kernel.git/drivers/usb/chipidea/core.c, branch linux-3.15.y

usb: chipidea: coordinate usb phy initialization for different phy type

2014-04-24T19:45:40Z

For internal PHY (like UTMI), the phy clock may from internal pll, it is on/off on the fly, the access PORTSC.PTS will hang without phy clock. So, the usb_phy_init which will open phy clock needs to be called before hw_phymode_configure. See: http://marc.info/?l=linux-arm-kernel&m=139350618732108&w=2 For external PHY (like ulpi), it needs to configure portsc.pts before visit viewport, or the viewport can't be visited. so phy_phymode_configure needs to be called before usb_phy_init. See: cd0b42c2a6d2a74244f0053f8960f5dad5842278 It may not the best solution, but it can work for all situations. Cc: Sascha Hauer Cc: Chris Ruehl Cc: shc_work@mail.ru Cc: denis@eukrea.com Cc: festevam@gmail.com Cc: stable # 3.14 Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: Propagate the real error code on platform_get_irq() failure

2014-02-25T01:07:53Z

No need to return a 'fake' return value on platform_get_irq() failure. Just return the error code itself instead. Signed-off-by: Peter Chen Signed-off-by: Fabio Estevam Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: add maximum-speed = full-speed option

2014-02-25T01:07:52Z

This patch makes it possible to set the chipidea udc into full-speed only mode. It is set by the oftree property "maximum-speed = full-speed". Signed-off-by: Peter Chen Signed-off-by: Michael Grzeschik Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman

usb: chipidea: use dev_get_platdata()

2014-02-25T01:07:52Z

Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Peter Chen Signed-off-by: Jingoo Han Signed-off-by: Greg Kroah-Hartman

usb: chipidea: refine PHY operation

2014-02-25T01:07:52Z

- Delete global_phy due to we can get the phy from phy layer now - using devm_usb_get_phy to instead of usb_get_phy - delete the otg_set_peripheral, which should be handled by otg layer Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: put hw_phymode_configure before ci_usb_phy_init

2014-01-13T23:55:19Z

hw_phymode_configure configures the PORTSC registers and allow the following phy_inits to operate on the right parameters. This fix a problem where the UPLI (ISP1504) could not be detected, because the Viewport was not available and read the viewport return 0's only. Signed-off-by: Chris Ruehl Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: Fix Internal error: : 808 [#1] ARM related to STS flag

2014-01-13T23:55:19Z

* init the sts flag to 0 (missed) * fix write the real bit not sts value * Set PORTCS_STS and DEVLC_STS only if sts = 1 [Peter Chen: This one and the next patch fix the problem occurred imx27 and imx31, and imx27 and imx31 usb support are enabled until 3.14, so these two patches isn't needed for -stable] Signed-off-by: Chris Ruehl Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add freescale imx28 special write register method

2014-01-13T23:55:19Z

According to Freescale imx28 Errata, "ENGR119653 USB: ARM to USB register error issue", All USB register write operations must use the ARM SWP instruction. So, we implement special hw_write and hw_test_and_clear for imx28. Discussion for it at below: http://marc.info/?l=linux-usb&m=137996395529294&w=2 This patch is needed for stable tree 3.11+. Cc: stable@vger.kernel.org Cc: robert.hodaszi@digi.com Signed-off-by: Peter Chen Signed-off-by: Marc Kleine-Budde Tested-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman

usb: chipidea: mark register map as "const" and convert to u8

2014-01-08T00:21:06Z

This patch makes the controller register map ci_regs_nolpm and ci_regs_lpm as "const". Further, as all offset fit into a single byte, the type is changed from uintptr_t to u8. Signed-off-by: Marc Kleine-Budde Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: move malloced regmap directly into struct hw_bank

2014-01-08T00:21:06Z

Without this patch a seperate chunk of memory is allocated for the regmap array. As the regmap is always used it makes no sense to allocate a seperate memory block for it, this patch moves the regmap array directly into the struct hw_bank. Signed-off-by: Marc Kleine-Budde Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman