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path: root/drivers/gpio/gpio-pxa.c
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Diffstat (limited to 'drivers/gpio/gpio-pxa.c')
-rw-r--r--drivers/gpio/gpio-pxa.c77
1 files changed, 23 insertions, 54 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 9cac88a65f78..9528779ca463 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -26,6 +26,8 @@
26#include <linux/syscore_ops.h> 26#include <linux/syscore_ops.h>
27#include <linux/slab.h> 27#include <linux/slab.h>
28 28
29#include <asm/mach/irq.h>
30
29#include <mach/irqs.h> 31#include <mach/irqs.h>
30 32
31/* 33/*
@@ -59,6 +61,7 @@
59#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2)) 61#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
60 62
61int pxa_last_gpio; 63int pxa_last_gpio;
64static int irq_base;
62 65
63#ifdef CONFIG_OF 66#ifdef CONFIG_OF
64static struct irq_domain *domain; 67static struct irq_domain *domain;
@@ -167,63 +170,14 @@ static inline int __gpio_is_occupied(unsigned gpio)
167 return ret; 170 return ret;
168} 171}
169 172
170#ifdef CONFIG_ARCH_PXA
171static inline int __pxa_gpio_to_irq(int gpio)
172{
173 if (gpio_is_pxa_type(gpio_type))
174 return PXA_GPIO_TO_IRQ(gpio);
175 return -1;
176}
177
178static inline int __pxa_irq_to_gpio(int irq)
179{
180 if (gpio_is_pxa_type(gpio_type))
181 return irq - PXA_GPIO_TO_IRQ(0);
182 return -1;
183}
184#else
185static inline int __pxa_gpio_to_irq(int gpio) { return -1; }
186static inline int __pxa_irq_to_gpio(int irq) { return -1; }
187#endif
188
189#ifdef CONFIG_ARCH_MMP
190static inline int __mmp_gpio_to_irq(int gpio)
191{
192 if (gpio_is_mmp_type(gpio_type))
193 return MMP_GPIO_TO_IRQ(gpio);
194 return -1;
195}
196
197static inline int __mmp_irq_to_gpio(int irq)
198{
199 if (gpio_is_mmp_type(gpio_type))
200 return irq - MMP_GPIO_TO_IRQ(0);
201 return -1;
202}
203#else
204static inline int __mmp_gpio_to_irq(int gpio) { return -1; }
205static inline int __mmp_irq_to_gpio(int irq) { return -1; }
206#endif
207
208static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset) 173static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
209{ 174{
210 int gpio, ret; 175 return chip->base + offset + irq_base;
211
212 gpio = chip->base + offset;
213 ret = __pxa_gpio_to_irq(gpio);
214 if (ret >= 0)
215 return ret;
216 return __mmp_gpio_to_irq(gpio);
217} 176}
218 177
219int pxa_irq_to_gpio(int irq) 178int pxa_irq_to_gpio(int irq)
220{ 179{
221 int ret; 180 return irq - irq_base;
222
223 ret = __pxa_irq_to_gpio(irq);
224 if (ret >= 0)
225 return ret;
226 return __mmp_irq_to_gpio(irq);
227} 181}
228 182
229static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset) 183static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -403,6 +357,9 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
403 struct pxa_gpio_chip *c; 357 struct pxa_gpio_chip *c;
404 int loop, gpio, gpio_base, n; 358 int loop, gpio, gpio_base, n;
405 unsigned long gedr; 359 unsigned long gedr;
360 struct irq_chip *chip = irq_desc_get_chip(desc);
361
362 chained_irq_enter(chip, desc);
406 363
407 do { 364 do {
408 loop = 0; 365 loop = 0;
@@ -422,6 +379,8 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
422 } 379 }
423 } 380 }
424 } while (loop); 381 } while (loop);
382
383 chained_irq_exit(chip, desc);
425} 384}
426 385
427static void pxa_ack_muxed_gpio(struct irq_data *d) 386static void pxa_ack_muxed_gpio(struct irq_data *d)
@@ -535,7 +494,7 @@ const struct irq_domain_ops pxa_irq_domain_ops = {
535 494
536static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev) 495static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev)
537{ 496{
538 int ret, nr_banks, nr_gpios, irq_base; 497 int ret, nr_banks, nr_gpios;
539 struct device_node *prev, *next, *np = pdev->dev.of_node; 498 struct device_node *prev, *next, *np = pdev->dev.of_node;
540 const struct of_device_id *of_id = 499 const struct of_device_id *of_id =
541 of_match_device(pxa_gpio_dt_ids, &pdev->dev); 500 of_match_device(pxa_gpio_dt_ids, &pdev->dev);
@@ -590,10 +549,20 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
590 int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0; 549 int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
591 550
592 ret = pxa_gpio_probe_dt(pdev); 551 ret = pxa_gpio_probe_dt(pdev);
593 if (ret < 0) 552 if (ret < 0) {
594 pxa_last_gpio = pxa_gpio_nums(); 553 pxa_last_gpio = pxa_gpio_nums();
595 else 554#ifdef CONFIG_ARCH_PXA
555 if (gpio_is_pxa_type(gpio_type))
556 irq_base = PXA_GPIO_TO_IRQ(0);
557#endif
558#ifdef CONFIG_ARCH_MMP
559 if (gpio_is_mmp_type(gpio_type))
560 irq_base = MMP_GPIO_TO_IRQ(0);
561#endif
562 } else {
596 use_of = 1; 563 use_of = 1;
564 }
565
597 if (!pxa_last_gpio) 566 if (!pxa_last_gpio)
598 return -EINVAL; 567 return -EINVAL;
599 568