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Date: Mon, 10 Sep 2012 10:51:41 +0200
From: Samuel Iglesias Gonsálvez
<siglesias@...lia.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
industrypack-devel@...ts.sourceforge.net,
Jens Taprogge <jens.taprogge@...rogge.org>,
Samuel Iglesias Gonsálvez
<siglesias@...lia.com>
Subject: [PATCH 03/20] Staging: ipack/bridges/tpci200: provide new callbacks to tpci200
From: Jens Taprogge <jens.taprogge@...rogge.org>
Provide get_clockrate, set_clockrate, get_error, get_timeout and reset_timeout
callbacks.
Signed-off-by: Jens Taprogge <jens.taprogge@...rogge.org>
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@...lia.com>
---
drivers/staging/ipack/bridges/tpci200.c | 107 +++++++++++++++++++++++++++++++
1 file changed, 107 insertions(+)
diff --git a/drivers/staging/ipack/bridges/tpci200.c b/drivers/staging/ipack/bridges/tpci200.c
index 4383953..861b00d 100644
--- a/drivers/staging/ipack/bridges/tpci200.c
+++ b/drivers/staging/ipack/bridges/tpci200.c
@@ -14,6 +14,20 @@
#include <linux/module.h>
#include "tpci200.h"
+static u16 tpci200_status_timeout[] = {
+ TPCI200_A_TIMEOUT,
+ TPCI200_B_TIMEOUT,
+ TPCI200_C_TIMEOUT,
+ TPCI200_D_TIMEOUT,
+};
+
+static u16 tpci200_status_error[] = {
+ TPCI200_A_ERROR,
+ TPCI200_B_ERROR,
+ TPCI200_C_ERROR,
+ TPCI200_D_ERROR,
+};
+
static struct ipack_bus_ops tpci200_bus_ops;
static int tpci200_slot_unregister(struct ipack_device *dev);
@@ -507,6 +521,94 @@ out_unlock:
return res;
}
+static int tpci200_get_clockrate(struct ipack_device *dev)
+{
+ struct tpci200_board *tpci200 = check_slot(dev);
+ __le16 __iomem *addr;
+
+ if (!tpci200)
+ return -ENODEV;
+
+ addr = &tpci200->info->interface_regs->control[dev->slot];
+ return (ioread16(addr) & TPCI200_CLK32) ? 32 : 8;
+}
+
+static int tpci200_set_clockrate(struct ipack_device *dev, int mherz)
+{
+ struct tpci200_board *tpci200 = check_slot(dev);
+ __le16 __iomem *addr;
+ u16 reg;
+
+ if (!tpci200)
+ return -ENODEV;
+
+ addr = &tpci200->info->interface_regs->control[dev->slot];
+
+ /* Ensure the control register is not changed by another task after we
+ * have read it. */
+ mutex_lock(&tpci200->mutex);
+ reg = ioread16(addr);
+ switch (mherz) {
+ case 8:
+ reg &= ~(TPCI200_CLK32); break;
+ case 32:
+ reg |= TPCI200_CLK32; break;
+ default:
+ mutex_unlock(&tpci200->mutex);
+ return -EINVAL;
+ }
+ iowrite16(reg, addr);
+ mutex_unlock(&tpci200->mutex);
+ return 0;
+}
+
+static int tpci200_get_error(struct ipack_device *dev)
+{
+ struct tpci200_board *tpci200 = check_slot(dev);
+ __le16 __iomem *addr;
+ u16 mask;
+
+ if (!tpci200)
+ return -ENODEV;
+
+ addr = &tpci200->info->interface_regs->status;
+ mask = tpci200_status_error[dev->slot];
+ return (ioread16(addr) & mask) ? 1 : 0;
+}
+
+static int tpci200_get_timeout(struct ipack_device *dev)
+{
+ struct tpci200_board *tpci200 = check_slot(dev);
+ __le16 __iomem *addr;
+ u16 mask;
+
+ if (!tpci200)
+ return -ENODEV;
+
+ addr = &tpci200->info->interface_regs->status;
+ mask = tpci200_status_timeout[dev->slot];
+
+ return (ioread16(addr) & mask) ? 1 : 0;
+}
+
+static int tpci200_reset_timeout(struct ipack_device *dev)
+{
+ struct tpci200_board *tpci200 = check_slot(dev);
+ __le16 __iomem *addr;
+ u16 mask;
+
+ if (!tpci200)
+ return -ENODEV;
+
+ addr = &tpci200->info->interface_regs->status;
+ mask = tpci200_status_timeout[dev->slot];
+
+ iowrite16(mask, addr);
+ return 0;
+}
+
+
+
static void tpci200_uninstall(struct tpci200_board *tpci200)
{
int i;
@@ -524,6 +626,11 @@ static struct ipack_bus_ops tpci200_bus_ops = {
.request_irq = tpci200_request_irq,
.free_irq = tpci200_free_irq,
.remove_device = tpci200_slot_unregister,
+ .get_clockrate = tpci200_get_clockrate,
+ .set_clockrate = tpci200_set_clockrate,
+ .get_error = tpci200_get_error,
+ .get_timeout = tpci200_get_timeout,
+ .reset_timeout = tpci200_reset_timeout,
};
static int tpci200_install(struct tpci200_board *tpci200)
--
1.7.10.4
--
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