diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 15:19:23 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 15:19:23 -0400 |
commit | ec25e246b94a3233ab064994ef05a170bdba0e7c (patch) | |
tree | 49b7d7e4c46e13bb465c7b832961596e41e8526a /Documentation | |
parent | 507ffe4f3840ac24890a8123c702cf1b7fe4d33c (diff) | |
parent | 4626b8daf9bb00ce6b4d533c1a155211ad880f32 (diff) |
Merge tag 'usb-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB pull request for 3.10-rc1.
Lots of USB patches here, the majority being USB gadget changes and
USB-serial driver cleanups, the rest being ARM build fixes / cleanups,
and individual driver updates. We also finally got some chipidea
fixes, which have been delayed for a number of kernel releases, as the
maintainer has now reappeared.
All of these have been in linux-next for a while"
* tag 'usb-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (568 commits)
USB: ehci-msm: USB_MSM_OTG needs USB_PHY
USB: OHCI: avoid conflicting platform drivers
USB: OMAP: ISP1301 needs USB_PHY
USB: lpc32xx: ISP1301 needs USB_PHY
USB: ftdi_sio: enable two UART ports on ST Microconnect Lite
usb: phy: tegra: don't call into tegra-ehci directly
usb: phy: phy core cannot yet be a module
USB: Fix initconst in ehci driver
usb-storage: CY7C68300A chips do not support Cypress ATACB
USB: serial: option: Added support Olivetti Olicard 145
USB: ftdi_sio: correct ST Micro Connect Lite PIDs
ARM: mxs_defconfig: add CONFIG_USB_PHY
ARM: imx_v6_v7_defconfig: add CONFIG_USB_PHY
usb: phy: remove exported function from __init section
usb: gadget: zero: put function instances on unbind
usb: gadget: f_sourcesink.c: correct a copy-paste misnomer
usb: gadget: cdc2: fix error return code in cdc_do_config()
usb: gadget: multi: fix error return code in rndis_do_config()
usb: gadget: f_obex: fix error return code in obex_bind()
USB: storage: convert to use module_usb_driver()
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 6 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/ci13xxx-imx.txt | 2 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/ehci-omap.txt | 32 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/ohci-omap3.txt | 15 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/omap-usb.txt | 40 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/samsung-usbphy.txt | 76 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt | 34 | ||||
-rw-r--r-- | Documentation/ioctl/ioctl-number.txt | 1 | ||||
-rw-r--r-- | Documentation/usb/power-management.txt | 10 |
9 files changed, 196 insertions, 20 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index c8baaf53594a..f093e59cbe5f 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb | |||
@@ -32,7 +32,7 @@ Date: January 2008 | |||
32 | KernelVersion: 2.6.25 | 32 | KernelVersion: 2.6.25 |
33 | Contact: Sarah Sharp <sarah.a.sharp@intel.com> | 33 | Contact: Sarah Sharp <sarah.a.sharp@intel.com> |
34 | Description: | 34 | Description: |
35 | If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file | 35 | If CONFIG_PM_RUNTIME is enabled then this file |
36 | is present. When read, it returns the total time (in msec) | 36 | is present. When read, it returns the total time (in msec) |
37 | that the USB device has been connected to the machine. This | 37 | that the USB device has been connected to the machine. This |
38 | file is read-only. | 38 | file is read-only. |
@@ -45,7 +45,7 @@ Date: January 2008 | |||
