Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Don't destroy user event fields when removal fails

   User event fields are destroyed before the event is removed from
   visibility. But that can fail leaving the still visible event with no
   fields. Move the destroying of the fields to after the event is
   successfully removed from visibility.

 - Initialize function graph state is fork before calling
   copy_exec_state()

   For non-CLONE_VM forks, copy_exec_state() allocates a new
   task_exec_state. If that allocation fails, ftrace_graph_exit_task()
   will free the tasks ret_stack pointer. Since that pointer is still
   using the parent's ret_stack, it mistakenly frees the parent's
   pointer too.

   Call ftrace_graph_init() on the task first which will NULL out the
   new tasks's ret_stack and if the copy fails, it will not free
   anything.

 - Remove FGRAPH_MAX_INDEX

   The macro FGRAPH_MAX_INDEX was added but never used. Remove it.

 - Save ent_size in function graph printing of nested functions

   The function graph tracer needs to look at the next event to see if
   the next event is the return of the current function entry. If it is,
   it prints a single line:

	ktime_get();

   Otherwise it prints it like a nested function:

	tick_nohz_irq_exit() {
	    ktime_get();
	    kcpustat_irq_exit();
	}

   In order to look at the next event, it must save the current event so
   that it has the information to print from it. It saves the event in
   the iterator descriptor called "ent". What it doesn't save is the
   ent_size of the event which is now used to know if the function graph
   arguments are to be printed. The peek doesn't save the size so the
   size used happens to be that of the size of the last event that was
   seen.

   Save the entry event size in the iterator descriptor so that the
   correct size is used.

 - Fix several errors with freeing data in the histogram code

   The histogram code had a lot of leaked or or incorrect accounting
   when failures happen. Correct them.

 - Fix histogram regression of .percent and .graph modifiers

   Up until 6.3 histogram values could have "percent" or "graph"
   modifiers that changed how they were printed. But a change that added
   restricting histograms values from being strings, stack traces and
   other modifiers inadvertently prevented them from using the percent
   and graph modifiers, which were legal use cases for values.

   Put back the percent and graph modifiers.

 - Fix various typos in the comments

 - Set the trace_clock before initializing a histogram with clock
   argument

   The histogram API allows the user to specific which trace clock to
   use via a "clock=" string. The histogram is set up first before the
   clock is checked. If the passed in clock is not valid, it exits
   without fully fixing up the histogram leaving it on the list and a
   use-after-free can trigger.

   Update the clock argument first and if it fails then exit gracefully
   before the histogram trigger is placed on any lists.

 - Restore :mod: trailer after parsing in ftrace_set_clr_event

   The function ftrace_set_clr_event() modifies the parse string and
   needs to put it back to what was passed in. It searches for ":mod:"
   via a strsep() but fails to put back the first ':' in the string.

   Add back the ':' in the passed in string.

 - Take trace_array reference when opening a tracer options file

   The options files are dynamically created and some tracers add their
   own options. When a tracer adds their own list of options, the
   trace_array holding them has an array to hold the list of options for
   each tracer. This array increases in size via a krealloc(), and the
   new entry gets a newly allocated array to hold the options of the new
   tracer being added.

   The element in each entry of the tracer's option array holds a
   pointer back to the trace_array, a pointer to the tracer it is
   associated to, a pointer to the flags of the option.

   The issue is that these arrays are freed when the trace_array is
   freed when its instance it represents is removed from the instances
   directory. There's a race that an open of one of these options files
   can happen when the instance is being removed.

   Add a new helper function to be called by the open function of the
   options file to iterate all existing trace_arrays under a lock and
   find the one that has the given option element in one of it's tracer
   arrays. If found, then update the associated trace_array's reference
   counter to keep it from being freed. If not found, have the open call
   return -ENODEV.

 - Disable interrupts when acquiring the lock in rb_wake_up_waiters()

   The function rb_wake_up_waiters() assumes it will be called in
   interrupt context and does not disable irqs when taking
   cpu_buffer->reader_lock, which can be called in hard interrupt
   context. The issue is in PREEMPT_RT, this function is called in
   thread context leaving this lock open to a deadlock.

   Take the lock with interrupts disabled.

