[PATCH v2] mfd: stmpe: move platform data into mfd driver

From: Linus Walleij
Date: Wed May 25 2016 - 08:22:13 EST


The STMPE platform data is only populated from the device tree
in all existing users, so push the struct and make the OF case
the norm.

Cc: Patrice Chotard <patrice.chotard@xxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
ChangeLog v1->v2:
- Drop check for (!np) NULL device node: as Lee notices, this
can no longer happen on a pure DT driver.
---
drivers/mfd/stmpe.c | 40 ++++++++++++++++++++++++++++------------
include/linux/mfd/stmpe.h | 22 +---------------------
2 files changed, 29 insertions(+), 33 deletions(-)

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index fb8f9e8b75df..94c7cc02fdab 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -23,6 +23,27 @@
#include <linux/regulator/consumer.h>
#include "stmpe.h"

+/**
+ * struct stmpe_platform_data - STMPE platform data
+ * @id: device id to distinguish between multiple STMPEs on the same board
+ * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*)
+ * @irq_trigger: IRQ trigger to use for the interrupt to the host
+ * @autosleep: bool to enable/disable stmpe autosleep
+ * @autosleep_timeout: inactivity timeout in milliseconds for autosleep
+ * @irq_over_gpio: true if gpio is used to get irq
+ * @irq_gpio: gpio number over which irq will be requested (significant only if
+ * irq_over_gpio is true)
+ */
+struct stmpe_platform_data {
+ int id;
+ unsigned int blocks;
+ unsigned int irq_trigger;
+ bool autosleep;
+ bool irq_over_gpio;
+ int irq_gpio;
+ int autosleep_timeout;
+};
+
static int __stmpe_enable(struct stmpe *stmpe, unsigned int blocks)
{
return stmpe->variant->enable(stmpe, blocks, true);
@@ -1187,24 +1208,19 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
/* Called from client specific probe routines */
int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum)
{
- struct stmpe_platform_data *pdata = dev_get_platdata(ci->dev);
+ struct stmpe_platform_data *pdata;
struct device_node *np = ci->dev->of_node;
struct stmpe *stmpe;
int ret;

- if (!pdata) {
- if (!np)
- return -EINVAL;
-
- pdata = devm_kzalloc(ci->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
+ pdata = devm_kzalloc(ci->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;

- stmpe_of_probe(pdata, np);
+ stmpe_of_probe(pdata, np);

- if (of_find_property(np, "interrupts", NULL) == NULL)
- ci->irq = -1;
- }
+ if (of_find_property(np, "interrupts", NULL) == NULL)
+ ci->irq = -1;

stmpe = devm_kzalloc(ci->dev, sizeof(struct stmpe), GFP_KERNEL);
if (!stmpe)
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index cb83883918a7..de748bc7525e 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -62,6 +62,7 @@ enum {

struct stmpe_variant_info;
struct stmpe_client_info;
+struct stmpe_platform_data;

/**
* struct stmpe - STMPE MFD structure
@@ -117,25 +118,4 @@ extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);

#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)

-/**
- * struct stmpe_platform_data - STMPE platform data
- * @id: device id to distinguish between multiple STMPEs on the same board
- * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*)
- * @irq_trigger: IRQ trigger to use for the interrupt to the host
- * @autosleep: bool to enable/disable stmpe autosleep
- * @autosleep_timeout: inactivity timeout in milliseconds for autosleep
- * @irq_over_gpio: true if gpio is used to get irq
- * @irq_gpio: gpio number over which irq will be requested (significant only if
- * irq_over_gpio is true)
- */
-struct stmpe_platform_data {
- int id;
- unsigned int blocks;
- unsigned int irq_trigger;
- bool autosleep;
- bool irq_over_gpio;
- int irq_gpio;
- int autosleep_timeout;
-};
-
#endif
--
2.4.11