45 | KernelVersion: 2.6.25 | 45 | KernelVersion: 2.6.25 |
46 | Contact: Sarah Sharp <sarah.a.sharp@intel.com> | 46 | Contact: Sarah Sharp <sarah.a.sharp@intel.com> |
47 | Description: | 47 | Description: |
48 | If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file | 48 | If CONFIG_PM_RUNTIME is enabled then this file |
49 | is present. When read, it returns the total time (in msec) | 49 | is present. When read, it returns the total time (in msec) |
50 | that the USB device has been active, i.e. not in a suspended | 50 | that the USB device has been active, i.e. not in a suspended |
51 | state. This file is read-only. | 51 | state. This file is read-only. |
@@ -187,7 +187,7 @@ What: /sys/bus/usb/devices/.../power/usb2_hardware_lpm | |||
187 | Date: September 2011 | 187 | Date: September 2011 |
188 | Contact: Andiry Xu <andiry.xu@amd.com> | 188 | Contact: Andiry Xu <andiry.xu@amd.com> |
189 | Description: | 189 | Description: |
190 | If CONFIG_USB_SUSPEND is set and a USB 2.0 lpm-capable device | 190 | If CONFIG_PM_RUNTIME is set and a USB 2.0 lpm-capable device |
191 | is plugged in to a xHCI host which support link PM, it will | 191 | is plugged in to a xHCI host which support link PM, it will |
192 | perform a LPM test; if the test is passed and host supports | 192 | perform a LPM test; if the test is passed and host supports |
193 | USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will | 193 | USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will |
diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt index 5778b9c83bd8..1c04a4c9515f 100644 --- a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt +++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt | |||
@@ -11,6 +11,7 @@ Optional properties: | |||
11 | that indicate usb controller index | 11 | that indicate usb controller index |
12 | - vbus-supply: regulator for vbus | 12 | - vbus-supply: regulator for vbus |
13 | - disable-over-current: disable over current detect | 13 | - disable-over-current: disable over current detect |
14 | - external-vbus-divider: enables off-chip resistor divider for Vbus | ||
14 | 15 | ||
15 | Examples: | 16 | Examples: |
16 | usb@02184000 { /* USB OTG */ | 17 | usb@02184000 { /* USB OTG */ |
@@ -20,4 +21,5 @@ usb@02184000 { /* USB OTG */ | |||
20 | fsl,usbphy = <&usbphy1>; | 21 | fsl,usbphy = <&usbphy1>; |
21 | fsl,usbmisc = <&usbmisc 0>; | 22 | fsl,usbmisc = <&usbmisc 0>; |
22 | disable-over-current; | 23 | disable-over-current; |
24 | external-vbus-divider; | ||
23 | }; | 25 | }; |
diff --git a/Documentation/devicetree/bindings/usb/ehci-omap.txt b/Documentation/devicetree/bindings/usb/ehci-omap.txt new file mode 100644 index 000000000000..485a9a1efa7a --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ehci-omap.txt | |||
@@ -0,0 +1,32 @@ | |||
1 | OMAP HS USB EHCI controller | ||
2 | |||
3 | This device is usually the child of the omap-usb-host | ||
4 | Documentation/devicetree/bindings/mfd/omap-usb-host.txt | ||
5 | |||
6 | Required properties: | ||
7 | |||
8 | - compatible: should be "ti,ehci-omap" | ||
9 | - reg: should contain one register range i.e. start and length | ||
10 | - interrupts: description of the interrupt line | ||
11 | |||
12 | Optional properties: | ||
13 | |||
14 | - phys: list of phandles to PHY nodes. | ||
15 | This property is required if at least one of the ports are in | ||
16 | PHY mode i.e. OMAP_EHCI_PORT_MODE_PHY | ||
17 | |||
