[PATCH 01/42] sh-pfc: Split platform data from the sh_pfc structure

Laurent Pinchart
2012-11-21T02:26:53Z

Create a sh_pfc_platform_data structure to store platform data and
reference it from the core sh_pfc structure.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
drivers/sh/pfc/core.c | 89 ++++++++++++++++++++++------------------------
drivers/sh/pfc/gpio.c | 19 +++++-----
drivers/sh/pfc/pinctrl.c | 27 +++++++-------
include/linux/sh_pfc.h | 20 ++++++----
4 files changed, 79 insertions(+), 76 deletions(-)

diff --git a/drivers/sh/pfc/core.c b/drivers/sh/pfc/core.c
index 6816937..ecbe51d 100644
--- a/drivers/sh/pfc/core.c
+++ b/drivers/sh/pfc/core.c
@@ -21,18 +21,13 @@
#include <linux/ioport.h>
#include <linux/pinctrl/machine.h>

-static struct sh_pfc *sh_pfc __read_mostly;
-
-static inline bool sh_pfc_initialized(void)
-{
- return !!sh_pfc;
-}
+static struct sh_pfc sh_pfc __read_mostly;

static void pfc_iounmap(struct sh_pfc *pfc)
{
int k;

- for (k = 0; k < pfc->num_resources; k++)
+ for (k = 0; k < pfc->pdata->num_resources; k++)
if (pfc->window[k].virt)
iounmap(pfc->window[k].virt);

@@ -45,16 +40,16 @@ static int pfc_ioremap(struct sh_pfc *pfc)
struct resource *res;
int k;

- if (!pfc->num_resources)
+ if (!pfc->pdata->num_resources)
return 0;

- pfc->window = kzalloc(pfc->num_resources * sizeof(*pfc->window),
+ pfc->window = kzalloc(pfc->pdata->num_resources * sizeof(*pfc->window),
GFP_NOWAIT);
if (!pfc->window)
goto err1;

- for (k = 0; k < pfc->num_resources; k++) {
- res = pfc->resource + k;
+ for (k = 0; k < pfc->pdata->num_resources; k++) {
+ res = pfc->pdata->resource + k;
WARN_ON(resource_type(res) != IORESOURCE_MEM);
pfc->window[k].phys = res->start;
pfc->window[k].size = resource_size(res);
@@ -79,7 +74,7 @@ static void __iomem *pfc_phys_to_virt(struct sh_pfc *pfc,
int k;

/* scan through physical windows and convert address */
- for (k = 0; k < pfc->num_resources; k++) {
+ for (k = 0; k < pfc->pdata->num_resources; k++) {
window = pfc->window + k;

if (address < window->phys)
@@ -232,8 +227,8 @@ static void write_config_reg(struct sh_pfc *pfc,
data &= mask;
data |= value;

- if (pfc->unlock_reg)
- gpio_write_raw_reg(pfc_phys_to_virt(pfc, pfc->unlock_reg),
+ if (pfc->pdata->unlock_reg)
+ gpio_write_raw_reg(pfc_phys_to_virt(pfc, pfc->pdata->unlock_reg),
32, ~data);

gpio_write_raw_reg(mapped_reg, crp->reg_width, data);
@@ -241,16 +236,16 @@ static void write_config_reg(struct sh_pfc *pfc,

static int setup_data_reg(struct sh_pfc *pfc, unsigned gpio)
{
- struct pinmux_gpio *gpiop = &pfc->gpios[gpio];
+ struct pinmux_gpio *gpiop = &pfc->pdata->gpios[gpio];
struct pinmux_data_reg *data_reg;
int k, n;

- if (!enum_in_range(gpiop->enum_id, &pfc->data))
+ if (!enum_in_range(gpiop->enum_id, &pfc->pdata->data))
return -1;

k = 0;
while (1) {
- data_reg = pfc->data_regs + k;
+ data_reg = pfc->pdata->data_regs + k;

if (!data_reg->reg_width)
break;
@@ -279,12 +274,12 @@ static void setup_data_regs(struct sh_pfc *pfc)
struct pinmux_data_reg *drp;
int k;

- for (k = pfc->first_gpio; k <= pfc->last_gpio; k++)
+ for (k = pfc->pdata->first_gpio; k <= pfc->pdata->last_gpio; k++)
setup_data_reg(pfc, k);

k = 0;
while (1) {
- drp = pfc->data_regs + k;
+ drp = pfc->pdata->data_regs + k;

if (!drp->reg_width)
break;
@@ -298,15 +293,15 @@ static void setup_data_regs(struct sh_pfc *pfc)
int sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp)
{
- struct pinmux_gpio *gpiop = &pfc->gpios[gpio];
+ struct pinmux_gpio *gpiop = &pfc->pdata->gpios[gpio];
int k, n;

