[U-Boot] [PATCH v5 12/14] usb: extend generic OHCI with clock, reset and phy

[Patrice CHOTARD <patrice.chotard@st.com>]

Hi Simon

On 05/14/2017 11:13 AM, Simon Glass wrote:
> On 10 May 2017 at 10:09,  <patrice.chotard@st.com> wrote:
>> From: Patrice Chotard <patrice.chotard@st.com>
>>
>> Make this driver more generic as echi-generic
>>
>> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
>> ---
>>
>> v5:   _ add clock, reset and generic phy support
>>
>>  drivers/usb/host/ohci-generic.c | 48 +++++++++++++++++++++++++++++++++++------
>>  1 file changed, 42 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/usb/host/ohci-generic.c b/drivers/usb/host/ohci-generic.c
>> index f3307f4..33e8095 100644
>> --- a/drivers/usb/host/ohci-generic.c
>> +++ b/drivers/usb/host/ohci-generic.c
>> @@ -5,7 +5,12 @@
>>   */
>>
>>  #include <common.h>
>> +#include <clk.h>
>>  #include <dm.h>
>> +#include <fdtdec.h>
>> +#include <generic-phy.h>
>> +#include <reset.h>
>> +
>>  #include "ohci.h"
>>
>>  #if !defined(CONFIG_USB_OHCI_NEW)
>> @@ -19,13 +24,44 @@ struct generic_ohci {
>>  static int ohci_usb_probe(struct udevice *dev)
>>  {
>>         struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev);
>> +       int i;
>>
>> -       return ohci_register(dev, regs);
>> -}
>> +       for (i = 0; ; i++) {
>> +               struct clk clk;
>> +               int ret;
>>
>> -static int ohci_usb_remove(struct udevice *dev)
>> -{
>> -       return ohci_deregister(dev);
>> +               ret = clk_get_by_index(dev, i, &clk);
>> +               if (ret < 0)
>> +                       break;
>> +               if (clk_enable(&clk))
>> +                       printf("failed to enable clock %d\n", i);
>> +               clk_free(&clk);
>> +       }
>
> Don't you want to store these clocks in your private data so you can
> disable them at the end?

Marek made me similar remark, i already submitted a v2 implemented this.

Thanks

Patrice

>
>> +
>> +       for (i = 0; ; i++) {
>> +               struct reset_ctl reset;
>> +               int ret;
>> +
>> +               ret = reset_get_by_index(dev, i, &reset);
>> +               if (ret < 0)
>> +                       break;
>> +               if (reset_deassert(&reset))
>> +                       printf("failed to deassert reset %d\n", i);
>> +               reset_free(&reset);
>> +       }
>> +
>> +       for (i = 0; ; i++) {
>> +               struct phy usb_phy;
>> +               int ret;
>> +
>> +               ret = generic_phy_get_by_index(dev, i, &usb_phy);
>> +               if (ret < 0)
>> +                       break;
>> +               if (generic_phy_init(&usb_phy))
>> +                       printf("failed to init usb phy %d\n", i);
>> +       }
>> +
>> +       return ohci_register(dev, regs);
>>  }
>>
>>  static const struct udevice_id ohci_usb_ids[] = {
>> @@ -38,7 +74,7 @@ U_BOOT_DRIVER(ohci_generic) = {
>>         .id     = UCLASS_USB,
>>         .of_match = ohci_usb_ids,
>>         .probe = ohci_usb_probe,
>> -       .remove = ohci_usb_remove,
>> +       .remove = ohci_deregister,
>>         .ops    = &ohci_usb_ops,
>>         .priv_auto_alloc_size = sizeof(struct generic_ohci),
>>         .flags  = DM_FLAG_ALLOC_PRIV_DMA,
>> --
>> 1.9.1
>>
>
> Regards,
> Simon
>