From: Damien Le Moal <dlemoal@kernel.org>
To: "Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Kishon Vijay Abraham I" <kishon@kernel.org>,
"Shawn Lin" <shawn.lin@rock-chips.com>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Heiko Stuebner" <heiko@sntech.de>,
linux-pci@vger.kernel.org, "Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
Rick Wertenbroek <rick.wertenbroek@gmail.com>,
Wilfred Mallawa <wilfred.mallawa@wdc.com>,
Niklas Cassel <cassel@kernel.org>
Subject: [PATCH v2 15/18] PCI: rockship-ep: Introduce rockchip_pcie_ep_stop()
Date: Sat, 30 Mar 2024 13:19:25 +0900 [thread overview]
Message-ID: <20240330041928.1555578-16-dlemoal@kernel.org> (raw)
In-Reply-To: <20240330041928.1555578-1-dlemoal@kernel.org>
Define the EPC operation ->stop for the rockchip endpoint driver with
the function rockchip_pcie_ep_stop(). This function disables link
training and the controller configuration, as the reverse to what
the start operation defined with rockchip_pcie_ep_start() does.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
drivers/pci/controller/pcie-rockchip-ep.c | 13 +++++++++++++
drivers/pci/controller/pcie-rockchip.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index 9215cac91f61..2767e8f1771d 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -470,6 +470,18 @@ static int rockchip_pcie_ep_start(struct pci_epc *epc)
return 0;
}
+static void rockchip_pcie_ep_stop(struct pci_epc *epc)
+{
+ struct rockchip_pcie_ep *ep = epc_get_drvdata(epc);
+ struct rockchip_pcie *rockchip = &ep->rockchip;
+
+ /* Stop link training and disable configuration */
+ rockchip_pcie_write(rockchip,
+ PCIE_CLIENT_CONF_DISABLE |
+ PCIE_CLIENT_LINK_TRAIN_DISABLE,
+ PCIE_CLIENT_CONFIG);
+}
+
static const struct pci_epc_features rockchip_pcie_epc_features = {
.linkup_notifier = false,
.msi_capable = true,
@@ -494,6 +506,7 @@ static const struct pci_epc_ops rockchip_pcie_epc_ops = {
.get_msi = rockchip_pcie_ep_get_msi,
.raise_irq = rockchip_pcie_ep_raise_irq,
.start = rockchip_pcie_ep_start,
+ .stop = rockchip_pcie_ep_stop,
.get_features = rockchip_pcie_ep_get_features,
};
diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index 30398156095f..0263f158ee8d 100644
--- a/drivers/pci/controller/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
@@ -32,6 +32,7 @@
#define PCIE_CLIENT_CONF_ENABLE HIWORD_UPDATE_BIT(0x0001)
#define PCIE_CLIENT_CONF_DISABLE HIWORD_UPDATE(0x0001, 0)
#define PCIE_CLIENT_LINK_TRAIN_ENABLE HIWORD_UPDATE_BIT(0x0002)
+#define PCIE_CLIENT_LINK_TRAIN_DISABLE HIWORD_UPDATE(0x0002, 0)
#define PCIE_CLIENT_ARI_ENABLE HIWORD_UPDATE_BIT(0x0008)
#define PCIE_CLIENT_CONF_LANE_NUM(x) HIWORD_UPDATE(0x0030, ENCODE_LANES(x))
#define PCIE_CLIENT_MODE_RC HIWORD_UPDATE_BIT(0x0040)
--
2.44.0
next prev parent reply other threads:[~2024-03-30 4:20 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-30 4:19 [PATCH v2 00/18] Improve PCI memory mapping API Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 01/18] PCI: endpoint: Introduce pci_epc_function_is_valid() Damien Le Moal
2024-04-03 6:46 ` Manivannan Sadhasivam
2024-04-05 13:33 ` Niklas Cassel
2024-03-30 4:19 ` [PATCH v2 02/18] PCI: endpoint: Introduce pci_epc_map_align() Damien Le Moal
2024-04-03 7:45 ` Manivannan Sadhasivam
2024-04-03 7:54 ` Damien Le Moal
2024-04-03 9:21 ` Manivannan Sadhasivam
2024-04-03 12:33 ` Kishon Vijay Abraham I
2024-04-04 2:43 ` Damien Le Moal
2024-04-05 12:20 ` Niklas Cassel
2024-04-05 12:43 ` Damien Le Moal