- if (!enum_in_range(gpiop->enum_id, &pfc->data))
+ if (!enum_in_range(gpiop->enum_id, &pfc->pdata->data))
return -1;

k = (gpiop->flags & PINMUX_FLAG_DREG) >> PINMUX_FLAG_DREG_SHIFT;
n = (gpiop->flags & PINMUX_FLAG_DBIT) >> PINMUX_FLAG_DBIT_SHIFT;
- *drp = pfc->data_regs + k;
+ *drp = pfc->pdata->data_regs + k;
*bitp = n;
return 0;
}
@@ -323,7 +318,7 @@ static int get_config_reg(struct sh_pfc *pfc, pinmux_enum_t enum_id,

k = 0;
while (1) {
- config_reg = pfc->cfg_regs + k;
+ config_reg = pfc->pdata->cfg_regs + k;

r_width = config_reg->reg_width;
f_width = config_reg->field_width;
@@ -361,12 +356,12 @@ static int get_config_reg(struct sh_pfc *pfc, pinmux_enum_t enum_id,
int sh_pfc_gpio_to_enum(struct sh_pfc *pfc, unsigned gpio, int pos,
pinmux_enum_t *enum_idp)
{
- pinmux_enum_t enum_id = pfc->gpios[gpio].enum_id;
- pinmux_enum_t *data = pfc->gpio_data;
+ pinmux_enum_t enum_id = pfc->pdata->gpios[gpio].enum_id;
+ pinmux_enum_t *data = pfc->pdata->gpio_data;
int k;

- if (!enum_in_range(enum_id, &pfc->data)) {
- if (!enum_in_range(enum_id, &pfc->mark)) {
+ if (!enum_in_range(enum_id, &pfc->pdata->data)) {
+ if (!enum_in_range(enum_id, &pfc->pdata->mark)) {
pr_err("non data/mark enum_id for gpio %d\n", gpio);
return -1;
}
@@ -377,7 +372,7 @@ int sh_pfc_gpio_to_enum(struct sh_pfc *pfc, unsigned gpio, int pos,
return pos + 1;
}

- for (k = 0; k < pfc->gpio_data_size; k++) {
+ for (k = 0; k < pfc->pdata->gpio_data_size; k++) {
if (data[k] == enum_id) {
*enum_idp = data[k + 1];
return k + 1;
@@ -405,19 +400,19 @@ int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
break;

case PINMUX_TYPE_OUTPUT:
- range = &pfc->output;
+ range = &pfc->pdata->output;
break;

case PINMUX_TYPE_INPUT:
- range = &pfc->input;
+ range = &pfc->pdata->input;
break;

case PINMUX_TYPE_INPUT_PULLUP:
- range = &pfc->input_pu;
+ range = &pfc->pdata->input_pu;
break;

case PINMUX_TYPE_INPUT_PULLDOWN:
- range = &pfc->input_pd;
+ range = &pfc->pdata->input_pd;
break;

default:
@@ -437,7 +432,7 @@ int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
break;

/* first check if this is a function enum */
- in_range = enum_in_range(enum_id, &pfc->function);
+ in_range = enum_in_range(enum_id, &pfc->pdata->function);
if (!in_range) {
/* not a function enum */
if (range) {
@@ -502,7 +497,7 @@ int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
}
EXPORT_SYMBOL_GPL(sh_pfc_config_gpio);

-int register_sh_pfc(struct sh_pfc *pfc)
+int register_sh_pfc(struct sh_pfc_platform_data *pdata)
{
int (*initroutine)(struct sh_pfc *) = NULL;
int ret;
@@ -512,26 +507,28 @@ int register_sh_pfc(struct sh_pfc *pfc)
*/
BUILD_BUG_ON(PINMUX_FLAG_TYPE > ((1 << PINMUX_FLAG_DBIT_SHIFT) - 1));

- if (sh_pfc)
+ if (sh_pfc.pdata)
return -EBUSY;

- ret = pfc_ioremap(pfc);
- if (unlikely(ret < 0))
+ sh_pfc.pdata = pdata;
+
+ ret = pfc_ioremap(&sh_pfc);
+ if (unlikely(ret < 0)) {
+ sh_pfc.pdata = NULL;
return ret;
+ }

- spin_lock_init(&pfc->lock);
+ spin_lock_init(&sh_pfc.lock);

pinctrl_provide_dummies();
- setup_data_regs(pfc);
-
- sh_pfc = pfc;
+ setup_data_regs(&sh_pfc);

