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-rw-r--r--drivers/misc/Kconfig16
-rw-r--r--drivers/misc/Makefile2
-rw-r--r--drivers/misc/acer-wmi.c6
-rw-r--r--drivers/misc/asus-laptop.c10
-rw-r--r--drivers/misc/c2port/Kconfig35
-rw-r--r--drivers/misc/c2port/Makefile3
-rw-r--r--drivers/misc/c2port/c2port-duramar2150.c158
-rw-r--r--drivers/misc/c2port/core.c1003
-rw-r--r--drivers/misc/compal-laptop.c12
-rw-r--r--drivers/misc/eeepc-laptop.c12
-rw-r--r--drivers/misc/fujitsu-laptop.c43
-rw-r--r--drivers/misc/ics932s401.c515
-rw-r--r--drivers/misc/intel_menlow.c10
-rw-r--r--drivers/misc/msi-laptop.c16
-rw-r--r--drivers/misc/sgi-gru/Makefile4
-rw-r--r--drivers/misc/sony-laptop.c6
-rw-r--r--drivers/misc/thinkpad_acpi.c86
17 files changed, 1881 insertions, 56 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 9494400..fee7304 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -227,10 +227,20 @@ config HP_WMI
To compile this driver as a module, choose M here: the module will
be called hp-wmi.
+config ICS932S401
+ tristate "Integrated Circuits ICS932S401"
+ depends on I2C && EXPERIMENTAL
+ help
+ If you say yes here you get support for the Integrated Circuits
+ ICS932S401 clock control chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called ics932s401.
+
config MSI_LAPTOP
tristate "MSI Laptop Extras"
depends on X86
- depends on ACPI_EC
+ depends on ACPI
depends on BACKLIGHT_CLASS_DEVICE
---help---
This is a driver for laptops built by MSI (MICRO-STAR
@@ -260,7 +270,7 @@ config PANASONIC_LAPTOP
config COMPAL_LAPTOP
tristate "Compal Laptop Extras"
depends on X86
- depends on ACPI_EC
+ depends on ACPI
depends on BACKLIGHT_CLASS_DEVICE
---help---
This is a driver for laptops built by Compal:
@@ -488,4 +498,6 @@ config SGI_GRU_DEBUG
This option enables addition debugging code for the SGI GRU driver. If
you are unsure, say N.
+source "drivers/misc/c2port/Kconfig"
+
endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 909e246..817f7f5 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
obj-$(CONFIG_HP_WMI) += hp-wmi.o
+obj-$(CONFIG_ICS932S401) += ics932s401.o
obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
obj-$(CONFIG_LKDTM) += lkdtm.o
obj-$(CONFIG_TIFM_CORE) += tifm_core.o
@@ -31,3 +32,4 @@ obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
obj-$(CONFIG_SGI_XP) += sgi-xp/
obj-$(CONFIG_SGI_GRU) += sgi-gru/
obj-$(CONFIG_HP_ILO) += hpilo.o
+obj-$(CONFIG_C2PORT) += c2port/
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index 0532a2d..94c9f911 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -1297,6 +1297,12 @@ static int __init acer_wmi_init(void)
set_quirks();
+ if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
+ interface->capability &= ~ACER_CAP_BRIGHTNESS;
+ printk(ACER_INFO "Brightness must be controlled by "
+ "generic video driver\n");
+ }
+
if (platform_driver_register(&acer_platform_driver)) {
printk(ACER_ERR "Unable to register platform driver.\n");
goto error_platform_register;
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index a9d5228..8fb8b35 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -1208,9 +1208,13 @@ static int __init asus_laptop_init(void)
dev = acpi_get_physical_device(hotk->device->handle);
- result = asus_backlight_init(dev);
- if (result)
- goto fail_backlight;
+ if (!acpi_video_backlight_support()) {
+ result = asus_backlight_init(dev);
+ if (result)
+ goto fail_backlight;
+ } else
+ printk(ASUS_INFO "Brightness ignored, must be controlled by "
+ "ACPI video driver\n");
result = asus_led_init(dev);
if (result)
diff --git a/drivers/misc/c2port/Kconfig b/drivers/misc/c2port/Kconfig
new file mode 100644
index 0000000..e46af9a
--- /dev/null
+++ b/drivers/misc/c2port/Kconfig
@@ -0,0 +1,35 @@
+#
+# C2 port devices
+#
+
+menuconfig C2PORT
+ tristate "Silicon Labs C2 port support (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ default no
+ help
+ This option enables support for Silicon Labs C2 port used to
+ program Silicon micro controller chips (and other 8051 compatible).
+
+ If your board have no such micro controllers you don't need this
+ interface at all.
+
+ To compile this driver as a module, choose M here: the module will
+ be called c2port_core. Note that you also need a client module
+ usually called c2port-*.
+
+ If you are not sure, say N here.
+
+if C2PORT
+
+config C2PORT_DURAMAR_2150
+ tristate "C2 port support for Eurotech's Duramar 2150 (EXPERIMENTAL)"
+ depends on X86 && C2PORT
+ default no
+ help
+ This option enables C2 support for the Eurotech's Duramar 2150
+ on board micro controller.
+
+ To compile this driver as a module, choose M here: the module will
+ be called c2port-duramar2150.
+
+endif # C2PORT
diff --git a/drivers/misc/c2port/Makefile b/drivers/misc/c2port/Makefile
new file mode 100644
index 0000000..3b2cf43
--- /dev/null
+++ b/drivers/misc/c2port/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_C2PORT) += core.o
+
+obj-$(CONFIG_C2PORT_DURAMAR_2150) += c2port-duramar2150.o
diff --git a/drivers/misc/c2port/c2port-duramar2150.c b/drivers/misc/c2port/c2port-duramar2150.c
new file mode 100644
index 0000000..338dcc1
--- /dev/null
+++ b/drivers/misc/c2port/c2port-duramar2150.c
@@ -0,0 +1,158 @@
+/*
+ * Silicon Labs C2 port Linux support for Eurotech Duramar 2150
+ *
+ * Copyright (c) 2008 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (c) 2008 Eurotech S.p.A. <info@eurotech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/c2port.h>
+
+#define DATA_PORT 0x325
+#define DIR_PORT 0x326
+#define C2D (1 << 0)
+#define C2CK (1 << 1)
+
+static DEFINE_MUTEX(update_lock);
+
+/*
+ * C2 port operations
+ */
+
+static void duramar2150_c2port_access(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DIR_PORT);
+
+ /* 0 = input, 1 = output */
+ if (status)
+ outb(v | (C2D | C2CK), DIR_PORT);
+ else
+ /* When access is "off" is important that both lines are set
+ * as inputs or hi-impedence */
+ outb(v & ~(C2D | C2CK), DIR_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static void duramar2150_c2port_c2d_dir(struct c2port_device *dev, int dir)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DIR_PORT);
+
+ if (dir)
+ outb(v & ~C2D, DIR_PORT);
+ else
+ outb(v | C2D, DIR_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static int duramar2150_c2port_c2d_get(struct c2port_device *dev)
+{
+ return inb(DATA_PORT) & C2D;
