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Commit Graph

18 Commits

Author SHA1 Message Date
Fabio Estevam
4a1d6cf156 usb: chipidea: usbmisc_imx: Read MX53_USB_OTG_PHY_CTRL_1_OFFSET directly
There is no need to do an intermediate step for reading the
MX53_USB_OTG_PHY_CTRL_1_OFFSET register.

Read it directly instead.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 09:28:12 -08:00
Fabio Estevam
8d1dc4d055 usb: chipidea: usbmisc_imx: Move the reading of USB_PHY_CTRL
If 'evdo' property is not defined, then reading the MX25_USB_PHY_CTRL_OFFSET
register is an unneeded operation.

Move the reading of MX25_USB_PHY_CTRL_OFFSET inside the 'evdo' if block code,
where it is actually used.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 09:28:11 -08:00
Stefan Agner
f40017e0f3 chipidea: usbmisc_imx: Add USB support for VF610 SoCs
This adds Vybrid VF610 SoC support. The IP is very similar to i.MX6,
however, the non-core registers are spread in two different register
areas. Hence we support multiple instances of the USB misc driver
and add the driver instance to the imx_usbmisc_data structure.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 21:32:30 -07:00
Fabio Estevam
33f92a8a92 chipidea: usbmisc_imx: Allow USB OTG to work on mx51
The field PLLDIVVALUE of register PHY_CTRL_1 selects the reference clock source
for the PHY:
00 = sysclock uses 19.2 MHz
01 = sysclock uses 24 MHz
10 = sysclock uses 26 MHz
11 = sysclock uses 27 MHz

The reset value for this field is 10 according to the reference manual, and
even though this reset value works for mx53, it does not work for mx51.

So instead of relying on the reset value for the PLLDIVVALUE field, explicitly
set it to 01 so that a 24MHz clock can be selected for the PHY and allowing both
mx51 and mx53 to have USB OTG port functional.

Succesfully tested 'g_ether' on a imx51-babbage and on a imx53-qsb boards.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-23 11:36:43 +09:00
Denis Carikli
72ee92d133 usb: chipidea: usbmisc: Add USB support for i.MX25/i.MX35 CPUs
This adds the i.MX25 and the i.MX35 support in the
ChipIdea usbmisc driver.

The i.MX25 and i.MX35 usb controllers are similar enough to be
able to use the same code.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Denis Carikli <denis@eukrea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-24 12:56:34 -07:00
Alexander Shiyan
c4962e03f4 usb: chipidea: usbmisc: Add support for i.MX51 CPU
This adds i.MX51 as the next user of the usbmisc driver.
Functionality is similar to i.MX53, so at this stage simply
reuse existing i.MX53 calls.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:02:55 -08:00
Alexander Shiyan
9f90e111a6 usb: chipidea: usbmisc: Add support for i.MX27/i.MX31 CPUs
This adds i.MX27 and i.MX31 as the next user of the usbmisc driver.

Tested-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:02:55 -08:00
Sascha Hauer
05986ba9b0 USB: chipidea: i.MX: simplify usbmisc
The chipidea i.MX driver is split into two drivers. The ci_hdrc_imx driver
handles the chipidea cores and the usbmisc_imx driver handles the noncore
registers common to all chipidea cores (but SoC specific). Current flow is:

- usbmisc sets an ops pointer in the ci_hdrc_imx driver during probe
- ci_hdrc_imx checks if the pointer is valid during probe, if yes calls
  the functions in the ops pointer.
- usbmisc_imx calls back into the ci_hdrc_imx driver to get additional
  data

This is overly complicated and has problems if the drivers are compiled
as modules. In this case the usbmisc_imx driver can be unloaded even if
the ci_hdrc_imx driver still needs usbmisc functionality.

This patch changes this by letting the ci_hdrc_imx driver calling functions
from the usbmisc_imx driver. This way the symbol resolving during module
load makes sure the ci_hdrc_imx driver depends on the usbmisc_imx driver.

Also instead of letting the usbmisc_imx driver call back into the ci_hdrc_imx
driver, pass the needed data in the first place.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-14 12:37:20 -07:00
Alexander Shishkin
8e22978c57 usb: chipidea: drop "13xxx" infix
"ci13xxx" is bad for at least the following reasons:
  * people often mistype it
  * it doesn't add any informational value to the names it's used in
  * it needlessly attracts mail filters

This patch replaces it with "ci_hdrc", "ci_udc" or "ci_hw", depending
on the situation. Modules with ci13xxx prefix are also renamed accordingly
and aliases are added for compatibility. Otherwise, no functional changes.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:16:55 -07:00
Arnaud Patard (Rtp)
269b83dc9c usbmisc_imx: allow autoloading on according to dt ids
Allow udev to autoload the module when booting with device-tree

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24 16:15:26 -07:00
Philipp Zabel
0404ae0351 usb: chipidea: usbmisc: use module_platform_driver
This patch converts the driver to use the module_platform_driver
macro which makes the code smaller and a bit simpler.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17 13:47:24 -07:00
Fabio Estevam
f6a57507f6 usb: chipidea: usbmisc_imx: Staticize usbmisc_imx_drv_init/exit
Fix the following sparse warnings:

drivers/usb/chipidea/usbmisc_imx.c:246:5: warning: symbol 'usbmisc_imx_drv_init' was not declared. Should it be static?
drivers/usb/chipidea/usbmisc_imx.c:252:6: warning: symbol 'usbmisc_imx_drv_exit' was not declared. Should it be static?

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17 13:45:46 -07:00
Michael Grzeschik
a068533079 usb: chipidea: usbmisc: add post handling and errata fix for mx25
This adds a post handling routine which is called after
ci13xxx_add_device was called. The first user is the mx25, which has to
disable the external-vbus-divider after the udc has started.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
[Alex: also fixed a signed one-bit bitfield a whitespace error and yet
 another set of line-too-long and void pointer casting errors]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:58 -07:00
Michael Grzeschik
f0c910b63c usb: chipidea: usbmisc: add mx53 support
This adds mx53 as the next user of the usbmisc driver and makes it
possible to disable the overcurrent-detection of the internal phy.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
[Alex: fixed another set of line-too-long and void pointer cast]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:58 -07:00
Marc Kleine-Budde
e609108a5b usb: chipidea: usbmisc: prepare driver to handle more than one soc
This attaches the usbmisc_ops to the of_device_id data and
makes it possible to define special functions per soc.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
[Alex: fixed one case of line-too-long and one bogus cast to void ptr]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:57 -07:00
Marc Kleine-Budde
00b9a1f97d usb: chipidea: usbmisc: fix a potential race condition
This fixes a potential race condition where the ci13xxx_imx glue code
could be fast enough to call one of the usbmisc_ops before he got a
valid value on the static usbmisc pointer. To fix that we first set
usbmisc, then call usbmisc_set_ops().

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:57 -07:00
Marc Kleine-Budde
d48a24dbc0 usb: chipidea: usbmisc: unset global varibale usbmisc on driver remove
The probe function checks usbmisc to be NULL in the beginning. Without
this patch the can only be loaded once.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:57 -07:00
Michael Grzeschik
a7bc2fdf00 usb: chipidea: usbmisc: rename file, struct and functions to usbmisc_imx
This driver will be used for every Freescale SoC which has this misc
memory layout to control the basic usb handling. So better name this
driver, function and struct names in a more generic way.

Reported-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-30 08:13:57 -07:00