linux-kernel - [PATCH v3] sm501: Add device property

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1467642364-10316-1-git-send-email-ysato@users.sourceforge.jp>
Date:	Mon,  4 Jul 2016 23:26:04 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Lee Jones <lee.jones@...aro.org>
Cc:	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3] sm501: Add device property

Add device proptery on enable integrated peripheral.
It have platform_data. But don't have devicetree.

Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
 .../devicetree/bindings/display/sm501fb.txt        | 11 +++++++++
 drivers/mfd/sm501.c                                | 28 +++++++++++++---------
 2 files changed, 28 insertions(+), 11 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/sm501fb.txt b/Documentation/devicetree/bindings/display/sm501fb.txt
index 9d9f009..9290094 100644
--- a/Documentation/devicetree/bindings/display/sm501fb.txt
+++ b/Documentation/devicetree/bindings/display/sm501fb.txt
@@ -22,6 +22,17 @@ Optional properties:
   set different foreign endian.
 - big-endian: available on little endian systems, to
   set different foreign endian.
+- smi,devices: function block enable bitmap.
+	bit0: USB host
+	bit1: USB slave
+	bit2: SSP Ch0
+	bit3: SSP Ch1
+	bit4: UART Ch0
+	bit5: UART Ch1
+	bit6: Accelerator
+	bit7: AC97
+	bit8: I2S
+	bit9: GPIO
 
 Example for MPC5200:
 	display@1,0 {
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 65cd0d2..e8c6a5e 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -21,6 +21,7 @@
 #include <linux/pci.h>
 #include <linux/i2c-gpio.h>
 #include <linux/slab.h>
+#include <linux/of.h>
 
 #include <linux/sm501.h>
 #include <linux/sm501-regs.h>
@@ -1297,7 +1298,7 @@ static unsigned int sm501_mem_local[] = {
  * Common init code for an SM501
 */
 
-static int sm501_init_dev(struct sm501_devdata *sm)
+static int sm501_init_dev(struct sm501_devdata *sm, unsigned int devices)
 {
 	struct sm501_initdata *idata;
 	struct sm501_platdata *pdata;
@@ -1342,16 +1343,15 @@ static int sm501_init_dev(struct sm501_devdata *sm)
 	pdata = sm->platdata;
 	idata = pdata ? pdata->init : NULL;
 
-	if (idata) {
+	if (idata)
 		sm501_init_regs(sm, idata);
 
-		if (idata->devices & SM501_USE_USB_HOST)
-			sm501_register_usbhost(sm, &mem_avail);
-		if (idata->devices & (SM501_USE_UART0 | SM501_USE_UART1))
-			sm501_register_uart(sm, idata->devices);
-		if (idata->devices & SM501_USE_GPIO)
-			sm501_register_gpio(sm);
-	}
+	if (devices & SM501_USE_USB_HOST)
+		sm501_register_usbhost(sm, &mem_avail);
+	if (devices & (SM501_USE_UART0 | SM501_USE_UART1))
+		sm501_register_uart(sm, devices);
+	if (devices & SM501_USE_GPIO)
+		sm501_register_gpio(sm);
 
 	if (pdata && pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) {
 		if (!sm501_gpio_isregistered(sm))
@@ -1377,6 +1377,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 {
 	struct sm501_devdata *sm;
 	int ret;
+	unsigned int devices = 0;
 
 	sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
 	if (sm == NULL) {
@@ -1415,6 +1416,11 @@ static int sm501_plat_probe(struct platform_device *dev)
 	}
 
 	platform_set_drvdata(dev, sm);
+	if (sm->platdata)
+		devices = sm->platdata->init->devices;
+	if (dev->dev.of_node)
+		of_property_read_u32(dev->dev.of_node, "smi,devices",
+				     &devices);
 
 	sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));
 
@@ -1424,7 +1430,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 		goto err_claim;
 	}
 
-	return sm501_init_dev(sm);
+	return sm501_init_dev(sm, devices);
 
  err_claim:
 	release_resource(sm->regs_claim);
@@ -1635,7 +1641,7 @@ static int sm501_pci_probe(struct pci_dev *dev,
 		goto err4;
 	}
 
-	sm501_init_dev(sm);
+	sm501_init_dev(sm, sm->platdata->init->devices);
 	return 0;
 
  err4:
-- 
2.7.0