+}
+
+static void duramar2150_c2port_c2d_set(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DATA_PORT);
+
+ if (status)
+ outb(v | C2D, DATA_PORT);
+ else
+ outb(v & ~C2D, DATA_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static void duramar2150_c2port_c2ck_set(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DATA_PORT);
+
+ if (status)
+ outb(v | C2CK, DATA_PORT);
+ else
+ outb(v & ~C2CK, DATA_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static struct c2port_ops duramar2150_c2port_ops = {
+ .block_size = 512, /* bytes */
+ .blocks_num = 30, /* total flash size: 15360 bytes */
+
+ .access = duramar2150_c2port_access,
+ .c2d_dir = duramar2150_c2port_c2d_dir,
+ .c2d_get = duramar2150_c2port_c2d_get,
+ .c2d_set = duramar2150_c2port_c2d_set,
+ .c2ck_set = duramar2150_c2port_c2ck_set,
+};
+
+static struct c2port_device *duramar2150_c2port_dev;
+
+/*
+ * Module stuff
+ */
+
+static int __init duramar2150_c2port_init(void)
+{
+ struct resource *res;
+ int ret = 0;
+
+ res = request_region(0x325, 2, "c2port");
+ if (!res)
+ return -EBUSY;
+
+ duramar2150_c2port_dev = c2port_device_register("uc",
+ &duramar2150_c2port_ops, NULL);
+ if (!duramar2150_c2port_dev) {
+ ret = -ENODEV;
+ goto free_region;
+ }
+
+ return 0;
+
+free_region:
+ release_region(0x325, 2);
+ return ret;
+}
+
+static void __exit duramar2150_c2port_exit(void)
+{
+ /* Setup the GPIOs as input by default (access = 0) */
+ duramar2150_c2port_access(duramar2150_c2port_dev, 0);
+
+ c2port_device_unregister(duramar2150_c2port_dev);
+
+ release_region(0x325, 2);
+}
+
+module_init(duramar2150_c2port_init);
+module_exit(duramar2150_c2port_exit);
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
+MODULE_DESCRIPTION("Silicon Labs C2 port Linux support for Duramar 2150");
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
new file mode 100644
index 0000000..0207dd5
--- /dev/null
+++ b/drivers/misc/c2port/core.c
@@ -0,0 +1,1003 @@
+/*
+ * Silicon Labs C2 port core Linux support
+ *
+ * Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/idr.h>
+#include <linux/sched.h>
+
+#include <linux/c2port.h>
+
+#define DRIVER_NAME "c2port"
+#define DRIVER_VERSION "0.51.0"
+
+static DEFINE_SPINLOCK(c2port_idr_lock);
+static DEFINE_IDR(c2port_idr);
+
+/*
+ * Local variables
+ */
+
+static struct class *c2port_class;
+
+/*
+ * C2 registers & commands defines
+ */
+
+/* C2 registers */
+#define C2PORT_DEVICEID 0x00
+#define C2PORT_REVID 0x01
+#define C2PORT_FPCTL 0x02
+#define C2PORT_FPDAT 0xB4
+
+/* C2 interface commands */
+#define C2PORT_GET_VERSION 0x01
+#define C2PORT_DEVICE_ERASE 0x03
+#define C2PORT_BLOCK_READ 0x06
+#define C2PORT_BLOCK_WRITE 0x07
+#define C2PORT_PAGE_ERASE 0x08
+
+/* C2 status return codes */
+#define C2PORT_INVALID_COMMAND 0x00
+#define C2PORT_COMMAND_FAILED 0x02
+#define C2PORT_COMMAND_OK 0x0d
+
+/*
+ * C2 port low level signal managements
+ */
+
+static void c2port_reset(struct c2port_device *dev)
+{
+ struct c2port_ops *ops = dev->ops;
+
+ /* To reset the device we have to keep clock line low for at least
+ * 20us.
+ */
+ local_irq_disable();
+ ops->c2ck_set(dev, 0);
+ udelay(25);
+ ops->c2ck_set(dev, 1);
+ local_irq_enable();
+
+ udelay(1);
+}
+
+static void c2port_strobe_ck(struct c2port_device *dev)
+{
+ struct c2port_ops *ops = dev->ops;
+
+ /* During hi-low-hi transition we disable local IRQs to avoid
+ * interructions since C2 port specification says that it must be
+ * shorter than 5us, otherwise the microcontroller may consider
+ * it as a reset signal!
+ */
+ local_irq_disable();
+ ops->c2ck_set(dev, 0);
+ udelay(1);
+ ops->c2ck_set(dev, 1);
+ local_irq_enable();
+
+ udelay(1);
+}
+
+/*
+ * C2 port basic functions
+ */
+
+static void c2port_write_ar(struct c2port_device *dev, u8 addr)
+{
+ struct c2port_ops *ops = dev->ops;
+ int i;
+
+ /* START field */
+ c2port_strobe_ck(dev);
+
+ /* INS field (11b, LSB first) */
+ ops->c2d_dir(dev, 0);
+ ops->c2d_set(dev, 1);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 1);
+ c2port_strobe_ck(dev);
+
+ /* ADDRESS field */
+ for (i = 0; i < 8; i++) {
+ ops->c2d_set(dev, addr & 0x01);
+ c2port_strobe_ck(dev);
+
+ addr >>= 1;
+ }
+
+ /* STOP field */
+ ops->c2d_dir(dev, 1);
+ c2port_strobe_ck(dev);
+}
+
+static int c2port_read_ar(struct c2port_device *dev, u8 *addr)
+{
+ struct c2port_ops *ops = dev->ops;
+ int i;
+
+ /* START field */
+ c2port_strobe_ck(dev);
+
+ /* INS field (10b, LSB first) */
+ ops->c2d_dir(dev, 0);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 1);
+ c2port_strobe_ck(dev);
+
+ /* ADDRESS field */
+ ops->c2d_dir(dev, 1);
+ *addr = 0;
+ for (i = 0; i < 8; i++) {
+ *addr >>= 1; /* shift in 8-bit ADDRESS field LSB first */
+
+ c2port_strobe_ck(dev);
+ if (ops->c2d_get(dev))
+ *addr |= 0x80;
+ }
+
+ /* STOP field */
+ c2port_strobe_ck(dev);
+
+ return 0;
+}
+
+static int c2port_write_dr(struct c2port_device *dev, u8 data)
+{
+ struct c2port_ops *ops = dev->ops;
+ int timeout, i;
+
+ /* START field */
+ c2port_strobe_ck(dev);
+
+ /* INS field (01b, LSB first) */
+ ops->c2d_dir(dev, 0);
+ ops->c2d_set(dev, 1);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+
+ /* LENGTH field (00b, LSB first -> 1 byte) */
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+
+ /* DATA field */
+ for (i = 0; i < 8; i++) {
+ ops->c2d_set(dev, data & 0x01);
+ c2port_strobe_ck(dev);
+
+ data >>= 1;
+ }
+
+ /* WAIT field */
+ ops->c2d_dir(dev, 1);
+ timeout = 20;
+ do {
+ c2port_strobe_ck(dev);
+ if (ops->c2d_get(dev))
+ break;
+
+ udelay(1);
+ } while (--timeout > 0);
+ if (timeout == 0)
+ return -EIO;
+
+ /* STOP field */
+ c2port_strobe_ck(dev);
+
+ return 0;
+}
+
+static int c2port_read_dr(struct c2port_device *dev, u8 *data)
+{
+ struct c2port_ops *ops = dev->ops;
+ int timeout, i;
+
+ /* START field */
+ c2port_strobe_ck(dev);
+
+ /* INS field (00b, LSB first) */
+ ops->c2d_dir(dev, 0);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+
+ /* LENGTH field (00b, LSB first -> 1 byte) */
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+ ops->c2d_set(dev, 0);
+ c2port_strobe_ck(dev);
+
+ /* WAIT field */
+ ops->c2d_dir(dev, 1);
+ timeout = 20;
+ do {
+ c2port_strobe_ck(dev);
+ if (ops->c2d_get(dev))
+ break;
+
+ udelay(1);
+ } while (--timeout > 0);
+ if (timeout == 0)
+ return -EIO;
+
+ /* DATA field */
+ *data = 0;
+ for (i = 0; i < 8; i++) {
