[PATCH v3 0/8] wilink: add device tree support

[PATCH v3 0/8] wilink: add device tree support

[Luciano Coelho]

Hi,

This patch series adds device tree support to the wlcore_sdio driver,
which is used by WiLink6, WiLink7 and WiLink8.

The first patches do some clean-up to make the data needed in the
wilink device tree node smaller.  The remaining patches implement the
actual device tree node parsing in wlcore_sdio.

I still need to figure out how to add the information about whether
the clocks are XTAL or not.  I'll send it in a separate patche set.

The DTS file changes will be sent separately, since they need to go
via different trees.

The bindings documentation patch will also be updated and sent
separately, once the XTAL issue is solved.


Changes in v3:

* Remove irq_flags from pdata and handle them in the board files.
  This caused the "wlcore: use irq_flags in pdata instead of hiding it
  behind a quirk" (now 2/8) to be changed considerably, so I removed
  the Acked-by from Tony.  I also added calls to gpio_request_one()
  for the WiLink IRQ GPIO that were missing in the board files (thanks
  Felipe);

* Added "const" to the frequency tables in patch 4/8 (thanks Felipe);

* Squashed patch 5/9 into the new 2/8;

* Added comment about the sdio_set_drvdata() call move in 7/8 (thanks
  Felipe);

* I'm still modifying the panda and 4430sdp board files that are going
  to be removed in 3.11.  Please ignore the changes I made there, I
  just wanted to make sure they still work with my current tree.  Once
  the 3.11 merge window close, I'll do the relevant merges before I
  send pull requests (thanks Tony and Nishant).

Please review.

--
Cheers,
Luca.

Luciano Coelho (8):
  wl1251: split wl251 platform data to a separate structure
  wlcore: set irq_flags in the board files instead of hiding behind a
    quirk
  wlcore: remove pwr_in_suspend from platform data
  wl12xx: use frequency instead of enumerations for pdata clocks
  wlcore: add initial device tree support to the sdio module
  wlcore: sdio: add wilink clock providers
  wlcore: sdio: get clocks from device tree
  wlcore/wl12xx: check if we got correct clock data from DT

 arch/arm/mach-davinci/board-da850-evm.c        |   11 ++-
 arch/arm/mach-omap2/board-4430sdp.c            |   23 ++++-
 arch/arm/mach-omap2/board-omap3evm.c           |   22 ++++-
 arch/arm/mach-omap2/board-omap3pandora.c       |    4 +-
 arch/arm/mach-omap2/board-omap4panda.c         |   39 +++++++--
 arch/arm/mach-omap2/board-rx51-peripherals.c   |    2 +-
 arch/arm/mach-omap2/board-zoom-peripherals.c   |   33 ++++++-
 drivers/net/wireless/ti/wilink_platform_data.c |   37 ++++++--
 drivers/net/wireless/ti/wl1251/sdio.c          |   12 +--
 drivers/net/wireless/ti/wl1251/spi.c           |    2 +-
 drivers/net/wireless/ti/wl12xx/main.c          |   77 ++++++++++++++--
 drivers/net/wireless/ti/wl12xx/wl12xx.h        |   28 ++++++
 drivers/net/wireless/ti/wlcore/debugfs.c       |    2 +-
 drivers/net/wireless/ti/wlcore/main.c          |   26 +++---
 drivers/net/wireless/ti/wlcore/sdio.c          |  112 ++++++++++++++++++++++--
 drivers/net/wireless/ti/wlcore/wlcore.h        |    5 +-
 drivers/net/wireless/ti/wlcore/wlcore_i.h      |    1 +
 include/linux/wl12xx.h                         |   52 +++++------
 18 files changed, 398 insertions(+), 90 deletions(-)

-- 
1.7.10.4

[PATCH v3 1/8] wl1251: split wl251 platform data to a separate structure

[Luciano Coelho]

Move the wl1251 part of the wl12xx platform data structure into a new
structure specifically for wl1251.  Change the platform data built-in
block and board files accordingly.

Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap2/board-omap3pandora.c       |    4 +--
 arch/arm/mach-omap2/board-rx51-peripherals.c   |    2 +-
 drivers/net/wireless/ti/wilink_platform_data.c |   37 ++++++++++++++++++++----
 drivers/net/wireless/ti/wl1251/sdio.c          |   12 ++++----
 drivers/net/wireless/ti/wl1251/spi.c           |    2 +-
 include/linux/wl12xx.h                         |   22 +++++++++++++-
 6 files changed, 62 insertions(+), 17 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 28133d5..bf06d95 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -540,7 +540,7 @@ static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
 
 static void __init pandora_wl1251_init(void)
 {
-	struct wl12xx_platform_data pandora_wl1251_pdata;
+	struct wl1251_platform_data pandora_wl1251_pdata;
 	int ret;
 
 	memset(&pandora_wl1251_pdata, 0, sizeof(pandora_wl1251_pdata));
@@ -554,7 +554,7 @@ static void __init pandora_wl1251_init(void)
 		goto fail_irq;
 
 	pandora_wl1251_pdata.use_eeprom = true;
-	ret = wl12xx_set_platform_data(&pandora_wl1251_pdata);
+	ret = wl1251_set_platform_data(&pandora_wl1251_pdata);
 	if (ret < 0)
 		goto fail_irq;
 
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index 18ca61e..733f3f2 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -80,7 +80,7 @@ enum {
 	RX51_SPI_MIPID,		/* LCD panel */
 };
 
-static struct wl12xx_platform_data wl1251_pdata;
+static struct wl1251_platform_data wl1251_pdata;
 static struct tsc2005_platform_data tsc2005_pdata;
 
 #if defined(CONFIG_SENSORS_LIS3_I2C) || defined(CONFIG_SENSORS_LIS3_I2C_MODULE)
diff --git a/drivers/net/wireless/ti/wilink_platform_data.c b/drivers/net/wireless/ti/wilink_platform_data.c
index 998e958..a92bd3e 100644
--- a/drivers/net/wireless/ti/wilink_platform_data.c
+++ b/drivers/net/wireless/ti/wilink_platform_data.c
@@ -23,17 +23,17 @@
 #include <linux/err.h>
 #include <linux/wl12xx.h>
 
-static struct wl12xx_platform_data *platform_data;
+static struct wl12xx_platform_data *wl12xx_platform_data;
 
 int __init wl12xx_set_platform_data(const struct wl12xx_platform_data *data)
 {
-	if (platform_data)
+	if (wl12xx_platform_data)
 		return -EBUSY;
 	if (!data)
 		return -EINVAL;
 
-	platform_data = kmemdup(data, sizeof(*data), GFP_KERNEL);
-	if (!platform_data)
+	wl12xx_platform_data = kmemdup(data, sizeof(*data), GFP_KERNEL);
+	if (!wl12xx_platform_data)
 		return -ENOMEM;
 
 	return 0;
@@ -41,9 +41,34 @@ int __init wl12xx_set_platform_data(const struct wl12xx_platform_data *data)
 
 struct wl12xx_platform_data *wl12xx_get_platform_data(void)
 {
-	if (!platform_data)
+	if (!wl12xx_platform_data)
 		return ERR_PTR(-ENODEV);
 
-	return platform_data;
+	return wl12xx_platform_data;
 }
 EXPORT_SYMBOL(wl12xx_get_platform_data);
+
+static struct wl1251_platform_data *wl1251_platform_data;
+
+int __init wl1251_set_platform_data(const struct wl1251_platform_data *data)
+{
+	if (wl1251_platform_data)
+		return -EBUSY;
+	if (!data)
+		return -EINVAL;
+
+	wl1251_platform_data = kmemdup(data, sizeof(*data), GFP_KERNEL);
+	if (!wl1251_platform_data)
+		return -ENOMEM;
+
+	return 0;
+}
+
+struct wl1251_platform_data *wl1251_get_platform_data(void)
+{
+	if (!wl1251_platform_data)
+		return ERR_PTR(-ENODEV);
+
+	return wl1251_platform_data;
+}
+EXPORT_SYMBOL(wl1251_get_platform_data);
diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
index e2b3d9c..b75a37a 100644
--- a/drivers/net/wireless/ti/wl1251/sdio.c
+++ b/drivers/net/wireless/ti/wl1251/sdio.c
@@ -227,7 +227,7 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 	struct wl1251 *wl;
 	struct ieee80211_hw *hw;
 	struct wl1251_sdio *wl_sdio;
-	const struct wl12xx_platform_data *wl12xx_board_data;
+	const struct wl1251_platform_data *wl1251_board_data;
 
 	hw = wl1251_alloc_hw();
 	if (IS_ERR(hw))
@@ -254,11 +254,11 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 	wl->if_priv = wl_sdio;
 	wl->if_ops = &wl1251_sdio_ops;
 
