Received-SPF: pass (google.com: domain of linux-kernel+bounces-53125-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1;
From: Frank Li <Frank.Li@nxp.com>
To: lpieralisi@kernel.org
Cc: Frank.li@nxp.com,
	bhelgaas@google.com,
	conor+dt@kernel.org,
	devicetree@vger.kernel.org,
	festevam@gmail.com,
	helgaas@kernel.org,
	hongxing.zhu@nxp.com,
	imx@lists.linux.dev,
	kernel@pengutronix.de,
	krzysztof.kozlowski+dt@linaro.org,
	krzysztof.kozlowski@linaro.org,
	kw@linux.com,
	l.stach@pengutronix.de,
	linux-arm-kernel@lists.infradead.org,
	linux-imx@nxp.com,
	linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org,
	manivannan.sadhasivam@linaro.org,
	robh@kernel.org,
	s.hauer@pengutronix.de,
	shawnguo@kernel.org
Subject: [PATCH v10 12/14] PCI: imx6: Add epc_features in imx6_pcie_drvdata
Date: Mon,  5 Feb 2024 12:33:33 -0500
Message-Id: <20240205173335.1120469-13-Frank.Li@nxp.com>
In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com>
References: <20240205173335.1120469-1-Frank.Li@nxp.com>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0:
	=?us-ascii?Q?SMvWXUT0GDA9wAyQBUYphxFTwT1e2UANsDqWHRNpD02sBFXTuzUsv9hDqNXJ?=
 =?us-ascii?Q?rQHVBwWHTvx7gb9t8+B77bPLcxisuZjEwNvJyCU+rgBuhqYDB/Kq0ThtlB21?=
 =?us-ascii?Q?3oMFOuPidf9T+a/h7KQ9uq7y2uKXDiAjtKhC82oDc70GcYXFPMWdHjh8s1EA?=
 =?us-ascii?Q?sk6tR9f4GaW0wKZ3s+N9qiyMN9elST1xpF9516Ta6Vl818xhqYe0R80cySDz?=
 =?us-ascii?Q?Wlqu9jlCLArTZp59uPQEvVjs3Rqpw7GnUWT24Aqp51iplMUsv+Vy8DWl1P0P?=
 =?us-ascii?Q?NozD/bvcyPzVYwz0fBiBL+ZEyk1d7hbQIAMfItp4OXOw0IqbpdSFkcTERMkv?=
 =?us-ascii?Q?VZ0tdFVNjYdaNj2vYyRtGBiqzMY8ai3am6BOxFH3Ssv5Mh1wnJmZGmYiZiFb?=
 =?us-ascii?Q?Grt54hMv8ilftrQvHqF2JbOgDX0xq4StpIbDM+6lGZY25FJNsLL3FiVHKup2?=
 =?us-ascii?Q?bOoMU3Rcteo2eJ+x0K2jE6clWH3VtGPCrozmU0zuYZAU4skmQS0kJ6TJ0ZRE?=
 =?us-ascii?Q?hrhhmpujVwLBSIhRdBQ6SkF6R/noiNTx2kjBPZ0mnwpEV+mpSiGdXa28v7ee?=
 =?us-ascii?Q?0R25QmV4pX1O1SZ7Ru0Z0Grvg43qaw24PVH2Nq87XDvnfgwihQJfbNw0X6Eq?=
 =?us-ascii?Q?Kn3KEfCe6zTnAzASG+xmOdqTY9fAGEdBvYu8rNj00IC0sNWRQNMfr3PUnIQN?=
 =?us-ascii?Q?Y7OqIOz0VS0OnuONpuBQ4B1VZMn8afPoltQmLKDVHS1w1rbRn1J99o6C1Kj+?=
 =?us-ascii?Q?zJWFJd7sF045L9GCFYKZshXIB8Ln9r+twDAxjADxACw0wxrpp1BjMGVDiQmf?=
 =?us-ascii?Q?ybgEe13WUOl1gSdd1W8hgcBIuej9cMxulQrd50S3YUPMRyYQLxIbh92zawnw?=
 =?us-ascii?Q?ts2FXoZO82qzPrmMkuSce2ksmeEJoQ+RRkCOUltMbVZYjbOa9j9JpKJtcX8j?=
 =?us-ascii?Q?3XB7O8xdJw1isFTh9+295Rg3xk/5kEIZEu0N8R6uIOaBH3RpQ+gZAsplA0i4?=
 =?us-ascii?Q?FtuLc46ilp3ozjxIXIZnwc0Atsy1Ev6btcsTnXpuU77C+H3x6aQAZYw59DDU?=
 =?us-ascii?Q?c+ZpIR5eFUXAVIfbrL/UVR7TSyNbZHK+jj1iprfcIPj3MsfIAvFP9uf1VPJh?=
 =?us-ascii?Q?QV51pMJYPxrO865+okUapgXKWthzaiFz/RAb90GY48qnGRfHUN4e8dcnNlqW?=
 =?us-ascii?Q?nWpikIQ6OcsQaeDy9c3HsGA8NWuvyQ5JvGm5LdF9vC/oFVbqcyLz3EFoS1yy?=
 =?us-ascii?Q?yaCzyyqoZvx2zWPp8jsi262z0axpsEvW7nnfZX/++J9OzTG0tbsIPejmS3B9?=
 =?us-ascii?Q?sR28anGmpGVSTY3oI/T5v29i1+ol4MkpijQ6i3imKMPGHf9O6FKdffzcBoBc?=
 =?us-ascii?Q?Mvp2GYTapIkfaMhDfT9ia6GQBobiPjFSOGQXQKRnPdxgD3MR0C4mBX4e4l0h?=
 =?us-ascii?Q?O+qIvNYe+khKSGol9sZVtKyAhKMYy7KpBmscMUAEEMVmgadDhAz+1Y+6Cu7L?=
 =?us-ascii?Q?6joLw7vL0GTyDNbqyCSFH8Q1xt3exXApv29Fs5D98iSO9eJ3l63j4CPDGoLC?=
 =?us-ascii?Q?FR+zN/DsmBNg5Q0n/Z22/WbYgLuV+gNtUvW02ABX?=
X-OriginatorOrg: nxp.com
X-MS-Exchange-CrossTenant-Network-Message-Id: c3fc01c6-6955-42ee-ec4e-08dc2670c3bc
X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2024 17:34:54.3138
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: KNECFfGCcGwYCKze7vv2BIqPOae+8gmAS0F2hqQ3NJS9/T6NYoO3YnKqTqa34UP5jvzaLqN7lVY00n/s/RN3+Q==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB7080