+ *data >>= 1; /* shift in 8-bit DATA field LSB first */
+
+ c2port_strobe_ck(dev);
+ if (ops->c2d_get(dev))
+ *data |= 0x80;
+ }
+
+ /* STOP field */
+ c2port_strobe_ck(dev);
+
+ return 0;
+}
+
+static int c2port_poll_in_busy(struct c2port_device *dev)
+{
+ u8 addr;
+ int ret, timeout = 20;
+
+ do {
+ ret = (c2port_read_ar(dev, &addr));
+ if (ret < 0)
+ return -EIO;
+
+ if (!(addr & 0x02))
+ break;
+
+ udelay(1);
+ } while (--timeout > 0);
+ if (timeout == 0)
+ return -EIO;
+
+ return 0;
+}
+
+static int c2port_poll_out_ready(struct c2port_device *dev)
+{
+ u8 addr;
+ int ret, timeout = 10000; /* erase flash needs long time... */
+
+ do {
+ ret = (c2port_read_ar(dev, &addr));
+ if (ret < 0)
+ return -EIO;
+
+ if (addr & 0x01)
+ break;
+
+ udelay(1);
+ } while (--timeout > 0);
+ if (timeout == 0)
+ return -EIO;
+
+ return 0;
+}
+
+/*
+ * sysfs methods
+ */
+
+static ssize_t c2port_show_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", c2dev->name);
+}
+
+static ssize_t c2port_show_flash_blocks_num(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ struct c2port_ops *ops = c2dev->ops;
+
+ return sprintf(buf, "%d\n", ops->blocks_num);
+}
+
+static ssize_t c2port_show_flash_block_size(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ struct c2port_ops *ops = c2dev->ops;
+
+ return sprintf(buf, "%d\n", ops->block_size);
+}
+
+static ssize_t c2port_show_flash_size(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ struct c2port_ops *ops = c2dev->ops;
+
+ return sprintf(buf, "%d\n", ops->blocks_num * ops->block_size);
+}
+
+static ssize_t c2port_show_access(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", c2dev->access);
+}
+
+static ssize_t c2port_store_access(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ struct c2port_ops *ops = c2dev->ops;
+ int status, ret;
+
+ ret = sscanf(buf, "%d", &status);
+ if (ret != 1)
+ return -EINVAL;
+
+ mutex_lock(&c2dev->mutex);
+
+ c2dev->access = !!status;
+
+ /* If access is "on" clock should be HIGH _before_ setting the line
+ * as output and data line should be set as INPUT anyway */
+ if (c2dev->access)
+ ops->c2ck_set(c2dev, 1);
+ ops->access(c2dev, c2dev->access);
+ if (c2dev->access)
+ ops->c2d_dir(c2dev, 1);
+
+ mutex_unlock(&c2dev->mutex);
+
+ return count;
+}
+
+static ssize_t c2port_store_reset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+
+ /* Check the device access status */
+ if (!c2dev->access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+
+ c2port_reset(c2dev);
+ c2dev->flash_access = 0;
+
+ mutex_unlock(&c2dev->mutex);
+
+ return count;
+}
+
+static ssize_t __c2port_show_dev_id(struct c2port_device *dev, char *buf)
+{
+ u8 data;
+ int ret;
+
+ /* Select DEVICEID register for C2 data register accesses */
+ c2port_write_ar(dev, C2PORT_DEVICEID);
+
+ /* Read and return the device ID register */
+ ret = c2port_read_dr(dev, &data);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", data);
+}
+
+static ssize_t c2port_show_dev_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ ssize_t ret;
+
+ /* Check the device access status */
+ if (!c2dev->access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_show_dev_id(c2dev, buf);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0)
+ dev_err(dev, "cannot read from %s\n", c2dev->name);
+
+ return ret;
+}
+
+static ssize_t __c2port_show_rev_id(struct c2port_device *dev, char *buf)
+{
+ u8 data;
+ int ret;
+
+ /* Select REVID register for C2 data register accesses */
+ c2port_write_ar(dev, C2PORT_REVID);
+
+ /* Read and return the revision ID register */
+ ret = c2port_read_dr(dev, &data);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", data);
+}
+
+static ssize_t c2port_show_rev_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ ssize_t ret;
+
+ /* Check the device access status */
+ if (!c2dev->access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_show_rev_id(c2dev, buf);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0)
+ dev_err(c2dev->dev, "cannot read from %s\n", c2dev->name);
+
+ return ret;
+}
+
+static ssize_t c2port_show_flash_access(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", c2dev->flash_access);
+}
+
+static ssize_t __c2port_store_flash_access(struct c2port_device *dev,
+ int status)
+{
+ int ret;
+
+ /* Check the device access status */
+ if (!dev->access)
+ return -EBUSY;
+
+ dev->flash_access = !!status;
+
+ /* If flash_access is off we have nothing to do... */
+ if (dev->flash_access == 0)
+ return 0;
+
+ /* Target the C2 flash programming control register for C2 data
+ * register access */
+ c2port_write_ar(dev, C2PORT_FPCTL);
+
+ /* Write the first keycode to enable C2 Flash programming */
+ ret = c2port_write_dr(dev, 0x02);
+ if (ret < 0)
+ return ret;
+
+ /* Write the second keycode to enable C2 Flash programming */
+ ret = c2port_write_dr(dev, 0x01);
+ if (ret < 0)
+ return ret;
+
+ /* Delay for at least 20ms to ensure the target is ready for
+ * C2 flash programming */
+ mdelay(25);
+
+ return 0;
+}
+
+static ssize_t c2port_store_flash_access(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ int status;
+ ssize_t ret;
+
+ ret = sscanf(buf, "%d", &status);
+ if (ret != 1)
+ return -EINVAL;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_store_flash_access(c2dev, status);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0) {
+ dev_err(c2dev->dev, "cannot enable %s flash programming\n",
+ c2dev->name);
+ return ret;
+ }
+
+ return count;
+}
+
+static ssize_t __c2port_write_flash_erase(struct c2port_device *dev)
+{
+ u8 status;
+ int ret;
+
+ /* Target the C2 flash programming data register for C2 data register
+ * access.
+ */
+ c2port_write_ar(dev, C2PORT_FPDAT);
+
+ /* Send device erase command */
+ c2port_write_dr(dev, C2PORT_DEVICE_ERASE);
+
+ /* Wait for input acknowledge */
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Should check status before starting FLASH access sequence */
+
+ /* Wait for status information */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Read flash programming interface status */
+ ret = c2port_read_dr(dev, &status);
+ if (ret < 0)
+ return ret;
+ if (status != C2PORT_COMMAND_OK)
+ return -EBUSY;
+
+ /* Send a three-byte arming sequence to enable the device erase.
+ * If the sequence is not received correctly, the command will be
+ * ignored.
+ * Sequence is: 0xde, 0xad, 0xa5.