 - Use rcu_assign_pointer() for tmp_ops filter hash

   The tmp_ops used in update_ftrace_direct_mod() assigns its
   filter_hash field directly, but that field is annotated as __rcu and
   sparse complains. Assign it with rcu_assign_pointer()

 - Fix use-after-free in enable_trigger_private_data_free()

   The trace_event_call is accessed through the event_trigger_data's
   trace_event_file pointer to put the trace_event_call on freeing. The
   issue is that the trace_event_file data may have been freed already
   causing a use-after-free. Add a field to the event_trigger_data that
   points directly to the trace_event_call so that it can decrement its
   reference directly without needing to go through the
   trace_event_file.

 - Fix accounting of buffer data remote headers

   trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount
   the number of pages is needed for the asked for size as it doesn't
   take into account the meta data on each page. Add a helper function
   to do the calculation properly and use that in these functions.

 - Catch nr_page_va overflow in ring_buffer_desc sizing

   The number of pages per remote ring buffer is capped by
   ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to
   overflow that field would silently allocate a descriptor smaller than
   what was asked for.

 - Do not resize the subbuf order if any per_cpu buffer is disabled

   The mmapping of ring buffers disables resizing the subbuffers, but it
   is done per-cpu whereas the subbuf size change is done for all the
   per_cpu buffers under the buffer->mutex. It could change the size of
   some while the mapping is happening on others. Have the resize of the
   subbuf order check all the per_cpu buffers under the lock to see if
   any of them is disabled before starting and causing an inconsistency
   between buffers that are being mapped.

* tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits)
  ring-buffer: Check resize_disabled before publishing the new subbuf order
  tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  tracing/remotes: Account for ring buffer page header in size calculation
  tracing: Don't dereference trace_event_file in deferred trigger free
  ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  tracing: Take trace_array reference when opening a tracer options file
  tracing: Fix ring_buffer_read_page_size() kernel-doc
  tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event()
  tracing: Fix memory corruption from a "STACKTRACE" histogram key
  tracing: Fix memory corruption from the histogram stacktrace modifier
  tracing: Undo the registration when enabling the histogram trigger fails
  tracing: Take the reference before publishing the named histogram trigger
  tracing: Set the trace clock before registering the histogram trigger
  tracing: Fix typo "preceeded" in comment
  tracing: Fix typo "availabe" in comment
  tracing: Let histogram values keep the percent and graph modifiers
  tracing: Keep the entry count when the histogram stats allocation fails
  tracing: Free histogram the field rejected for a bad modifier
  tracing: Free histogram the var ref when its initialization fails
  ...

