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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/bcma
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/bcma')
-rw-r--r--kernel/drivers/bcma/Kconfig14
-rw-r--r--kernel/drivers/bcma/bcma_private.h1
-rw-r--r--kernel/drivers/bcma/driver_gpio.c112
-rw-r--r--kernel/drivers/bcma/main.c31
4 files changed, 80 insertions, 78 deletions
diff --git a/kernel/drivers/bcma/Kconfig b/kernel/drivers/bcma/Kconfig
index fc6ffcfa8..023d448ed 100644
--- a/kernel/drivers/bcma/Kconfig
+++ b/kernel/drivers/bcma/Kconfig
@@ -29,12 +29,6 @@ config BCMA_HOST_PCI
select BCMA_DRIVER_PCI
default y
-config BCMA_DRIVER_PCI_HOSTMODE
- bool "Driver for PCI core working in hostmode"
- depends on BCMA && MIPS && BCMA_HOST_PCI
- help
- PCI core hostmode operation (external PCI bus).
-
config BCMA_HOST_SOC
bool "Support for BCMA in a SoC"
depends on BCMA
@@ -61,6 +55,12 @@ config BCMA_DRIVER_PCI
This driver is also prerequisite for a hostmode PCIe core
support.
+config BCMA_DRIVER_PCI_HOSTMODE
+ bool "Driver for PCI core working in hostmode"
+ depends on BCMA && MIPS && BCMA_DRIVER_PCI
+ help
+ PCI core hostmode operation (external PCI bus).
+
config BCMA_DRIVER_MIPS
bool "BCMA Broadcom MIPS core driver"
depends on BCMA && MIPS
@@ -92,7 +92,7 @@ config BCMA_DRIVER_GMAC_CMN
config BCMA_DRIVER_GPIO
bool "BCMA GPIO driver"
depends on BCMA && GPIOLIB
- select IRQ_DOMAIN if BCMA_HOST_SOC
+ select GPIOLIB_IRQCHIP if BCMA_HOST_SOC
help
Driver to provide access to the GPIO pins of the bcma bus.
diff --git a/kernel/drivers/bcma/bcma_private.h b/kernel/drivers/bcma/bcma_private.h
index 15f2b2e24..38f156745 100644
--- a/kernel/drivers/bcma/bcma_private.h
+++ b/kernel/drivers/bcma/bcma_private.h
@@ -34,6 +34,7 @@ int __init bcma_bus_early_register(struct bcma_bus *bus);
int bcma_bus_suspend(struct bcma_bus *bus);
int bcma_bus_resume(struct bcma_bus *bus);
#endif
+struct device *bcma_bus_get_host_dev(struct bcma_bus *bus);
/* scan.c */
void bcma_detect_chip(struct bcma_bus *bus);
diff --git a/kernel/drivers/bcma/driver_gpio.c b/kernel/drivers/bcma/driver_gpio.c
index 74ccb02e0..504899a72 100644
--- a/kernel/drivers/bcma/driver_gpio.c
+++ b/kernel/drivers/bcma/driver_gpio.c
@@ -8,10 +8,8 @@
* Licensed under the GNU/GPL. See COPYING for details.
*/
-#include <linux/gpio.h>
-#include <linux/irq.h>
+#include <linux/gpio/driver.h>
#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
#include <linux/export.h>
#include <linux/bcma/bcma.h>
@@ -79,19 +77,11 @@ static void bcma_gpio_free(struct gpio_chip *chip, unsigned gpio)
}
#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
-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 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);
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct bcma_drv_cc *cc = bcma_gpio_get_cc(gc);
int gpio = irqd_to_hwirq(d);
u32 val = bcma_chipco_gpio_in(cc, BIT(gpio));
@@ -101,7 +91,8 @@ static void bcma_gpio_irq_unmask(struct irq_data *d)
static void bcma_gpio_irq_mask(struct irq_data *d)
{
- struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct bcma_drv_cc *cc = bcma_gpio_get_cc(gc);
int gpio = irqd_to_hwirq(d);
bcma_chipco_gpio_intmask(cc, BIT(gpio), 0);
@@ -116,6 +107,7 @@ static struct irq_chip bcma_gpio_irq_chip = {
static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
{
struct bcma_drv_cc *cc = dev_id;
+ struct gpio_chip *gc = &cc->gpio;
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);
@@ -125,81 +117,58 @@ static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
if (!irqs)
return IRQ_NONE;
- for_each_set_bit(gpio, &irqs, cc->gpio.ngpio)
- generic_handle_irq(bcma_gpio_to_irq(&cc->gpio, gpio));
+ for_each_set_bit(gpio, &irqs, gc->ngpio)
+ generic_handle_irq(irq_find_mapping(gc->irqdomain, gpio));
bcma_chipco_gpio_polarity(cc, irqs, val & irqs);
return IRQ_HANDLED;
}
-static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
+static int bcma_gpio_irq_init(struct bcma_drv_cc *cc)
{
struct gpio_chip *chip = &cc->gpio;
- int gpio, hwirq, err;
+ int 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, 0);
err = request_irq(hwirq, bcma_gpio_irq_handler, IRQF_SHARED, "gpio",
cc);
if (err)
- goto err_req_irq;
+ return err;
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);