+ */
+ c2port_write_dr(dev, 0xde);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+ c2port_write_dr(dev, 0xad);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+ c2port_write_dr(dev, 0xa5);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static ssize_t c2port_store_flash_erase(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct c2port_device *c2dev = dev_get_drvdata(dev);
+ int ret;
+
+ /* Check the device and flash access status */
+ if (!c2dev->access || !c2dev->flash_access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_write_flash_erase(c2dev);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0) {
+ dev_err(c2dev->dev, "cannot erase %s flash\n", c2dev->name);
+ return ret;
+ }
+
+ return count;
+}
+
+static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct c2port_ops *ops = dev->ops;
+ u8 status, nread = 128;
+ int i, ret;
+
+ /* Check for flash end */
+ if (offset >= ops->block_size * ops->blocks_num)
+ return 0;
+
+ if (ops->block_size * ops->blocks_num - offset < nread)
+ nread = ops->block_size * ops->blocks_num - offset;
+ if (count < nread)
+ nread = count;
+ if (nread == 0)
+ return nread;
+
+ /* Target the C2 flash programming data register for C2 data register
+ * access */
+ c2port_write_ar(dev, C2PORT_FPDAT);
+
+ /* Send flash block read command */
+ c2port_write_dr(dev, C2PORT_BLOCK_READ);
+
+ /* Wait for input acknowledge */
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Should check status before starting FLASH access sequence */
+
+ /* Wait for status information */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Read flash programming interface status */
+ ret = c2port_read_dr(dev, &status);
+ if (ret < 0)
+ return ret;
+ if (status != C2PORT_COMMAND_OK)
+ return -EBUSY;
+
+ /* Send address high byte */
+ c2port_write_dr(dev, offset >> 8);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Send address low byte */
+ c2port_write_dr(dev, offset & 0x00ff);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Send address block size */
+ c2port_write_dr(dev, nread);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Should check status before reading FLASH block */
+
+ /* Wait for status information */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Read flash programming interface status */
+ ret = c2port_read_dr(dev, &status);
+ if (ret < 0)
+ return ret;
+ if (status != C2PORT_COMMAND_OK)
+ return -EBUSY;
+
+ /* Read flash block */
+ for (i = 0; i < nread; i++) {
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = c2port_read_dr(dev, buffer+i);
+ if (ret < 0)
+ return ret;
+ }
+
+ return nread;
+}
+
+static ssize_t c2port_read_flash_data(struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct c2port_device *c2dev =
+ dev_get_drvdata(container_of(kobj,
+ struct device, kobj));
+ ssize_t ret;
+
+ /* Check the device and flash access status */
+ if (!c2dev->access || !c2dev->flash_access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_read_flash_data(c2dev, buffer, offset, count);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0)
+ dev_err(c2dev->dev, "cannot read %s flash\n", c2dev->name);
+
+ return ret;
+}
+
+static ssize_t __c2port_write_flash_data(struct c2port_device *dev,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct c2port_ops *ops = dev->ops;
+ u8 status, nwrite = 128;
+ int i, ret;
+
+ if (nwrite > count)
+ nwrite = count;
+ if (ops->block_size * ops->blocks_num - offset < nwrite)
+ nwrite = ops->block_size * ops->blocks_num - offset;
+
+ /* Check for flash end */
+ if (offset >= ops->block_size * ops->blocks_num)
+ return -EINVAL;
+
+ /* Target the C2 flash programming data register for C2 data register
+ * access */
+ c2port_write_ar(dev, C2PORT_FPDAT);
+
+ /* Send flash block write command */
+ c2port_write_dr(dev, C2PORT_BLOCK_WRITE);
+
+ /* Wait for input acknowledge */
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Should check status before starting FLASH access sequence */
+
+ /* Wait for status information */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Read flash programming interface status */
+ ret = c2port_read_dr(dev, &status);
+ if (ret < 0)
+ return ret;
+ if (status != C2PORT_COMMAND_OK)
+ return -EBUSY;
+
+ /* Send address high byte */
+ c2port_write_dr(dev, offset >> 8);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Send address low byte */
+ c2port_write_dr(dev, offset & 0x00ff);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Send address block size */
+ c2port_write_dr(dev, nwrite);
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Should check status before writing FLASH block */
+
+ /* Wait for status information */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Read flash programming interface status */
+ ret = c2port_read_dr(dev, &status);
+ if (ret < 0)
+ return ret;
+ if (status != C2PORT_COMMAND_OK)
+ return -EBUSY;
+
+ /* Write flash block */
+ for (i = 0; i < nwrite; i++) {
+ ret = c2port_write_dr(dev, *(buffer+i));
+ if (ret < 0)
+ return ret;
+
+ ret = c2port_poll_in_busy(dev);
+ if (ret < 0)
+ return ret;
+
+ }
+
+ /* Wait for last flash write to complete */
+ ret = c2port_poll_out_ready(dev);
+ if (ret < 0)
+ return ret;
+
+ return nwrite;
+}
+
+static ssize_t c2port_write_flash_data(struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct c2port_device *c2dev =
+ dev_get_drvdata(container_of(kobj,
+ struct device, kobj));
+ int ret;
+
+ /* Check the device access status */
+ if (!c2dev->access || !c2dev->flash_access)
+ return -EBUSY;
+
+ mutex_lock(&c2dev->mutex);
+ ret = __c2port_write_flash_data(c2dev, buffer, offset, count);
+ mutex_unlock(&c2dev->mutex);
+
+ if (ret < 0)
+ dev_err(c2dev->dev, "cannot write %s flash\n", c2dev->name);
+
+ return ret;
+}
+
+/*
+ * Class attributes
+ */
+
+static struct device_attribute c2port_attrs[] = {
+ __ATTR(name, 0444, c2port_show_name, NULL),
+ __ATTR(flash_blocks_num, 0444, c2port_show_flash_blocks_num, NULL),
+ __ATTR(flash_block_size, 0444, c2port_show_flash_block_size, NULL),
+ __ATTR(flash_size, 0444, c2port_show_flash_size, NULL),
+ __ATTR(access, 0644, c2port_show_access, c2port_store_access),
+ __ATTR(reset, 0200, NULL, c2port_store_reset),
+ __ATTR(dev_id, 0444, c2port_show_dev_id, NULL),
+ __ATTR(rev_id, 0444, c2port_show_rev_id, NULL),
+
+ __ATTR(flash_access, 0644, c2port_show_flash_access,
+ c2port_store_flash_access),
+ __ATTR(flash_erase, 0200, NULL, c2port_store_flash_erase),
+ __ATTR_NULL,
+};
+
+static struct bin_attribute c2port_bin_attrs = {
+ .attr = {
+ .name = "flash_data",
+ .mode = 0644
+ },
+ .read = c2port_read_flash_data,
