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Date: Wed, 05 Oct 2011 15:45:15 +1100
From: Nathan Williams <nathan@...verse.com.au>
To: netdev@...r.kernel.org
Cc: linux-atm-general@...ts.sourceforge.net,
David Woodhouse <dwmw2@...radead.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] atm: solos-pci: Add support for Geos GPIO pins
Geos ADSL2+ routers have on-board Solos chipsets with some
extra I/O pins and a push button connected to the FPGA.
PCB version and variant numbers are also made available
through the HardwareVersion and HardwareVariant attributes.
Signed-off-by: Nathan Williams <nathan@...verse.com.au>
---
drivers/atm/solos-pci.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index bd01aa3..33c0c2b 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -56,6 +56,7 @@
#define FLASH_BUSY 0x60
#define FPGA_MODE 0x5C
#define FLASH_MODE 0x58
+#define GPIO_STATUS 0x54
#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
@@ -498,6 +499,87 @@ static ssize_t console_store(struct device *dev, struct device_attribute *attr,
return err?:count;
}
+struct geos_gpio {
+ char *name;
+ int offset;
+};
+
+static struct geos_gpio geos_gpio_pins[] = {
+ {"GPIO1", 9},
+ {"GPIO2", 10},
+ {"GPIO3", 11},
+ {"GPIO4", 12},
+ {"GPIO5", 13},
+ {"PushButton", 14},
+ {NULL, 0}
+};
+
+static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
+ struct solos_card *card = atmdev->dev_data;
+ uint32_t data32;
+
+ struct geos_gpio *p = geos_gpio_pins;
+ while(p->name){
+ if(!strcmp(attr->attr.name, p->name)){
+ break;
+ }
+ p++;
+ }
+
+ data32 = ioread32(card->config_regs + GPIO_STATUS);
+ if(buf[0] == '1'){
+ data32 |= 1 << p->offset;
+ iowrite32(data32, card->config_regs + GPIO_STATUS);
+ } else if(buf[0] == '0') {
+ data32 &= ~(1 << p->offset);
+ iowrite32(data32, card->config_regs + GPIO_STATUS);
+ }
+ return count;
+}
+
+static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
+ struct solos_card *card = atmdev->dev_data;
+ uint32_t data32;
+
+ struct geos_gpio *p = geos_gpio_pins;
+ while(p->name){
+ if(!strcmp(attr->attr.name, p->name)){
+ break;
+ }
+ p++;
+ }
+
+ data32 = ioread32(card->config_regs + GPIO_STATUS);
+ data32 = (data32 >> p->offset) & 1;
+
+ return sprintf(buf, "%d\n", data32);
+}
+
+static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
+ struct solos_card *card = atmdev->dev_data;
+ uint32_t data32;
+
+ data32 = ioread32(card->config_regs + GPIO_STATUS);
+ if(!strcmp(attr->attr.name, "HardwareVersion")){
+ data32 = data32 & 0x1F;
+ return sprintf(buf, "%d\n", data32);
+ } else if(!strcmp(attr->attr.name, "HardwareVariant")){
+ data32 = (data32 >> 5) & 0x0F;
+ return sprintf(buf, "%d\n", data32);
+ }
+
+ return sprintf(buf, "Error\n");
+}
+
static DEVICE_ATTR(console, 0644, console_show, console_store);
@@ -506,6 +588,14 @@ static DEVICE_ATTR(console, 0644, console_show, console_store);
#include "solos-attrlist.c"
+static DEVICE_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store);
+static DEVICE_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store);
+static DEVICE_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store);
+static DEVICE_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store);
+static DEVICE_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store);
+static DEVICE_ATTR(PushButton, 0444, geos_gpio_show, NULL);
+static DEVICE_ATTR(HardwareVersion, 0444, hardware_show, NULL);
+static DEVICE_ATTR(HardwareVariant, 0444, hardware_show, NULL);
#undef SOLOS_ATTR_RO
#undef SOLOS_ATTR_RW
@@ -514,6 +604,14 @@ static DEVICE_ATTR(console, 0644, console_show, console_store);
static struct attribute *solos_attrs[] = {
#include "solos-attrlist.c"
+ &dev_attr_GPIO1.attr,
+ &dev_attr_GPIO2.attr,
+ &dev_attr_GPIO3.attr,
+ &dev_attr_GPIO4.attr,
+ &dev_attr_GPIO5.attr,
+ &dev_attr_PushButton.attr,
+ &dev_attr_HardwareVersion.attr,
+ &dev_attr_HardwareVariant.attr,
NULL
};
--
1.7.2.5
--
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