-	wl12xx_board_data = wl12xx_get_platform_data();
-	if (!IS_ERR(wl12xx_board_data)) {
-		wl->set_power = wl12xx_board_data->set_power;
-		wl->irq = wl12xx_board_data->irq;
-		wl->use_eeprom = wl12xx_board_data->use_eeprom;
+	wl1251_board_data = wl1251_get_platform_data();
+	if (!IS_ERR(wl1251_board_data)) {
+		wl->set_power = wl1251_board_data->set_power;
+		wl->irq = wl1251_board_data->irq;
+		wl->use_eeprom = wl1251_board_data->use_eeprom;
 	}
 
 	if (wl->irq) {
diff --git a/drivers/net/wireless/ti/wl1251/spi.c b/drivers/net/wireless/ti/wl1251/spi.c
index c7dc6fe..6bbbfe6 100644
--- a/drivers/net/wireless/ti/wl1251/spi.c
+++ b/drivers/net/wireless/ti/wl1251/spi.c
@@ -238,7 +238,7 @@ static const struct wl1251_if_operations wl1251_spi_ops = {
 
 static int wl1251_spi_probe(struct spi_device *spi)
 {
-	struct wl12xx_platform_data *pdata;
+	struct wl1251_platform_data *pdata;
 	struct ieee80211_hw *hw;
 	struct wl1251 *wl;
 	int ret;
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index a54fe82..b516b4f 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -48,11 +48,15 @@ enum {
 	WL12XX_TCXOCLOCK_33_6	= 7, /* 33.6 MHz */
 };
 
-struct wl12xx_platform_data {
+struct wl1251_platform_data {
 	void (*set_power)(bool enable);
 	/* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
 	int irq;
 	bool use_eeprom;
+};
+
+struct wl12xx_platform_data {
+	int irq;
 	int board_ref_clock;
 	int board_tcxo_clock;
 	unsigned long platform_quirks;
@@ -68,6 +72,10 @@ int wl12xx_set_platform_data(const struct wl12xx_platform_data *data);
 
 struct wl12xx_platform_data *wl12xx_get_platform_data(void);
 
+int wl1251_set_platform_data(const struct wl1251_platform_data *data);
+
+struct wl1251_platform_data *wl1251_get_platform_data(void);
+
 #else
 
 static inline
@@ -82,6 +90,18 @@ struct wl12xx_platform_data *wl12xx_get_platform_data(void)
 	return ERR_PTR(-ENODATA);
 }
 
+static inline
+int wl1251_set_platform_data(const struct wl1251_platform_data *data)
+{
+	return -ENOSYS;
+}
+
+static inline
+struct wl1251_platform_data *wl1251_get_platform_data(void)
+{
+	return ERR_PTR(-ENODATA);
+}
+
 #endif
 
 #endif
-- 
1.7.10.4

[PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Luciano Coelho]

The platform_quirk element in the platform data was used to change the
way the IRQ is triggered.  When set, the EDGE_IRQ quirk would change
the irqflags used and treat edge trigger differently from the rest.

Instead of hiding this irq flag setting behind the quirk, have the
board files set the flags during initialization.  This will be more
meaningful than driver-specific quirks when we switch to DT.

Additionally, fix missing gpio_request() calls in the boarding files
(so that setting the flags actually works).

Cc: Tony Lindgren <tony@atomide.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 arch/arm/mach-davinci/board-da850-evm.c      |    8 +++++-
 arch/arm/mach-omap2/board-4430sdp.c          |   18 +++++++++++++
 arch/arm/mach-omap2/board-omap3evm.c         |   19 ++++++++++++++
 arch/arm/mach-omap2/board-omap4panda.c       |   36 +++++++++++++++++++++-----
 arch/arm/mach-omap2/board-zoom-peripherals.c |   30 ++++++++++++++++++---
 drivers/net/wireless/ti/wlcore/debugfs.c     |    2 +-
 drivers/net/wireless/ti/wlcore/main.c        |   24 ++++++++++-------
 drivers/net/wireless/ti/wlcore/wlcore.h      |    5 ++--
 include/linux/wl12xx.h                       |    4 ---
 9 files changed, 118 insertions(+), 28 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 8a24b6c..544b6fa 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1378,7 +1378,6 @@ static const short da850_wl12xx_pins[] __initconst = {
 static struct wl12xx_platform_data da850_wl12xx_wlan_data __initdata = {
 	.irq			= -1,
 	.board_ref_clock	= WL12XX_REFCLOCK_38,
-	.platform_quirks	= WL12XX_PLATFORM_QUIRK_EDGE_IRQ,
 };
 
 static __init int da850_wl12xx_init(void)
@@ -1409,6 +1408,13 @@ static __init int da850_wl12xx_init(void)
 		goto free_wlan_en;
 	}
 
+	ret = irq_set_irq_type(gpio_to_irq(DA850_WLAN_IRQ),
+			       IRQ_TYPE_EDGE_RISING);
+	if (ret) {
+		pr_err("Could not set wl12xx irq type: %d\n", ret);
+		goto free;
+	}
+
 	da850_wl12xx_wlan_data.irq = gpio_to_irq(DA850_WLAN_IRQ);
 
 	ret = wl12xx_set_platform_data(&da850_wl12xx_wlan_data);
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 56a9a4f..953f620 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -703,12 +703,30 @@ static void __init omap4_sdp4430_wifi_init(void)
 
 	omap4_sdp4430_wifi_mux_init();
 	omap4_sdp4430_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
+
+	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
+	if (ret) {
+		pr_err("error requesting wl12xx gpio: %d\n", ret);
+		goto out;
+	}
+
+	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
+	if (ret) {
+		pr_err("error setting wl12xx irq type: %d\n", ret);
+		goto free;
+	}
+
 	ret = wl12xx_set_platform_data(&omap4_sdp4430_wlan_data);
 	if (ret)
 		pr_err("Error setting wl12xx data: %d\n", ret);
+
 	ret = platform_device_register(&omap_vwlan_device);
 	if (ret)
 		pr_err("Error registering wl12xx device: %d\n", ret);
+out:
+	return;
+free:
+	gpio_free(GPIO_WIFI_IRQ);
 }
 
 static void __init omap_4430sdp_init(void)
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index f76d0de..8abce3cd 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -612,12 +612,31 @@ static void __init omap3_evm_wl12xx_init(void)
 
 	/* WL12xx WLAN Init */
 	omap3evm_wlan_data.irq = gpio_to_irq(OMAP3EVM_WLAN_IRQ_GPIO);
+
+	ret = gpio_request_one(OMAP3EVM_WLAN_IRQ_GPIO, GPIOF_IN,
+			       "OMAP3EVM_WLAN_IRQ_GPIO");
+	if (ret) {
+		pr_err("error requesting wl12xx gpio: %d\n", ret);
+		goto out;
+	}
+
+	ret = irq_set_irq_type(gpio_to_irq(OMAP3EVM_WLAN_IRQ_GPIO),
+			       IRQ_TYPE_LEVEL_HIGH);
+	if (ret) {
+		pr_err("error setting wl12xx irq type: %d\n", ret);
+		goto free;
+	}
+
 	ret = wl12xx_set_platform_data(&omap3evm_wlan_data);
 	if (ret)
 		pr_err("error setting wl12xx data: %d\n", ret);
 	ret = platform_device_register(&omap3evm_wlan_regulator);
 	if (ret)
 		pr_err("error registering wl12xx device: %d\n", ret);
+out:
+	return;
+free:
+	gpio_free(OMAP3EVM_WLAN_IRQ_GPIO);
 #endif
 }
 
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 1e2c75e..5b33626 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -413,20 +413,44 @@ static void omap4_panda_init_rev(void)
 	}
 }
 