+ .write = c2port_write_flash_data,
+ /* .size is computed at run-time */
+};
+
+/*
+ * Exported functions
+ */
+
+struct c2port_device *c2port_device_register(char *name,
+ struct c2port_ops *ops, void *devdata)
+{
+ struct c2port_device *c2dev;
+ int id, ret;
+
+ if (unlikely(!ops) || unlikely(!ops->access) || \
+ unlikely(!ops->c2d_dir) || unlikely(!ops->c2ck_set) || \
+ unlikely(!ops->c2d_get) || unlikely(!ops->c2d_set))
+ return ERR_PTR(-EINVAL);
+
+ c2dev = kmalloc(sizeof(struct c2port_device), GFP_KERNEL);
+ if (unlikely(!c2dev))
+ return ERR_PTR(-ENOMEM);
+
+ ret = idr_pre_get(&c2port_idr, GFP_KERNEL);
+ if (!ret) {
+ ret = -ENOMEM;
+ goto error_idr_get_new;
+ }
+
+ spin_lock_irq(&c2port_idr_lock);
+ ret = idr_get_new(&c2port_idr, c2dev, &id);
+ spin_unlock_irq(&c2port_idr_lock);
+
+ if (ret < 0)
+ goto error_idr_get_new;
+ c2dev->id = id;
+
+ c2dev->dev = device_create(c2port_class, NULL, 0, c2dev,
+ "c2port%d", id);
+ if (unlikely(!c2dev->dev)) {
+ ret = -ENOMEM;
+ goto error_device_create;
+ }
+ dev_set_drvdata(c2dev->dev, c2dev);
+
+ strncpy(c2dev->name, name, C2PORT_NAME_LEN);
+ c2dev->ops = ops;
+ mutex_init(&c2dev->mutex);
+
+ /* Create binary file */
+ c2port_bin_attrs.size = ops->blocks_num * ops->block_size;
+ ret = device_create_bin_file(c2dev->dev, &c2port_bin_attrs);
+ if (unlikely(ret))
+ goto error_device_create_bin_file;
+
+ /* By default C2 port access is off */
+ c2dev->access = c2dev->flash_access = 0;
+ ops->access(c2dev, 0);
+
+ dev_info(c2dev->dev, "C2 port %s added\n", name);
+ dev_info(c2dev->dev, "%s flash has %d blocks x %d bytes "
+ "(%d bytes total)\n",
+ name, ops->blocks_num, ops->block_size,
+ ops->blocks_num * ops->block_size);
+
+ return c2dev;
+
+error_device_create_bin_file:
+ device_destroy(c2port_class, 0);
+
+error_device_create:
+ spin_lock_irq(&c2port_idr_lock);
+ idr_remove(&c2port_idr, id);
+ spin_unlock_irq(&c2port_idr_lock);
+
+error_idr_get_new:
+ kfree(c2dev);
+
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL(c2port_device_register);
+
+void c2port_device_unregister(struct c2port_device *c2dev)
+{
+ if (!c2dev)
+ return;
+
+ dev_info(c2dev->dev, "C2 port %s removed\n", c2dev->name);
+
+ device_remove_bin_file(c2dev->dev, &c2port_bin_attrs);
+ spin_lock_irq(&c2port_idr_lock);
+ idr_remove(&c2port_idr, c2dev->id);
+ spin_unlock_irq(&c2port_idr_lock);
+
+ device_destroy(c2port_class, c2dev->id);
+
+ kfree(c2dev);
+}
+EXPORT_SYMBOL(c2port_device_unregister);
+
+/*
+ * Module stuff
+ */
+
+static int __init c2port_init(void)
+{
+ printk(KERN_INFO "Silicon Labs C2 port support v. " DRIVER_VERSION
+ " - (C) 2007 Rodolfo Giometti\n");
+
+ c2port_class = class_create(THIS_MODULE, "c2port");
+ if (!c2port_class) {
+ printk(KERN_ERR "c2port: failed to allocate class\n");
+ return -ENOMEM;
+ }
+ c2port_class->dev_attrs = c2port_attrs;
+
+ return 0;
+}
+
+static void __exit c2port_exit(void)
+{
+ class_destroy(c2port_class);
+}
+
+module_init(c2port_init);
+module_exit(c2port_exit);
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
+MODULE_DESCRIPTION("Silicon Labs C2 port support v. " DRIVER_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c
index 344b790..11003bb 100644
--- a/drivers/misc/compal-laptop.c
+++ b/drivers/misc/compal-laptop.c
@@ -326,12 +326,14 @@ static int __init compal_init(void)
/* Register backlight stuff */
- compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
- &compalbl_ops);
- if (IS_ERR(compalbl_device))
- return PTR_ERR(compalbl_device);
+ if (!acpi_video_backlight_support()) {
+ compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
+ &compalbl_ops);
+ if (IS_ERR(compalbl_device))
+ return PTR_ERR(compalbl_device);
- compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+ compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+ }
ret = platform_driver_register(&compal_driver);
if (ret)
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index 9ef98b2..02fe2b8 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -825,9 +825,15 @@ static int __init eeepc_laptop_init(void)
return -ENODEV;
}
dev = acpi_get_physical_device(ehotk->device->handle);
- result = eeepc_backlight_init(dev);
- if (result)
- goto fail_backlight;
+
+ if (!acpi_video_backlight_support()) {
+ result = eeepc_backlight_init(dev);
+ if (result)
+ goto fail_backlight;
+ } else
+ printk(EEEPC_INFO "Backlight controlled by ACPI video "
+ "driver\n");
+
result = eeepc_hwmon_init(dev);
if (result)
goto fail_hwmon;
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index d2cf0bf..a7dd3e9 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -464,6 +464,14 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id)
return 0;
}
+static int dmi_check_cb_s6420(const struct dmi_system_id *id)
+{
+ dmi_check_cb_common(id);
+ fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
+ fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
+ return 0;
+}
+
static int dmi_check_cb_p8010(const struct dmi_system_id *id)
{
dmi_check_cb_common(id);
@@ -473,7 +481,7 @@ static int dmi_check_cb_p8010(const struct dmi_system_id *id)
return 0;
}
-static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
+static struct dmi_system_id fujitsu_dmi_table[] = {
{
.ident = "Fujitsu Siemens S6410",
.matches = {
@@ -482,6 +490,13 @@ static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
},
.callback = dmi_check_cb_s6410},
{
+ .ident = "Fujitsu Siemens S6420",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
+ },
+ .callback = dmi_check_cb_s6420},
+ {
.ident = "Fujitsu LifeBook P8010",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
@@ -990,16 +1005,16 @@ static int __init fujitsu_init(void)
/* Register backlight stuff */
- fujitsu->bl_device =
- backlight_device_register("fujitsu-laptop", NULL, NULL,
- &fujitsubl_ops);
- if (IS_ERR(fujitsu->bl_device))
- return PTR_ERR(fujitsu->bl_device);
-
- max_brightness = fujitsu->max_brightness;
-
- fujitsu->bl_device->props.max_brightness = max_brightness - 1;
- fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+ if (!acpi_video_backlight_support()) {
+ fujitsu->bl_device =
+ backlight_device_register("fujitsu-laptop", NULL, NULL,
+ &fujitsubl_ops);
+ if (IS_ERR(fujitsu->bl_device))
+ return PTR_ERR(fujitsu->bl_device);
+ max_brightness = fujitsu->max_brightness;
+ fujitsu->bl_device->props.max_brightness = max_brightness - 1;
+ fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+ }
ret = platform_driver_register(&fujitsupf_driver);
if (ret)
@@ -1035,7 +1050,8 @@ fail_hotkey:
fail_backlight:
- backlight_device_unregister(fujitsu->bl_device);
+ if (fujitsu->bl_device)
+ backlight_device_unregister(fujitsu->bl_device);