18 | To specify the port mode, see | ||
19 | Documentation/devicetree/bindings/mfd/omap-usb-host.txt | ||
20 | |||
21 | Example for OMAP4: | ||
22 | |||
23 | usbhsehci: ehci@4a064c00 { | ||
24 | compatible = "ti,ehci-omap", "usb-ehci"; | ||
25 | reg = <0x4a064c00 0x400>; | ||
26 | interrupts = <0 77 0x4>; | ||
27 | }; | ||
28 | |||
29 | &usbhsehci { | ||
30 | phys = <&hsusb1_phy 0 &hsusb3_phy>; | ||
31 | }; | ||
32 | |||
diff --git a/Documentation/devicetree/bindings/usb/ohci-omap3.txt b/Documentation/devicetree/bindings/usb/ohci-omap3.txt new file mode 100644 index 000000000000..14ab42812a8e --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ohci-omap3.txt | |||
@@ -0,0 +1,15 @@ | |||
1 | OMAP HS USB OHCI controller (OMAP3 and later) | ||
2 | |||
3 | Required properties: | ||
4 | |||
5 | - compatible: should be "ti,ohci-omap3" | ||
6 | - reg: should contain one register range i.e. start and length | ||
7 | - interrupts: description of the interrupt line | ||
8 | |||
9 | Example for OMAP4: | ||
10 | |||
11 | usbhsohci: ohci@4a064800 { | ||
12 | compatible = "ti,ohci-omap3", "usb-ohci"; | ||
13 | reg = <0x4a064800 0x400>; | ||
14 | interrupts = <0 76 0x4>; | ||
15 | }; | ||
diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt index 1ef0ce71f8fa..662f0f1d2315 100644 --- a/Documentation/devicetree/bindings/usb/omap-usb.txt +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt | |||
@@ -8,10 +8,10 @@ OMAP MUSB GLUE | |||
8 | and disconnect. | 8 | and disconnect. |
9 | - multipoint : Should be "1" indicating the musb controller supports | 9 | - multipoint : Should be "1" indicating the musb controller supports |
10 | multipoint. This is a MUSB configuration-specific setting. | 10 | multipoint. This is a MUSB configuration-specific setting. |
11 | - num_eps : Specifies the number of endpoints. This is also a | 11 | - num-eps : Specifies the number of endpoints. This is also a |
12 | MUSB configuration-specific setting. Should be set to "16" | 12 | MUSB configuration-specific setting. Should be set to "16" |
13 | - ram_bits : Specifies the ram address size. Should be set to "12" | 13 | - ram-bits : Specifies the ram address size. Should be set to "12" |
14 | - interface_type : This is a board specific setting to describe the type of | 14 | - interface-type : This is a board specific setting to describe the type of |
15 | interface between the controller and the phy. It should be "0" or "1" | 15 | interface between the controller and the phy. It should be "0" or "1" |
16 | specifying ULPI and UTMI respectively. | 16 | specifying ULPI and UTMI respectively. |
17 | - mode : Should be "3" to represent OTG. "1" signifies HOST and "2" | 17 | - mode : Should be "3" to represent OTG. "1" signifies HOST and "2" |
@@ -29,18 +29,46 @@ usb_otg_hs: usb_otg_hs@4a0ab000 { | |||
29 | ti,hwmods = "usb_otg_hs"; | 29 | ti,hwmods = "usb_otg_hs"; |
30 | ti,has-mailbox; | 30 | ti,has-mailbox; |
31 | multipoint = <1>; | 31 | multipoint = <1>; |
32 | num_eps = <16>; | 32 | num-eps = <16>; |
33 | ram_bits = <12>; | 33 | ram-bits = <12>; |
34 | ctrl-module = <&omap_control_usb>; | 34 | ctrl-module = <&omap_control_usb>; |
35 | }; | 35 | }; |
36 | 36 | ||
37 | Board specific device node entry | 37 | Board specific device node entry |
38 | &usb_otg_hs { | 38 | &usb_otg_hs { |
39 | interface_type = <1>; | 39 | interface-type = <1>; |
40 | mode = <3>; | 40 | mode = <3>; |
41 | power = <50>; | 41 | power = <50>; |