+static void __init omap4_panda_wilink_init(void)
+{
+	int ret;
+
+	omap_panda_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
+
+	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
+	if (ret) {
+		pr_err("error requesting wl12xx gpio: %d\n", ret);
+		goto out;
+	}
+
+	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
+	if (ret) {
+		pr_err("error setting wl12xx irq type: %d\n", ret);
+		goto free;
+	}
+
+	ret = wl12xx_set_platform_data(&omap_panda_wlan_data);
+	if (ret) {
+		pr_err("error setting wl12xx data: %d\n", ret);
+		goto free;
+	}
+out:
+	return;
+free:
+	gpio_free(GPIO_WIFI_IRQ);
+}
+
 static void __init omap4_panda_init(void)
 {
 	int package = OMAP_PACKAGE_CBS;
-	int ret;
 
 	if (omap_rev() == OMAP4430_REV_ES1_0)
 		package = OMAP_PACKAGE_CBL;
 	omap4_mux_init(board_mux, NULL, package);
 
-	omap_panda_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
-	ret = wl12xx_set_platform_data(&omap_panda_wlan_data);
-	if (ret)
-		pr_err("error setting wl12xx data: %d\n", ret);
-
+	omap4_panda_wilink_init();
 	omap4_panda_init_rev();
 	omap4_panda_i2c_init();
 	platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices));
diff --git a/arch/arm/mach-omap2/board-zoom-peripherals.c b/arch/arm/mach-omap2/board-zoom-peripherals.c
index a90375d..4f84cf9 100644
--- a/arch/arm/mach-omap2/board-zoom-peripherals.c
+++ b/arch/arm/mach-omap2/board-zoom-peripherals.c
@@ -339,16 +339,40 @@ static void enable_board_wakeup_source(void)
 		OMAP_WAKEUP_EN | OMAP_PIN_INPUT_PULLUP);
 }
 
-void __init zoom_peripherals_init(void)
+static void __init zoom_wilink_init(void)
 {
 	int ret;
 
 	omap_zoom_wlan_data.irq = gpio_to_irq(OMAP_ZOOM_WLAN_IRQ_GPIO);
-	ret = wl12xx_set_platform_data(&omap_zoom_wlan_data);
 
-	if (ret)
+	ret = gpio_request_one(OMAP_ZOOM_WLAN_IRQ_GPIO, GPIOF_IN,
+			       "OMAP_ZOOM_WLAN_IRQ_GPIO");
+	if (ret) {
+		pr_err("error requesting wl12xx gpio: %d\n", ret);
+		goto out;
+	}
+
+	ret = irq_set_irq_type(gpio_to_irq(OMAP_ZOOM_WLAN_IRQ_GPIO),
+			       IRQ_TYPE_LEVEL_HIGH);
+	if (ret) {
+		pr_err("error setting wl12xx irq type: %d\n", ret);
+		goto free;
+	}
+
+	ret = wl12xx_set_platform_data(&omap_zoom_wlan_data);
+	if (ret) {
 		pr_err("error setting wl12xx data: %d\n", ret);
+		goto free;
+	}
+out:
+	return;
+free:
+	gpio_free(OMAP_ZOOM_WLAN_IRQ_GPIO);
+}
 
+void __init zoom_peripherals_init(void)
+{
+	zoom_wilink_init();
 	omap_hsmmc_init(mmc);
 	omap_i2c_init();
 	pwm_add_table(zoom_pwm_lookup, ARRAY_SIZE(zoom_pwm_lookup));
diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index c3e1f79..5eff663 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -486,7 +486,7 @@ static ssize_t driver_state_read(struct file *file, char __user *user_buf,
 	DRIVER_STATE_PRINT_HEX(irq);
 	/* TODO: ref_clock and tcxo_clock were moved to wl12xx priv */
 	DRIVER_STATE_PRINT_HEX(hw_pg_ver);
-	DRIVER_STATE_PRINT_HEX(platform_quirks);
+	DRIVER_STATE_PRINT_HEX(irq_flags);
 	DRIVER_STATE_PRINT_HEX(chip.id);
 	DRIVER_STATE_PRINT_STR(chip.fw_ver_str);
 	DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str);
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index b8db55c..7b5d0cc 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -27,6 +27,7 @@
 #include <linux/vmalloc.h>
 #include <linux/wl12xx.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include "wlcore.h"
 #include "debug.h"
@@ -516,7 +517,7 @@ static int wlcore_irq_locked(struct wl1271 *wl)
 	 * In case edge triggered interrupt must be used, we cannot iterate
 	 * more than once without introducing race conditions with the hardirq.
 	 */
-	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+	if (wl->irq_flags & IRQF_TRIGGER_RISING)
 		loopcount = 1;
 
 	wl1271_debug(DEBUG_IRQ, "IRQ work");
@@ -5765,7 +5766,6 @@ struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size, u32 aggr_buf_size,
 	wl->ap_ps_map = 0;
 	wl->ap_fw_ps_map = 0;
 	wl->quirks = 0;
-	wl->platform_quirks = 0;
 	wl->system_hlid = WL12XX_SYSTEM_HLID;
 	wl->active_sta_count = 0;
 	wl->active_link_count = 0;
@@ -5900,8 +5900,7 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 	struct wl1271 *wl = context;
 	struct platform_device *pdev = wl->pdev;
 	struct wlcore_platdev_data *pdev_data = pdev->dev.platform_data;
-	struct wl12xx_platform_data *pdata = pdev_data->pdata;
-	unsigned long irqflags;
+	struct irq_data *irq_data;
 	int ret;
 
 	if (fw) {
@@ -5928,16 +5927,21 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 	wlcore_adjust_conf(wl);
 
 	wl->irq = platform_get_irq(pdev, 0);
-	wl->platform_quirks = pdata->platform_quirks;
 	wl->if_ops = pdev_data->if_ops;
 
-	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
-		irqflags = IRQF_TRIGGER_RISING;
-	else
-		irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
+	irq_data = irq_get_irq_data(wl->irq);
+	if (!irq_data) {
+		wl1271_error("couldn't get irq data for irq %d\n", wl->irq);
+		ret = -EINVAL;
+		goto out_free_nvs;
+	}
+
+	wl->irq_flags = irqd_get_trigger_type(irq_data);
+	/* Since we don't use the primary handler, we must set ONESHOT */
+	wl->irq_flags |= IRQF_ONESHOT;
 
 	ret = request_threaded_irq(wl->irq, NULL, wlcore_irq,
-				   irqflags, pdev->name, wl);
+				   wl->irq_flags, pdev->name, wl);
 	if (ret < 0) {
 		wl1271_error("request_irq() failed: %d", ret);
 		goto out_free_nvs;
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
index 0034979..8306bde 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -185,6 +185,8 @@ struct wl1271 {
 
 	int irq;
 
+	int irq_flags;
+
 	spinlock_t wl_lock;
 
 	enum wlcore_state state;
@@ -384,9 +386,6 @@ struct wl1271 {
 	/* Quirks of specific hardware revisions */
 	unsigned int quirks;
 
-	/* Platform limitations */
-	unsigned int platform_quirks;
-
 	/* number of currently active RX BA sessions */
 	int ba_rx_session_count;
 
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index b516b4f..1bfcd19 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -59,13 +59,9 @@ struct wl12xx_platform_data {
 	int irq;
 	int board_ref_clock;
 	int board_tcxo_clock;
-	unsigned long platform_quirks;
 	bool pwr_in_suspend;
 };
 
-/* Platform does not support level trigger interrupts */
-#define WL12XX_PLATFORM_QUIRK_EDGE_IRQ	BIT(0)
-
 #ifdef CONFIG_WILINK_PLATFORM_DATA
 
 int wl12xx_set_platform_data(const struct wl12xx_platform_data *data);
-- 
1.7.10.4

[PATCH v3 3/8] wlcore: remove pwr_in_suspend from platform data

[Luciano Coelho]

The pwr_in_suspend flag depends on the MMC settings which can be
retrieved from the SDIO subsystem, so it doesn't need to be part of
the platform data structure.  Move it to the platform device data that
is passed from SDIO to wlcore.

Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c     |    2 +-
 drivers/net/wireless/ti/wlcore/sdio.c     |    2 +-
 drivers/net/wireless/ti/wlcore/wlcore_i.h |    1 +
 include/linux/wl12xx.h                    |    1 -
 4 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 7b5d0cc..aada037 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -5952,7 +5952,7 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 	if (!ret) {
 		wl->irq_wake_enabled = true;
 		device_init_wakeup(wl->dev, 1);
-		if (pdata->pwr_in_suspend)
+		if (pdev_data->pwr_in_suspend)
 			wl->hw->wiphy->wowlan = &wlcore_wowlan_support;
 	}
 #endif
diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 29ef249..4c7e8ac 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -260,7 +260,7 @@ static int wl1271_probe(struct sdio_func *func,
 	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
 
 	if (mmcflags & MMC_PM_KEEP_POWER)
-		pdev_data->pdata->pwr_in_suspend = true;
+		pdev_data->pwr_in_suspend = true;
 
 	sdio_set_drvdata(func, glue);
 
diff --git a/drivers/net/wireless/ti/wlcore/wlcore_i.h b/drivers/net/wireless/ti/wlcore/wlcore_i.h
index e5e1464..f2c4227 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore_i.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore_i.h
@@ -209,6 +209,7 @@ struct wl1271_if_operations {
 struct wlcore_platdev_data {
 	struct wl12xx_platform_data *pdata;
 	struct wl1271_if_operations *if_ops;
+	bool pwr_in_suspend;
 };
 
 #define MAX_NUM_KEYS 14
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index 1bfcd19..ab90b1c 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -59,7 +59,6 @@ struct wl12xx_platform_data {
 	int irq;
 	int board_ref_clock;
 	int board_tcxo_clock;
-	bool pwr_in_suspend;
 };
 
 #ifdef CONFIG_WILINK_PLATFORM_DATA
-- 
1.7.10.4

[PATCH v3 4/8] wl12xx: use frequency instead of enumerations for pdata clocks

[Luciano Coelho]

Instead of defining an enumeration with the FW specific values for the
different clock rates, use the actual frequency instead.  Also add a
boolean to specify whether the clock is XTAL or not.

Change all board files to reflect this.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 arch/arm/mach-davinci/board-da850-evm.c      |    3 +-
 arch/arm/mach-omap2/board-4430sdp.c          |    5 ++-
 arch/arm/mach-omap2/board-omap3evm.c         |    3 +-
 arch/arm/mach-omap2/board-omap4panda.c       |    3 +-
 arch/arm/mach-omap2/board-zoom-peripherals.c |    3 +-
 drivers/net/wireless/ti/wl12xx/main.c        |   57 +++++++++++++++++++++++++-
 drivers/net/wireless/ti/wl12xx/wl12xx.h      |   28 +++++++++++++
 include/linux/wl12xx.h                       |   27 ++----------
 8 files changed, 97 insertions(+), 32 deletions(-)

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 544b6fa..eddced8 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1377,7 +1377,8 @@ static const short da850_wl12xx_pins[] __initconst = {
 
 static struct wl12xx_platform_data da850_wl12xx_wlan_data __initdata = {
 	.irq			= -1,
-	.board_ref_clock	= WL12XX_REFCLOCK_38,
+	.ref_clock_freq		= 38400000,
+	.ref_clock_xtal		= false,
 };
 
 static __init int da850_wl12xx_init(void)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 953f620..0d3cb10 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -693,8 +693,9 @@ static void __init omap4_sdp4430_wifi_mux_init(void)
 }
 
 static struct wl12xx_platform_data omap4_sdp4430_wlan_data __initdata = {
-	.board_ref_clock = WL12XX_REFCLOCK_26,
-	.board_tcxo_clock = WL12XX_TCXOCLOCK_26,
+	.ref_clock_freq = 26000000,
+	.ref_clock_xtal = false,
+	.tcxo_clock_freq = 26000000,
 };
 
 static void __init omap4_sdp4430_wifi_init(void)
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 8abce3cd..8f953ed 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -458,7 +458,8 @@ static struct platform_device omap3evm_wlan_regulator = {
 };
 
 struct wl12xx_platform_data omap3evm_wlan_data __initdata = {
-	.board_ref_clock = WL12XX_REFCLOCK_38, /* 38.4 MHz */
+	.ref_clock_freq = 38400000,
+	.ref_clock_xtal = false,
 };
 #endif
 
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 5b33626..b90fd4c 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -230,7 +230,8 @@ static struct platform_device omap_vwlan_device = {
 };
 
 static struct wl12xx_platform_data omap_panda_wlan_data  __initdata = {
-	.board_ref_clock = WL12XX_REFCLOCK_38, /* 38.4 MHz */
+	.ref_clock_freq = 38400000,
+	.ref_clock_xtal = false,
 };
 
 static struct twl6040_codec_data twl6040_codec = {
diff --git a/arch/arm/mach-omap2/board-zoom-peripherals.c b/arch/arm/mach-omap2/board-zoom-peripherals.c
index 4f84cf9..83a9a36 100644
--- a/arch/arm/mach-omap2/board-zoom-peripherals.c
+++ b/arch/arm/mach-omap2/board-zoom-peripherals.c
@@ -244,7 +244,8 @@ static struct platform_device *zoom_devices[] __initdata = {
 };
 
 static struct wl12xx_platform_data omap_zoom_wlan_data __initdata = {
-	.board_ref_clock = WL12XX_REFCLOCK_26, /* 26 MHz */
+	.ref_clock_freq = 26000000,
+	.ref_clock_xtal = false,
 };
 
 static struct omap2_hsmmc_info mmc[] = {
diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 1c627da..216c2fd 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -1701,6 +1701,42 @@ static struct ieee80211_sta_ht_cap wl12xx_ht_cap = {
 		},
 };
 
+static const struct wl12xx_clock wl12xx_refclock_table[] = {
+	{ 19200000,	false,	WL12XX_REFCLOCK_19	},
+	{ 26000000,	false,	WL12XX_REFCLOCK_26	},
+	{ 26000000,	true,	WL12XX_REFCLOCK_26_XTAL	},
+	{ 38400000,	false,	WL12XX_REFCLOCK_38	},
+	{ 38400000,	true,	WL12XX_REFCLOCK_38_XTAL	},
+	{ 52000000,	false,	WL12XX_REFCLOCK_52	},
+	{ 0,		false,	0 }
+};
+
+static const struct wl12xx_clock wl12xx_tcxoclock_table[] = {
+	{ 16368000,	true,	WL12XX_TCXOCLOCK_16_368	},
+	{ 16800000,	true,	WL12XX_TCXOCLOCK_16_8	},
+	{ 19200000,	true,	WL12XX_TCXOCLOCK_19_2	},
+	{ 26000000,	true,	WL12XX_TCXOCLOCK_26	},
+	{ 32736000,	true,	WL12XX_TCXOCLOCK_32_736	},
+	{ 33600000,	true,	WL12XX_TCXOCLOCK_33_6	},
+	{ 38400000,	true,	WL12XX_TCXOCLOCK_38_4	},
+	{ 52000000,	true,	WL12XX_TCXOCLOCK_52	},
+	{ 0,		false,	0 }
+};
+
+static int wl12xx_get_clock_idx(struct wl12xx_clock *table, u32 freq, bool xtal)
+{
+	int i = 0;
+
+	while(table[i].freq != 0) {
+		if ((table[i].freq == freq) &&
+		    (table[i].xtal == xtal))
+			return table[i].hw_idx;
+		i++;
+	};
+
+	return -EINVAL;
+}
+
 static int wl12xx_setup(struct wl1271 *wl)
 {
 	struct wl12xx_priv *priv = wl->priv;
@@ -1722,7 +1758,16 @@ static int wl12xx_setup(struct wl1271 *wl)
 	wl12xx_conf_init(wl);
 
 	if (!fref_param) {
-		priv->ref_clock = pdata->board_ref_clock;
+		priv->ref_clock = wl12xx_get_clock_idx(wl12xx_refclock_table,
+						       pdata->ref_clock_freq,
+						       pdata->ref_clock_xtal);
+		if (priv->ref_clock < 0) {
+			wl1271_error("Invalid ref_clock frequency (%d Hz, %s)",
+				pdata->ref_clock_freq,
+				pdata->ref_clock_xtal ? "XTAL" : "not XTAL");
+
+			return priv->ref_clock;
+		}
 	} else {
 		if (!strcmp(fref_param, "19.2"))
 			priv->ref_clock = WL12XX_REFCLOCK_19;
@@ -1741,7 +1786,15 @@ static int wl12xx_setup(struct wl1271 *wl)
 	}
 
 	if (!tcxo_param) {
-		priv->tcxo_clock = pdata->board_tcxo_clock;
+		priv->tcxo_clock = wl12xx_get_clock_idx(wl12xx_tcxoclock_table,
+							pdata->tcxo_clock_freq,
+							true);
+		if (priv->tcxo_clock < 0) {
+			wl1271_error("Invalid tcxo_clock frequency (%d Hz)",
+				pdata->tcxo_clock_freq);
+
+			return priv->tcxo_clock;
+		}
 	} else {
 		if (!strcmp(tcxo_param, "19.2"))
 			priv->tcxo_clock = WL12XX_TCXOCLOCK_19_2;
diff --git a/drivers/net/wireless/ti/wl12xx/wl12xx.h b/drivers/net/wireless/ti/wl12xx/wl12xx.h
index 9e5484a..05f631b 100644
--- a/drivers/net/wireless/ti/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h
@@ -79,4 +79,32 @@ struct wl12xx_priv {
 	struct wl127x_rx_mem_pool_addr *rx_mem_addr;
 };
 
