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openwrt-owl/target/linux/generic/patches-3.13/025-bcma_backport.patch

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--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -75,6 +75,7 @@ config BCMA_DRIVER_GMAC_CMN
config BCMA_DRIVER_GPIO
bool "BCMA GPIO driver"
depends on BCMA && GPIOLIB
+ select IRQ_DOMAIN if BCMA_HOST_SOC
help
Driver to provide access to the GPIO pins of the bcma bus.
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -33,8 +33,6 @@ int __init bcma_bus_early_register(struc
int bcma_bus_suspend(struct bcma_bus *bus);
int bcma_bus_resume(struct bcma_bus *bus);
#endif
-struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
- u8 unit);
/* scan.c */
int bcma_bus_scan(struct bcma_bus *bus);
--- a/drivers/bcma/driver_chipcommon_sflash.c
+++ b/drivers/bcma/driver_chipcommon_sflash.c
@@ -38,7 +38,7 @@ static const struct bcma_sflash_tbl_e bc
{ "M25P32", 0x15, 0x10000, 64, },
{ "M25P64", 0x16, 0x10000, 128, },
{ "M25FL128", 0x17, 0x10000, 256, },
- { 0 },
+ { NULL },
};
static const struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
@@ -56,7 +56,7 @@ static const struct bcma_sflash_tbl_e bc
{ "SST25VF016", 0x41, 0x1000, 512, },
{ "SST25VF032", 0x4a, 0x1000, 1024, },
{ "SST25VF064", 0x4b, 0x1000, 2048, },
- { 0 },
+ { NULL },
};
static const struct bcma_sflash_tbl_e bcma_sflash_at_tbl[] = {
@@ -67,7 +67,7 @@ static const struct bcma_sflash_tbl_e bc
{ "AT45DB161", 0x2c, 512, 4096, },
{ "AT45DB321", 0x34, 512, 8192, },
{ "AT45DB642", 0x3c, 1024, 8192, },
- { 0 },
+ { NULL },
};
static void bcma_sflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
--- a/drivers/bcma/driver_gpio.c
+++ b/drivers/bcma/driver_gpio.c
@@ -9,6 +9,9 @@
*/
#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
#include <linux/export.h>
#include <linux/bcma/bcma.h>
@@ -73,19 +76,136 @@ static void bcma_gpio_free(struct gpio_c
bcma_chipco_gpio_pullup(cc, 1 << gpio, 0);
}
+#if IS_BUILTIN(CONFIG_BCMA_HOST_SOC)
static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
{
struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip);
if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
- return bcma_core_irq(cc->core);
+ return irq_find_mapping(cc->irq_domain, gpio);
else
return -EINVAL;
}
+static void bcma_gpio_irq_unmask(struct irq_data *d)
+{
+ struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
+ int gpio = irqd_to_hwirq(d);
+ u32 val = bcma_chipco_gpio_in(cc, BIT(gpio));
+
+ bcma_chipco_gpio_polarity(cc, BIT(gpio), val);
+ bcma_chipco_gpio_intmask(cc, BIT(gpio), BIT(gpio));
+}
+
+static void bcma_gpio_irq_mask(struct irq_data *d)
+{
+ struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
+ int gpio = irqd_to_hwirq(d);
+
+ bcma_chipco_gpio_intmask(cc, BIT(gpio), 0);
+}
+
+static struct irq_chip bcma_gpio_irq_chip = {
+ .name = "BCMA-GPIO",
+ .irq_mask = bcma_gpio_irq_mask,
+ .irq_unmask = bcma_gpio_irq_unmask,
+};
+
+static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
+{
+ struct bcma_drv_cc *cc = dev_id;
+ u32 val = bcma_cc_read32(cc, BCMA_CC_GPIOIN);
+ u32 mask = bcma_cc_read32(cc, BCMA_CC_GPIOIRQ);
+ u32 pol = bcma_cc_read32(cc, BCMA_CC_GPIOPOL);
+ unsigned long irqs = (val ^ pol) & mask;
+ int gpio;
+
+ if (!irqs)
+ return IRQ_NONE;
+
+ for_each_set_bit(gpio, &irqs, cc->gpio.ngpio)
+ generic_handle_irq(bcma_gpio_to_irq(&cc->gpio, gpio));
+ bcma_chipco_gpio_polarity(cc, irqs, val & irqs);
+
+ return IRQ_HANDLED;
+}
+
+static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
+{
+ struct gpio_chip *chip = &cc->gpio;
+ int gpio, hwirq, err;
+
+ if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
+ return 0;
+
+ cc->irq_domain = irq_domain_add_linear(NULL, chip->ngpio,
+ &irq_domain_simple_ops, cc);
+ if (!cc->irq_domain) {
+ err = -ENODEV;
+ goto err_irq_domain;
+ }
+ for (gpio = 0; gpio < chip->ngpio; gpio++) {
+ int irq = irq_create_mapping(cc->irq_domain, gpio);
+
+ irq_set_chip_data(irq, cc);
+ irq_set_chip_and_handler(irq, &bcma_gpio_irq_chip,
+ handle_simple_irq);
+ }
+
+ hwirq = bcma_core_irq(cc->core);
+ err = request_irq(hwirq, bcma_gpio_irq_handler, IRQF_SHARED, "gpio",
+ cc);
+ if (err)
+ goto err_req_irq;
+
+ bcma_chipco_gpio_intmask(cc, ~0, 0);
+ bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO);
+
+ return 0;
+
+err_req_irq:
+ for (gpio = 0; gpio < chip->ngpio; gpio++) {
+ int irq = irq_find_mapping(cc->irq_domain, gpio);
+
+ irq_dispose_mapping(irq);
+ }
+ irq_domain_remove(cc->irq_domain);
+err_irq_domain:
+ return err;
+}
+
+static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+{
+ struct gpio_chip *chip = &cc->gpio;
+ int gpio;
+
+ if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
+ return;
+
+ bcma_cc_mask32(cc, BCMA_CC_IRQMASK, ~BCMA_CC_IRQ_GPIO);
+ free_irq(bcma_core_irq(cc->core), cc);
+ for (gpio = 0; gpio < chip->ngpio; gpio++) {
+ int irq = irq_find_mapping(cc->irq_domain, gpio);
+
+ irq_dispose_mapping(irq);
+ }
+ irq_domain_remove(cc->irq_domain);
+}
+#else
+static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
+{
+ return 0;
+}
+
+static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+{
+}
+#endif
+
int bcma_gpio_init(struct bcma_drv_cc *cc)
{
struct gpio_chip *chip = &cc->gpio;
+ int err;
chip->label = "bcma_gpio";
chip->owner = THIS_MODULE;
@@ -95,7 +215,9 @@ int bcma_gpio_init(struct bcma_drv_cc *c
chip->set = bcma_gpio_set_value;
chip->direction_input = bcma_gpio_direction_input;
chip->direction_output = bcma_gpio_direction_output;
+#if IS_BUILTIN(CONFIG_BCMA_HOST_SOC)
chip->to_irq = bcma_gpio_to_irq;
+#endif
chip->ngpio = 16;
/* There is just one SoC in one device and its GPIO addresses should be
* deterministic to address them more easily. The other buses could get
@@ -105,10 +227,21 @@ int bcma_gpio_init(struct bcma_drv_cc *c
else
chip->base = -1;
- return gpiochip_add(chip);
+ err = bcma_gpio_irq_domain_init(cc);
+ if (err)
+ return err;
+
+ err = gpiochip_add(chip);
+ if (err) {
+ bcma_gpio_irq_domain_exit(cc);
+ return err;
+ }
+
+ return 0;
}
int bcma_gpio_unregister(struct bcma_drv_cc *cc)
{
+ bcma_gpio_irq_domain_exit(cc);
return gpiochip_remove(&cc->gpio);
}
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -238,7 +238,6 @@ static void bcma_host_pci_remove(struct
pci_release_regions(dev);
pci_disable_device(dev);
kfree(bus);
- pci_set_drvdata(dev, NULL);
}
#ifdef CONFIG_PM_SLEEP
@@ -270,7 +269,7 @@ static SIMPLE_DEV_PM_OPS(bcma_pm_ops, bc
#endif /* CONFIG_PM_SLEEP */
-static DEFINE_PCI_DEVICE_TABLE(bcma_pci_bridge_tbl) = {
+static const struct pci_device_id bcma_pci_bridge_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4313) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 43224) },
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -78,18 +78,6 @@ static u16 bcma_cc_core_id(struct bcma_b
return BCMA_CORE_CHIPCOMMON;
}
-struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
-{
- struct bcma_device *core;
-
- list_for_each_entry(core, &bus->cores, list) {
- if (core->id.id == coreid)
- return core;
- }
- return NULL;
-}
-EXPORT_SYMBOL_GPL(bcma_find_core);
-
struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
u8 unit)
{
@@ -101,6 +89,7 @@ struct bcma_device *bcma_find_core_unit(
}
return NULL;
}
+EXPORT_SYMBOL_GPL(bcma_find_core_unit);
bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
int timeout)
@@ -176,6 +165,7 @@ static int bcma_register_cores(struct bc
bcma_err(bus,
"Could not register dev for core 0x%03X\n",
core->id.id);
+ put_device(&core->dev);
continue;
}
core->dev_registered = true;
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -418,7 +418,14 @@ static inline void bcma_maskset16(struct
bcma_write16(cc, offset, (bcma_read16(cc, offset) & mask) | set);
}
-extern struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid);
+extern struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
+ u8 unit);
+static inline struct bcma_device *bcma_find_core(struct bcma_bus *bus,
+ u16 coreid)
+{
+ return bcma_find_core_unit(bus, coreid, 0);
+}
+
extern bool bcma_core_is_enabled(struct bcma_device *core);
extern void bcma_core_disable(struct bcma_device *core, u32 flags);
extern int bcma_core_enable(struct bcma_device *core, u32 flags);
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -640,6 +640,7 @@ struct bcma_drv_cc {
spinlock_t gpio_lock;
#ifdef CONFIG_BCMA_DRIVER_GPIO
struct gpio_chip gpio;
+ struct irq_domain *irq_domain;
#endif
};
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