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Message-Id: <2965edc7992ab54dc6c862910775f3466fca6b29.1674499048.git.geert+renesas@glider.be>
Date: Mon, 23 Jan 2023 19:56:13 +0100
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Wolfgang Grandegger <wg@...ndegger.com>,
Marc Kleine-Budde <mkl@...gutronix.de>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>
Cc: Philipp Zabel <p.zabel@...gutronix.de>,
Ulrich Hecht <uli+renesas@...nd.eu>, linux-can@...r.kernel.org,
netdev@...r.kernel.org, devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 11/12] can: rcar_canfd: Add helper variable dev
rcar_canfd_channel_probe() and rcar_canfd_probe() have many users of
"pdev->dev". Introduce shorthands to simplify the code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
drivers/net/can/rcar/rcar_canfd.c | 86 +++++++++++++++----------------
1 file changed, 42 insertions(+), 44 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index cfcf1a93fb58c36f..ef4e1b9a9e1ee280 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1715,13 +1715,14 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
{
const struct rcar_canfd_hw_info *info = gpriv->info;
struct platform_device *pdev = gpriv->pdev;
+ struct device *dev = &pdev->dev;
struct rcar_canfd_channel *priv;
struct net_device *ndev;
int err = -ENODEV;
ndev = alloc_candev(sizeof(*priv), RCANFD_FIFO_DEPTH);
if (!ndev) {
- dev_err(&pdev->dev, "alloc_candev() failed\n");
+ dev_err(dev, "alloc_candev() failed\n");
return -ENOMEM;
}
priv = netdev_priv(ndev);
@@ -1734,7 +1735,7 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
priv->channel = ch;
priv->gpriv = gpriv;
priv->can.clock.freq = fcan_freq;
- dev_info(&pdev->dev, "can_clk rate is %u\n", priv->can.clock.freq);
+ dev_info(dev, "can_clk rate is %u\n", priv->can.clock.freq);
if (info->multi_channel_irqs) {
char *irq_name;
@@ -1753,31 +1754,31 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
goto fail;
}
- irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
- "canfd.ch%d_err", ch);
+ irq_name = devm_kasprintf(dev, GFP_KERNEL, "canfd.ch%d_err",
+ ch);
if (!irq_name) {
err = -ENOMEM;
goto fail;
}
- err = devm_request_irq(&pdev->dev, err_irq,
+ err = devm_request_irq(dev, err_irq,
rcar_canfd_channel_err_interrupt, 0,
irq_name, priv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq CH Err(%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq CH Err(%d) failed, error %d\n",
err_irq, err);
goto fail;
}
- irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
- "canfd.ch%d_trx", ch);
+ irq_name = devm_kasprintf(dev, GFP_KERNEL, "canfd.ch%d_trx",
+ ch);
if (!irq_name) {
err = -ENOMEM;
goto fail;
}
- err = devm_request_irq(&pdev->dev, tx_irq,
+ err = devm_request_irq(dev, tx_irq,
rcar_canfd_channel_tx_interrupt, 0,
irq_name, priv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq Tx (%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq Tx (%d) failed, error %d\n",
tx_irq, err);
goto fail;
}
@@ -1801,7 +1802,7 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
priv->can.do_set_mode = rcar_canfd_do_set_mode;
priv->can.do_get_berr_counter = rcar_canfd_get_berr_counter;
- SET_NETDEV_DEV(ndev, &pdev->dev);
+ SET_NETDEV_DEV(ndev, dev);
netif_napi_add_weight(ndev, &priv->napi, rcar_canfd_rx_poll,
RCANFD_NAPI_WEIGHT);
@@ -1809,11 +1810,10 @@ static int rcar_canfd_channel_probe(struct rcar_canfd_global *gpriv, u32 ch,
gpriv->ch[priv->channel] = priv;
err = register_candev(ndev);
if (err) {
- dev_err(&pdev->dev,
- "register_candev() failed, error %d\n", err);
+ dev_err(dev, "register_candev() failed, error %d\n", err);
goto fail_candev;
}
- dev_info(&pdev->dev, "device registered (channel %u)\n", priv->channel);
+ dev_info(dev, "device registered (channel %u)\n", priv->channel);
return 0;
fail_candev:
@@ -1837,6 +1837,7 @@ static void rcar_canfd_channel_remove(struct rcar_canfd_global *gpriv, u32 ch)
static int rcar_canfd_probe(struct platform_device *pdev)
{
const struct rcar_canfd_hw_info *info;
+ struct device *dev = &pdev->dev;
void __iomem *addr;
u32 sts, ch, fcan_freq;
struct rcar_canfd_global *gpriv;
@@ -1848,14 +1849,14 @@ static int rcar_canfd_probe(struct platform_device *pdev)
char name[9] = "channelX";
int i;
- info = of_device_get_match_data(&pdev->dev);
+ info = of_device_get_match_data(dev);
- if (of_property_read_bool(pdev->dev.of_node, "renesas,no-can-fd"))
+ if (of_property_read_bool(dev->of_node, "renesas,no-can-fd"))
fdmode = false; /* Classical CAN only mode */
for (i = 0; i < info->max_channels; ++i) {
name[7] = '0' + i;