+/* Reference clock values */
+enum {
+	WL12XX_REFCLOCK_19	= 0, /* 19.2 MHz */
+	WL12XX_REFCLOCK_26	= 1, /* 26 MHz */
+	WL12XX_REFCLOCK_38	= 2, /* 38.4 MHz */
+	WL12XX_REFCLOCK_52	= 3, /* 52 MHz */
+	WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
+	WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
+};
+
+/* TCXO clock values */
+enum {
+	WL12XX_TCXOCLOCK_19_2	= 0, /* 19.2MHz */
+	WL12XX_TCXOCLOCK_26	= 1, /* 26 MHz */
+	WL12XX_TCXOCLOCK_38_4	= 2, /* 38.4MHz */
+	WL12XX_TCXOCLOCK_52	= 3, /* 52 MHz */
+	WL12XX_TCXOCLOCK_16_368	= 4, /* 16.368 MHz */
+	WL12XX_TCXOCLOCK_32_736	= 5, /* 32.736 MHz */
+	WL12XX_TCXOCLOCK_16_8	= 6, /* 16.8 MHz */
+	WL12XX_TCXOCLOCK_33_6	= 7, /* 33.6 MHz */
+};
+
+struct wl12xx_clock {
+	u32	freq;
+	bool	xtal;
+	u8	hw_idx;
+};
+
 #endif /* __WL12XX_PRIV_H__ */
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index ab90b1c..11491ad 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -26,28 +26,6 @@
 
 #include <linux/err.h>
 
-/* Reference clock values */
-enum {
-	WL12XX_REFCLOCK_19	= 0, /* 19.2 MHz */
-	WL12XX_REFCLOCK_26	= 1, /* 26 MHz */
-	WL12XX_REFCLOCK_38	= 2, /* 38.4 MHz */
-	WL12XX_REFCLOCK_52	= 3, /* 52 MHz */
-	WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
-	WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
-};
-
-/* TCXO clock values */
-enum {
-	WL12XX_TCXOCLOCK_19_2	= 0, /* 19.2MHz */
-	WL12XX_TCXOCLOCK_26	= 1, /* 26 MHz */
-	WL12XX_TCXOCLOCK_38_4	= 2, /* 38.4MHz */
-	WL12XX_TCXOCLOCK_52	= 3, /* 52 MHz */
-	WL12XX_TCXOCLOCK_16_368	= 4, /* 16.368 MHz */
-	WL12XX_TCXOCLOCK_32_736	= 5, /* 32.736 MHz */
-	WL12XX_TCXOCLOCK_16_8	= 6, /* 16.8 MHz */
-	WL12XX_TCXOCLOCK_33_6	= 7, /* 33.6 MHz */
-};
-
 struct wl1251_platform_data {
 	void (*set_power)(bool enable);
 	/* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
@@ -57,8 +35,9 @@ struct wl1251_platform_data {
 
 struct wl12xx_platform_data {
 	int irq;
-	int board_ref_clock;
-	int board_tcxo_clock;
+	int ref_clock_freq;	/* in Hertz */
+	bool ref_clock_xtal;	/* specify whether the clock is XTAL or not */
+	int tcxo_clock_freq;	/* in Hertz, tcxo is always XTAL */
 };
 
 #ifdef CONFIG_WILINK_PLATFORM_DATA
-- 
1.7.10.4

[PATCH v3 5/8] wlcore: add initial device tree support to the sdio module

[Luciano Coelho]

If platform data is not available, try to get the required information
from the device tree.  Register an OF match table and parse the
appropriate device tree nodes.

Parse interrupt property only, for now.

Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/sdio.c |   69 ++++++++++++++++++++++++++++++---
 1 file changed, 63 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 4c7e8ac..9370d7e 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -30,7 +30,7 @@
 #include <linux/mmc/sdio_ids.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
-#include <linux/gpio.h>
+#include <linux/of_irq.h>
 #include <linux/wl12xx.h>
 #include <linux/pm_runtime.h>
 #include <linux/printk.h>
@@ -214,6 +214,43 @@ static struct wl1271_if_operations sdio_ops = {
 	.set_block_size = wl1271_sdio_set_block_size,
 };
 
+static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
+{
+	struct wl12xx_platform_data *pdata;
+	struct device_node *np = dev->of_node;
+
+	if (!np) {
+		np = of_find_matching_node(NULL, dev->driver->of_match_table);
+		if (!np) {
+			dev_notice(dev, "device tree node not available\n");
+			pdata = ERR_PTR(-ENODEV);
+			goto out;
+		}
+	}
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		dev_err(dev, "can't allocate platform data\n");
+		pdata = ERR_PTR(-ENODEV);
+		goto out;
+	}
+
+	pdata->irq = irq_of_parse_and_map(np, 0);
+	if (pdata->irq < 0) {
+		dev_err(dev, "can't get interrupt gpio from the device tree\n");
+		goto out_free;
+	}
+
+	goto out;
+
+out_free:
+	kfree(pdata);
+	pdata = ERR_PTR(-ENODEV);
+
+out:
+	return pdata;
+}
+
 static int wl1271_probe(struct sdio_func *func,
 				  const struct sdio_device_id *id)
 {
@@ -248,11 +285,22 @@ static int wl1271_probe(struct sdio_func *func,
 	/* Use block mode for transferring over one block size of data */
 	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 
+	/* The pdata allocated here is freed when the device is freed,
+	 * so we don't need an additional out label to free it in case
+	 * of error further on.
+	 */
+
+	/* Try to get legacy platform data from the board file */
 	pdev_data->pdata = wl12xx_get_platform_data();
 	if (IS_ERR(pdev_data->pdata)) {
-		ret = PTR_ERR(pdev_data->pdata);
-		dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
-		goto out_free_glue;
+		dev_info(&func->dev,
+			 "legacy platform data not found, trying device tree\n");
+
+		pdev_data->pdata = wlcore_get_pdata_from_of(&func->dev);
+		if (IS_ERR(pdev_data->pdata)) {
+			dev_err(&func->dev, "can't get platform data\n");
+			goto out_free_glue;
+		}
 	}
 
 	/* if sdio can keep power while host is suspended, enable wow */
@@ -386,16 +434,25 @@ static const struct dev_pm_ops wl1271_sdio_pm_ops = {
 };
 #endif
 
+static const struct of_device_id wlcore_sdio_of_match_table[] = {
+	{ .compatible = "ti,wilink6" },
+	{ .compatible = "ti,wilink7" },
+	{ .compatible = "ti,wilink8" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, wlcore_sdio_of_match_table);
+
 static struct sdio_driver wl1271_sdio_driver = {
 	.name		= "wl1271_sdio",
 	.id_table	= wl1271_devices,
 	.probe		= wl1271_probe,
 	.remove		= wl1271_remove,
-#ifdef CONFIG_PM
 	.drv = {
+#ifdef CONFIG_PM
 		.pm = &wl1271_sdio_pm_ops,
-	},
 #endif
+		.of_match_table = of_match_ptr(wlcore_sdio_of_match_table),
+	},
 };
 
 static int __init wl1271_init(void)
-- 
1.7.10.4

[PATCH v3 6/8] wlcore: sdio: add wilink clock providers

[Luciano Coelho]

Add refclock and tcxoclock as clock providers in WiLink.  These clocks
are not accesible outside the WiLink module, but they are registered
in the clock framework anyway.  Only the WiLink chip consumes these
clocks.