4 files changed, 461 insertions, 0 deletions

diff --git a/include/sound/ac97/codec.h b/include/sound/ac97/codec.h
new file mode 100644
index 000000000..69aa7ee15
--- /dev/null
+++ b/include/sound/ac97/codec.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ */
+
+#ifndef __SOUND_AC97_CODEC2_H
+#define __SOUND_AC97_CODEC2_H
+
+#include <linux/device.h>
+
+#define AC97_ID(vendor_id1, vendor_id2) \
+	((((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff))
+#define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \
+	{ .id = (((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff), \
+	  .mask = (((mask_id1) & 0xffff) << 16) | ((mask_id2) & 0xffff), \
+	  .data = (_data) }
+
+struct ac97_controller;
+struct clk;
+
+/**
+ * struct ac97_id - matches a codec device and driver on an ac97 bus
+ * @id: The significant bits if the codec vendor ID1 and ID2
+ * @mask: Bitmask specifying which bits of the id field are significant when
+ *	  matching. A driver binds to a device when :
+ *        ((vendorID1 << 8 | vendorID2) & (mask_id1 << 8 | mask_id2)) == id.
+ * @data: Private data used by the driver.
+ */
+struct ac97_id {
+	unsigned int		id;
+	unsigned int		mask;
+	void			*data;
+};
+
+/**
+ * struct ac97_codec_device - a ac97 codec
+ * @dev: the core device
+ * @vendor_id: the vendor_id of the codec, as sensed on the AC-link
+ * @num: the codec number, 0 is primary, 1 is first slave, etc ...
+ * @clk: the clock BIT_CLK provided by the codec
+ * @ac97_ctrl: ac97 digital controller on the same AC-link
+ *
+ * This is the device instantiated for each codec living on a AC-link. There are
+ * normally 0 to 4 codec devices per AC-link, and all of them are controlled by
+ * an AC97 digital controller.
+ */
+struct ac97_codec_device {
+	struct device		dev;
+	unsigned int		vendor_id;
+	unsigned int		num;
+	struct clk		*clk;
+	struct ac97_controller	*ac97_ctrl;
+};
+
+/**
+ * struct ac97_codec_driver - a ac97 codec driver
+ * @driver: the device driver structure
+ * @probe: the function called when a ac97_codec_device is matched
+ * @remove: the function called when the device is unbound/removed
+ * @shutdown: shutdown function (might be NULL)
+ * @id_table: ac97 vendor_id match table, { } member terminated
+ */
+struct ac97_codec_driver {
+	struct device_driver	driver;
+	int			(*probe)(struct ac97_codec_device *);
+	void			(*remove)(struct ac97_codec_device *dev);
+	void			(*shutdown)(struct ac97_codec_device *);
+	const struct ac97_id	*id_table;
+};
+
+static inline struct ac97_codec_device *to_ac97_device(struct device *d)
+{
+	return container_of(d, struct ac97_codec_device, dev);
+}
+
+#define to_ac97_driver(__drv) container_of_const(__drv, struct ac97_codec_driver, driver)
+
+#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
+int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);
+void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);
+#else
+static inline int
+snd_ac97_codec_driver_register(struct ac97_codec_driver *drv)
+{
+	return 0;
+}
+static inline void
+snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv)
+{
+}
+#endif
+
+
+static inline struct device *
+ac97_codec_dev2dev(struct ac97_codec_device *adev)
+{
+	return &adev->dev;
+}
+
+static inline void *ac97_get_drvdata(struct ac97_codec_device *adev)
+{
+	return dev_get_drvdata(ac97_codec_dev2dev(adev));