- of_child = of_get_child_by_name(pdev->dev.of_node, name);
+ of_child = of_get_child_by_name(dev->of_node, name);
if (of_child && of_device_is_available(of_child))
channels_mask |= BIT(i);
of_node_put(of_child);
@@ -1888,7 +1889,7 @@ static int rcar_canfd_probe(struct platform_device *pdev)
}
/* Global controller context */
- gpriv = devm_kzalloc(&pdev->dev, sizeof(*gpriv), GFP_KERNEL);
+ gpriv = devm_kzalloc(dev, sizeof(*gpriv), GFP_KERNEL);
if (!gpriv)
return -ENOMEM;
@@ -1897,32 +1898,30 @@ static int rcar_canfd_probe(struct platform_device *pdev)
gpriv->fdmode = fdmode;
gpriv->info = info;
- gpriv->rstc1 = devm_reset_control_get_optional_exclusive(&pdev->dev,
- "rstp_n");
+ gpriv->rstc1 = devm_reset_control_get_optional_exclusive(dev, "rstp_n");
if (IS_ERR(gpriv->rstc1))
- return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->rstc1),
+ return dev_err_probe(dev, PTR_ERR(gpriv->rstc1),
"failed to get rstp_n\n");
- gpriv->rstc2 = devm_reset_control_get_optional_exclusive(&pdev->dev,
- "rstc_n");
+ gpriv->rstc2 = devm_reset_control_get_optional_exclusive(dev, "rstc_n");
if (IS_ERR(gpriv->rstc2))
- return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->rstc2),
+ return dev_err_probe(dev, PTR_ERR(gpriv->rstc2),
"failed to get rstc_n\n");
/* Peripheral clock */
- gpriv->clkp = devm_clk_get(&pdev->dev, "fck");
+ gpriv->clkp = devm_clk_get(dev, "fck");
if (IS_ERR(gpriv->clkp))
- return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->clkp),
+ return dev_err_probe(dev, PTR_ERR(gpriv->clkp),
"cannot get peripheral clock\n");
/* fCAN clock: Pick External clock. If not available fallback to
* CANFD clock
*/
- gpriv->can_clk = devm_clk_get(&pdev->dev, "can_clk");
+ gpriv->can_clk = devm_clk_get(dev, "can_clk");
if (IS_ERR(gpriv->can_clk) || (clk_get_rate(gpriv->can_clk) == 0)) {
- gpriv->can_clk = devm_clk_get(&pdev->dev, "canfd");
+ gpriv->can_clk = devm_clk_get(dev, "canfd");
if (IS_ERR(gpriv->can_clk))
- return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->can_clk),
+ return dev_err_probe(dev, PTR_ERR(gpriv->can_clk),
"cannot get canfd clock\n");
gpriv->fcan = RCANFD_CANFDCLK;
@@ -1945,39 +1944,38 @@ static int rcar_canfd_probe(struct platform_device *pdev)
/* Request IRQ that's common for both channels */
if (info->shared_global_irqs) {
- err = devm_request_irq(&pdev->dev, ch_irq,
+ err = devm_request_irq(dev, ch_irq,
rcar_canfd_channel_interrupt, 0,
"canfd.ch_int", gpriv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
ch_irq, err);
goto fail_dev;
}
- err = devm_request_irq(&pdev->dev, g_irq,
- rcar_canfd_global_interrupt, 0,
- "canfd.g_int", gpriv);
+ err = devm_request_irq(dev, g_irq, rcar_canfd_global_interrupt,
+ 0, "canfd.g_int", gpriv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
g_irq, err);
goto fail_dev;
}
} else {
- err = devm_request_irq(&pdev->dev, g_recc_irq,
+ err = devm_request_irq(dev, g_recc_irq,
rcar_canfd_global_receive_fifo_interrupt, 0,
"canfd.g_recc", gpriv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
g_recc_irq, err);
goto fail_dev;
}
- err = devm_request_irq(&pdev->dev, g_err_irq,
+ err = devm_request_irq(dev, g_err_irq,
rcar_canfd_global_err_interrupt, 0,
"canfd.g_err", gpriv);
if (err) {
- dev_err(&pdev->dev, "devm_request_irq(%d) failed, error %d\n",
+ dev_err(dev, "devm_request_irq(%d) failed, error %d\n",
g_err_irq, err);
goto fail_dev;
}
@@ -1995,14 +1993,14 @@ static int rcar_canfd_probe(struct platform_device *pdev)
/* Enable peripheral clock for register access */
err = clk_prepare_enable(gpriv->clkp);
if (err) {
- dev_err(&pdev->dev,
- "failed to enable peripheral clock, error %d\n", err);
+ dev_err(dev, "failed to enable peripheral clock, error %d\n",
+ err);
goto fail_reset;
}
err = rcar_canfd_reset_controller(gpriv);
if (err) {
- dev_err(&pdev->dev, "reset controller failed\n");
+ dev_err(dev, "reset controller failed\n");
goto fail_clk;
}
@@ -2032,7 +2030,7 @@ static int rcar_canfd_probe(struct platform_device *pdev)
err = readl_poll_timeout((gpriv->base + RCANFD_GSTS), sts,
!(sts & RCANFD_GSTS_GNOPM), 2, 500000);
if (err) {
- dev_err(&pdev->dev, "global operational mode failed\n");
+ dev_err(dev, "global operational mode failed\n");
goto fail_mode;
}
@@ -2043,7 +2041,7 @@ static int rcar_canfd_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, gpriv);
- dev_info(&pdev->dev, "global operational state (clk %d, fdmode %d)\n",
+ dev_info(dev, "global operational state (clk %d, fdmode %d)\n",
gpriv->fcan, gpriv->fdmode);
return 0;
--
2.34.1
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