In theory, the WiLink chip could be connected to external clocks
instead of using these internal clocks, so make the clock consumer
code generic enough.  If external clocks are used, then the internal
clock device tree nodes are not necessary, but the external ones must
be specified.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
---
 drivers/net/wireless/ti/wlcore/sdio.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 9370d7e..980bf3d 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -34,6 +34,7 @@
 #include <linux/wl12xx.h>
 #include <linux/pm_runtime.h>
 #include <linux/printk.h>
+#include <linux/clk-provider.h>
 
 #include "wlcore.h"
 #include "wl12xx_80211.h"
@@ -214,10 +215,15 @@ static struct wl1271_if_operations sdio_ops = {
 	.set_block_size = wl1271_sdio_set_block_size,
 };
 
+static const struct of_device_id wlcore_sdio_of_clk_match_table[] = {
+	{ .compatible = "ti,wilink-clock" },
+};
+
 static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
 {
 	struct wl12xx_platform_data *pdata;
 	struct device_node *np = dev->of_node;
+	struct device_node *clock_node;
 
 	if (!np) {
 		np = of_find_matching_node(NULL, dev->driver->of_match_table);
@@ -241,6 +247,9 @@ static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
 		goto out_free;
 	}
 
+	for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table)
+		of_fixed_clk_setup(clock_node);
+
 	goto out;
 
 out_free:
-- 
1.7.10.4

[PATCH v3 7/8] wlcore: sdio: get clocks from device tree

[Luciano Coelho]

Read the clock nodes from the device tree and use them to set the
frequency for the refclock and the tcxo clock.

Also, call sdio_set_drvdata() earlier, so the glue is already set in
the driver data when we call wlcore_get_pdata_from_of() and we don't
need to pass it as a parameter.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
---
 drivers/net/wireless/ti/wlcore/sdio.c |   36 +++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 980bf3d..60fce49 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -53,6 +53,7 @@ static bool dump = false;
 struct wl12xx_sdio_glue {
 	struct device *dev;
 	struct platform_device *core;
+	struct clk *refclock, *tcxoclock;
 };
 
 static const struct sdio_device_id wl1271_devices[] = {
@@ -224,6 +225,7 @@ static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
 	struct wl12xx_platform_data *pdata;
 	struct device_node *np = dev->of_node;
 	struct device_node *clock_node;
+	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(dev_to_sdio_func(dev));
 
 	if (!np) {
 		np = of_find_matching_node(NULL, dev->driver->of_match_table);
@@ -250,6 +252,26 @@ static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
 	for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table)
 		of_fixed_clk_setup(clock_node);
 
+	/* TODO: make sure we have this when needed (ie. for WL6 and WL7) */
+	glue->refclock = of_clk_get_by_name(np, "refclock");
+	if (IS_ERR(glue->refclock)) {
+		dev_err(dev, "couldn't find refclock on the device tree\n");
+		glue->refclock = NULL;
+	} else {
+		clk_prepare_enable(glue->refclock);
+		pdata->ref_clock_freq = clk_get_rate(glue->refclock);
+	}
+
+	/* TODO: make sure we have this when needed (ie. for WL7) */
+	glue->tcxoclock = of_clk_get_by_name(np, "tcxoclock");
+	if (IS_ERR(glue->tcxoclock)) {
+		dev_err(dev, "couldn't find tcxoclock on the device tree\n");
+		glue->tcxoclock = NULL;
+	} else {
+		clk_prepare_enable(glue->tcxoclock);
+		pdata->ref_clock_freq = clk_get_rate(glue->tcxoclock);
+	}
+
 	goto out;
 
 out_free:
@@ -294,6 +316,8 @@ static int wl1271_probe(struct sdio_func *func,
 	/* Use block mode for transferring over one block size of data */
 	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 
+	sdio_set_drvdata(func, glue);
+
 	/* The pdata allocated here is freed when the device is freed,
 	 * so we don't need an additional out label to free it in case
 	 * of error further on.
@@ -319,8 +343,6 @@ static int wl1271_probe(struct sdio_func *func,
 	if (mmcflags & MMC_PM_KEEP_POWER)
 		pdev_data->pwr_in_suspend = true;
 
-	sdio_set_drvdata(func, glue);
-
 	/* Tell PM core that we don't need the card to be powered now */
 	pm_runtime_put_noidle(&func->dev);
 
@@ -387,6 +409,16 @@ static void wl1271_remove(struct sdio_func *func)
 {
 	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
 
+	if (glue->refclock) {
+		clk_disable_unprepare(glue->refclock);
+		clk_put(glue->refclock);
+	}
+
+	if (glue->tcxoclock) {
+		clk_disable_unprepare(glue->tcxoclock);
+		clk_put(glue->tcxoclock);
+	}
+
 	/* Undo decrement done above in wl1271_probe */
 	pm_runtime_get_noresume(&func->dev);
 
-- 
1.7.10.4

[PATCH v3 8/8] wlcore/wl12xx: check if we got correct clock data from DT

[Luciano Coelho]

The fref and the tcxo clocks settings are optional in some platforms.
WiLink8 doesn't need either, so we don't check the values.  WiLink 6
only needs the fref clock, so we check that it is valid or return with
an error.  WiLink7 needs both clocks, if either is not available we
return with an error.

Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wl12xx/main.c |   20 +++++++++++++++++---
 drivers/net/wireless/ti/wlcore/sdio.c |    4 ----
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 216c2fd..1be0b51 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -927,6 +927,11 @@ static int wl128x_boot_clk(struct wl1271 *wl, int *selected_clock)
 	u16 sys_clk_cfg;
 	int ret;
 
+	if ((priv->ref_clock < 0) || (priv->tcxo_clock < 0)) {
+		wl1271_error("Missing fref and/or tcxo clock settings\n");
+		return -EINVAL;
+	}
+
 	/* For XTAL-only modes, FREF will be used after switching from TCXO */
 	if (priv->ref_clock == WL12XX_REFCLOCK_26_XTAL ||
 	    priv->ref_clock == WL12XX_REFCLOCK_38_XTAL) {
@@ -976,6 +981,11 @@ static int wl127x_boot_clk(struct wl1271 *wl)
 	u32 clk;
 	int ret;
 
+	if (priv->ref_clock < 0) {
+		wl1271_error("Missing fref clock settings\n");
+		return -EINVAL;
+	}
+
 	if (WL127X_PG_GET_MAJOR(wl->hw_pg_ver) < 3)
 		wl->quirks |= WLCORE_QUIRK_END_OF_TRANSACTION;
 
@@ -1757,7 +1767,7 @@ static int wl12xx_setup(struct wl1271 *wl)
 	wlcore_set_ht_cap(wl, IEEE80211_BAND_5GHZ, &wl12xx_ht_cap);
 	wl12xx_conf_init(wl);
 
-	if (!fref_param) {
+	if (!fref_param && (pdata->ref_clock_freq > 0)) {
 		priv->ref_clock = wl12xx_get_clock_idx(wl12xx_refclock_table,
 						       pdata->ref_clock_freq,
 						       pdata->ref_clock_xtal);
@@ -1768,6 +1778,8 @@ static int wl12xx_setup(struct wl1271 *wl)
 
 			return priv->ref_clock;
 		}
+	} else if (!fref_param) {
+		priv->ref_clock = -EINVAL;
 	} else {
 		if (!strcmp(fref_param, "19.2"))
 			priv->ref_clock = WL12XX_REFCLOCK_19;
@@ -1785,7 +1797,7 @@ static int wl12xx_setup(struct wl1271 *wl)
 			wl1271_error("Invalid fref parameter %s", fref_param);
 	}
 
-	if (!tcxo_param) {
+	if (!fref_param && (pdata->tcxo_clock_freq > 0)) {
 		priv->tcxo_clock = wl12xx_get_clock_idx(wl12xx_tcxoclock_table,
 							pdata->tcxo_clock_freq,
 							true);
@@ -1795,7 +1807,9 @@ static int wl12xx_setup(struct wl1271 *wl)
 
 			return priv->tcxo_clock;
 		}
-	} else {
+	} else if (!fref_param) {
+		priv->tcxo_clock = -EINVAL;
+	}else {
 		if (!strcmp(tcxo_param, "19.2"))
 			priv->tcxo_clock = WL12XX_TCXOCLOCK_19_2;
 		else if (!strcmp(tcxo_param, "26"))
diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 60fce49..c76eb66 100644
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -252,20 +252,16 @@ static struct wl12xx_platform_data *wlcore_get_pdata_from_of(struct device *dev)
 	for_each_matching_node(clock_node, wlcore_sdio_of_clk_match_table)
 		of_fixed_clk_setup(clock_node);
 