+}
+
+static inline void ac97_set_drvdata(struct ac97_codec_device *adev,
+				    void *data)
+{
+	dev_set_drvdata(ac97_codec_dev2dev(adev), data);
+}
+
+static inline void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev)
+{
+	return NULL;
+}
+
+#endif
diff --git a/include/sound/ac97/compat.h b/include/sound/ac97/compat.h
new file mode 100644
index 000000000..57e19afa3
--- /dev/null
+++ b/include/sound/ac97/compat.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ *
+ * This file is for backward compatibility with snd_ac97 structure and its
+ * multiple usages, such as the snd_ac97_bus and snd_ac97_build_ops.
+ */
+
+#ifndef AC97_COMPAT_H
+#define AC97_COMPAT_H
+
+#include <sound/ac97_codec.h>
+
+struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev);
+void snd_ac97_compat_release(struct snd_ac97 *ac97);
+
+#endif
diff --git a/include/sound/ac97/controller.h b/include/sound/ac97/controller.h
new file mode 100644
index 000000000..d5895ea39
--- /dev/null
+++ b/include/sound/ac97/controller.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ */
+
+#ifndef AC97_CONTROLLER_H
+#define AC97_CONTROLLER_H
+
+#include <linux/device.h>
+#include <linux/list.h>
+
+#define AC97_BUS_MAX_CODECS 4
+#define AC97_SLOTS_AVAILABLE_ALL 0xf
+
+struct ac97_controller_ops;
+
+/**
+ * struct ac97_controller - The AC97 controller of the AC-Link
+ * @ops:		the AC97 operations.
+ * @controllers:	linked list of all existing controllers.
+ * @adap:		the shell device ac97-%d, ie. ac97 adapter
+ * @nr:			the number of the shell device
+ * @slots_available:	the mask of accessible/scanable codecs.
+ * @parent:		the device providing the AC97 controller.
+ * @codecs:		the 4 possible AC97 codecs (NULL if none found).
+ * @codecs_pdata:	platform_data for each codec (NULL if no pdata).
+ *
+ * This structure is internal to AC97 bus, and should not be used by the
+ * controllers themselves, excepting for using @dev.
+ */
+struct ac97_controller {
+	const struct ac97_controller_ops *ops;
+	struct list_head controllers;
+	struct device adap;
+	int nr;
+	unsigned short slots_available;
+	struct device *parent;
+	struct ac97_codec_device *codecs[AC97_BUS_MAX_CODECS];
+	void *codecs_pdata[AC97_BUS_MAX_CODECS];
+};
+
+/**
+ * struct ac97_controller_ops - The AC97 operations
+ * @reset:	Cold reset of the AC97 AC-Link.
+ * @warm_reset:	Warm reset of the AC97 AC-Link.
+ * @read:	Read of a single AC97 register.
+ *		Returns the register value or a negative error code.
+ * @write:	Write of a single AC97 register.
+ *
+ * These are the basic operation an AC97 controller must provide for an AC97
+ * access functions. Amongst these, all but the last 2 are mandatory.
+ * The slot number is also known as the AC97 codec number, between 0 and 3.
+ */
+struct ac97_controller_ops {
+	void (*reset)(struct ac97_controller *adrv);
+	void (*warm_reset)(struct ac97_controller *adrv);
+	int (*write)(struct ac97_controller *adrv, int slot,
+		     unsigned short reg, unsigned short val);
+	int (*read)(struct ac97_controller *adrv, int slot, unsigned short reg);
+};
+
+#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
+struct ac97_controller *snd_ac97_controller_register(
+	const struct ac97_controller_ops *ops, struct device *dev,
+	unsigned short slots_available);
+void snd_ac97_controller_unregister(struct ac97_controller *ac97_ctrl);