42 | }; | 42 | }; |
43 | 43 | ||
44 | OMAP DWC3 GLUE | ||
45 | - compatible : Should be "ti,dwc3" | ||
46 | - ti,hwmods : Should be "usb_otg_ss" | ||
47 | - reg : Address and length of the register set for the device. | ||
48 | - interrupts : The irq number of this device that is used to interrupt the | ||
49 | MPU | ||
50 | - #address-cells, #size-cells : Must be present if the device has sub-nodes | ||
51 | - utmi-mode : controls the source of UTMI/PIPE status for VBUS and OTG ID. | ||
52 | It should be set to "1" for HW mode and "2" for SW mode. | ||
53 | - ranges: the child address space are mapped 1:1 onto the parent address space | ||
54 | |||
55 | Sub-nodes: | ||
56 | The dwc3 core should be added as subnode to omap dwc3 glue. | ||
57 | - dwc3 : | ||
58 | The binding details of dwc3 can be found in: | ||
59 | Documentation/devicetree/bindings/usb/dwc3.txt | ||
60 | |||
61 | omap_dwc3 { | ||
62 | compatible = "ti,dwc3"; | ||
63 | ti,hwmods = "usb_otg_ss"; | ||
64 | reg = <0x4a020000 0x1ff>; | ||
65 | interrupts = <0 93 4>; | ||
66 | #address-cells = <1>; | ||
67 | #size-cells = <1>; | ||
68 | utmi-mode = <2>; | ||
69 | ranges; | ||
70 | }; | ||
71 | |||
44 | OMAP CONTROL USB | 72 | OMAP CONTROL USB |
45 | 73 | ||
46 | Required properties: | 74 | Required properties: |
diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt index 033194934f64..f575302e5173 100644 --- a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt | |||
@@ -1,20 +1,25 @@ | |||
1 | * Samsung's usb phy transceiver | 1 | SAMSUNG USB-PHY controllers |
2 | 2 | ||
3 | The Samsung's phy transceiver is used for controlling usb phy for | 3 | ** Samsung's usb 2.0 phy transceiver |
4 | s3c-hsotg as well as ehci-s5p and ohci-exynos usb controllers | 4 | |
5 | across Samsung SOCs. | 5 | The Samsung's usb 2.0 phy transceiver is used for controlling |
6 | usb 2.0 phy for s3c-hsotg as well as ehci-s5p and ohci-exynos | ||
7 | usb controllers across Samsung SOCs. | ||
6 | TODO: Adding the PHY binding with controller(s) according to the under | 8 | TODO: Adding the PHY binding with controller(s) according to the under |
7 | developement generic PHY driver. | 9 | developement generic PHY driver. |
8 | 10 | ||
9 | Required properties: | 11 | Required properties: |
10 | 12 | ||
11 | Exynos4210: | 13 | Exynos4210: |
12 | - compatible : should be "samsung,exynos4210-usbphy" | 14 | - compatible : should be "samsung,exynos4210-usb2phy" |
13 | - reg : base physical address of the phy registers and length of memory mapped | 15 | - reg : base physical address of the phy registers and length of memory mapped |
14 | region. | 16 | region. |
17 | - clocks: Clock IDs array as required by the controller. | ||
18 | - clock-names: names of clock correseponding IDs clock property as requested | ||
19 | by the controller driver. | ||
15 | 20 | ||
16 | Exynos5250: | 21 | Exynos5250: |
17 | - compatible : should be "samsung,exynos5250-usbphy" | 22 | - compatible : should be "samsung,exynos5250-usb2phy" |
18 | - reg : base physical address of the phy registers and length of memory mapped | 23 | - reg : base physical address of the phy registers and length of memory mapped |
19 | region. | 24 | region. |
20 | 25 | ||
@@ -44,12 +49,69 @@ Example: | |||
44 | usbphy@125B0000 { | 49 | usbphy@125B0000 { |
45 | #address-cells = <1>; | 50 | #address-cells = <1>; |
46 | #size-cells = <1>; | 51 | #size-cells = <1>; |
