Merge branch 'nfc-s3fwrn5-Few-cleanups'

Krzysztof Kozlowski says:

====================
nfc: s3fwrn5: Few cleanups

Changes since v2:
1. Fix dtschema ID after rename (patch 1/8).
2. Apply patch 9/9 (defconfig change).

Changes since v1:
1. Rename dtschema file and add additionalProperties:false, as Rob
   suggested,
2. Add Marek's tested-by,
3. New patches: #4, #5, #6, #7 and #9.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

CREDITS

@@ -191,6 +191,10 @@ N: Krishna Balasubramanian
 E: balasub@cis.ohio-state.edu
 D: Wrote SYS V IPC (part of standard kernel since 0.99.10)
 
+B: Robert Baldyga
+E: r.baldyga@hackerion.com
+D: Samsung S3FWRN5 NCI NFC Controller
+
 N: Chris Ball
 E: chris@printf.net
 D: Former maintainer of the MMC/SD/SDIO subsystem.

Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/nfc/samsung,s3fwrn5.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S3FWRN5 NCI NFC Controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+  - Krzysztof Opasiak <k.opasiak@samsung.com>
+
+properties:
+  compatible:
+    const: samsung,s3fwrn5-i2c
+
+  en-gpios:
+    maxItems: 1
+    description:
+      Output GPIO pin used for enabling/disabling the chip
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  wake-gpios:
+    maxItems: 1
+    description:
+      Output GPIO pin used to enter firmware mode and sleep/wakeup control
+
+  s3fwrn5,en-gpios:
+    maxItems: 1
+    deprecated: true
+    description:
+      Use en-gpios
+
+  s3fwrn5,fw-gpios:
+    maxItems: 1
+    deprecated: true
+    description:
+      Use wake-gpios
+
+additionalProperties: false
+
+required:
+  - compatible
+  - en-gpios
+  - interrupts
+  - reg
+  - wake-gpios
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c4 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        s3fwrn5@27 {
+            compatible = "samsung,s3fwrn5-i2c";
+            reg = <0x27>;
+
+            interrupt-parent = <&gpa1>;
+            interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+
+            en-gpios = <&gpf1 4 GPIO_ACTIVE_HIGH>;
+            wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
+        };
+    };

MAINTAINERS

@@ -15292,10 +15292,11 @@ F:	drivers/media/platform/s3c-camif/
 F:	include/media/drv-intf/s3c_camif.h
 
 SAMSUNG S3FWRN5 NFC DRIVER
-M:	Robert Baldyga <r.baldyga@samsung.com>
+M:	Krzysztof Kozlowski <krzk@kernel.org>
 M:	Krzysztof Opasiak <k.opasiak@samsung.com>
 L:	linux-nfc@lists.01.org (moderated for non-subscribers)
-S:	Supported
+S:	Maintained
+F:	Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
 F:	drivers/nfc/s3fwrn5
 
 SAMSUNG S5C73M3 CAMERA DRIVER

arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi

@@ -795,8 +795,8 @@
 		reg = <0x27>;
 		interrupt-parent = <&gpa1>;
 		interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
-		s3fwrn5,en-gpios = <&gpf1 4 GPIO_ACTIVE_HIGH>;
-		s3fwrn5,fw-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
+		en-gpios = <&gpf1 4 GPIO_ACTIVE_HIGH>;
+		wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
 	};
 };
 

drivers/nfc/s3fwrn5/Kconfig

@@ -2,6 +2,7 @@
 config NFC_S3FWRN5
 	tristate
 	select CRYPTO
+	select CRYPTO_HASH
 	help
 	  Core driver for Samsung S3FWRN5 NFC chip. Contains core utilities
 	  of chip. It's intended to be used by PHYs to avoid duplicating lots

drivers/nfc/s3fwrn5/firmware.c

@@ -348,7 +348,7 @@ static int s3fwrn5_fw_get_base_addr(
 }
 
 static inline bool
-s3fwrn5_fw_is_custom(struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
+s3fwrn5_fw_is_custom(const struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
 {
 	return !!bootinfo->hw_version[2];
 }
@@ -399,7 +399,7 @@ int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info)
 	return ret;
 }
 
-bool s3fwrn5_fw_check_version(struct s3fwrn5_fw_info *fw_info, u32 version)
+bool s3fwrn5_fw_check_version(const struct s3fwrn5_fw_info *fw_info, u32 version)
 {
 	struct s3fwrn5_fw_version *new = (void *) &fw_info->fw.version;
 	struct s3fwrn5_fw_version *old = (void *) &version;

drivers/nfc/s3fwrn5/firmware.h

@@ -91,7 +91,7 @@ struct s3fwrn5_fw_info {
 
 void s3fwrn5_fw_init(struct s3fwrn5_fw_info *fw_info, const char *fw_name);
 int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info);
-bool s3fwrn5_fw_check_version(struct s3fwrn5_fw_info *fw_info, u32 version);
+bool s3fwrn5_fw_check_version(const struct s3fwrn5_fw_info *fw_info, u32 version);
 int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info);
 void s3fwrn5_fw_cleanup(struct s3fwrn5_fw_info *fw_info);
 

drivers/nfc/s3fwrn5/i2c.c

@@ -164,7 +164,6 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
 static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
 {
 	struct s3fwrn5_i2c_phy *phy = phy_id;
-	int ret = 0;
 
 	if (!phy || !phy->ndev) {
 		WARN_ON_ONCE(1);
@@ -179,10 +178,9 @@ static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
 	switch (phy->mode) {
 	case S3FWRN5_MODE_NCI:
 	case S3FWRN5_MODE_FW:
-		ret = s3fwrn5_i2c_read(phy);
+		s3fwrn5_i2c_read(phy);
 		break;
 	case S3FWRN5_MODE_COLD:
-		ret = -EREMOTEIO;
 		break;
 	}
 
@@ -200,13 +198,21 @@ static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
 	if (!np)
 		return -ENODEV;
 
-	phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
-	if (!gpio_is_valid(phy->gpio_en))
-		return -ENODEV;
+	phy->gpio_en = of_get_named_gpio(np, "en-gpios", 0);
+	if (!gpio_is_valid(phy->gpio_en)) {
+		/* Support also deprecated property */
+		phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
+		if (!gpio_is_valid(phy->gpio_en))
+			return -ENODEV;
+	}
 
-	phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
-	if (!gpio_is_valid(phy->gpio_fw_wake))
-		return -ENODEV;
+	phy->gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
+	if (!gpio_is_valid(phy->gpio_fw_wake)) {
+		/* Support also deprecated property */
+		phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
+		if (!gpio_is_valid(phy->gpio_fw_wake))
+			return -ENODEV;
+	}
 
 	return 0;
 }