From: Marc Kleine-Budde <mkl@pengutronix.de>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org,
kernel@pengutronix.de, Marc Kleine-Budde <mkl@pengutronix.de>
Subject: [net-next 16/25] can: flexcan: factor out enabling and disabling of interrupts into separate function
Date: Fri, 20 Nov 2020 14:33:09 +0100 [thread overview]
Message-ID: <20201120133318.3428231-17-mkl@pengutronix.de> (raw)
In-Reply-To: <20201120133318.3428231-1-mkl@pengutronix.de>
The upcoming patches are going to move the enabling and disabling of the
interrupts. Introduce convenience functions to make these patches simpler.
Link: https://lore.kernel.org/r/20201119100917.3013281-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
drivers/net/can/flexcan.c | 41 ++++++++++++++++++++++++++-------------
1 file changed, 27 insertions(+), 14 deletions(-)
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 56a6bcc6d9d7..681a4d82681c 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -1346,6 +1346,31 @@ static void flexcan_ram_init(struct net_device *dev)
priv->write(reg_ctrl2, ®s->ctrl2);
}
+static void flexcan_chip_interrupts_enable(const struct net_device *dev)
+{
+ const struct flexcan_priv *priv = netdev_priv(dev);
+ struct flexcan_regs __iomem *regs = priv->regs;
+ u64 reg_imask;
+
+ disable_irq(dev->irq);
+ priv->write(priv->reg_ctrl_default, ®s->ctrl);
+ reg_imask = priv->rx_mask | priv->tx_mask;
+ priv->write(upper_32_bits(reg_imask), ®s->imask2);
+ priv->write(lower_32_bits(reg_imask), ®s->imask1);
+ enable_irq(dev->irq);
+}
+
+static void flexcan_chip_interrupts_disable(const struct net_device *dev)
+{
+ const struct flexcan_priv *priv = netdev_priv(dev);
+ struct flexcan_regs __iomem *regs = priv->regs;
+
+ priv->write(0, ®s->imask2);
+ priv->write(0, ®s->imask1);
+ priv->write(priv->reg_ctrl_default & ~FLEXCAN_CTRL_ERR_ALL,
+ ®s->ctrl);
+}
+
/* flexcan_chip_start
*
* this functions is entered with clocks enabled
@@ -1356,7 +1381,6 @@ static int flexcan_chip_start(struct net_device *dev)
struct flexcan_priv *priv = netdev_priv(dev);
struct flexcan_regs __iomem *regs = priv->regs;
u32 reg_mcr, reg_ctrl, reg_ctrl2, reg_mecr;
- u64 reg_imask;
int err, i;
struct flexcan_mb __iomem *mb;
@@ -1574,13 +1598,7 @@ static int flexcan_chip_start(struct net_device *dev)
priv->can.state = CAN_STATE_ERROR_ACTIVE;
- /* enable interrupts atomically */
- disable_irq(dev->irq);
- priv->write(priv->reg_ctrl_default, ®s->ctrl);
- reg_imask = priv->rx_mask | priv->tx_mask;
- priv->write(upper_32_bits(reg_imask), ®s->imask2);
- priv->write(lower_32_bits(reg_imask), ®s->imask1);
- enable_irq(dev->irq);
+ flexcan_chip_interrupts_enable(dev);
/* print chip status */
netdev_dbg(dev, "%s: reading mcr=0x%08x ctrl=0x%08x\n", __func__,
@@ -1600,7 +1618,6 @@ static int flexcan_chip_start(struct net_device *dev)
static int __flexcan_chip_stop(struct net_device *dev, bool disable_on_error)
{
struct flexcan_priv *priv = netdev_priv(dev);
- struct flexcan_regs __iomem *regs = priv->regs;
int err;
/* freeze + disable module */
@@ -1611,11 +1628,7 @@ static int __flexcan_chip_stop(struct net_device *dev, bool disable_on_error)
if (err && !disable_on_error)
goto out_chip_unfreeze;
- /* Disable all interrupts */
- priv->write(0, ®s->imask2);
- priv->write(0, ®s->imask1);
- priv->write(priv->reg_ctrl_default & ~FLEXCAN_CTRL_ERR_ALL,
- ®s->ctrl);
+ flexcan_chip_interrupts_disable(dev);
priv->can.state = CAN_STATE_STOPPED;
--
2.29.2
next prev parent reply other threads:[~2020-11-20 13:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-20 13:32 pull-request: can-next 2020-11-20 Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 01/25] can: j1939: add tables for the CAN identifier and its fields Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 02/25] can: add optional DLC element to Classical CAN frame structure Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 03/25] can: rename get_can_dlc() macro with can_cc_dlc2len() Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 04/25] can: remove obsolete get_canfd_dlc() macro Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 05/25] can: replace can_dlc as variable/element for payload length Marc Kleine-Budde
2020-11-20 13:32 ` [net-next 06/25] can: rename CAN FD related can_len2dlc and can_dlc2len helpers Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 07/25] can: update documentation for DLC usage in Classical CAN Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 08/25] can: drivers: introduce helpers to access Classical CAN DLC values Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 09/25] can: drivers: add len8_dlc support for various CAN adapters Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 10/25] can: drivers: add len8_dlc support for esd_usb2 CAN adapter Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 11/25] can: gw: support modification of Classical CAN DLCs Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 12/25] dt-bindings: can: fsl,flexcan: add uint32 reference to clock-frequency property Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 13/25] dt-bindings: can: fsl,flexcan: fix fsl,clk-source property Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 14/25] dt-bindings: firmware: add IMX_SC_R_CAN(x) macro for CAN Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 15/25] can: flexcan: rename macro FLEXCAN_QUIRK_SETUP_STOP_MODE -> FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR Marc Kleine-Budde
2020-11-20 13:33 ` Marc Kleine-Budde [this message]
2020-11-20 13:33 ` [net-next 17/25] can: flexcan: move enabling/disabling of interrupts from flexcan_chip_{start,stop}() to callers Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 18/25] can: flexcan: flexcan_rx_offload_setup(): factor out mailbox and rx-offload setup into separate function Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 19/25] can: flexcan: flexcan_open(): completely initialize controller before requesting IRQ Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 20/25] can: flexcan: flexcan_close(): change order if commands to properly shut down the controller Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 21/25] can: kvaser_usb: Add USB_{LEAF,HYDRA}_PRODUCT_ID_END defines Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 22/25] can: kvaser_usb: Add new Kvaser Leaf v2 devices Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 23/25] can: kvaser_usb: kvaser_usb_hydra: Add support for new device variant Marc Kleine-Budde
2020-11-20 13:33 ` [net-next 24/25] can: kvaser_usb: Add new Kvaser hydra devices Marc Kleine-Budde
2020-11-20 13:44 ` [PATCH 25/25] can: mcp251xfd: remove useless code in mcp251xfd_chip_softreset Marc Kleine-Budde
2020-11-21 23:09 ` pull-request: can-next 2020-11-20 Jakub Kicinski
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