fail_platform_device2:
@@ -1062,7 +1078,8 @@ static void __exit fujitsu_cleanup(void)
&fujitsupf_attribute_group);
platform_device_unregister(fujitsu->pf_device);
platform_driver_unregister(&fujitsupf_driver);
- backlight_device_unregister(fujitsu->bl_device);
+ if (fujitsu->bl_device)
+ backlight_device_unregister(fujitsu->bl_device);
acpi_bus_unregister_driver(&acpi_fujitsu_driver);
diff --git a/drivers/misc/ics932s401.c b/drivers/misc/ics932s401.c
new file mode 100644
index 0000000..6e43ab4
--- /dev/null
+++ b/drivers/misc/ics932s401.c
@@ -0,0 +1,515 @@
+/*
+ * A driver for the Integrated Circuits ICS932S401
+ * Copyright (C) 2008 IBM
+ *
+ * Author: Darrick J. Wong <djwong@us.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/log2.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x69, I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(ics932s401);
+
+/* ICS932S401 registers */
+#define ICS932S401_REG_CFG2 0x01
+#define ICS932S401_CFG1_SPREAD 0x01
+#define ICS932S401_REG_CFG7 0x06
+#define ICS932S401_FS_MASK 0x07
+#define ICS932S401_REG_VENDOR_REV 0x07
+#define ICS932S401_VENDOR 1
+#define ICS932S401_VENDOR_MASK 0x0F
+#define ICS932S401_REV 4
+#define ICS932S401_REV_SHIFT 4
+#define ICS932S401_REG_DEVICE 0x09
+#define ICS932S401_DEVICE 11
+#define ICS932S401_REG_CTRL 0x0A
+#define ICS932S401_MN_ENABLED 0x80
+#define ICS932S401_CPU_ALT 0x04
+#define ICS932S401_SRC_ALT 0x08
+#define ICS932S401_REG_CPU_M_CTRL 0x0B
+#define ICS932S401_M_MASK 0x3F
+#define ICS932S401_REG_CPU_N_CTRL 0x0C
+#define ICS932S401_REG_CPU_SPREAD1 0x0D
+#define ICS932S401_REG_CPU_SPREAD2 0x0E
+#define ICS932S401_SPREAD_MASK 0x7FFF
+#define ICS932S401_REG_SRC_M_CTRL 0x0F
+#define ICS932S401_REG_SRC_N_CTRL 0x10
+#define ICS932S401_REG_SRC_SPREAD1 0x11
+#define ICS932S401_REG_SRC_SPREAD2 0x12
+#define ICS932S401_REG_CPU_DIVISOR 0x13
+#define ICS932S401_CPU_DIVISOR_SHIFT 4
+#define ICS932S401_REG_PCISRC_DIVISOR 0x14
+#define ICS932S401_SRC_DIVISOR_MASK 0x0F
+#define ICS932S401_PCI_DIVISOR_SHIFT 4
+
+/* Base clock is 14.318MHz */
+#define BASE_CLOCK 14318
+
+#define NUM_REGS 21
+#define NUM_MIRRORED_REGS 15
+
+static int regs_to_copy[NUM_MIRRORED_REGS] = {
+ ICS932S401_REG_CFG2,
+ ICS932S401_REG_CFG7,
+ ICS932S401_REG_VENDOR_REV,
+ ICS932S401_REG_DEVICE,
+ ICS932S401_REG_CTRL,
+ ICS932S401_REG_CPU_M_CTRL,
+ ICS932S401_REG_CPU_N_CTRL,
+ ICS932S401_REG_CPU_SPREAD1,
+ ICS932S401_REG_CPU_SPREAD2,
+ ICS932S401_REG_SRC_M_CTRL,
+ ICS932S401_REG_SRC_N_CTRL,
+ ICS932S401_REG_SRC_SPREAD1,
+ ICS932S401_REG_SRC_SPREAD2,
+ ICS932S401_REG_CPU_DIVISOR,
+ ICS932S401_REG_PCISRC_DIVISOR,
+};
+
+/* How often do we reread sensors values? (In jiffies) */
+#define SENSOR_REFRESH_INTERVAL (2 * HZ)
+
+/* How often do we reread sensor limit values? (In jiffies) */
+#define LIMIT_REFRESH_INTERVAL (60 * HZ)
+
+struct ics932s401_data {
+ struct attribute_group attrs;
+ struct mutex lock;
+ char sensors_valid;
+ unsigned long sensors_last_updated; /* In jiffies */
+
+ u8 regs[NUM_REGS];
+};
+
+static int ics932s401_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int ics932s401_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int ics932s401_remove(struct i2c_client *client);
+
+static const struct i2c_device_id ics932s401_id[] = {
+ { "ics932s401", ics932s401 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ics932s401_id);
+
+static struct i2c_driver ics932s401_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "ics932s401",
+ },
+ .probe = ics932s401_probe,
+ .remove = ics932s401_remove,
+ .id_table = ics932s401_id,
+ .detect = ics932s401_detect,
+ .address_data = &addr_data,
+};
+
+static struct ics932s401_data *ics932s401_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct ics932s401_data *data = i2c_get_clientdata(client);
+ unsigned long local_jiffies = jiffies;
+ int i, temp;
+
+ mutex_lock(&data->lock);
+ if (time_before(local_jiffies, data->sensors_last_updated +
+ SENSOR_REFRESH_INTERVAL)
+ && data->sensors_valid)
+ goto out;
+
+ /*
+ * Each register must be read as a word and then right shifted 8 bits.
+ * Not really sure why this is; setting the "byte count programming"
+ * register to 1 does not fix this problem.
+ */
+ for (i = 0; i < NUM_MIRRORED_REGS; i++) {
+ temp = i2c_smbus_read_word_data(client, regs_to_copy[i]);
+ data->regs[regs_to_copy[i]] = temp >> 8;
+ }
+
+ data->sensors_last_updated = local_jiffies;
+ data->sensors_valid = 1;
+
+out:
+ mutex_unlock(&data->lock);
+ return data;
+}
+
+static ssize_t show_spread_enabled(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+
+ if (data->regs[ICS932S401_REG_CFG2] & ICS932S401_CFG1_SPREAD)
+ return sprintf(buf, "1\n");
+
+ return sprintf(buf, "0\n");
+}
+
+/* bit to cpu khz map */
+static const int fs_speeds[] = {
+ 266666,
+ 133333,
+ 200000,
+ 166666,
+ 333333,
+ 100000,
+ 400000,
+ 0,
+};
+
+/* clock divisor map */
+static const int divisors[] = {2, 3, 5, 15, 4, 6, 10, 30, 8, 12, 20, 60, 16,
+ 24, 40, 120};
+
+/* Calculate CPU frequency from the M/N registers. */
+static int calculate_cpu_freq(struct ics932s401_data *data)
+{
+ int m, n, freq;
+
+ m = data->regs[ICS932S401_REG_CPU_M_CTRL] & ICS932S401_M_MASK;
+ n = data->regs[ICS932S401_REG_CPU_N_CTRL];
+
+ /* Pull in bits 8 & 9 from the M register */
+ n |= ((int)data->regs[ICS932S401_REG_CPU_M_CTRL] & 0x80) << 1;
+ n |= ((int)data->regs[ICS932S401_REG_CPU_M_CTRL] & 0x40) << 3;
+
+ freq = BASE_CLOCK * (n + 8) / (m + 2);
+ freq /= divisors[data->regs[ICS932S401_REG_CPU_DIVISOR] >>
+ ICS932S401_CPU_DIVISOR_SHIFT];
+
+ return freq;
+}
+
+static ssize_t show_cpu_clock(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+
+ return sprintf(buf, "%d\n", calculate_cpu_freq(data));
+}
+
+static ssize_t show_cpu_clock_sel(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+ int freq;
+
+ if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
+ freq = calculate_cpu_freq(data);
+ else {
+ /* Freq is neatly wrapped up for us */
+ int fid = data->regs[ICS932S401_REG_CFG7] & ICS932S401_FS_MASK;
+ freq = fs_speeds[fid];
+ if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_CPU_ALT) {
+ switch (freq) {
+ case 166666:
+ freq = 160000;
+ break;
+ case 333333:
+ freq = 320000;
+ break;
+ }
+ }
+ }
+
+ return sprintf(buf, "%d\n", freq);
+}
+
+/* Calculate SRC frequency from the M/N registers. */
+static int calculate_src_freq(struct ics932s401_data *data)
+{
+ int m, n, freq;
+
+ m = data->regs[ICS932S401_REG_SRC_M_CTRL] & ICS932S401_M_MASK;
+ n = data->regs[ICS932S401_REG_SRC_N_CTRL];
+
+ /* Pull in bits 8 & 9 from the M register */