-	/* TODO: make sure we have this when needed (ie. for WL6 and WL7) */
 	glue->refclock = of_clk_get_by_name(np, "refclock");
 	if (IS_ERR(glue->refclock)) {
-		dev_err(dev, "couldn't find refclock on the device tree\n");
 		glue->refclock = NULL;
 	} else {
 		clk_prepare_enable(glue->refclock);
 		pdata->ref_clock_freq = clk_get_rate(glue->refclock);
 	}
 
-	/* TODO: make sure we have this when needed (ie. for WL7) */
 	glue->tcxoclock = of_clk_get_by_name(np, "tcxoclock");
 	if (IS_ERR(glue->tcxoclock)) {
-		dev_err(dev, "couldn't find tcxoclock on the device tree\n");
 		glue->tcxoclock = NULL;
 	} else {
 		clk_prepare_enable(glue->tcxoclock);
-- 
1.7.10.4

Re: [PATCH v3 1/8] wl1251: split wl251 platform data to a separate structure

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 446 bytes --]

On Wed, Jul 03, 2013 at 05:03:22PM +0300, Luciano Coelho wrote:
> Move the wl1251 part of the wl12xx platform data structure into a new
> structure specifically for wl1251.  Change the platform data built-in
> block and board files accordingly.
> 
> Cc: Tony Lindgren <tony@atomide.com>
> Signed-off-by: Luciano Coelho <coelho@ti.com>
> Acked-by: Tony Lindgren <tony@atomide.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

-- 
balbi

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Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1267 bytes --]

Hi,

On Wed, Jul 03, 2013 at 05:03:23PM +0300, Luciano Coelho wrote:
> diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
> index 56a9a4f..953f620 100644
> --- a/arch/arm/mach-omap2/board-4430sdp.c
> +++ b/arch/arm/mach-omap2/board-4430sdp.c
> @@ -703,12 +703,30 @@ static void __init omap4_sdp4430_wifi_init(void)
>  
>  	omap4_sdp4430_wifi_mux_init();
>  	omap4_sdp4430_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
> +
> +	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
> +	if (ret) {
> +		pr_err("error requesting wl12xx gpio: %d\n", ret);
> +		goto out;
> +	}
> +
> +	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
> +	if (ret) {
> +		pr_err("error setting wl12xx irq type: %d\n", ret);
> +		goto free;
> +	}
> +
>  	ret = wl12xx_set_platform_data(&omap4_sdp4430_wlan_data);
>  	if (ret)
>  		pr_err("Error setting wl12xx data: %d\n", ret);
> +
>  	ret = platform_device_register(&omap_vwlan_device);
>  	if (ret)
>  		pr_err("Error registering wl12xx device: %d\n", ret);
> +out:
> +	return;
> +free:
> +	gpio_free(GPIO_WIFI_IRQ);

actually, you should leave this GPIO requested in order to use it as
IRQ.

ditto for all others

-- 
balbi

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Re: [PATCH v3 3/8] wlcore: remove pwr_in_suspend from platform data

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 423 bytes --]

On Wed, Jul 03, 2013 at 05:03:24PM +0300, Luciano Coelho wrote:
> The pwr_in_suspend flag depends on the MMC settings which can be
> retrieved from the SDIO subsystem, so it doesn't need to be part of
> the platform data structure.  Move it to the platform device data that
> is passed from SDIO to wlcore.
> 
> Signed-off-by: Luciano Coelho <coelho@ti.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

-- 
balbi

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Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Luciano Coelho]

On Wed, 2013-07-03 at 17:03 +0300, Luciano Coelho wrote:
> The platform_quirk element in the platform data was used to change the
> way the IRQ is triggered.  When set, the EDGE_IRQ quirk would change
> the irqflags used and treat edge trigger differently from the rest.
> 
> Instead of hiding this irq flag setting behind the quirk, have the
> board files set the flags during initialization.  This will be more
> meaningful than driver-specific quirks when we switch to DT.
> 
> Additionally, fix missing gpio_request() calls in the boarding files
> (so that setting the flags actually works).
> 
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Sekhar Nori <nsekhar@ti.com>
> Signed-off-by: Luciano Coelho <coelho@ti.com>
> ---

[...]

> @@ -5928,16 +5927,21 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
>  	wlcore_adjust_conf(wl);
>  
>  	wl->irq = platform_get_irq(pdev, 0);
> -	wl->platform_quirks = pdata->platform_quirks;
>  	wl->if_ops = pdev_data->if_ops;
>  
> -	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
> -		irqflags = IRQF_TRIGGER_RISING;
> -	else
> -		irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
> +	irq_data = irq_get_irq_data(wl->irq);
> +	if (!irq_data) {
> +		wl1271_error("couldn't get irq data for irq %d\n", wl->irq);
> +		ret = -EINVAL;
> +		goto out_free_nvs;
> +	}
> +
> +	wl->irq_flags = irqd_get_trigger_type(irq_data);

BTW, there seems to be a patch on its way to make reading the flags
easier (ie. no need to get the irq_data first):

http://mid.gmane.org/1367945288-5625-1-git-send-email-javier@dowhile0.org

I'm not sure if this is going to be taken in, but if it does, it would
be nice to change the code here to use the new irq_get_trigger_type()
function.

--
Luca.

Re: [PATCH v3 4/8] wl12xx: use frequency instead of enumerations for pdata clocks

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 501 bytes --]

On Wed, Jul 03, 2013 at 05:03:25PM +0300, Luciano Coelho wrote:
> Instead of defining an enumeration with the FW specific values for the
> different clock rates, use the actual frequency instead.  Also add a
> boolean to specify whether the clock is XTAL or not.
> 
> Change all board files to reflect this.
> 
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Sekhar Nori <nsekhar@ti.com>
> Signed-off-by: Luciano Coelho <coelho@ti.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

-- 
balbi

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Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Luciano Coelho]

On Wed, 2013-07-03 at 17:13 +0300, Felipe Balbi wrote:
> Hi,
> 
> On Wed, Jul 03, 2013 at 05:03:23PM +0300, Luciano Coelho wrote:
> > diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
> > index 56a9a4f..953f620 100644
> > --- a/arch/arm/mach-omap2/board-4430sdp.c
> > +++ b/arch/arm/mach-omap2/board-4430sdp.c
> > @@ -703,12 +703,30 @@ static void __init omap4_sdp4430_wifi_init(void)
> >  
> >  	omap4_sdp4430_wifi_mux_init();
> >  	omap4_sdp4430_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
> > +
> > +	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
> > +	if (ret) {
> > +		pr_err("error requesting wl12xx gpio: %d\n", ret);
> > +		goto out;
> > +	}
> > +
> > +	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
> > +	if (ret) {
> > +		pr_err("error setting wl12xx irq type: %d\n", ret);
> > +		goto free;
> > +	}
> > +
> >  	ret = wl12xx_set_platform_data(&omap4_sdp4430_wlan_data);
> >  	if (ret)
> >  		pr_err("Error setting wl12xx data: %d\n", ret);
> > +
> >  	ret = platform_device_register(&omap_vwlan_device);
> >  	if (ret)
> >  		pr_err("Error registering wl12xx device: %d\n", ret);
> > +out:
> > +	return;
> > +free:
> > +	gpio_free(GPIO_WIFI_IRQ);
> 
> actually, you should leave this GPIO requested in order to use it as
> IRQ.
> 
> ditto for all others

Actually, I don't need to use the GPIO if something goes wrong (ie.
setting the IRQ type or setting the platform data).  Notice that in the
normal cases (ie. without errors), I return before the gpio_free() is
called.

This is not really needed, but it's a bit cleaner and we can probably
release some resources.

--
Luca.

