| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20230605-ep93xx-v3-18-3d63a5f1103e@maquefel.me>
Date: Thu, 20 Jul 2023 14:29:18 +0300
From:
Nikita Shubin via B4 Relay <devnull+nikita.shubin.maquefel.me@...nel.org>
To: Hartley Sweeten <hsweeten@...ionengravers.com>,
Lennert Buytenhek <kernel@...tstofly.org>,
Alexander Sverdlin <alexander.sverdlin@...il.com>,
Russell King <linux@...linux.org.uk>, Lukasz Majewski <lukma@...x.de>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Nikita Shubin <nikita.shubin@...uefel.me>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>, Sebastian Reichel <sre@...nel.org>,
Thierry Reding <thierry.reding@...il.com>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
Mark Brown <broonie@...nel.org>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Vinod Koul <vkoul@...nel.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>,
Damien Le Moal <dlemoal@...nel.org>, Sergey Shtylyov <s.shtylyov@....ru>,
Dmitry Torokhov <dmitry.torokhov@...il.com>, Arnd Bergmann <arnd@...db.de>,
Olof Johansson <olof@...om.net>, soc@...nel.org,
Liam Girdwood <lgirdwood@...il.com>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, Andy Shevchenko <andy@...nel.org>,
Michael Peters <mpeters@...eddedTS.com>, Kris Bahnsen <kris@...eddedTS.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-clk@...r.kernel.org, linux-rtc@...r.kernel.org,
linux-watchdog@...r.kernel.org, linux-pm@...r.kernel.org,
linux-pwm@...r.kernel.org, linux-spi@...r.kernel.org,
netdev@...r.kernel.org, dmaengine@...r.kernel.org,
linux-mtd@...ts.infradead.org, linux-ide@...r.kernel.org,
linux-input@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH v3 18/42] spi: ep93xx: add DT support for Cirrus EP93xx
From: Nikita Shubin <nikita.shubin@...uefel.me>
- add OF ID match table
Instead of platform use_dma flag - check if DT dmas property is present to
decide to use dma ot not.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Tested-by: Alexander Sverdlin <alexander.sverdlin@...il.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@...il.com>
Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>
---
drivers/spi/spi-ep93xx.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 1615fd22f9a2..f93cd506bf17 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -22,6 +22,7 @@
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/property.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/scatterlist.h>
@@ -644,6 +645,23 @@ static void ep93xx_spi_release_dma(struct ep93xx_spi *espi)
free_page((unsigned long)espi->zeropage);
}
+#ifdef CONFIG_OF
+static struct ep93xx_spi_info dt_spi_info;
+
+static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev)
+{
+ if (device_property_present(&pdev->dev, "dmas"))
+ dt_spi_info.use_dma = 1;
+
+ return &dt_spi_info;
+}
+#else
+static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev)
+{
+ return dev_get_platdata(&pdev->dev);
+}
+#endif
+
static int ep93xx_spi_probe(struct platform_device *pdev)
{
struct spi_master *master;
@@ -653,7 +671,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
int irq;
int error;
- info = dev_get_platdata(&pdev->dev);
+ info = ep93xx_spi_get_platdata(pdev);
if (!info) {
dev_err(&pdev->dev, "missing platform data\n");
return -EINVAL;
@@ -726,6 +744,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
/* make sure that the hardware is disabled */
writel(0, espi->mmio + SSPCR1);
+ device_set_node(&master->dev, dev_fwnode(&pdev->dev));
error = devm_spi_register_master(&pdev->dev, master);
if (error) {
dev_err(&pdev->dev, "failed to register SPI master\n");
@@ -753,9 +772,16 @@ static void ep93xx_spi_remove(struct platform_device *pdev)
ep93xx_spi_release_dma(espi);
}
+static const struct of_device_id ep93xx_spi_of_ids[] = {
+ { .compatible = "cirrus,ep9301-spi" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ep93xx_spi_of_ids);
+
static struct platform_driver ep93xx_spi_driver = {
.driver = {
.name = "ep93xx-spi",
+ .of_match_table = ep93xx_spi_of_ids,
},
.probe = ep93xx_spi_probe,
.remove_new = ep93xx_spi_remove,
--
2.39.2
Powered by blists - more mailing lists