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Subject: Re: [PATCH 1/2] dmaengine: ti: k3-psil: Use soc_device_match to get
 the psil map
To:     Vinod Koul <vkoul@kernel.org>
CC:     <dmaengine@vger.kernel.org>, <dan.j.williams@intel.com>,
        <linux-arm-kernel@lists.infradead.org>, <nm@ti.com>,
        <grygorii.strashko@ti.com>, <lokeshvutla@ti.com>, <nsekhar@ti.com>,
        <kishon@ti.com>, <linux-kernel@vger.kernel.org>
References: <20200803101128.20885-1-peter.ujfalusi@ti.com>
 <20200803101128.20885-2-peter.ujfalusi@ti.com>
 <20200803111436.GN12965@vkoul-mobl>
From:   Peter Ujfalusi <peter.ujfalusi@ti.com>
Message-ID: <5ac0498e-8874-4864-c823-d9648c381411@ti.com>
Date:   Mon, 3 Aug 2020 15:56:44 +0300
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On 03/08/2020 14.14, Vinod Koul wrote:
> On 03-08-20, 13:11, Peter Ujfalusi wrote:
>> Instead of separate of_machine_is_compatible() it is better to use
>> soc_device_match() and soc_device_attribute struct to get the PSI-L ma=
p
>> for the booted device.
>>
>> By using soc_device_match() it is easier to add support for new device=
s.
>>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>> ---
>>  drivers/dma/ti/k3-psil.c | 19 ++++++++++++++-----
>>  1 file changed, 14 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/dma/ti/k3-psil.c b/drivers/dma/ti/k3-psil.c
>> index fb7c8150b0d1..3ca29aabac93 100644
>> --- a/drivers/dma/ti/k3-psil.c
>> +++ b/drivers/dma/ti/k3-psil.c
>> @@ -9,11 +9,18 @@
>>  #include <linux/init.h>
>>  #include <linux/mutex.h>
>>  #include <linux/of.h>
>> +#include <linux/sys_soc.h>
>> =20
>>  #include "k3-psil-priv.h"
>> =20
>>  static DEFINE_MUTEX(ep_map_mutex);
>> -static struct psil_ep_map *soc_ep_map;
>> +static const struct psil_ep_map *soc_ep_map;
>> +
>> +static const struct soc_device_attribute k3_soc_devices[] =3D {
>> +	{ .family =3D "AM65X", .data =3D &am654_ep_map },
>> +	{ .family =3D "J721E", .data =3D &j721e_ep_map },
>> +	{ /* sentinel */ }
>> +};
>> =20
>>  struct psil_endpoint_config *psil_get_ep_config(u32 thread_id)
>>  {
>> @@ -21,15 +28,17 @@ struct psil_endpoint_config *psil_get_ep_config(u3=
2 thread_id)
>> =20
>>  	mutex_lock(&ep_map_mutex);
>>  	if (!soc_ep_map) {
>> -		if (of_machine_is_compatible("ti,am654")) {
>> -			soc_ep_map =3D &am654_ep_map;
>> -		} else if (of_machine_is_compatible("ti,j721e")) {
>> -			soc_ep_map =3D &j721e_ep_map;
>> +		const struct soc_device_attribute *soc;
>> +
>> +		soc =3D soc_device_match(k3_soc_devices);
>> +		if (soc) {
>> +			soc_ep_map =3D soc->data;
>>  		} else {
>>  			pr_err("PSIL: No compatible machine found for map\n");
>>  			mutex_unlock(&ep_map_mutex);
>>  			return ERR_PTR(-ENOTSUPP);
>>  		}
>> +
>=20
> not related

True, I'll drop it.

>=20
>>  		pr_debug("%s: Using map for %s\n", __func__, soc_ep_map->name);
>>  	}
>>  	mutex_unlock(&ep_map_mutex);

Thanks,
- P=C3=A9ter

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