The i.MX EP exhibits variations in epc_features among different EP
configurations. This introduces the addition of epc_features in
imx6_pcie_drvdata to accommodate these differences. It's important to note
that there are no functional changes in this commit; instead, it lays the
groundwork for supporting i.MX95 EP functions.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

Notes:
    Change from v7 to v8
    - Added  Manivannan Sadhasivam's review tag
    Change from v6 to v7
    - none
    Change from v5 to v6
    - add missed maxitems.
    - add comments about reuse linux,pci-domain as controller id.
    linux,pci-domain have not defined at PCI endpoint side.
    
    Change from v1 to v3
    - new patch at v3

 drivers/pci/controller/dwc/pci-imx6.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 9cc6802e93641..c2098e59fde1e 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -105,6 +105,7 @@ struct imx6_pcie_drvdata {
 	const u32 ltssm_mask;
 	const u32 mode_off[IMX6_PCIE_MAX_INSTANCES];
 	const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES];
+	const struct pci_epc_features *epc_features;
 	int (*init_phy)(struct imx6_pcie *pcie);
 };
 
@@ -1052,7 +1053,10 @@ static const struct pci_epc_features imx8m_pcie_epc_features = {
 static const struct pci_epc_features*
 imx6_pcie_ep_get_features(struct dw_pcie_ep *ep)
 {
-	return &imx8m_pcie_epc_features;
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci);
+
+	return imx6_pcie->drvdata->epc_features;
 }
 
 static const struct dw_pcie_ep_ops pcie_ep_ops = {
@@ -1532,6 +1536,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
 		.mode_off[1] = IOMUXC_GPR12,
 		.mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 		.init_phy = imx8mq_pcie_init_phy,
 	},
 	[IMX8MM_EP] = {
@@ -1543,6 +1548,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.clks_cnt = ARRAY_SIZE(imx8mm_clks),
 		.mode_off[0] = IOMUXC_GPR12,
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 	},
 	[IMX8MP_EP] = {
 		.variant = IMX8MP_EP,
@@ -1553,6 +1559,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.clks_cnt = ARRAY_SIZE(imx8mm_clks),
 		.mode_off[0] = IOMUXC_GPR12,
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 	},
 };
 
-- 
2.34.1