx_MASK;
mutex_lock(&lpss_iosf_mutex);
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIOEP, MBI_CR_WRITE,
LPSS_IOSF_GPIODEF0, value1, mask1);
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIO2, MBI_CFG_WRITE,
LPSS_IOSF_PMCSR, value2, mask2);
iosf_mbi_modify(LPSS_IOSF_UNIT_LPIO1, MBI_CFG_WRITE,
LPSS_IOSF_PMCSR, value2, mask2);
mutex_unlock(&lpss_iosf_mutex);
}
static int acpi_lpss_runtime_suspend(struct device *dev)
{
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
@ -640,7 +786,17 @@ static int acpi_lpss_runtime_suspend(struct device *dev)
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_save_ctx(dev, pdata);
return acpi_dev_runtime_suspend(dev);
ret = acpi_dev_runtime_suspend(dev);
/*
* This call must be last in the sequence, otherwise PMC will return
* wrong status for devices being about to be powered off. See
* lpss_iosf_enter_d3_state() for further information.
*/
if (lpss_quirks & LPSS_QUIRK_ALWAYS_POWER_ON && iosf_mbi_available())
lpss_iosf_enter_d3_state();
return ret;
}
static int acpi_lpss_runtime_resume(struct device *dev)
@ -648,10 +804,19 @@ static int acpi_lpss_runtime_resume(struct device *dev)
struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
int ret;
/*
* This call is kept first to be in symmetry with
* acpi_lpss_runtime_suspend() one.
*/
if (lpss_quirks & LPSS_QUIRK_ALWAYS_POWER_ON && iosf_mbi_available())
lpss_iosf_exit_d3_state();
ret = acpi_dev_runtime_resume(dev);
if (ret)
return ret;
acpi_lpss_d3_to_d0_delay(pdata);
if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
acpi_lpss_restore_ctx(dev, pdata);
@ -660,6 +825,10 @@ static int acpi_lpss_runtime_resume(struct device *dev)
#endif /* CONFIG_PM */
static struct dev_pm_domain acpi_lpss_pm_domain = {
#ifdef CONFIG_PM
.activate = acpi_lpss_activate,
.dismiss = acpi_lpss_dismiss,
#endif
.ops = {
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
@ -705,8 +874,14 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
}
switch (action) {
case BUS_NOTIFY_ADD_DEVICE:
case BUS_NOTIFY_BIND_DRIVER:
pdev->dev.pm_domain = &acpi_lpss_pm_domain;
break;
case BUS_NOTIFY_DRIVER_NOT_BOUND:
case BUS_NOTIFY_UNBOUND_DRIVER:
pdev->dev.pm_domain = NULL;
break;
case BUS_NOTIFY_ADD_DEVICE:
if (pdata->dev_desc->flags & LPSS_LTR)
return sysfs_create_group(&pdev->dev.kobj,
&lpss_attr_group);
@ -714,7 +889,6 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
case BUS_NOTIFY_DEL_DEVICE:
if (pdata->dev_desc->flags & LPSS_LTR)
sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);
pdev->dev.pm_domain = NULL;
break;
default:
break;
@ -754,11 +928,20 @@ static struct acpi_scan_handler lpss_handler = {
void __init acpi_lpss_init(void)
{
if (!lpt_clk_init()) {
const struct x86_cpu_id *id;
int ret;
ret = lpt_clk_init();
if (ret)
return;
id = x86_match_cpu(lpss_cpu_ids);
if (id)
lpss_quirks |= LPSS_QUIRK_ALWAYS_POWER_ON;
bus_register_notifier(&platform_bus_type, &acpi_lpss_nb);
acpi_scan_add_handler(&lpss_handler);
}
}
#else

10
drivers/base/dd.c
View File

@ -268,6 +268,9 @@ int device_bind_driver(struct device *dev)
ret = driver_sysfs_add(dev);
if (!ret)
driver_bound(dev);
else if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DRIVER_NOT_BOUND, dev);
return ret;
}
EXPORT_SYMBOL_GPL(device_bind_driver);
@ -290,7 +293,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
/* If using pinctrl, bind pins now before probing */
ret = pinctrl_bind_pins(dev);
if (ret)
goto probe_failed;
goto pinctrl_bind_failed;
if (driver_sysfs_add(dev)) {
printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",
@ -334,6 +337,10 @@ static int really_probe(struct device *dev, struct device_driver *drv)
goto done;
probe_failed:
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DRIVER_NOT_BOUND, dev);
pinctrl_bind_failed:
devres_release_all(dev);
driver_sysfs_remove(dev);
dev->driver = NULL;
@ -701,7 +708,6 @@ static void __device_release_driver(struct device *dev)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_UNBOUND_DRIVER,
dev);
}
}

