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Message-Id: <1397659455-13638-2-git-send-email-linus.walleij@linaro.org>
Date: Wed, 16 Apr 2014 16:44:10 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Samuel Ortiz <sameo@...ux.intel.com>,
Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org
Cc: Silvio F <silvio.fricke@...il.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Sascha Hauer <s.hauer@...gutronix.de>,
Shawn Guo <shawn.guo@...aro.org>,
Viresh Kumar <viresh.linux@...il.com>,
Shiraz Hashim <shiraz.hashim@...com>, spear-devel@...t.st.com,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 1/6] mfd: stmpe: root out static GPIO and IRQ assignments
The only platform using the STMPE expander now boots from
device tree using all-dynamic GPIO and IRQ number assignments, so
remove the mechanism to pass this from the device tree entirely.
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
drivers/gpio/gpio-stmpe.c | 18 +++++-------------
drivers/mfd/stmpe.c | 3 +--
include/linux/mfd/stmpe.h | 14 --------------
3 files changed, 6 insertions(+), 29 deletions(-)
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 2776a09bee58..628b58494294 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -23,7 +23,8 @@
enum { REG_RE, REG_FE, REG_IE };
#define CACHE_NR_REGS 3
-#define CACHE_NR_BANKS (STMPE_NR_GPIOS / 8)
+/* No variant has more than 24 GPIOs */
+#define CACHE_NR_BANKS (24 / 8)
struct stmpe_gpio {
struct gpio_chip chip;
@@ -31,8 +32,6 @@ struct stmpe_gpio {
struct device *dev;
struct mutex irq_lock;
struct irq_domain *domain;
-
- int irq_base;
unsigned norequest_mask;
/* Caches of interrupt control registers for bus_lock */
@@ -311,13 +310,8 @@ static const struct irq_domain_ops stmpe_gpio_irq_simple_ops = {
static int stmpe_gpio_irq_init(struct stmpe_gpio *stmpe_gpio,
struct device_node *np)
{
- int base = 0;
-
- if (!np)
- base = stmpe_gpio->irq_base;
-
stmpe_gpio->domain = irq_domain_add_simple(np,
- stmpe_gpio->chip.ngpio, base,
+ stmpe_gpio->chip.ngpio, 0,
&stmpe_gpio_irq_simple_ops, stmpe_gpio);
if (!stmpe_gpio->domain) {
dev_err(stmpe_gpio->dev, "failed to create irqdomain\n");
@@ -354,7 +348,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
#ifdef CONFIG_OF
stmpe_gpio->chip.of_node = np;
#endif
- stmpe_gpio->chip.base = pdata ? pdata->gpio_base : -1;
+ stmpe_gpio->chip.base = -1;
if (pdata)
stmpe_gpio->norequest_mask = pdata->norequest_mask;
@@ -362,9 +356,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
of_property_read_u32(np, "st,norequest-mask",
&stmpe_gpio->norequest_mask);
- if (irq >= 0)
- stmpe_gpio->irq_base = stmpe->irq_base + STMPE_INT_GPIO(0);
- else
+ if (irq < 0)
dev_info(&pdev->dev,
"device configured in no-irq mode; "
"irqs are not available\n");
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 3c7eec6917d7..6155230ae29c 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -1063,7 +1063,7 @@ static int stmpe_chip_init(struct stmpe *stmpe)
static int stmpe_add_device(struct stmpe *stmpe, const struct mfd_cell *cell)
{
return mfd_add_devices(stmpe->dev, stmpe->pdata->id, cell, 1,
- NULL, stmpe->irq_base, stmpe->domain);
+ NULL, 0, stmpe->domain);
}
static int stmpe_devices_init(struct stmpe *stmpe)
@@ -1167,7 +1167,6 @@ int stmpe_probe(struct stmpe_client_info *ci, int partnum)
stmpe->dev = ci->dev;
stmpe->client = ci->client;
stmpe->pdata = pdata;
- stmpe->irq_base = pdata->irq_base;
stmpe->ci = ci;
stmpe->partnum = partnum;
stmpe->variant = stmpe_variant_info[partnum];
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index 48395a69a7e9..3f8798e4a87d 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -73,7 +73,6 @@ struct stmpe_client_info;
* @regs: list of addresses of registers which are at different addresses on
* different variants. Indexed by one of STMPE_IDX_*.
* @irq: irq number for stmpe
- * @irq_base: starting IRQ number for internal IRQs
* @num_gpios: number of gpios, differs for variants
* @ier: cache of IER registers for bus_lock
* @oldier: cache of IER registers for bus_lock
@@ -91,7 +90,6 @@ struct stmpe {
const u8 *regs;
int irq;
- int irq_base;
int num_gpios;
u8 ier[2];
u8 oldier[2];
@@ -132,8 +130,6 @@ struct stmpe_keypad_platform_data {
/**
* struct stmpe_gpio_platform_data - STMPE GPIO platform data
- * @gpio_base: first gpio number assigned. A maximum of
- * %STMPE_NR_GPIOS GPIOs will be allocated.
* @norequest_mask: bitmask specifying which GPIOs should _not_ be
* requestable due to different usage (e.g. touch, keypad)
* STMPE_GPIO_NOREQ_* macros can be used here.
@@ -141,7 +137,6 @@ struct stmpe_keypad_platform_data {
* @remove: board specific remove callback
*/
struct stmpe_gpio_platform_data {
- int gpio_base;
unsigned norequest_mask;
void (*setup)(struct stmpe *stmpe, unsigned gpio_base);
void (*remove)(struct stmpe *stmpe, unsigned gpio_base);
@@ -195,8 +190,6 @@ struct stmpe_ts_platform_data {
* @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_base: base IRQ number. %STMPE_NR_IRQS irqs will be used, or
- * %STMPE_NR_INTERNAL_IRQS if the GPIO driver is not used.
* @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)
@@ -207,7 +200,6 @@ struct stmpe_ts_platform_data {
struct stmpe_platform_data {
int id;
unsigned int blocks;
- int irq_base;
unsigned int irq_trigger;
bool autosleep;
bool irq_over_gpio;
@@ -219,10 +211,4 @@ struct stmpe_platform_data {
struct stmpe_ts_platform_data *ts;
};
-#define STMPE_NR_INTERNAL_IRQS 9
-#define STMPE_INT_GPIO(x) (STMPE_NR_INTERNAL_IRQS + (x))
-
-#define STMPE_NR_GPIOS 24
-#define STMPE_NR_IRQS STMPE_INT_GPIO(STMPE_NR_GPIOS)
-
#endif
--
1.9.0
--
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