From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: John Watts <contact@jookia.org>,
Marc Kleine-Budde <mkl@pengutronix.de>,
Sasha Levin <sashal@kernel.org>,
wg@grandegger.com, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, wens@csie.org,
jernej.skrabec@gmail.com, samuel@sholland.org,
linux-can@vger.kernel.org, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev
Subject: [PATCH AUTOSEL 6.4 12/41] can: sun4i_can: Add support for the Allwinner D1
Date: Fri, 8 Sep 2023 14:15:26 -0400 [thread overview]
Message-ID: <20230908181555.3459640-12-sashal@kernel.org> (raw)
In-Reply-To: <20230908181555.3459640-1-sashal@kernel.org>
From: John Watts <contact@jookia.org>
[ Upstream commit 8abb95250ae6af2d51993da8fcae18da2ce24cc4 ]
The controllers present in the D1 are extremely similar to the R40
and require the same reset quirks, but An extra quirk is needed to support
receiving packets.
Signed-off-by: John Watts <contact@jookia.org>
Link: https://lore.kernel.org/all/20230721221552.1973203-6-contact@jookia.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/can/Kconfig | 4 ++--
drivers/net/can/sun4i_can.c | 12 +++++++++++-
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig
index b190007c01bec..a3ee9d18ea33d 100644
--- a/drivers/net/can/Kconfig
+++ b/drivers/net/can/Kconfig
@@ -186,10 +186,10 @@ config CAN_SLCAN
config CAN_SUN4I
tristate "Allwinner A10 CAN controller"
- depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
+ depends on MACH_SUN4I || MACH_SUN7I || RISCV || COMPILE_TEST
help
Say Y here if you want to use CAN controller found on Allwinner
- A10/A20 SoCs.
+ A10/A20/D1 SoCs.
To compile this driver as a module, choose M here: the module will
be called sun4i_can.
diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index dd0c6cd76c5f5..c3a6b028ea4d6 100644
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -91,6 +91,8 @@
#define SUN4I_REG_BUF12_ADDR 0x0070 /* CAN Tx/Rx Buffer 12 */
#define SUN4I_REG_ACPC_ADDR 0x0040 /* CAN Acceptance Code 0 */
#define SUN4I_REG_ACPM_ADDR 0x0044 /* CAN Acceptance Mask 0 */
+#define SUN4I_REG_ACPC_ADDR_D1 0x0028 /* CAN Acceptance Code 0 on the D1 */
+#define SUN4I_REG_ACPM_ADDR_D1 0x002C /* CAN Acceptance Mask 0 on the D1 */
#define SUN4I_REG_RBUF_RBACK_START_ADDR 0x0180 /* CAN transmit buffer start */
#define SUN4I_REG_RBUF_RBACK_END_ADDR 0x01b0 /* CAN transmit buffer end */
@@ -779,6 +781,11 @@ static const struct sun4ican_quirks sun4ican_quirks_r40 = {
.acp_offset = 0,
};
+static const struct sun4ican_quirks sun4ican_quirks_d1 = {
+ .has_reset = true,
+ .acp_offset = (SUN4I_REG_ACPC_ADDR_D1 - SUN4I_REG_ACPC_ADDR),
+};
+
static const struct of_device_id sun4ican_of_match[] = {
{
.compatible = "allwinner,sun4i-a10-can",
@@ -789,6 +796,9 @@ static const struct of_device_id sun4ican_of_match[] = {
}, {
.compatible = "allwinner,sun8i-r40-can",
.data = &sun4ican_quirks_r40
+ }, {
+ .compatible = "allwinner,sun20i-d1-can",
+ .data = &sun4ican_quirks_d1
}, {
/* sentinel */
},
@@ -915,4 +925,4 @@ module_platform_driver(sun4i_can_driver);
MODULE_AUTHOR("Peter Chen <xingkongcp@gmail.com>");
MODULE_AUTHOR("Gerhard Bertelsmann <info@gerhard-bertelsmann.de>");
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("CAN driver for Allwinner SoCs (A10/A20)");
+MODULE_DESCRIPTION("CAN driver for Allwinner SoCs (A10/A20/D1)");
--
2.40.1
prev parent reply other threads:[~2023-09-08 18:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230908181555.3459640-1-sashal@kernel.org>
2023-09-08 18:15 ` [PATCH AUTOSEL 6.4 11/41] can: sun4i_can: Add acceptance register quirk Sasha Levin
2023-09-08 18:15 ` Sasha Levin [this message]
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