/*
* Initialize pinctrl bindings first
*/
initroutine = symbol_request(sh_pfc_register_pinctrl);
if (initroutine) {
- ret = (*initroutine)(pfc);
+ ret = (*initroutine)(&sh_pfc);
symbol_put_addr(initroutine);

if (unlikely(ret != 0))
@@ -546,7 +543,7 @@ int register_sh_pfc(struct sh_pfc *pfc)
*/
initroutine = symbol_request(sh_pfc_register_gpiochip);
if (initroutine) {
- ret = (*initroutine)(pfc);
+ ret = (*initroutine)(&sh_pfc);
symbol_put_addr(initroutine);

/*
@@ -560,13 +557,13 @@ int register_sh_pfc(struct sh_pfc *pfc)
}
}

- pr_info("%s support registered\n", pfc->name);
+ pr_info("%s support registered\n", sh_pfc.pdata->name);

return 0;

err:
- pfc_iounmap(pfc);
- sh_pfc = NULL;
+ pfc_iounmap(&sh_pfc);
+ sh_pfc.pdata = NULL;

return ret;
}
diff --git a/drivers/sh/pfc/gpio.c b/drivers/sh/pfc/gpio.c
index 038fa07..9b7e45c 100644
--- a/drivers/sh/pfc/gpio.c
+++ b/drivers/sh/pfc/gpio.c
@@ -103,11 +103,11 @@ static int sh_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
if (pos <= 0 || !enum_id)
break;

- for (i = 0; i < pfc->gpio_irq_size; i++) {
- enum_ids = pfc->gpio_irq[i].enum_ids;
+ for (i = 0; i < pfc->pdata->gpio_irq_size; i++) {
+ enum_ids = pfc->pdata->gpio_irq[i].enum_ids;
for (k = 0; enum_ids[k]; k++) {
if (enum_ids[k] == enum_id)
- return pfc->gpio_irq[i].irq;
+ return pfc->pdata->gpio_irq[i].irq;
}
}
}
@@ -128,12 +128,12 @@ static void sh_pfc_gpio_setup(struct sh_pfc_chip *chip)
gc->set = sh_gpio_set;
gc->to_irq = sh_gpio_to_irq;

- WARN_ON(pfc->first_gpio != 0); /* needs testing */
+ WARN_ON(pfc->pdata->first_gpio != 0); /* needs testing */

- gc->label = pfc->name;
+ gc->label = pfc->pdata->name;
gc->owner = THIS_MODULE;
- gc->base = pfc->first_gpio;
- gc->ngpio = (pfc->last_gpio - pfc->first_gpio) + 1;
+ gc->base = pfc->pdata->first_gpio;
+ gc->ngpio = (pfc->pdata->last_gpio - pfc->pdata->first_gpio) + 1;
}

int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
@@ -154,7 +154,8 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
kfree(chip);

pr_info("%s handling gpio %d -> %d\n",
- pfc->name, pfc->first_gpio, pfc->last_gpio);
+ pfc->pdata->name, pfc->pdata->first_gpio,
+ pfc->pdata->last_gpio);

return ret;
}
@@ -179,7 +180,7 @@ static int __devinit sh_pfc_gpio_probe(struct platform_device *pdev)
chip = gpio_to_pfc_chip(gc);
platform_set_drvdata(pdev, chip);

- pr_info("attaching to GPIO chip %s\n", chip->pfc->name);
+ pr_info("attaching to GPIO chip %s\n", chip->pfc->pdata->name);

return 0;
}
diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
index 0646bf6..447fb60 100644
--- a/drivers/sh/pfc/pinctrl.c
+++ b/drivers/sh/pfc/pinctrl.c
@@ -140,7 +140,7 @@ static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,

spin_lock_irqsave(&pfc->lock, flags);

- pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;

/*
* See if the present config needs to first be de-configured.
@@ -172,8 +172,8 @@ static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,
GPIO_CFG_REQ) != 0)
goto err;

- pfc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
- pfc->gpios[offset].flags |= new_type;
+ pfc->pdata->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
+ pfc->pdata->gpios[offset].flags |= new_type;

ret = 0;

@@ -195,7 +195,7 @@ static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev,

spin_lock_irqsave(&pfc->lock, flags);

- pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;

switch (pinmux_type) {
case PINMUX_TYPE_FUNCTION:
@@ -236,7 +236,7 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,

spin_lock_irqsave(&pfc->lock, flags);

- pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;

sh_pfc_config_gpio(pfc, offset, pinmux_type, GPIO_CFG_FREE);