2024-04-05 15:18 ` Niklas Cassel
2024-04-10 11:57 ` Kishon Vijay Abraham I
2024-04-05 8:38 ` Dan Carpenter
2024-03-30 4:19 ` [PATCH v2 03/18] PCI: endpoint: Introduce pci_epc_mem_map()/unmap() Damien Le Moal
2024-04-03 9:48 ` Manivannan Sadhasivam
2024-04-05 14:10 ` Niklas Cassel
2024-03-30 4:19 ` [PATCH v2 04/18] PCI: endpoint: test: Use pci_epc_mem_map/unmap() Damien Le Moal
2024-04-05 13:37 ` Niklas Cassel
2024-03-30 4:19 ` [PATCH v2 05/18] PCI: endpoint: test: Synchronously cancel command handler work Damien Le Moal
2024-04-03 7:47 ` Manivannan Sadhasivam
2024-04-05 13:41 ` Niklas Cassel
2024-03-30 4:19 ` [PATCH v2 06/18] PCI: endpoint: test: Implement link_down event operation Damien Le Moal
2024-04-03 7:48 ` Manivannan Sadhasivam
2024-04-05 13:39 ` Niklas Cassel
2024-04-06 2:24 ` Manivannan Sadhasivam
2024-03-30 4:19 ` [PATCH v2 07/18] PCI: rockchip-ep: Fix address translation unit programming Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 08/18] PCI: rockchip-ep: Use a macro to define EP controller .align feature Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 09/18] PCI: rockchip-ep: Improve rockchip_pcie_ep_unmap_addr() Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 10/18] PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr() Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 11/18] PCI: rockchip-ep: Implement the map_align endpoint controller operation Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 12/18] PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() memory allocations Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 13/18] PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() MSI-X hiding Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 14/18] PCI: rockchip-ep: Refactor endpoint link training enable Damien Le Moal
2024-03-30 4:19 ` Damien Le Moal [this message]
2024-03-30 4:19 ` [PATCH v2 16/18] PCI: rockchip-ep: Improve link training Damien Le Moal
2024-04-03 11:54 ` Rick Wertenbroek
2024-03-30 4:19 ` [PATCH v2 17/18] dt-bindings: pci: rockchip,rk3399-pcie-ep: Add ep-gpios property Damien Le Moal
2024-03-30 9:16 ` Krzysztof Kozlowski
2024-03-31 23:06 ` Damien Le Moal
2024-04-01 9:57 ` Krzysztof Kozlowski
2024-04-01 23:36 ` Damien Le Moal
2024-04-02 7:33 ` Krzysztof Kozlowski
2024-04-02 7:38 ` Damien Le Moal
2024-04-02 7:55 ` Damien Le Moal
2024-04-02 18:10 ` Krzysztof Kozlowski
2024-04-02 23:23 ` Damien Le Moal
2024-04-02 7:38 ` Damien Le Moal
2024-03-30 4:19 ` [PATCH v2 18/18] PCI: rockchip-ep: Handle PERST# signal in endpoint mode Damien Le Moal
2024-04-02 12:36 ` [PATCH v2 00/18] Improve PCI memory mapping API Rick Wertenbroek
2024-04-03 7:50 ` Manivannan Sadhasivam
2024-04-03 7:58 ` Damien Le Moal
2024-04-03 9:25 ` Manivannan Sadhasivam
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=20240330041928.1555578-16-dlemoal@kernel.org \
--to=dlemoal@kernel.org \
--cc=bhelgaas@google.com \
--cc=cassel@kernel.org \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=heiko@sntech.de \
--cc=kishon@kernel.org \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=kw@linux.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-pci@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=lpieralisi@kernel.org \
--cc=manivannan.sadhasivam@linaro.org \
--cc=rick.wertenbroek@gmail.com \
--cc=robh@kernel.org \
--cc=shawn.lin@rock-chips.com \
--cc=wilfred.mallawa@wdc.com \
/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).