+ err = gpiochip_irqchip_add(chip,
+ &bcma_gpio_irq_chip,
+ 0,
+ handle_simple_irq,
+ IRQ_TYPE_NONE);
+ if (err) {
+ free_irq(hwirq, cc);
+ return err;
}
- irq_domain_remove(cc->irq_domain);
-err_irq_domain:
- return err;
+
+ return 0;
}
-static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+static void bcma_gpio_irq_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, 0), 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)
+static int bcma_gpio_irq_init(struct bcma_drv_cc *cc)
{
return 0;
}
-static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+static void bcma_gpio_irq_exit(struct bcma_drv_cc *cc)
{
}
#endif
@@ -218,14 +187,14 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
chip->set = bcma_gpio_set_value;
chip->direction_input = bcma_gpio_direction_input;
chip->direction_output = bcma_gpio_direction_output;
-#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
- chip->to_irq = bcma_gpio_to_irq;
-#endif
+ chip->owner = THIS_MODULE;
+ chip->dev = bcma_bus_get_host_dev(bus);
#if IS_BUILTIN(CONFIG_OF)
if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
chip->of_node = cc->core->dev.of_node;
#endif
switch (bus->chipinfo.id) {
+ case BCMA_CHIP_ID_BCM4707:
case BCMA_CHIP_ID_BCM5357:
case BCMA_CHIP_ID_BCM53572:
chip->ngpio = 32;
@@ -235,24 +204,25 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
}
/*
- * On MIPS we register GPIO devices (LEDs, buttons) using absolute GPIO
- * pin numbers. We don't have Device Tree there and we can't really use
- * relative (per chip) numbers.
- * So let's use predictable base for BCM47XX and "random" for all other.
+ * Register SoC GPIO devices with absolute GPIO pin base.
+ * On MIPS, we don't have Device Tree and we can't use relative (per chip)
+ * GPIO numbers.
+ * On some ARM devices, user space may want to access some system GPIO
+ * pins directly, which is easier to do with a predictable GPIO base.
*/
-#if IS_BUILTIN(CONFIG_BCM47XX)
- chip->base = bus->num * BCMA_GPIO_MAX_PINS;
-#else
- chip->base = -1;
-#endif
+ if (IS_BUILTIN(CONFIG_BCM47XX) ||
+ cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
+ chip->base = bus->num * BCMA_GPIO_MAX_PINS;
+ else
+ chip->base = -1;
- err = bcma_gpio_irq_domain_init(cc);
+ err = gpiochip_add(chip);
if (err)
return err;
- err = gpiochip_add(chip);
+ err = bcma_gpio_irq_init(cc);
if (err) {
- bcma_gpio_irq_domain_exit(cc);
+ gpiochip_remove(chip);
return err;
}
@@ -261,7 +231,7 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
int bcma_gpio_unregister(struct bcma_drv_cc *cc)
{
- bcma_gpio_irq_domain_exit(cc);
+ bcma_gpio_irq_exit(cc);
gpiochip_remove(&cc->gpio);
return 0;
}
diff --git a/kernel/drivers/bcma/main.c b/kernel/drivers/bcma/main.c
index 9635f1033..59d8d0d14 100644
--- a/kernel/drivers/bcma/main.c
+++ b/kernel/drivers/bcma/main.c
@@ -7,11 +7,14 @@
#include "bcma_private.h"
#include <linux/module.h>
+#include <linux/mmc/sdio_func.h>
#include <linux/platform_device.h>
+#include <linux/pci.h>
#include <linux/bcma/bcma.h>
#include <linux/slab.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/of_platform.h>
MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
MODULE_LICENSE("GPL");
@@ -268,6 +271,28 @@ void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
}
}
+struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
+{
+ switch (bus->hosttype) {
+ case BCMA_HOSTTYPE_PCI:
+ if (bus->host_pci)
+ return &bus->host_pci->dev;
+ else
+ return NULL;
+ case BCMA_HOSTTYPE_SOC:
+ if (bus->host_pdev)
+ return &bus->host_pdev->dev;
+ else
+ return NULL;
+ case BCMA_HOSTTYPE_SDIO:
+ if (bus->host_sdio)
+ return &bus->host_sdio->dev;
+ else
+ return NULL;
+ }
+ return NULL;
+}
+
void bcma_init_bus(struct bcma_bus *bus)
{
mutex_lock(&bcma_buses_mutex);
@@ -387,6 +412,7 @@ int bcma_bus_register(struct bcma_bus *bus)
{
int err;
struct bcma_device *core;
+ struct device *dev;
/* Scan for devices (cores) */
err = bcma_bus_scan(bus);
@@ -409,6 +435,11 @@ int bcma_bus_register(struct bcma_bus *bus)
bcma_core_pci_early_init(&bus->drv_pci[0]);
}
+ dev = bcma_bus_get_host_dev(bus);
+ if (dev) {
+ of_platform_default_populate(dev->of_node, NULL, dev);
+ }
+
/* Cores providing flash access go before SPROM init */
list_for_each_entry(core, &bus->cores, list) {
if (bcma_is_core_needed_early(core->id.id))