Re: [PATCH v3 5/8] wlcore: add initial device tree support to the sdio module

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 398 bytes --]

On Wed, Jul 03, 2013 at 05:03:26PM +0300, Luciano Coelho wrote:
> If platform data is not available, try to get the required information
> from the device tree.  Register an OF match table and parse the
> appropriate device tree nodes.
> 
> Parse interrupt property only, for now.
> 
> Signed-off-by: Luciano Coelho <coelho@ti.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

-- 
balbi

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Re: [PATCH v3 8/8] wlcore/wl12xx: check if we got correct clock data from DT

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 491 bytes --]

On Wed, Jul 03, 2013 at 05:03:29PM +0300, Luciano Coelho wrote:
> The fref and the tcxo clocks settings are optional in some platforms.
> WiLink8 doesn't need either, so we don't check the values.  WiLink 6
> only needs the fref clock, so we check that it is valid or return with
> an error.  WiLink7 needs both clocks, if either is not available we
> return with an error.
> 
> Signed-off-by: Luciano Coelho <coelho@ti.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

-- 
balbi

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Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1939 bytes --]

On Wed, Jul 03, 2013 at 05:18:14PM +0300, Luciano Coelho wrote:
> On Wed, 2013-07-03 at 17:13 +0300, Felipe Balbi wrote:
> > Hi,
> > 
> > On Wed, Jul 03, 2013 at 05:03:23PM +0300, Luciano Coelho wrote:
> > > diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
> > > index 56a9a4f..953f620 100644
> > > --- a/arch/arm/mach-omap2/board-4430sdp.c
> > > +++ b/arch/arm/mach-omap2/board-4430sdp.c
> > > @@ -703,12 +703,30 @@ static void __init omap4_sdp4430_wifi_init(void)
> > >  
> > >  	omap4_sdp4430_wifi_mux_init();
> > >  	omap4_sdp4430_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
> > > +
> > > +	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
> > > +	if (ret) {
> > > +		pr_err("error requesting wl12xx gpio: %d\n", ret);
> > > +		goto out;
> > > +	}
> > > +
> > > +	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
> > > +	if (ret) {
> > > +		pr_err("error setting wl12xx irq type: %d\n", ret);
> > > +		goto free;
> > > +	}
> > > +
> > >  	ret = wl12xx_set_platform_data(&omap4_sdp4430_wlan_data);
> > >  	if (ret)
> > >  		pr_err("Error setting wl12xx data: %d\n", ret);
> > > +
> > >  	ret = platform_device_register(&omap_vwlan_device);
> > >  	if (ret)
> > >  		pr_err("Error registering wl12xx device: %d\n", ret);
> > > +out:
> > > +	return;
> > > +free:
> > > +	gpio_free(GPIO_WIFI_IRQ);
> > 
> > actually, you should leave this GPIO requested in order to use it as
> > IRQ.
> > 
> > ditto for all others
> 
> Actually, I don't need to use the GPIO if something goes wrong (ie.
> setting the IRQ type or setting the platform data).  Notice that in the
> normal cases (ie. without errors), I return before the gpio_free() is
> called.

hah, missed the 'return' call, my bad :-p

Reviewed-by: Felipe Balbi <balbi@ti.com>
Corrected-my-broken-eye-sight-by: Luciano Coelho <coelho@ti.com>

-- 
balbi

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Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Javier Martinez Canillas]

On Wed, Jul 3, 2013 at 4:15 PM, Luciano Coelho <coelho@ti.com> wrote:
> On Wed, 2013-07-03 at 17:03 +0300, Luciano Coelho wrote:
>> The platform_quirk element in the platform data was used to change the
>> way the IRQ is triggered.  When set, the EDGE_IRQ quirk would change
>> the irqflags used and treat edge trigger differently from the rest.
>>
>> Instead of hiding this irq flag setting behind the quirk, have the
>> board files set the flags during initialization.  This will be more
>> meaningful than driver-specific quirks when we switch to DT.
>>
>> Additionally, fix missing gpio_request() calls in the boarding files
>> (so that setting the flags actually works).
>>
>> Cc: Tony Lindgren <tony@atomide.com>
>> Cc: Sekhar Nori <nsekhar@ti.com>
>> Signed-off-by: Luciano Coelho <coelho@ti.com>
>> ---
>
> [...]
>
>> @@ -5928,16 +5927,21 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
>>       wlcore_adjust_conf(wl);
>>
>>       wl->irq = platform_get_irq(pdev, 0);
>> -     wl->platform_quirks = pdata->platform_quirks;
>>       wl->if_ops = pdev_data->if_ops;
>>
>> -     if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
>> -             irqflags = IRQF_TRIGGER_RISING;
>> -     else
>> -             irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
>> +     irq_data = irq_get_irq_data(wl->irq);
>> +     if (!irq_data) {
>> +             wl1271_error("couldn't get irq data for irq %d\n", wl->irq);
>> +             ret = -EINVAL;
>> +             goto out_free_nvs;
>> +     }
>> +
>> +     wl->irq_flags = irqd_get_trigger_type(irq_data);
>
> BTW, there seems to be a patch on its way to make reading the flags
> easier (ie. no need to get the irq_data first):
>
> http://mid.gmane.org/1367945288-5625-1-git-send-email-javier@dowhile0.org
>
> I'm not sure if this is going to be taken in, but if it does, it would
> be nice to change the code here to use the new irq_get_trigger_type()
> function.
>
> --
> Luca.
>

Hi Luca

That patch has been already merged in Linus tree as commit 1f6236bf
("genirq: Add irq_get_trigger_type() to get IRQ flags").

So yes, it would be better if you can use irq_get_trigger_type()
instead calling irq_get_irq_data() + irqd_get_trigger_type().

Best regards,
Javier

Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Sekhar Nori]

On 7/3/2013 7:33 PM, Luciano Coelho wrote:
> The platform_quirk element in the platform data was used to change the
> way the IRQ is triggered.  When set, the EDGE_IRQ quirk would change
> the irqflags used and treat edge trigger differently from the rest.
> 
> Instead of hiding this irq flag setting behind the quirk, have the
> board files set the flags during initialization.  This will be more
> meaningful than driver-specific quirks when we switch to DT.
> 
> Additionally, fix missing gpio_request() calls in the boarding files
> (so that setting the flags actually works).
> 
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Sekhar Nori <nsekhar@ti.com>
> Signed-off-by: Luciano Coelho <coelho@ti.com>
> ---
>  arch/arm/mach-davinci/board-da850-evm.c      |    8 +++++-

For the board-da850-evm.c change,

Acked-by: Sekhar Nori <nsekhar@ti.com>

Thanks,
Sekhar

Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

[Luciano Coelho]

On Wed, 2013-07-03 at 17:12 +0200, Javier Martinez Canillas wrote:
> On Wed, Jul 3, 2013 at 4:15 PM, Luciano Coelho <coelho@ti.com> wrote:
> > On Wed, 2013-07-03 at 17:03 +0300, Luciano Coelho wrote:
> >> The platform_quirk element in the platform data was used to change the
> >> way the IRQ is triggered.  When set, the EDGE_IRQ quirk would change
> >> the irqflags used and treat edge trigger differently from the rest.
> >>
> >> Instead of hiding this irq flag setting behind the quirk, have the
> >> board files set the flags during initialization.  This will be more
> >> meaningful than driver-specific quirks when we switch to DT.
> >>
> >> Additionally, fix missing gpio_request() calls in the boarding files
> >> (so that setting the flags actually works).
> >>
> >> Cc: Tony Lindgren <tony@atomide.com>
> >> Cc: Sekhar Nori <nsekhar@ti.com>
> >> Signed-off-by: Luciano Coelho <coelho@ti.com>
> >> ---
> >
> > [...]
> >
> >> @@ -5928,16 +5927,21 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
> >>       wlcore_adjust_conf(wl);
> >>
> >>       wl->irq = platform_get_irq(pdev, 0);
> >> -     wl->platform_quirks = pdata->platform_quirks;
> >>       wl->if_ops = pdev_data->if_ops;
> >>
> >> -     if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
> >> -             irqflags = IRQF_TRIGGER_RISING;
> >> -     else
> >> -             irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
> >> +     irq_data = irq_get_irq_data(wl->irq);
> >> +     if (!irq_data) {
> >> +             wl1271_error("couldn't get irq data for irq %d\n", wl->irq);
> >> +             ret = -EINVAL;
> >> +             goto out_free_nvs;
> >> +     }
> >> +
> >> +     wl->irq_flags = irqd_get_trigger_type(irq_data);
> >
> > BTW, there seems to be a patch on its way to make reading the flags
> > easier (ie. no need to get the irq_data first):
> >
> > http://mid.gmane.org/1367945288-5625-1-git-send-email-javier@dowhile0.org
> >
> > I'm not sure if this is going to be taken in, but if it does, it would
> > be nice to change the code here to use the new irq_get_trigger_type()
> > function.

> That patch has been already merged in Linus tree as commit 1f6236bf
> ("genirq: Add irq_get_trigger_type() to get IRQ flags").
> 
> So yes, it would be better if you can use irq_get_trigger_type()
> instead calling irq_get_irq_data() + irqd_get_trigger_type().

That's great, thanks! I'll make this change as soon as I get your patch
into my tree (ie. after the merge window closes).

--
Luca.