1
drivers/base/power/clock_ops.c
View File

@ -473,6 +473,7 @@ static int pm_clk_notify(struct notifier_block *nb,
enable_clock(dev, NULL);
}
break;
case BUS_NOTIFY_DRIVER_NOT_BOUND:
case BUS_NOTIFY_UNBOUND_DRIVER:
if (clknb->con_ids[0]) {
for (con_id = clknb->con_ids; *con_id; con_id++)

9
drivers/dma/dw/core.c
View File

@ -622,12 +622,17 @@ static void dw_dma_tasklet(unsigned long data)
static irqreturn_t dw_dma_interrupt(int irq, void *dev_id)
{
struct dw_dma *dw = dev_id;
u32 status = dma_readl(dw, STATUS_INT);
u32 status;
/* Check if we have any interrupt from the DMAC which is not in use */
if (!dw->in_use)
return IRQ_NONE;
status = dma_readl(dw, STATUS_INT);
dev_vdbg(dw->dma.dev, "%s: status=0x%x\n", __func__, status);
/* Check if we have any interrupt from the DMAC */
if (!status || !dw->in_use)
if (!status)
return IRQ_NONE;
/*

29
drivers/dma/dw/platform.c
View File

@ -155,7 +155,6 @@ static int dw_probe(struct platform_device *pdev)
struct dw_dma_chip *chip;
struct device *dev = &pdev->dev;
struct resource *mem;
const struct acpi_device_id *id;
struct dw_dma_platform_data *pdata;
int err;
@ -179,11 +178,6 @@ static int dw_probe(struct platform_device *pdev)
pdata = dev_get_platdata(dev);
if (!pdata)
pdata = dw_dma_parse_dt(pdev);
if (!pdata && has_acpi_companion(dev)) {
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (id)
pdata = (struct dw_dma_platform_data *)id->driver_data;
}
chip->dev = dev;
@ -239,7 +233,19 @@ static void dw_shutdown(struct platform_device *pdev)
{
struct dw_dma_chip *chip = platform_get_drvdata(pdev);
/*
* We have to call dw_dma_disable() to stop any ongoing transfer. On
* some platforms we can't do that since DMA device is powered off.
* Moreover we have no possibility to check if the platform is affected
* or not. That's why we call pm_runtime_get_sync() / pm_runtime_put()
* unconditionally. On the other hand we can't use
* pm_runtime_suspended() because runtime PM framework is not fully
* used by the driver.
*/
pm_runtime_get_sync(chip->dev);
dw_dma_disable(chip);
pm_runtime_put_sync_suspend(chip->dev);
clk_disable_unprepare(chip->clk);
}
@ -252,17 +258,8 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);
#endif
#ifdef CONFIG_ACPI
static struct dw_dma_platform_data dw_dma_acpi_pdata = {
.nr_channels = 8,
.is_private = true,
.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
.chan_priority = CHAN_PRIORITY_ASCENDING,
.block_size = 4095,
.nr_masters = 2,
};
static const struct acpi_device_id dw_dma_acpi_id_table[] = {
{ "INTL9C60", (kernel_ulong_t)&dw_dma_acpi_pdata },
{ "INTL9C60", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);

17
drivers/i2c/busses/i2c-designware-baytrail.c
View File

@ -34,8 +34,7 @@ static int get_sem(struct device *dev, u32 *sem)
u32 data;
int ret;
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ, PUNIT_SEMAPHORE,
&data);
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, PUNIT_SEMAPHORE, &data);
if (ret) {
dev_err(dev, "iosf failed to read punit semaphore\n");
return ret;
@ -50,21 +49,19 @@ static void reset_semaphore(struct device *dev)
{
u32 data;
if (iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
PUNIT_SEMAPHORE, &data)) {
if (iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, PUNIT_SEMAPHORE, &data)) {
dev_err(dev, "iosf failed to reset punit semaphore during read\n");
return;
}
data &= ~PUNIT_SEMAPHORE_BIT;
if (iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
PUNIT_SEMAPHORE, data))
if (iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE, PUNIT_SEMAPHORE, data))
dev_err(dev, "iosf failed to reset punit semaphore during write\n");
}
static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
{
u32 sem;
u32 sem = PUNIT_SEMAPHORE_ACQUIRE;
int ret;
unsigned long start, end;
@ -77,8 +74,7 @@ static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
return 0;
/* host driver writes to side band semaphore register */
ret = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
PUNIT_SEMAPHORE, PUNIT_SEMAPHORE_ACQUIRE);
ret = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE, PUNIT_SEMAPHORE, sem);
if (ret) {
dev_err(dev->dev, "iosf punit semaphore request failed\n");
return ret;
@ -102,8 +98,7 @@ static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
dev_err(dev->dev, "punit semaphore timed out, resetting\n");
reset_semaphore(dev->dev);
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
PUNIT_SEMAPHORE, &sem);
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, PUNIT_SEMAPHORE, &sem);
if (ret)
dev_err(dev->dev, "iosf failed to read punit semaphore\n");
else

