From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Damien Le Moal <damien.lemoal@opensource.wdc.com>,
Hans de Goede <hdegoede@redhat.com>, Jens Axboe <axboe@kernel.dk>,
Serge Semin <fancer.lancer@gmail.com>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
Rob Herring <robh+dt@kernel.org>, <linux-ide@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>
Subject: [PATCH v3 21/23] ata: ahci-dwc: Add platform-specific quirks support
Date: Thu, 12 May 2022 02:18:08 +0300 [thread overview]
Message-ID: <20220511231810.4928-22-Sergey.Semin@baikalelectronics.ru> (raw)
In-Reply-To: <20220511231810.4928-1-Sergey.Semin@baikalelectronics.ru>
Some DWC AHCI SATA IP-core derivatives require to perform small platform
or IP-core specific setups. They are too small to be placed in a dedicated
driver. It's just much easier to have a set of quirks for them right in
the DWC AHCI driver code. Since we are about to add such platform support,
as a pre-requisite we introduce a platform-data based DWC AHCI quirks API.
The platform data can be used to define the flags passed to the
ahci_platform_get_resources() method, additional AHCI host-flags and a set
of callbacks to initialize, re-initialize and clear the platform settings.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
Changelog v2:
- Change the local objects prefix from 'dwc_ahci_' to 'ahci_dwc_'.
(@Damien)
---
drivers/ata/ahci_dwc.c | 52 ++++++++++++++++++++++++++++++++++++++----
1 file changed, 48 insertions(+), 4 deletions(-)
diff --git a/drivers/ata/ahci_dwc.c b/drivers/ata/ahci_dwc.c
index 73380aaaebab..f987efa1ad59 100644
--- a/drivers/ata/ahci_dwc.c
+++ b/drivers/ata/ahci_dwc.c
@@ -90,7 +90,16 @@
#define AHCI_DWC_PORT_PHYCR 0x74
#define AHCI_DWC_PORT_PHYSR 0x78
+struct ahci_dwc_plat_data {
+ unsigned int pflags;
+ unsigned int hflags;
+ int (*init)(struct ahci_host_priv *hpriv);
+ int (*reinit)(struct ahci_host_priv *hpriv);
+ void (*clear)(struct ahci_host_priv *hpriv);
+};
+
struct ahci_dwc_host_priv {
+ const struct ahci_dwc_plat_data *pdata;
struct platform_device *pdev;
u32 timv;
@@ -107,11 +116,15 @@ static struct ahci_host_priv *ahci_dwc_get_resources(struct platform_device *pde
return ERR_PTR(-ENOMEM);
dpriv->pdev = pdev;
+ dpriv->pdata = device_get_match_data(&pdev->dev);
+ if (!dpriv->pdata)
+ return ERR_PTR(-EINVAL);
- hpriv = ahci_platform_get_resources(pdev, AHCI_PLATFORM_GET_RESETS);
+ hpriv = ahci_platform_get_resources(pdev, dpriv->pdata->pflags);
if (IS_ERR(hpriv))
return hpriv;
+ hpriv->flags |= dpriv->pdata->hflags;
hpriv->plat_data = (void *)dpriv;
return hpriv;
@@ -242,22 +255,33 @@ static int ahci_dwc_init_dmacr(struct ahci_host_priv *hpriv)
static int ahci_dwc_init_host(struct ahci_host_priv *hpriv)
{
+ struct ahci_dwc_host_priv *dpriv = hpriv->plat_data;
int rc;
rc = ahci_platform_enable_resources(hpriv);
if (rc)
return rc;
+ if (dpriv->pdata->init) {
+ rc = dpriv->pdata->init(hpriv);
+ if (rc)
+ goto err_disable_resources;
+ }
+
ahci_dwc_check_cap(hpriv);
ahci_dwc_init_timer(hpriv);
rc = ahci_dwc_init_dmacr(hpriv);
if (rc)
- goto err_disable_resources;
+ goto err_clear_platform;
return 0;
+err_clear_platform:
+ if (dpriv->pdata->clear)
+ dpriv->pdata->clear(hpriv);
+
err_disable_resources:
ahci_platform_disable_resources(hpriv);