+ n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x80) << 1;
+ n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x40) << 3;
+
+ freq = BASE_CLOCK * (n + 8) / (m + 2);
+ freq /= divisors[data->regs[ICS932S401_REG_PCISRC_DIVISOR] &
+ ICS932S401_SRC_DIVISOR_MASK];
+
+ return freq;
+}
+
+static ssize_t show_src_clock(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+
+ return sprintf(buf, "%d\n", calculate_src_freq(data));
+}
+
+static ssize_t show_src_clock_sel(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+ int freq;
+
+ if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
+ freq = calculate_src_freq(data);
+ else
+ /* Freq is neatly wrapped up for us */
+ if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_CPU_ALT &&
+ data->regs[ICS932S401_REG_CTRL] & ICS932S401_SRC_ALT)
+ freq = 96000;
+ else
+ freq = 100000;
+
+ return sprintf(buf, "%d\n", freq);
+}
+
+/* Calculate PCI frequency from the SRC M/N registers. */
+static int calculate_pci_freq(struct ics932s401_data *data)
+{
+ int m, n, freq;
+
+ m = data->regs[ICS932S401_REG_SRC_M_CTRL] & ICS932S401_M_MASK;
+ n = data->regs[ICS932S401_REG_SRC_N_CTRL];
+
+ /* Pull in bits 8 & 9 from the M register */
+ n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x80) << 1;
+ n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x40) << 3;
+
+ freq = BASE_CLOCK * (n + 8) / (m + 2);
+ freq /= divisors[data->regs[ICS932S401_REG_PCISRC_DIVISOR] >>
+ ICS932S401_PCI_DIVISOR_SHIFT];
+
+ return freq;
+}
+
+static ssize_t show_pci_clock(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+
+ return sprintf(buf, "%d\n", calculate_pci_freq(data));
+}
+
+static ssize_t show_pci_clock_sel(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+ int freq;
+
+ if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
+ freq = calculate_pci_freq(data);
+ else
+ freq = 33333;
+
+ return sprintf(buf, "%d\n", freq);
+}
+
+static ssize_t show_value(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf);
+
+static ssize_t show_spread(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf);
+
+static DEVICE_ATTR(spread_enabled, S_IRUGO, show_spread_enabled, NULL);
+static DEVICE_ATTR(cpu_clock_selection, S_IRUGO, show_cpu_clock_sel, NULL);
+static DEVICE_ATTR(cpu_clock, S_IRUGO, show_cpu_clock, NULL);
+static DEVICE_ATTR(src_clock_selection, S_IRUGO, show_src_clock_sel, NULL);
+static DEVICE_ATTR(src_clock, S_IRUGO, show_src_clock, NULL);
+static DEVICE_ATTR(pci_clock_selection, S_IRUGO, show_pci_clock_sel, NULL);
+static DEVICE_ATTR(pci_clock, S_IRUGO, show_pci_clock, NULL);
+static DEVICE_ATTR(usb_clock, S_IRUGO, show_value, NULL);
+static DEVICE_ATTR(ref_clock, S_IRUGO, show_value, NULL);
+static DEVICE_ATTR(cpu_spread, S_IRUGO, show_spread, NULL);
+static DEVICE_ATTR(src_spread, S_IRUGO, show_spread, NULL);
+
+static struct attribute *ics932s401_attr[] =
+{
+ &dev_attr_spread_enabled.attr,
+ &dev_attr_cpu_clock_selection.attr,
+ &dev_attr_cpu_clock.attr,
+ &dev_attr_src_clock_selection.attr,
+ &dev_attr_src_clock.attr,
+ &dev_attr_pci_clock_selection.attr,
+ &dev_attr_pci_clock.attr,
+ &dev_attr_usb_clock.attr,
+ &dev_attr_ref_clock.attr,
+ &dev_attr_cpu_spread.attr,
+ &dev_attr_src_spread.attr,
+ NULL
+};
+
+static ssize_t show_value(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ int x;
+
+ if (devattr == &dev_attr_usb_clock)
+ x = 48000;
+ else if (devattr == &dev_attr_ref_clock)
+ x = BASE_CLOCK;
+ else
+ BUG();
+
+ return sprintf(buf, "%d\n", x);
+}
+
+static ssize_t show_spread(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct ics932s401_data *data = ics932s401_update_device(dev);
+ int reg;
+ unsigned long val;
+
+ if (!(data->regs[ICS932S401_REG_CFG2] & ICS932S401_CFG1_SPREAD))
+ return sprintf(buf, "0%%\n");
+
+ if (devattr == &dev_attr_src_spread)
+ reg = ICS932S401_REG_SRC_SPREAD1;
+ else if (devattr == &dev_attr_cpu_spread)
+ reg = ICS932S401_REG_CPU_SPREAD1;
+ else
+ BUG();
+
+ val = data->regs[reg] | (data->regs[reg + 1] << 8);
+ val &= ICS932S401_SPREAD_MASK;
+
+ /* Scale 0..2^14 to -0.5. */
+ val = 500000 * val / 16384;
+ return sprintf(buf, "-0.%lu%%\n", val);
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int ics932s401_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
+{
+ struct i2c_adapter *adapter = client->adapter;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ if (kind <= 0) {
+ int vendor, device, revision;
+
+ vendor = i2c_smbus_read_word_data(client,
+ ICS932S401_REG_VENDOR_REV);
+ vendor >>= 8;
+ revision = vendor >> ICS932S401_REV_SHIFT;
+ vendor &= ICS932S401_VENDOR_MASK;
+ if (vendor != ICS932S401_VENDOR)
+ return -ENODEV;
+
+ device = i2c_smbus_read_word_data(client,
+ ICS932S401_REG_DEVICE);
+ device >>= 8;
+ if (device != ICS932S401_DEVICE)
+ return -ENODEV;
+
+ if (revision != ICS932S401_REV)
+ dev_info(&adapter->dev, "Unknown revision %d\n",
+ revision);
+ } else
+ dev_dbg(&adapter->dev, "detection forced\n");
+
+ strlcpy(info->type, "ics932s401", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int ics932s401_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ics932s401_data *data;
+ int err;
+
+ data = kzalloc(sizeof(struct ics932s401_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->lock);
+
+ dev_info(&client->dev, "%s chip found\n", client->name);
+
+ /* Register sysfs hooks */
+ data->attrs.attrs = ics932s401_attr;
+ err = sysfs_create_group(&client->dev.kobj, &data->attrs);
+ if (err)
+ goto exit_free;
+
+ return 0;
+
+exit_free:
+ kfree(data);
+exit:
+ return err;
+}
+
+static int ics932s401_remove(struct i2c_client *client)
+{
+ struct ics932s401_data *data = i2c_get_clientdata(client);
+
+ sysfs_remove_group(&client->dev.kobj, &data->attrs);
+ kfree(data);
+ return 0;
+}
+
+static int __init ics932s401_init(void)
+{
+ return i2c_add_driver(&ics932s401_driver);
+}
+
+static void __exit ics932s401_exit(void)
+{
+ i2c_del_driver(&ics932s401_driver);
+}
+
+MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
+MODULE_DESCRIPTION("ICS932S401 driver");
+MODULE_LICENSE("GPL");
+
+module_init(ics932s401_init);
+module_exit(ics932s401_exit);
+
+/* IBM IntelliStation Z30 */
+MODULE_ALIAS("dmi:bvnIBM:*:rn9228:*");
+MODULE_ALIAS("dmi:bvnIBM:*:rn9232:*");
+
+/* IBM x3650/x3550 */
+MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650*");
+MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550*");
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index e00a275..27b7662 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -52,6 +52,11 @@ MODULE_LICENSE("GPL");
#define MEMORY_ARG_CUR_BANDWIDTH 1
#define MEMORY_ARG_MAX_BANDWIDTH 0
+/*
+ * GTHS returning 'n' would mean that [0,n-1] states are supported