1
drivers/i2c/busses/i2c-designware-platdrv.c
View File

@ -123,6 +123,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
{ "80860F41", 0 },
{ "808622C1", 0 },
{ "AMD0010", ACCESS_INTR_MASK },
{ "APMC0D0F", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);

4
drivers/powercap/intel_rapl.c
View File

@ -988,7 +988,7 @@ static void set_floor_freq_atom(struct rapl_domain *rd, bool enable)
}
if (!power_ctrl_orig_val)
iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_PMC_READ,
iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_CR_READ,
rapl_defaults->floor_freq_reg_addr,
&power_ctrl_orig_val);
mdata = power_ctrl_orig_val;
@ -996,7 +996,7 @@ static void set_floor_freq_atom(struct rapl_domain *rd, bool enable)
mdata &= ~(0x7f << 8);
mdata |= 1 << 8;
}
iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_PMC_WRITE,
iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_CR_WRITE,
rapl_defaults->floor_freq_reg_addr, mdata);
}

29
drivers/thermal/intel_quark_dts_thermal.c
View File

@ -125,7 +125,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
struct soc_sensor_entry *aux_entry = tzd->devdata;
int ret;
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_ENABLE, &out);
if (ret)
return ret;
@ -137,7 +137,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
if (!aux_entry->locked) {
out |= QRK_DTS_ENABLE_BIT;
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_WRITE,
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE,
QRK_DTS_REG_OFFSET_ENABLE, out);
if (ret)
return ret;
@ -158,7 +158,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
struct soc_sensor_entry *aux_entry = tzd->devdata;
int ret;
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_ENABLE, &out);
if (ret)
return ret;
@ -170,7 +170,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
if (!aux_entry->locked) {
out &= ~QRK_DTS_ENABLE_BIT;
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_WRITE,
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE,
QRK_DTS_REG_OFFSET_ENABLE, out);
if (ret)
@ -192,7 +192,7 @@ static int _get_trip_temp(int trip, int *temp)
u32 out;
mutex_lock(&dts_update_mutex);
status = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
status = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_PTPS, &out);
mutex_unlock(&dts_update_mutex);
@ -236,7 +236,7 @@ static int update_trip_temp(struct soc_sensor_entry *aux_entry,
goto failed;
}
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_PTPS, &store_ptps);
if (ret)
goto failed;
@ -262,7 +262,7 @@ static int update_trip_temp(struct soc_sensor_entry *aux_entry,
out |= (temp_out & QRK_DTS_MASK_TP_THRES) <<
(trip * QRK_DTS_SHIFT_TP);
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_WRITE,
ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE,
QRK_DTS_REG_OFFSET_PTPS, out);
failed:
@ -294,7 +294,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
int ret;
mutex_lock(&dts_update_mutex);
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_TEMP, &out);
mutex_unlock(&dts_update_mutex);
@ -350,11 +350,11 @@ static void free_soc_dts(struct soc_sensor_entry *aux_entry)
if (aux_entry) {
if (!aux_entry->locked) {
mutex_lock(&dts_update_mutex);
iosf_mbi_write(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_WRITE,
iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE,
QRK_DTS_REG_OFFSET_ENABLE,
aux_entry->store_dts_enable);
iosf_mbi_write(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_WRITE,
iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE,
QRK_DTS_REG_OFFSET_PTPS,
aux_entry->store_ptps);
mutex_unlock(&dts_update_mutex);
@ -378,9 +378,8 @@ static struct soc_sensor_entry *alloc_soc_dts(void)
}
/* Check if DTS register is locked */
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
QRK_DTS_REG_OFFSET_LOCK,
&out);
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_LOCK, &out);
if (err)
goto err_ret;
@ -395,14 +394,14 @@ static struct soc_sensor_entry *alloc_soc_dts(void)
/* Store DTS default state if DTS registers are not locked */
if (!aux_entry->locked) {
/* Store DTS default enable for restore on exit */
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_ENABLE,
&aux_entry->store_dts_enable);
if (err)
goto err_ret;
/* Store DTS default PTPS register for restore on exit */
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, QRK_MBI_RMU_READ,
err = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ,
QRK_DTS_REG_OFFSET_PTPS,
&aux_entry->store_ptps);
if (err)