+#else
+static inline struct ac97_controller *
+snd_ac97_controller_register(const struct ac97_controller_ops *ops,
+			     struct device *dev,
+			     unsigned short slots_available)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline void
+snd_ac97_controller_unregister(struct ac97_controller *ac97_ctrl)
+{
+}
+#endif
+
+#endif
diff --git a/include/sound/ac97/regs.h b/include/sound/ac97/regs.h
new file mode 100644
index 000000000..843f73f37
--- /dev/null
+++ b/include/sound/ac97/regs.h
@@ -0,0 +1,246 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *  Universal interface for Audio Codec '97
+ *
+ *  For more details look to AC '97 component specification revision 2.1
+ *  by Intel Corporation (http://developer.intel.com).
+ */
+/*
+ *  AC'97 codec registers
+ */
+
+#define AC97_RESET		0x00	/* Reset */
+#define AC97_MASTER		0x02	/* Master Volume */
+#define AC97_HEADPHONE		0x04	/* Headphone Volume (optional) */
+#define AC97_MASTER_MONO	0x06	/* Master Volume Mono (optional) */
+#define AC97_MASTER_TONE	0x08	/* Master Tone (Bass & Treble) (optional) */
+#define AC97_PC_BEEP		0x0a	/* PC Beep Volume (optional) */
+#define AC97_PHONE		0x0c	/* Phone Volume (optional) */
+#define AC97_MIC		0x0e	/* MIC Volume */
+#define AC97_LINE		0x10	/* Line In Volume */
+#define AC97_CD			0x12	/* CD Volume */
+#define AC97_VIDEO		0x14	/* Video Volume (optional) */
+#define AC97_AUX		0x16	/* AUX Volume (optional) */
+#define AC97_PCM		0x18	/* PCM Volume */
+#define AC97_REC_SEL		0x1a	/* Record Select */
+#define AC97_REC_GAIN		0x1c	/* Record Gain */
+#define AC97_REC_GAIN_MIC	0x1e	/* Record Gain MIC (optional) */
+#define AC97_GENERAL_PURPOSE	0x20	/* General Purpose (optional) */
+#define AC97_3D_CONTROL		0x22	/* 3D Control (optional) */
+#define AC97_INT_PAGING		0x24	/* Audio Interrupt & Paging (AC'97 2.3) */
+#define AC97_POWERDOWN		0x26	/* Powerdown control / status */
+/* range 0x28-0x3a - AUDIO AC'97 2.0 extensions */
+#define AC97_EXTENDED_ID	0x28	/* Extended Audio ID */
+#define AC97_EXTENDED_STATUS	0x2a	/* Extended Audio Status and Control */
+#define AC97_PCM_FRONT_DAC_RATE 0x2c	/* PCM Front DAC Rate */
+#define AC97_PCM_SURR_DAC_RATE	0x2e	/* PCM Surround DAC Rate */
+#define AC97_PCM_LFE_DAC_RATE	0x30	/* PCM LFE DAC Rate */
+#define AC97_PCM_LR_ADC_RATE	0x32	/* PCM LR ADC Rate */
+#define AC97_PCM_MIC_ADC_RATE	0x34	/* PCM MIC ADC Rate */
+#define AC97_CENTER_LFE_MASTER	0x36	/* Center + LFE Master Volume */
+#define AC97_SURROUND_MASTER	0x38	/* Surround (Rear) Master Volume */
+#define AC97_SPDIF		0x3a	/* S/PDIF control */
+/* range 0x3c-0x58 - MODEM */
+#define AC97_EXTENDED_MID	0x3c	/* Extended Modem ID */
+#define AC97_EXTENDED_MSTATUS	0x3e	/* Extended Modem Status and Control */
+#define AC97_LINE1_RATE		0x40	/* Line1 DAC/ADC Rate */
+#define AC97_LINE2_RATE		0x42	/* Line2 DAC/ADC Rate */
+#define AC97_HANDSET_RATE	0x44	/* Handset DAC/ADC Rate */
+#define AC97_LINE1_LEVEL	0x46	/* Line1 DAC/ADC Level */
+#define AC97_LINE2_LEVEL	0x48	/* Line2 DAC/ADC Level */
+#define AC97_HANDSET_LEVEL	0x4a	/* Handset DAC/ADC Level */
+#define AC97_GPIO_CFG		0x4c	/* GPIO Configuration */
+#define AC97_GPIO_POLARITY	0x4e	/* GPIO Pin Polarity/Type, 0=low, 1=high active */
+#define AC97_GPIO_STICKY	0x50	/* GPIO Pin Sticky, 0=not, 1=sticky */
+#define AC97_GPIO_WAKEUP	0x52	/* GPIO Pin Wakeup, 0=no int, 1=yes int */
