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pinctrl: pinctrl-single: pin names for pinctrl-single.bits 

Take care to name pin names as
register-offset.bit-pos-of-pin-in-register in case configuring multiple
pins in register.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Manjunathappa, Prakash 2013-05-21 19:38:01 +05:30 committed by Linus Walleij
parent 4e7e8017a8
commit 6f924b0b7c
1 changed files with 10 additions and 5 deletions
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15
drivers/pinctrl/pinctrl-single.c
View File

@ -30,7 +30,7 @@
#define DRIVER_NAME "pinctrl-single"
#define PCS_MUX_PINS_NAME "pinctrl-single,pins"
#define PCS_MUX_BITS_NAME "pinctrl-single,bits"
#define PCS_REG_NAME_LEN ((sizeof(unsigned long) * 2) + 1)
#define PCS_REG_NAME_LEN ((sizeof(unsigned long) * 2) + 3)
#define PCS_OFF_DISABLED ~0U
/**
@ -744,7 +744,8 @@ static const struct pinconf_ops pcs_pinconf_ops = {
* @pcs: pcs driver instance
* @offset: register offset from base
*/
static int pcs_add_pin(struct pcs_device *pcs, unsigned offset)
static int pcs_add_pin(struct pcs_device *pcs, unsigned offset,
unsigned pin_pos)
{
struct pinctrl_pin_desc *pin;
struct pcs_name *pn;
@ -759,8 +760,8 @@ static int pcs_add_pin(struct pcs_device *pcs, unsigned offset)
pin = &pcs->pins.pa[i];
pn = &pcs->names[i];
sprintf(pn->name, "%lx",
(unsigned long)pcs->res->start + offset);
sprintf(pn->name, "%lx.%d",
(unsigned long)pcs->res->start + offset, pin_pos);
pin->name = pn->name;
pin->number = i;
pcs->pins.cur++;
@ -780,12 +781,14 @@ static int pcs_add_pin(struct pcs_device *pcs, unsigned offset)
static int pcs_allocate_pin_table(struct pcs_device *pcs)
{
int mux_bytes, nr_pins, i;
int num_pins_in_register = 0;
mux_bytes = pcs->width / BITS_PER_BYTE;
if (pcs->bits_per_mux) {
pcs->bits_per_pin = fls(pcs->fmask);
nr_pins = (pcs->size * BITS_PER_BYTE) / pcs->bits_per_pin;
num_pins_in_register = pcs->width / pcs->bits_per_pin;
} else {
nr_pins = pcs->size / mux_bytes;
}
@ -810,14 +813,16 @@ static int pcs_allocate_pin_table(struct pcs_device *pcs)
unsigned offset;
int res;
int byte_num;
int pin_pos = 0;
if (pcs->bits_per_mux) {
byte_num = (pcs->bits_per_pin * i) / BITS_PER_BYTE;
offset = (byte_num / mux_bytes) * mux_bytes;
pin_pos = i % num_pins_in_register;
} else {
offset = i * mux_bytes;
}
res = pcs_add_pin(pcs, offset);
res = pcs_add_pin(pcs, offset, pin_pos);
if (res < 0) {
dev_err(pcs->dev, "error adding pins: %i\n", res);
return res;