47 | compatible = "samsung,exynos4210-usbphy"; | 52 | compatible = "samsung,exynos4210-usb2phy"; |
48 | reg = <0x125B0000 0x100>; | 53 | reg = <0x125B0000 0x100>; |
49 | ranges; | 54 | ranges; |
50 | 55 | ||
56 | clocks = <&clock 2>, <&clock 305>; | ||
57 | clock-names = "xusbxti", "otg"; | ||
58 | |||
51 | usbphy-sys { | 59 | usbphy-sys { |
52 | /* USB device and host PHY_CONTROL registers */ | 60 | /* USB device and host PHY_CONTROL registers */ |
53 | reg = <0x10020704 0x8>; | 61 | reg = <0x10020704 0x8>; |
54 | }; | 62 | }; |
55 | }; | 63 | }; |
64 | |||
65 | |||
66 | ** Samsung's usb 3.0 phy transceiver | ||
67 | |||
68 | Starting exynso5250, Samsung's SoC have usb 3.0 phy transceiver | ||
69 | which is used for controlling usb 3.0 phy for dwc3-exynos usb 3.0 | ||
70 | controllers across Samsung SOCs. | ||
71 | |||
72 | Required properties: | ||
73 | |||
74 | Exynos5250: | ||
75 | - compatible : should be "samsung,exynos5250-usb3phy" | ||
76 | - reg : base physical address of the phy registers and length of memory mapped | ||
77 | region. | ||
78 | - clocks: Clock IDs array as required by the controller. | ||
79 | - clock-names: names of clocks correseponding to IDs in the clock property | ||
80 | as requested by the controller driver. | ||
81 | |||
82 | Optional properties: | ||
83 | - #address-cells: should be '1' when usbphy node has a child node with 'reg' | ||
84 | property. | ||
85 | - #size-cells: should be '1' when usbphy node has a child node with 'reg' | ||
86 | property. | ||
87 | - ranges: allows valid translation between child's address space and parent's | ||
88 | address space. | ||
89 | |||
90 | - The child node 'usbphy-sys' to the node 'usbphy' is for the system controller | ||
91 | interface for usb-phy. It should provide the following information required by | ||
92 | usb-phy controller to control phy. | ||
93 | - reg : base physical address of PHY_CONTROL registers. | ||
94 | The size of this register is the total sum of size of all PHY_CONTROL | ||
95 | registers that the SoC has. For example, the size will be | ||
96 | '0x4' in case we have only one PHY_CONTROL register (e.g. | ||
97 | OTHERS register in S3C64XX or USB_PHY_CONTROL register in S5PV210) | ||
98 | and, '0x8' in case we have two PHY_CONTROL registers (e.g. | ||
99 | USBDEVICE_PHY_CONTROL and USBHOST_PHY_CONTROL registers in exynos4x). | ||
100 | and so on. | ||
101 | |||
102 | Example: | ||
103 | usbphy@12100000 { | ||
104 | compatible = "samsung,exynos5250-usb3phy"; | ||
105 | reg = <0x12100000 0x100>; | ||
106 | #address-cells = <1>; | ||
107 | #size-cells = <1>; | ||
108 | ranges; | ||
109 | |||
110 | clocks = <&clock 1>, <&clock 286>; | ||
111 | clock-names = "ext_xtal", "usbdrd30"; | ||
112 | |||
113 | usbphy-sys { | ||
114 | /* USB device and host PHY_CONTROL registers */ | ||
115 | reg = <0x10040704 0x8>; | ||
116 | }; | ||
117 | }; | ||
diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt new file mode 100644 index 000000000000..d7e272671c7e --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt | |||
@@ -0,0 +1,34 @@ | |||
1 | USB NOP PHY | ||
2 | |||
3 | Required properties: | ||
4 | - compatible: should be usb-nop-xceiv | ||
5 | |||
6 | Optional properties: | ||
7 | - clocks: phandle to the PHY clock. Use as per Documentation/devicetree | ||
8 | /bindings/clock/clock-bindings.txt | ||
9 | This property is required if clock-frequency is specified. | ||
10 | |||