+#define AC97_GPIO_STATUS	0x54	/* GPIO Pin Status, slot 12 */
+#define AC97_MISC_AFE		0x56	/* Miscellaneous Modem AFE Status and Control */
+/* range 0x5a-0x7b - Vendor Specific */
+#define AC97_VENDOR_ID1		0x7c	/* Vendor ID1 */
+#define AC97_VENDOR_ID2		0x7e	/* Vendor ID2 / revision */
+/* range 0x60-0x6f (page 1) - extended codec registers */
+#define AC97_CODEC_CLASS_REV	0x60	/* Codec Class/Revision */
+#define AC97_PCI_SVID		0x62	/* PCI Subsystem Vendor ID */
+#define AC97_PCI_SID		0x64	/* PCI Subsystem ID */
+#define AC97_FUNC_SELECT	0x66	/* Function Select */
+#define AC97_FUNC_INFO		0x68	/* Function Information */
+#define AC97_SENSE_INFO		0x6a	/* Sense Details */
+
+/* volume controls */
+#define AC97_MUTE_MASK_MONO	0x8000
+#define AC97_MUTE_MASK_STEREO	0x8080
+
+/* slot allocation */
+#define AC97_SLOT_TAG		0
+#define AC97_SLOT_CMD_ADDR	1
+#define AC97_SLOT_CMD_DATA	2
+#define AC97_SLOT_PCM_LEFT	3
+#define AC97_SLOT_PCM_RIGHT	4
+#define AC97_SLOT_MODEM_LINE1	5
+#define AC97_SLOT_PCM_CENTER	6
+#define AC97_SLOT_MIC		6	/* input */
+#define AC97_SLOT_SPDIF_LEFT1	6
+#define AC97_SLOT_PCM_SLEFT	7	/* surround left */
+#define AC97_SLOT_PCM_LEFT_0	7	/* double rate operation */
+#define AC97_SLOT_SPDIF_LEFT	7
+#define AC97_SLOT_PCM_SRIGHT	8	/* surround right */
+#define AC97_SLOT_PCM_RIGHT_0	8	/* double rate operation */
+#define AC97_SLOT_SPDIF_RIGHT	8
+#define AC97_SLOT_LFE		9
+#define AC97_SLOT_SPDIF_RIGHT1	9
+#define AC97_SLOT_MODEM_LINE2	10
+#define AC97_SLOT_PCM_LEFT_1	10	/* double rate operation */
+#define AC97_SLOT_SPDIF_LEFT2	10
+#define AC97_SLOT_HANDSET	11	/* output */
+#define AC97_SLOT_PCM_RIGHT_1	11	/* double rate operation */
+#define AC97_SLOT_SPDIF_RIGHT2	11
+#define AC97_SLOT_MODEM_GPIO	12	/* modem GPIO */
+#define AC97_SLOT_PCM_CENTER_1	12	/* double rate operation */
+
+/* basic capabilities (reset register) */
+#define AC97_BC_DEDICATED_MIC	0x0001	/* Dedicated Mic PCM In Channel */
+#define AC97_BC_RESERVED1	0x0002	/* Reserved (was Modem Line Codec support) */
+#define AC97_BC_BASS_TREBLE	0x0004	/* Bass & Treble Control */
+#define AC97_BC_SIM_STEREO	0x0008	/* Simulated stereo */
+#define AC97_BC_HEADPHONE	0x0010	/* Headphone Out Support */
+#define AC97_BC_LOUDNESS	0x0020	/* Loudness (bass boost) Support */
+#define AC97_BC_16BIT_DAC	0x0000	/* 16-bit DAC resolution */
+#define AC97_BC_18BIT_DAC	0x0040	/* 18-bit DAC resolution */
+#define AC97_BC_20BIT_DAC	0x0080	/* 20-bit DAC resolution */
+#define AC97_BC_DAC_MASK	0x00c0
+#define AC97_BC_16BIT_ADC	0x0000	/* 16-bit ADC resolution */
+#define AC97_BC_18BIT_ADC	0x0100	/* 18-bit ADC resolution */
+#define AC97_BC_20BIT_ADC	0x0200	/* 20-bit ADC resolution */
+#define AC97_BC_ADC_MASK	0x0300
+#define AC97_BC_3D_TECH_ID_MASK	0x7c00	/* Per-vendor ID of 3D enhancement */
+
+/* general purpose */
+#define AC97_GP_DRSS_MASK	0x0c00	/* double rate slot select */
+#define AC97_GP_DRSS_1011	0x0000	/* LR(C) 10+11(+12) */
+#define AC97_GP_DRSS_78		0x0400	/* LR 7+8 */
+
+/* powerdown bits */
+#define AC97_PD_ADC_STATUS	0x0001	/* ADC status (RO) */
+#define AC97_PD_DAC_STATUS	0x0002	/* DAC status (RO) */
+#define AC97_PD_MIXER_STATUS	0x0004	/* Analog mixer status (RO) */
+#define AC97_PD_VREF_STATUS	0x0008	/* Vref status (RO) */
+#define AC97_PD_PR0		0x0100	/* Power down PCM ADCs and input MUX */