@@ -270,7 +270,7 @@ static int sh_pfc_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin,
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;

- *config = pfc->gpios[pin].flags & PINMUX_FLAG_TYPE;
+ *config = pfc->pdata->gpios[pin].flags & PINMUX_FLAG_TYPE;

return 0;
}
@@ -357,7 +357,7 @@ static int __devinit sh_pfc_map_gpios(struct sh_pfc *pfc,
unsigned long flags;
int i;

- pmx->nr_pads = pfc->last_gpio - pfc->first_gpio + 1;
+ pmx->nr_pads = pfc->pdata->last_gpio - pfc->pdata->first_gpio + 1;

pmx->pads = kmalloc(sizeof(struct pinctrl_pin_desc) * pmx->nr_pads,
GFP_KERNEL);
@@ -376,9 +376,9 @@ static int __devinit sh_pfc_map_gpios(struct sh_pfc *pfc,
*/
for (i = 0; i < pmx->nr_pads; i++) {
struct pinctrl_pin_desc *pin = pmx->pads + i;
- struct pinmux_gpio *gpio = pfc->gpios + i;
+ struct pinmux_gpio *gpio = pfc->pdata->gpios + i;

- pin->number = pfc->first_gpio + i;
+ pin->number = pfc->pdata->first_gpio + i;
pin->name = gpio->name;

/* XXX */
@@ -410,7 +410,7 @@ static int __devinit sh_pfc_map_functions(struct sh_pfc *pfc,
spin_lock_irqsave(&pmx->lock, flags);

for (i = fn = 0; i < pmx->nr_pads; i++) {
- struct pinmux_gpio *gpio = pfc->gpios + i;
+ struct pinmux_gpio *gpio = pfc->pdata->gpios + i;

if ((gpio->flags & PINMUX_FLAG_TYPE) == PINMUX_TYPE_FUNCTION)
pmx->functions[fn++] = gpio;
@@ -446,9 +446,10 @@ static int __devinit sh_pfc_pinctrl_probe(struct platform_device *pdev)
goto free_functions;
}

- sh_pfc_gpio_range.npins = pfc->last_gpio - pfc->first_gpio + 1;
- sh_pfc_gpio_range.base = pfc->first_gpio;
- sh_pfc_gpio_range.pin_base = pfc->first_gpio;
+ sh_pfc_gpio_range.npins = pfc->pdata->last_gpio
+ - pfc->pdata->first_gpio + 1;
+ sh_pfc_gpio_range.base = pfc->pdata->first_gpio;
+ sh_pfc_gpio_range.pin_base = pfc->pdata->first_gpio;

pinctrl_add_gpio_range(sh_pfc_pmx->pctl, &sh_pfc_gpio_range);

diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h
index c19a092..58587f9 100644
--- a/include/linux/sh_pfc.h
+++ b/include/linux/sh_pfc.h
@@ -94,7 +94,7 @@ struct pfc_window {
unsigned long size;
};

-struct sh_pfc {
+struct sh_pfc_platform_data {
char *name;
pinmux_enum_t reserved_id;
struct pinmux_range data;
@@ -117,17 +117,21 @@ struct sh_pfc {
struct pinmux_irq *gpio_irq;
unsigned int gpio_irq_size;

- spinlock_t lock;
-
struct resource *resource;
unsigned int num_resources;
- struct pfc_window *window;

unsigned long unlock_reg;
};

+struct sh_pfc {
+ struct sh_pfc_platform_data *pdata;
+ spinlock_t lock;
+
+ struct pfc_window *window;
+};
+
/* XXX compat for now */
-#define pinmux_info sh_pfc
+#define pinmux_info sh_pfc_platform_data

/* drivers/sh/pfc/gpio.c */
int sh_pfc_register_gpiochip(struct sh_pfc *pfc);
@@ -136,7 +140,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc);
int sh_pfc_register_pinctrl(struct sh_pfc *pfc);

/* drivers/sh/pfc/core.c */
-int register_sh_pfc(struct sh_pfc *pfc);
+int register_sh_pfc(struct sh_pfc_platform_data *pfc);

int sh_pfc_read_bit(struct pinmux_data_reg *dr, unsigned long in_pos);
void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos,
@@ -151,8 +155,8 @@ int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
/* xxx */
static inline int register_pinmux(struct pinmux_info *pip)
{
- struct sh_pfc *pfc = pip;
- return register_sh_pfc(pfc);
+ struct sh_pfc_platform_data *pdata = pip;
+ return register_sh_pfc(pdata);
}

enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE };
--
1.7.8.6