43
drivers/thermal/intel_soc_dts_iosf.c
View File

@ -90,7 +90,7 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzd, int trip,
dts = tzd->devdata;
sensors = dts->sensors;
mutex_lock(&sensors->dts_update_lock);
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTPS, &out);
mutex_unlock(&sensors->dts_update_lock);
if (status)
@ -124,27 +124,27 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
temp_out = (sensors->tj_max - temp) / 1000;
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTPS, &store_ptps);
if (status)
return status;
out = (store_ptps & ~(0xFF << (thres_index * 8)));
out |= (temp_out & 0xFF) << (thres_index * 8);
status = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
status = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTPS, out);
if (status)
return status;
pr_debug("update_trip_temp PTPS = %x\n", out);
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTMC, &out);
if (status)
goto err_restore_ptps;
store_ptmc = out;
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_TE_AUX0 + thres_index,
&te_out);
if (status)
@ -167,12 +167,12 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
out &= ~SOC_DTS_AUX0_ENABLE_BIT;
te_out &= ~int_enable_bit;
}
status = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
status = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTMC, out);
if (status)
goto err_restore_te_out;
status = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
status = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_TE_AUX0 + thres_index,
te_out);
if (status)
@ -182,13 +182,13 @@ static int update_trip_temp(struct intel_soc_dts_sensor_entry *dts,
return 0;
err_restore_te_out:
iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTMC, store_te_out);
err_restore_ptmc:
iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTMC, store_ptmc);
err_restore_ptps:
iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTPS, store_ptps);
/* Nothing we can do if restore fails */
@ -235,7 +235,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
dts = tzd->devdata;
sensors = dts->sensors;
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_TEMP, &out);
if (status)
return status;
@ -259,14 +259,14 @@ static int soc_dts_enable(int id)
u32 out;
int ret;
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_ENABLE, &out);
if (ret)
return ret;
if (!(out & BIT(id))) {
out |= BIT(id);
ret = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
ret = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_ENABLE, out);
if (ret)
return ret;
@ -278,7 +278,7 @@ static int soc_dts_enable(int id)
static void remove_dts_thermal_zone(struct intel_soc_dts_sensor_entry *dts)
{
if (dts) {
iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_ENABLE, dts->store_status);
thermal_zone_device_unregister(dts->tzone);
}
@ -296,9 +296,8 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
int i;
/* Store status to restor on exit */
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
SOC_DTS_OFFSET_ENABLE,
&dts->store_status);
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_ENABLE, &dts->store_status);
if (ret)
goto err_ret;
@ -311,7 +310,7 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts,
}
/* Check if the writable trip we provide is not used by BIOS */
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
ret = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTPS, &store_ptps);
if (ret)
trip_mask = 0;
@ -374,19 +373,19 @@ void intel_soc_dts_iosf_interrupt_handler(struct intel_soc_dts_sensors *sensors)
spin_lock_irqsave(&sensors->intr_notify_lock, flags);
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTMC, &ptmc_out);
ptmc_out |= SOC_DTS_PTMC_APIC_DEASSERT_BIT;
status = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
status = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTMC, ptmc_out);
status = iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_READ,
status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ,
SOC_DTS_OFFSET_PTTSS, &sticky_out);
pr_debug("status %d PTTSS %x\n", status, sticky_out);
if (sticky_out & SOC_DTS_TRIP_MASK) {
int i;
/* reset sticky bit */
status = iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_BUNIT_WRITE,
status = iosf_mbi_write(BT_MBI_UNIT_PMC, MBI_REG_WRITE,
SOC_DTS_OFFSET_PTTSS, sticky_out);
spin_unlock_irqrestore(&sensors->intr_notify_lock, flags);

1
include/linux/device.h
View File

@ -191,6 +191,7 @@ extern int bus_unregister_notifier(struct bus_type *bus,
unbound */
#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000007 /* driver is unbound
from the device */
#define BUS_NOTIFY_DRIVER_NOT_BOUND 0x00000008 /* driver fails to be bound */
extern struct kset *bus_get_kset(struct bus_type *bus);
extern struct klist *bus_get_device_klist(struct bus_type *bus);