+#define AC97_PD_PR1		0x0200	/* Power down PCM front DAC */
+#define AC97_PD_PR2		0x0400	/* Power down Mixer (Vref still on) */
+#define AC97_PD_PR3		0x0800	/* Power down Mixer (Vref off) */
+#define AC97_PD_PR4		0x1000	/* Power down AC-Link */
+#define AC97_PD_PR5		0x2000	/* Disable internal clock usage */
+#define AC97_PD_PR6		0x4000	/* Headphone amplifier */
+#define AC97_PD_EAPD		0x8000	/* External Amplifer Power Down (EAPD) */
+
+/* extended audio ID bit defines */
+#define AC97_EI_VRA		0x0001	/* Variable bit rate supported */
+#define AC97_EI_DRA		0x0002	/* Double rate supported */
+#define AC97_EI_SPDIF		0x0004	/* S/PDIF out supported */
+#define AC97_EI_VRM		0x0008	/* Variable bit rate supported for MIC */
+#define AC97_EI_DACS_SLOT_MASK	0x0030	/* DACs slot assignment */
+#define AC97_EI_DACS_SLOT_SHIFT	4
+#define AC97_EI_CDAC		0x0040	/* PCM Center DAC available */
+#define AC97_EI_SDAC		0x0080	/* PCM Surround DACs available */
+#define AC97_EI_LDAC		0x0100	/* PCM LFE DAC available */
+#define AC97_EI_AMAP		0x0200	/* indicates optional slot/DAC mapping based on codec ID */
+#define AC97_EI_REV_MASK	0x0c00	/* AC'97 revision mask */
+#define AC97_EI_REV_22		0x0400	/* AC'97 revision 2.2 */
+#define AC97_EI_REV_23		0x0800	/* AC'97 revision 2.3 */
+#define AC97_EI_REV_SHIFT	10
+#define AC97_EI_ADDR_MASK	0xc000	/* physical codec ID (address) */
+#define AC97_EI_ADDR_SHIFT	14
+
+/* extended audio status and control bit defines */
+#define AC97_EA_VRA		0x0001	/* Variable bit rate enable bit */
+#define AC97_EA_DRA		0x0002	/* Double-rate audio enable bit */
+#define AC97_EA_SPDIF		0x0004	/* S/PDIF out enable bit */
+#define AC97_EA_VRM		0x0008	/* Variable bit rate for MIC enable bit */
+#define AC97_EA_SPSA_SLOT_MASK	0x0030	/* Mask for slot assignment bits */
+#define AC97_EA_SPSA_SLOT_SHIFT 4
+#define AC97_EA_SPSA_3_4	0x0000	/* Slot assigned to 3 & 4 */
+#define AC97_EA_SPSA_7_8	0x0010	/* Slot assigned to 7 & 8 */
+#define AC97_EA_SPSA_6_9	0x0020	/* Slot assigned to 6 & 9 */
+#define AC97_EA_SPSA_10_11	0x0030	/* Slot assigned to 10 & 11 */
+#define AC97_EA_CDAC		0x0040	/* PCM Center DAC is ready (Read only) */
+#define AC97_EA_SDAC		0x0080	/* PCM Surround DACs are ready (Read only) */
+#define AC97_EA_LDAC		0x0100	/* PCM LFE DAC is ready (Read only) */
+#define AC97_EA_MDAC		0x0200	/* MIC ADC is ready (Read only) */
+#define AC97_EA_SPCV		0x0400	/* S/PDIF configuration valid (Read only) */
+#define AC97_EA_PRI		0x0800	/* Turns the PCM Center DAC off */
+#define AC97_EA_PRJ		0x1000	/* Turns the PCM Surround DACs off */
+#define AC97_EA_PRK		0x2000	/* Turns the PCM LFE DAC off */
+#define AC97_EA_PRL		0x4000	/* Turns the MIC ADC off */
+
+/* S/PDIF control bit defines */
+#define AC97_SC_PRO		0x0001	/* Professional status */
+#define AC97_SC_NAUDIO		0x0002	/* Non audio stream */
+#define AC97_SC_COPY		0x0004	/* Copyright status */
+#define AC97_SC_PRE		0x0008	/* Preemphasis status */
+#define AC97_SC_CC_MASK		0x07f0	/* Category Code mask */
+#define AC97_SC_CC_SHIFT	4
+#define AC97_SC_L		0x0800	/* Generation Level status */
+#define AC97_SC_SPSR_MASK	0x3000	/* S/PDIF Sample Rate bits */
+#define AC97_SC_SPSR_SHIFT	12
+#define AC97_SC_SPSR_44K	0x0000	/* Use 44.1kHz Sample rate */
+#define AC97_SC_SPSR_48K	0x2000	/* Use 48kHz Sample rate */
+#define AC97_SC_SPSR_32K	0x3000	/* Use 32kHz Sample rate */
