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Subject[PATCH v2 04/10] gpio: dwapb: Add max GPIOs macro
Date
Add a new macro DWAPB_MAX_GPIOS which defines the maximum possible number
of GPIO lines corresponding to the maximum DW APB GPIO controller port
width. Use the new macro instead of number literal 32 where it's
applicable.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
drivers/gpio/gpio-dwapb.c | 8 ++++----
include/linux/platform_data/gpio-dwapb.h | 4 +++-
2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 3081213247d8..f34001152850 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -162,7 +162,7 @@ static struct dwapb_gpio_port *dwapb_offs_to_port(struct dwapb_gpio *gpio, unsig

for (i = 0; i < gpio->nr_ports; i++) {
port = &gpio->ports[i];
- if (port->idx == offs / 32)
+ if (port->idx == offs / DWAPB_MAX_GPIOS)
return port;
}

@@ -182,7 +182,7 @@ static void dwapb_toggle_trigger(struct dwapb_gpio *gpio, unsigned int offs)

pol = dwapb_read(gpio, GPIO_INT_POLARITY);
/* Just read the current value right out of the data register */
- val = gc->get(gc, offs % 32);
+ val = gc->get(gc, offs % DWAPB_MAX_GPIOS);
if (val)
pol &= ~BIT(offs);
else
@@ -197,7 +197,7 @@ static u32 dwapb_do_irq(struct dwapb_gpio *gpio)
irq_hw_number_t hwirq;

irq_status = dwapb_read(gpio, GPIO_INTSTATUS);
- for_each_set_bit(hwirq, &irq_status, 32) {
+ for_each_set_bit(hwirq, &irq_status, DWAPB_MAX_GPIOS) {
int gpio_irq = irq_find_mapping(gpio->domain, hwirq);
u32 irq_type = irq_get_trigger_type(gpio_irq);

@@ -599,7 +599,7 @@ static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev)
dev_info(dev,
"failed to get number of gpios for port%d\n",
i);
- pp->ngpio = 32;
+ pp->ngpio = DWAPB_MAX_GPIOS;
}

pp->irq_shared = false;
diff --git a/include/linux/platform_data/gpio-dwapb.h b/include/linux/platform_data/gpio-dwapb.h
index ff1be737bad6..0aa5c6720259 100644
--- a/include/linux/platform_data/gpio-dwapb.h
+++ b/include/linux/platform_data/gpio-dwapb.h
@@ -6,12 +6,14 @@
#ifndef GPIO_DW_APB_H
#define GPIO_DW_APB_H

+#define DWAPB_MAX_GPIOS 32
+
struct dwapb_port_property {
struct fwnode_handle *fwnode;
unsigned int idx;
unsigned int ngpio;
unsigned int gpio_base;
- int irq[32];
+ int irq[DWAPB_MAX_GPIOS];
bool irq_shared;
};

--
2.27.0
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