@@ -275,6 +299,12 @@ static int ahci_dwc_reinit_host(struct ahci_host_priv *hpriv)
if (rc)
return rc;
+ if (dpriv->pdata->reinit) {
+ rc = dpriv->pdata->reinit(hpriv);
+ if (rc)
+ goto err_disable_resources;
+ }
+
writel(dpriv->timv, hpriv->mmio + AHCI_DWC_HOST_TIMER1MS);
for_each_set_bit(i, &port_map, AHCI_MAX_PORTS) {
@@ -283,10 +313,20 @@ static int ahci_dwc_reinit_host(struct ahci_host_priv *hpriv)
}
return 0;
+
+err_disable_resources:
+ ahci_platform_disable_resources(hpriv);
+
+ return rc;
}
static void ahci_dwc_clear_host(struct ahci_host_priv *hpriv)
{
+ struct ahci_dwc_host_priv *dpriv = hpriv->plat_data;
+
+ if (dpriv->pdata->clear)
+ dpriv->pdata->clear(hpriv);
+
ahci_platform_disable_resources(hpriv);
}
@@ -371,9 +411,13 @@ static int ahci_dwc_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(ahci_dwc_pm_ops, ahci_dwc_suspend, ahci_dwc_resume);
+struct ahci_dwc_plat_data ahci_dwc_plat = {
+ .pflags = AHCI_PLATFORM_GET_RESETS,
+};
+
static const struct of_device_id ahci_dwc_of_match[] = {
- { .compatible = "snps,dwc-ahci", },
- { .compatible = "snps,spear-ahci", },
+ { .compatible = "snps,dwc-ahci", &ahci_dwc_plat },
+ { .compatible = "snps,spear-ahci", &ahci_dwc_plat },
{},
};
MODULE_DEVICE_TABLE(of, ahci_dwc_of_match);
--
2.35.1
next prev parent reply other threads:[~2022-05-11 23:21 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-11 23:17 [PATCH v3 00/23] ata: ahci: Add DWC/Baikal-T1 AHCI SATA support Serge Semin
2022-05-11 23:17 ` [PATCH v3 01/23] dt-bindings: ata: ahci-platform: Drop dma-coherent property declaration Serge Semin
2022-05-12 6:14 ` Hannes Reinecke
2022-05-17 18:58 ` Rob Herring
2022-05-21 9:22 ` Serge Semin
2022-05-24 14:57 ` Rob Herring
2022-05-25 10:01 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 02/23] dt-bindings: ata: ahci-platform: Detach common AHCI bindings Serge Semin
2022-05-12 6:19 ` Hannes Reinecke
2022-05-12 11:51 ` Serge Semin
2022-05-17 19:10 ` Rob Herring
2022-05-22 15:02 ` Serge Semin
2022-05-24 15:19 ` Rob Herring
2022-05-27 10:10 ` Serge Semin
2022-06-01 0:51 ` Rob Herring
2022-05-11 23:17 ` [PATCH v3 03/23] dt-bindings: ata: ahci-platform: Clarify common AHCI props constraints Serge Semin
2022-05-12 6:21 ` Hannes Reinecke
2022-05-12 12:01 ` Serge Semin
2022-05-12 8:11 ` Sergei Shtylyov
2022-05-12 12:04 ` Serge Semin
2022-05-17 19:14 ` Rob Herring
2022-05-22 15:08 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 04/23] dt-bindings: ata: sata: Extend number of SATA ports Serge Semin
2022-05-12 6:23 ` Hannes Reinecke
2022-05-17 19:15 ` Rob Herring
2022-05-11 23:17 ` [PATCH v3 05/23] ata: libahci_platform: Explicitly set rc on devres_alloc failure Serge Semin
2022-05-12 6:27 ` Hannes Reinecke
2022-05-12 10:32 ` Damien Le Moal
2022-05-12 12:31 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 06/23] ata: libahci_platform: Convert to using platform devm-ioremap methods Serge Semin
2022-05-12 6:31 ` Hannes Reinecke
2022-05-11 23:17 ` [PATCH v3 07/23] ata: libahci_platform: Convert to using devm bulk clocks API Serge Semin
2022-05-12 6:31 ` Hannes Reinecke
2022-05-12 18:32 ` kernel test robot
2022-05-11 23:17 ` [PATCH v3 08/23] ata: libahci_platform: Add function returning a clock-handle by id Serge Semin
2022-05-12 6:32 ` Hannes Reinecke
