On 11/04/2017 11:27 AM, Stefan Wahren wrote:
> Hi Florian
>
>> Florian Fainelli <f.fainelli@xxxxxxxxx> hat am 2. November 2017 um 02:04 geschrieben:
>>
>>
>> We have now incorporated all necessary functionality for the BCM63xx
>> platforms to successfully migrate over bcm2835-rng, so add the final
>> bits: Kconfig selection and proper platform_device device type matching
>> to keep the same platform device name for registration to work.
>>
>> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
>> ---
>> drivers/char/hw_random/Kconfig | 7 ++++---
>> drivers/char/hw_random/bcm2835-rng.c | 11 ++++++++++-
>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
>> index 95a031e9eced..d0689cc8c7fc 100644
>> --- a/drivers/char/hw_random/Kconfig
>> +++ b/drivers/char/hw_random/Kconfig
>> @@ -87,12 +87,13 @@ config HW_RANDOM_BCM63XX
>> If unusure, say Y.
>>
>> config HW_RANDOM_BCM2835
>> - tristate "Broadcom BCM2835 Random Number Generator support"
>> - depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X
>> + tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
>> + depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \
>> + ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC
>> default HW_RANDOM
>> ---help---
>> This driver provides kernel-side support for the Random Number
>> - Generator hardware found on the Broadcom BCM2835 SoCs.
>> + Generator hardware found on the Broadcom BCM2835 and BCM63xx SoCs.
>>
>> To compile this driver as a module, choose M here: the
>> module will be called bcm2835-rng
>> diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c
>> index 650e0033c273..d9ffe14f312b 100644
>> --- a/drivers/char/hw_random/bcm2835-rng.c
>> +++ b/drivers/char/hw_random/bcm2835-rng.c
>> @@ -131,6 +131,7 @@ static const struct of_device_id bcm2835_rng_of_match[] = {
>> { .compatible = "brcm,bcm2835-rng"},
>> { .compatible = "brcm,bcm-nsp-rng", .data = &nsp_rng_of_data },
>> { .compatible = "brcm,bcm5301x-rng", .data = &nsp_rng_of_data },
>> + { .compatible = "brcm,bcm6368-rng"},
>> {},
>> };
>>
>> @@ -164,7 +165,7 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
>> if (IS_ERR(priv->clk))
>> priv->clk = NULL;
>>
>> - priv->rng.name = "bcm2835-rng";
>> + priv->rng.name = pdev->id_entry->name;
>
> this change breaks registration on bcm2835, because the name is NULL.
OH right, I will fix that in v2, I am assuming that if you did something
like this, things still work correctly for you on 2835:
if (!priv->id_entry->name)
priv->rng.name = "bcm2835-rng";
else
priv->rng.name = priv->id_entry->name;
?
>
> Regards
> Stefan
>
>> priv->rng.init = bcm2835_rng_init;
>> priv->rng.read = bcm2835_rng_read;
>> priv->rng.cleanup = bcm2835_rng_cleanup;
>> @@ -190,12 +191,20 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
>>
>> MODULE_DEVICE_TABLE(of, bcm2835_rng_of_match);
>>
>> +static struct platform_device_id bcm2835_rng_devtype[] = {
>> + { .name = "bcm2835-rng" },
>> + { .name = "bcm63xx-rng" },
>> + { /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(platform, bcm2835_rng_devtype);
>> +
>> static struct platform_driver bcm2835_rng_driver = {
>> .driver = {
>> .name = "bcm2835-rng",
>> .of_match_table = bcm2835_rng_of_match,
>> },
>> .probe = bcm2835_rng_probe,
>> + .id_table = bcm2835_rng_devtype,
>> };
>> module_platform_driver(bcm2835_rng_driver);
>>
>> --
>> 2.9.3
>>
>>
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--
Florian
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