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>,
Hannes Reinecke <hare@suse.de>,
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 v4 21/23] ata: ahci-dwc: Add platform-specific quirks support
Date: Fri, 10 Jun 2022 11:17:59 +0300 [thread overview]
Message-ID: <20220610081801.11854-22-Sergey.Semin@baikalelectronics.ru> (raw)
In-Reply-To: <20220610081801.11854-1-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)
Changelog v4:
- Convert ahci_dwc_plat to being statically defined. (@kbot)
---
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 8c2510933a31..ab4180b7ed23 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);
+static 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:[~2022-06-10 8:19 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 8:17 [PATCH v4 00/23] ata: ahci: Add DWC/Baikal-T1 AHCI SATA support Serge Semin
2022-06-10 8:17 ` [PATCH v4 01/23] dt-bindings: ata: ahci-platform: Move dma-coherent to sata-common.yaml Serge Semin
2022-06-14 22:02 ` Rob Herring
2022-06-14 22:15 ` Florian Fainelli
2022-06-10 8:17 ` [PATCH v4 02/23] dt-bindings: ata: ahci-platform: Detach common AHCI bindings Serge Semin
2022-06-14 22:16 ` Rob Herring
2022-06-10 8:17 ` [PATCH v4 03/23] dt-bindings: ata: ahci-platform: Clarify common AHCI props constraints Serge Semin
2022-06-14 22:17 ` Rob Herring
2022-06-10 8:17 ` [PATCH v4 04/23] dt-bindings: ata: sata: Extend number of SATA ports Serge Semin
2022-06-10 8:17 ` [PATCH v4 05/23] dt-bindings: ata: sata-brcm: Apply common AHCI schema Serge Semin
2022-06-14 22:15 ` Florian Fainelli
2022-06-14 22:17 ` Rob Herring
2022-06-10 8:17 ` [PATCH v4 06/23] ata: libahci_platform: Convert to using platform devm-ioremap methods Serge Semin
2022-06-10 8:17 ` [PATCH v4 07/23] ata: libahci_platform: Convert to using devm bulk clocks API Serge Semin
2022-06-14 8:22 ` Damien Le Moal
2022-06-15 20:45 ` Serge Semin
2022-06-16 0:23 ` Damien Le Moal
2022-06-17 19:54 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 08/23] ata: libahci_platform: Sanity check the DT child nodes number Serge Semin
2022-06-14 8:23 ` Damien Le Moal
2022-06-15 20:53 ` Serge Semin
2022-06-16 0:25 ` Damien Le Moal
2022-06-17 20:18 ` Serge Semin
2022-06-18 6:49 ` Damien Le Moal
2022-06-10 8:17 ` [PATCH v4 09/23] ata: libahci_platform: Parse ports-implemented property in resources getter Serge Semin
2022-06-10 8:17 ` [PATCH v4 10/23] ata: libahci_platform: Introduce reset assertion/deassertion methods Serge Semin
2022-06-10 8:17 ` [PATCH v4 11/23] dt-bindings: ata: ahci: Add platform capability properties Serge Semin
2022-06-14 22:19 ` Rob Herring
2022-06-15 21:56 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 12/23] ata: libahci: Extend port-cmd flags set with port capabilities Serge Semin
2022-06-14 8:32 ` Damien Le Moal
2022-06-15 20:58 ` Serge Semin
2022-06-16 0:28 ` Damien Le Moal
2022-06-17 20:31 ` Serge Semin
2022-06-18 6:52 ` Damien Le Moal
2022-06-18 8:10 ` Serge Semin
2022-06-28 12:08 ` Serge Semin
2022-06-29 1:35 ` Damien Le Moal
2022-06-29 1:47 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 13/23] ata: libahci: Discard redundant force_port_map parameter Serge Semin
2022-06-10 8:17 ` [PATCH v4 14/23] ata: libahci: Don't read AHCI version twice in the save-config method Serge Semin
2022-06-10 8:17 ` [PATCH v4 15/23] ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments Serge Semin
2022-06-14 8:38 ` Damien Le Moal
2022-06-15 21:25 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 16/23] ata: ahci: Introduce firmware-specific caps initialization Serge Semin
2022-06-14 8:42 ` Damien Le Moal
2022-06-15 21:11 ` Serge Semin
2022-06-16 0:29 ` Damien Le Moal
2022-06-17 20:32 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 17/23] dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema Serge Semin
2022-06-14 22:27 ` Rob Herring
2022-06-17 19:37 ` Serge Semin
2022-06-28 12:10 ` Serge Semin
2022-07-06 22:36 ` Rob Herring
2022-07-07 15:25 ` Serge Semin
2022-07-12 20:13 ` Rob Herring
2022-07-12 20:43 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 18/23] ata: libahci_platform: Add function returning a clock-handle by id Serge Semin
2022-06-14 8:45 ` Damien Le Moal
2022-06-15 21:24 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 19/23] ata: ahci: Add DWC AHCI SATA controller support Serge Semin
2022-06-10 16:34 ` Randy Dunlap
2022-06-10 21:58 ` Serge Semin
2022-06-10 23:34 ` Randy Dunlap
2022-06-15 21:30 ` Serge Semin
2022-06-16 0:31 ` Damien Le Moal
2022-06-17 20:36 ` Serge Semin
2022-06-18 6:54 ` Damien Le Moal
2022-06-14 8:53 ` Damien Le Moal
2022-06-15 21:48 ` Serge Semin
2022-06-16 0:33 ` Damien Le Moal
2022-06-17 20:34 ` Serge Semin
2022-06-10 8:17 ` [PATCH v4 20/23] dt-bindings: ata: ahci: Add Baikal-T1 AHCI SATA controller DT schema Serge Semin
2022-06-14 22:29 ` Rob Herring
2022-06-17 19:49 ` Serge Semin
2022-06-10 8:17 ` Serge Semin [this message]
2022-06-10 8:18 ` [PATCH v4 22/23] ata: ahci-dwc: Add Baikal-T1 AHCI SATA interface support Serge Semin
2022-06-10 8:18 ` [PATCH v4 23/23] MAINTAINERS: Add maintainers for DWC AHCI SATA driver Serge Semin
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