2022-05-12 14:26 ` Serge Semin
2022-05-13 9:32 ` Damien Le Moal
2022-05-13 13:31 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 09/23] ata: libahci_platform: Sanity check the DT child nodes number Serge Semin
2022-05-12 6:34 ` Hannes Reinecke
2022-05-12 8:24 ` Sergei Shtylyov
2022-05-12 14:40 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 10/23] ata: libahci_platform: Parse ports-implemented property in resources getter Serge Semin
2022-05-12 6:48 ` Hannes Reinecke
2022-05-12 14:31 ` Serge Semin
2022-05-11 23:17 ` [PATCH v3 11/23] ata: libahci_platform: Introduce reset assertion/deassertion methods Serge Semin
2022-05-12 6:54 ` Hannes Reinecke
2022-05-11 23:17 ` [PATCH v3 12/23] dt-bindings: ata: ahci: Add platform capability properties Serge Semin
2022-05-12 6:56 ` Hannes Reinecke
2022-05-17 19:20 ` Rob Herring
2022-05-22 17:43 ` Serge Semin
2022-05-11 23:18 ` [PATCH v3 13/23] ata: libahci: Extend port-cmd flags set with port capabilities Serge Semin
2022-05-12 6:57 ` Hannes Reinecke
2022-05-12 15:05 ` Serge Semin
2022-05-13 8:22 ` Sergei Shtylyov
2022-05-13 12:13 ` Serge Semin
2022-05-11 23:18 ` [PATCH v3 14/23] ata: libahci: Discard redundant force_port_map parameter Serge Semin
2022-05-12 7:00 ` Hannes Reinecke
2022-05-11 23:18 ` [PATCH v3 15/23] ata: libahci: Don't read AHCI version twice in the save-config method Serge Semin
2022-05-12 7:00 ` Hannes Reinecke
2022-05-11 23:18 ` [PATCH v3 16/23] ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments Serge Semin
2022-05-12 7:08 ` Hannes Reinecke
2022-05-11 23:18 ` [PATCH v3 17/23] ata: ahci: Introduce firmware-specific caps initialization Serge Semin
2022-05-12 7:05 ` Hannes Reinecke
2022-05-12 15:54 ` Serge Semin
2022-05-11 23:18 ` [PATCH v3 18/23] dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema Serge Semin
2022-05-12 7:08 ` Hannes Reinecke
2022-05-17 20:04 ` Rob Herring
2022-05-22 17:51 ` Serge Semin
2022-05-11 23:18 ` [PATCH v3 19/23] ata: ahci: Add DWC AHCI SATA controller support Serge Semin
2022-05-12 7:09 ` Hannes Reinecke
2022-05-11 23:18 ` [PATCH v3 20/23] dt-bindings: ata: ahci: Add Baikal-T1 AHCI SATA controller DT schema Serge Semin
2022-05-12 7:10 ` Hannes Reinecke
2022-05-17 20:13 ` Rob Herring
2022-05-22 20:49 ` Serge Semin
2022-05-24 15:33 ` Rob Herring
2022-05-27 10:55 ` Serge Semin
2022-05-11 23:18 ` Serge Semin [this message]
2022-05-12 7:12 ` [PATCH v3 21/23] ata: ahci-dwc: Add platform-specific quirks support Hannes Reinecke
2022-05-12 16:29 ` Serge Semin
2022-05-14 0:30 ` kernel test robot
2022-05-11 23:18 ` [PATCH v3 22/23] ata: ahci-dwc: Add Baikal-T1 AHCI SATA interface support Serge Semin
2022-05-12 7:13 ` Hannes Reinecke
2022-05-11 23:18 ` [PATCH v3 23/23] MAINTAINERS: Add maintainers for DWC AHCI SATA driver Serge Semin
2022-05-12 7:16 ` Hannes Reinecke
2022-05-12 16:47 ` Serge Semin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220511231810.4928-22-Sergey.Semin@baikalelectronics.ru \
--to=sergey.semin@baikalelectronics.ru \
--cc=Alexey.Malahov@baikalelectronics.ru \
--cc=Pavel.Parkhomenko@baikalelectronics.ru \
--cc=axboe@kernel.dk \
--cc=damien.lemoal@opensource.wdc.com \
--cc=devicetree@vger.kernel.org \
--cc=fancer.lancer@gmail.com \
--cc=hdegoede@redhat.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).