11 | - clock-names: Should be "main_clk" | ||
12 | |||
13 | - clock-frequency: the clock frequency (in Hz) that the PHY clock must | ||
14 | be configured to. | ||
15 | |||
16 | - vcc-supply: phandle to the regulator that provides RESET to the PHY. | ||
17 | |||
18 | - reset-supply: phandle to the regulator that provides power to the PHY. | ||
19 | |||
20 | Example: | ||
21 | |||
22 | hsusb1_phy { | ||
23 | compatible = "usb-nop-xceiv"; | ||
24 | clock-frequency = <19200000>; | ||
25 | clocks = <&osc 0>; | ||
26 | clock-names = "main_clk"; | ||
27 | vcc-supply = <&hsusb1_vcc_regulator>; | ||
28 | reset-supply = <&hsusb1_reset_regulator>; | ||
29 | }; | ||
30 | |||
31 | hsusb1_phy is a NOP USB PHY device that gets its clock from an oscillator | ||
32 | and expects that clock to be configured to 19.2MHz by the NOP PHY driver. | ||
33 | hsusb1_vcc_regulator provides power to the PHY and hsusb1_reset_regulator | ||
34 | controls RESET. | ||
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index 3210540f8bd3..237acab169dd 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt | |||
@@ -131,6 +131,7 @@ Code Seq#(hex) Include File Comments | |||
131 | 'H' 40-4F sound/hdspm.h conflict! | 131 | 'H' 40-4F sound/hdspm.h conflict! |
132 | 'H' 40-4F sound/hdsp.h conflict! | 132 | 'H' 40-4F sound/hdsp.h conflict! |
133 | 'H' 90 sound/usb/usx2y/usb_stream.h | 133 | 'H' 90 sound/usb/usx2y/usb_stream.h |
134 | 'H' A0 uapi/linux/usb/cdc-wdm.h | ||
134 | 'H' C0-F0 net/bluetooth/hci.h conflict! | 135 | 'H' C0-F0 net/bluetooth/hci.h conflict! |
135 | 'H' C0-DF net/bluetooth/hidp/hidp.h conflict! | 136 | 'H' C0-DF net/bluetooth/hidp/hidp.h conflict! |
136 | 'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict! | 137 | 'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict! |
diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index 4204eb01fd38..1392b61d6ebe 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt | |||
@@ -33,6 +33,10 @@ built with CONFIG_USB_SUSPEND enabled (which depends on | |||
33 | CONFIG_PM_RUNTIME). System PM support is present only if the kernel | 33 | CONFIG_PM_RUNTIME). System PM support is present only if the kernel |
34 | was built with CONFIG_SUSPEND or CONFIG_HIBERNATION enabled. | 34 | was built with CONFIG_SUSPEND or CONFIG_HIBERNATION enabled. |
35 | 35 | ||
36 | (Starting with the 3.10 kernel release, dynamic PM support for USB is | ||
37 | present whenever the kernel was built with CONFIG_PM_RUNTIME enabled. | ||
38 | The CONFIG_USB_SUSPEND option has been eliminated.) | ||
39 | |||
36 | 40 | ||
37 | What is Remote Wakeup? | 41 | What is Remote Wakeup? |
38 | ---------------------- | 42 | ---------------------- |
@@ -206,10 +210,8 @@ initialized to 5. (The idle-delay values for already existing devices | |||
206 | will not be affected.) | 210 | will not be affected.) |
207 | 211 | ||
208 | Setting the initial default idle-delay to -1 will prevent any | 212 | Setting the initial default idle-delay to -1 will prevent any |
209 | autosuspend of any USB device. This is a simple alternative to | 213 | autosuspend of any USB device. This has the benefit of allowing you |
210 | disabling CONFIG_USB_SUSPEND and rebuilding the kernel, and it has the | 214 | then to enable autosuspend for selected devices. |
211 | added benefit of allowing you to enable autosuspend for selected | ||
212 | devices. | ||
213 | 215 | ||
214 | 216 | ||
215 | Warnings | 217 | Warnings |