+#define AC97_SC_DRS		0x4000	/* Double Rate S/PDIF */
+#define AC97_SC_V		0x8000	/* Validity status */
+
+/* Interrupt and Paging bit defines (AC'97 2.3) */
+#define AC97_PAGE_MASK		0x000f	/* Page Selector */
+#define AC97_PAGE_VENDOR	0	/* Vendor-specific registers */
+#define AC97_PAGE_1		1	/* Extended Codec Registers page 1 */
+#define AC97_INT_ENABLE		0x0800	/* Interrupt Enable */
+#define AC97_INT_SENSE		0x1000	/* Sense Cycle */
+#define AC97_INT_CAUSE_SENSE	0x2000	/* Sense Cycle Completed (RO) */
+#define AC97_INT_CAUSE_GPIO	0x4000	/* GPIO bits changed (RO) */
+#define AC97_INT_STATUS		0x8000	/* Interrupt Status */
+
+/* extended modem ID bit defines */
+#define AC97_MEI_LINE1		0x0001	/* Line1 present */
+#define AC97_MEI_LINE2		0x0002	/* Line2 present */
+#define AC97_MEI_HANDSET	0x0004	/* Handset present */
+#define AC97_MEI_CID1		0x0008	/* caller ID decode for Line1 is supported */
+#define AC97_MEI_CID2		0x0010	/* caller ID decode for Line2 is supported */
+#define AC97_MEI_ADDR_MASK	0xc000	/* physical codec ID (address) */
+#define AC97_MEI_ADDR_SHIFT	14
+
+/* extended modem status and control bit defines */
+#define AC97_MEA_GPIO		0x0001	/* GPIO is ready (ro) */
+#define AC97_MEA_MREF		0x0002	/* Vref is up to nominal level (ro) */
+#define AC97_MEA_ADC1		0x0004	/* ADC1 operational (ro) */
+#define AC97_MEA_DAC1		0x0008	/* DAC1 operational (ro) */
+#define AC97_MEA_ADC2		0x0010	/* ADC2 operational (ro) */
+#define AC97_MEA_DAC2		0x0020	/* DAC2 operational (ro) */
+#define AC97_MEA_HADC		0x0040	/* HADC operational (ro) */
+#define AC97_MEA_HDAC		0x0080	/* HDAC operational (ro) */
+#define AC97_MEA_PRA		0x0100	/* GPIO power down (high) */
+#define AC97_MEA_PRB		0x0200	/* reserved */
+#define AC97_MEA_PRC		0x0400	/* ADC1 power down (high) */
+#define AC97_MEA_PRD		0x0800	/* DAC1 power down (high) */
+#define AC97_MEA_PRE		0x1000	/* ADC2 power down (high) */
+#define AC97_MEA_PRF		0x2000	/* DAC2 power down (high) */
+#define AC97_MEA_PRG		0x4000	/* HADC power down (high) */
+#define AC97_MEA_PRH		0x8000	/* HDAC power down (high) */
+
+/* modem gpio status defines */
+#define AC97_GPIO_LINE1_OH      0x0001  /* Off Hook Line1 */
+#define AC97_GPIO_LINE1_RI      0x0002  /* Ring Detect Line1 */
+#define AC97_GPIO_LINE1_CID     0x0004  /* Caller ID path enable Line1 */
+#define AC97_GPIO_LINE1_LCS     0x0008  /* Loop Current Sense Line1 */
+#define AC97_GPIO_LINE1_PULSE   0x0010  /* Opt./ Pulse Dial Line1 (out) */
+#define AC97_GPIO_LINE1_HL1R    0x0020  /* Opt./ Handset to Line1 relay control (out) */
+#define AC97_GPIO_LINE1_HOHD    0x0040  /* Opt./ Handset off hook detect Line1 (in) */
+#define AC97_GPIO_LINE12_AC     0x0080  /* Opt./ Int.bit 1 / Line1/2 AC (out) */
+#define AC97_GPIO_LINE12_DC     0x0100  /* Opt./ Int.bit 2 / Line1/2 DC (out) */
+#define AC97_GPIO_LINE12_RS     0x0200  /* Opt./ Int.bit 3 / Line1/2 RS (out) */
+#define AC97_GPIO_LINE2_OH      0x0400  /* Off Hook Line2 */
+#define AC97_GPIO_LINE2_RI      0x0800  /* Ring Detect Line2 */
+#define AC97_GPIO_LINE2_CID     0x1000  /* Caller ID path enable Line2 */
+#define AC97_GPIO_LINE2_LCS     0x2000  /* Loop Current Sense Line2 */
+#define AC97_GPIO_LINE2_PULSE   0x4000  /* Opt./ Pulse Dial Line2 (out) */
+#define AC97_GPIO_LINE2_HL1R    0x8000  /* Opt./ Handset to Line2 relay control (out) */
+