+ * In that case max_cstate would be n-1
+ * GTHS returning '0' would mean that no bandwidth control states are supported
+ */
static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
unsigned long *max_state)
{
@@ -71,6 +76,9 @@ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
if (ACPI_FAILURE(status))
return -EFAULT;
+ if (!value)
+ return -EINVAL;
+
*max_state = value - 1;
return 0;
}
@@ -121,7 +129,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev,
if (memory_get_int_max_bandwidth(cdev, &max_state))
return -EFAULT;
- if (max_state < 0 || state > max_state)
+ if (state > max_state)
return -EINVAL;
arg_list.count = 1;
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c
index de898c6..759763d 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/misc/msi-laptop.c
@@ -347,12 +347,16 @@ static int __init msi_init(void)
/* Register backlight stuff */
- msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
- &msibl_ops);
- if (IS_ERR(msibl_device))
- return PTR_ERR(msibl_device);
-
- msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+ if (acpi_video_backlight_support()) {
+ printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
+ "by ACPI video driver\n");
+ } else {
+ msibl_device = backlight_device_register("msi-laptop-bl", NULL,
+ NULL, &msibl_ops);
+ if (IS_ERR(msibl_device))
+ return PTR_ERR(msibl_device);
+ msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+ }
ret = platform_driver_register(&msipf_driver);
if (ret)
diff --git a/drivers/misc/sgi-gru/Makefile b/drivers/misc/sgi-gru/Makefile
index d03597a..9e9170b 100644
--- a/drivers/misc/sgi-gru/Makefile
+++ b/drivers/misc/sgi-gru/Makefile
@@ -1,3 +1,7 @@
+ifdef CONFIG_SGI_GRU_DEBUG
+ EXTRA_CFLAGS += -DDEBUG
+endif
+
obj-$(CONFIG_SGI_GRU) := gru.o
gru-y := grufile.o grumain.o grufault.o grutlbpurge.o gruprocfs.o grukservices.o
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 06f07e1..571b211 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
goto outinput;
}
- if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
+ if (acpi_video_backlight_support()) {
+ printk(KERN_INFO DRV_PFX "brightness ignored, must be "
+ "controlled by ACPI video driver\n");
+ } else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
+ &handle))) {
sony_backlight_device = backlight_device_register("sony", NULL,
NULL,
&sony_backlight_ops);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 4db1cf9..899766e 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -4932,16 +4932,25 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
*/
b = tpacpi_check_std_acpi_brightness_support();
if (b > 0) {
- if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
- printk(TPACPI_NOTICE
- "Lenovo BIOS switched to ACPI backlight "
- "control mode\n");
- }
- if (brightness_enable > 1) {
- printk(TPACPI_NOTICE
- "standard ACPI backlight interface "
- "available, not loading native one...\n");
- return 1;
+
+ if (acpi_video_backlight_support()) {
+ if (brightness_enable > 1) {
+ printk(TPACPI_NOTICE
+ "Standard ACPI backlight interface "
+ "available, not loading native one.\n");
+ return 1;
+ } else if (brightness_enable == 1) {
+ printk(TPACPI_NOTICE
+ "Backlight control force enabled, even if standard "
+ "ACPI backlight interface is available\n");
+ }
+ } else {
+ if (brightness_enable > 1) {
+ printk(TPACPI_NOTICE
+ "Standard ACPI backlight interface not "
+ "available, thinkpad_acpi native "
+ "brightness control enabled\n");
+ }
}
}
@@ -5309,6 +5318,7 @@ static enum fan_control_commands fan_control_commands;
static u8 fan_control_initial_status;
static u8 fan_control_desired_level;
+static u8 fan_control_resume_level;
static int fan_watchdog_maxinterval;
static struct mutex fan_mutex;
@@ -5431,8 +5441,8 @@ static int fan_set_level(int level)
case TPACPI_FAN_WR_ACPI_FANS:
case TPACPI_FAN_WR_TPEC:
- if ((level != TP_EC_FAN_AUTO) &&
- (level != TP_EC_FAN_FULLSPEED) &&
+ if (!(level & TP_EC_FAN_AUTO) &&
+ !(level & TP_EC_FAN_FULLSPEED) &&
((level < 0) || (level > 7)))
return -EINVAL;
@@ -5996,38 +6006,67 @@ static void fan_exit(void)
static void fan_suspend(pm_message_t state)
{
+ int rc;
+
if (!fan_control_allowed)
return;
/* Store fan status in cache */
- fan_get_status_safe(NULL);
+ fan_control_resume_level = 0;
+ rc = fan_get_status_safe(&fan_control_resume_level);
+ if (rc < 0)
+ printk(TPACPI_NOTICE
+ "failed to read fan level for later "
+ "restore during resume: %d\n", rc);
+
+ /* if it is undefined, don't attempt to restore it.
+ * KEEP THIS LAST */
if (tp_features.fan_ctrl_status_undef)
- fan_control_desired_level = TP_EC_FAN_AUTO;
+ fan_control_resume_level = 0;
}
static void fan_resume(void)
{
- u8 saved_fan_level;
u8 current_level = 7;
bool do_set = false;
+ int rc;
/* DSDT *always* updates status on resume */
tp_features.fan_ctrl_status_undef = 0;
- saved_fan_level = fan_control_desired_level;
if (!fan_control_allowed ||
+ !fan_control_resume_level ||
(fan_get_status_safe(&current_level) < 0))
return;
switch (fan_control_access_mode) {
case TPACPI_FAN_WR_ACPI_SFAN:
- do_set = (saved_fan_level > current_level);
+ /* never decrease fan level */
+ do_set = (fan_control_resume_level > current_level);
break;
case TPACPI_FAN_WR_ACPI_FANS:
case TPACPI_FAN_WR_TPEC:
- do_set = ((saved_fan_level & TP_EC_FAN_FULLSPEED) ||
- (saved_fan_level == 7 &&
- !(current_level & TP_EC_FAN_FULLSPEED)));
+ /* never decrease fan level, scale is:
+ * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
+ *
+ * We expect the firmware to set either 7 or AUTO, but we
+ * handle FULLSPEED out of paranoia.
+ *
+ * So, we can safely only restore FULLSPEED or 7, anything
+ * else could slow the fan. Restoring AUTO is useless, at
+ * best that's exactly what the DSDT already set (it is the
+ * slower it uses).
+ *
+ * Always keep in mind that the DSDT *will* have set the
+ * fans to what the vendor supposes is the best level. We
+ * muck with it only to speed the fan up.
+ */
+ if (fan_control_resume_level != 7 &&
+ !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
+ return;
+ else
+ do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
+ (current_level != fan_control_resume_level);
break;
default:
return;
@@ -6035,8 +6074,11 @@ static void fan_resume(void)
if (do_set) {
printk(TPACPI_NOTICE
"restoring fan level to 0x%02x\n",
- saved_fan_level);
- fan_set_level_safe(saved_fan_level);
+ fan_control_resume_level);
+ rc = fan_set_level_safe(fan_control_resume_level);
+ if (rc < 0)
+ printk(TPACPI_NOTICE
+ "failed to restore fan level: %d\n", rc);
}
}
generated by cgit v0.10.2 at 2024-11-10 11:55:42 (GMT)