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Subject[PATCH v3] sm501: Add device property
Date
Add device proptery on enable integrated peripheral.
It have platform_data. But don't have devicetree.

Signed-off-by: Yoshinori Sato <ysato@users.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
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