[PATCH v2 02/11] net: wireless: ti: wl1251 add device tree support

From: "H. Nikolaus Schaller" <hns@goldelico.com>
To: "Benoît Cousson" <bcousson@baylibre.com>,
	"Tony Lindgren" <tony@atomide.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Russell King" <linux@armlinux.org.uk>,
	"Ulf Hansson" <ulf.hansson@linaro.org>,
	"Kalle Valo" <kvalo@codeaurora.org>,
	"Mike Rapoport" <rppt@linux.ibm.com>,
	"David Sterba" <dsterba@suse.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	"Petr Mladek" <pmladek@suse.com>,
	"Sakari Ailus" <sakari.ailus@linux.intel.com>,
	"H. Nikolaus Schaller" <hns@goldelico.com>,
	"Kefeng Wang" <wangkefeng.wang@huawei.com>,
	"Yangtao Li" <tiny.windzz@gmail.com>,
	"Alexios Zavras" <alexios.zavras@intel.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Allison Randal" <allison@lohutok.net>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"John Stultz" <john.stultz@linaro.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>
Cc: linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
	letux-kernel@openphoenux.org, kernel@pyra-handheld.com
Subject: [PATCH v2 02/11] net: wireless: ti: wl1251 add device tree support
Date: Sat, 19 Oct 2019 20:41:17 +0200	[thread overview]
Message-ID: <062703f6033df5919d814c7312f577e8b2a96838.1571510481.git.hns@goldelico.com> (raw)
In-Reply-To: <cover.1571510481.git.hns@goldelico.com>

We will have the wl1251 defined as a child node of the mmc interface
and can read setup for gpios, interrupts and the ti,use-eeprom
property from there instead of pdata to be provided by pdata-quirks.

Fixes: 81eef6ca9201 ("mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel")

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
---
 drivers/net/wireless/ti/wl1251/sdio.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
index 677f1146ccf0..c54a273713ed 100644
--- a/drivers/net/wireless/ti/wl1251/sdio.c
+++ b/drivers/net/wireless/ti/wl1251/sdio.c
@@ -16,6 +16,9 @@
 #include <linux/irq.h>
 #include <linux/pm_runtime.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
 
 #include "wl1251.h"
 
@@ -217,6 +220,7 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 	struct ieee80211_hw *hw;
 	struct wl1251_sdio *wl_sdio;
 	const struct wl1251_platform_data *wl1251_board_data;
+	struct device_node *np = func->dev.of_node;
 
 	hw = wl1251_alloc_hw();
 	if (IS_ERR(hw))
@@ -248,6 +252,15 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 		wl->power_gpio = wl1251_board_data->power_gpio;
 		wl->irq = wl1251_board_data->irq;
 		wl->use_eeprom = wl1251_board_data->use_eeprom;
+	} else if (np) {
+		wl->use_eeprom =of_property_read_bool(np, "ti,wl1251-has-eeprom");
+		wl->power_gpio = of_get_named_gpio(np, "ti,power-gpio", 0);
+		wl->irq = of_irq_get(np, 0);
+
+		if (wl->power_gpio == -EPROBE_DEFER || wl->irq == -EPROBE_DEFER) {
+			ret = -EPROBE_DEFER;
+			goto disable;
+		}
 	}
 
 	if (gpio_is_valid(wl->power_gpio)) {
-- 
2.19.1

