summaryrefslogtreecommitdiffstats
path: root/drivers/misc
diff options
context:
space:
mode:
authorTomas Winkler <tomas.winkler@intel.com>2013-01-08 22:07:30 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-09 01:40:47 +0100
commit88eb99f29c0026f4b7d7702652eb529f04c69073 (patch)
treec2e41a33c1757c77a8d1b6f39ea9030e3bc4565e /drivers/misc
parentmei: abstract host and device readieness (diff)
downloadlinux-88eb99f29c0026f4b7d7702652eb529f04c69073.tar.xz
linux-88eb99f29c0026f4b7d7702652eb529f04c69073.zip
mei: reenable mei_hcsr_set abstraction
Now when mei_hcsr_set is local to hw-me.c we can benefit form the fact that it wraps H_IS removal from the host csr. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/hw-me.c38
-rw-r--r--drivers/misc/mei/mei_dev.h1
2 files changed, 15 insertions, 24 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 49b558ddf5b5..319002797578 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -90,13 +90,10 @@ u32 mei_hcsr_read(const struct mei_device *dev)
*
* @dev: the device structure
*/
-void mei_hcsr_set(struct mei_device *dev)
+static inline void mei_hcsr_set(struct mei_device *dev, u32 hcsr)
{
-
- if ((dev->host_hw_state & H_IS) == H_IS)
- dev->host_hw_state &= ~H_IS;
- mei_reg_write(dev, H_CSR, dev->host_hw_state);
- dev->host_hw_state = mei_hcsr_read(dev);
+ hcsr &= ~H_IS;
+ mei_reg_write(dev, H_CSR, hcsr);
}
/**
@@ -120,8 +117,7 @@ void mei_enable_interrupts(struct mei_device *dev)
{
u32 hcsr = mei_hcsr_read(dev);
hcsr |= H_IE;
- hcsr &= ~H_IS;
- mei_reg_write(dev, H_CSR, hcsr);
+ mei_hcsr_set(dev, hcsr);
}
/**
@@ -133,8 +129,7 @@ void mei_disable_interrupts(struct mei_device *dev)
{
u32 hcsr = mei_hcsr_read(dev);
hcsr &= ~H_IE;
- hcsr &= ~H_IS;
- mei_reg_write(dev, H_CSR, hcsr);
+ mei_hcsr_set(dev, hcsr);
}
/**
@@ -156,16 +151,12 @@ void mei_hw_reset(struct mei_device *dev, bool intr_enable)
else
hcsr &= ~H_IE;
- hcsr &= ~H_IS;
-
- mei_reg_write(dev, H_CSR, hcsr);
- hcsr = mei_hcsr_read(dev);
+ mei_hcsr_set(dev, hcsr);
+ hcsr = mei_hcsr_read(dev) | H_IG;
hcsr &= ~H_RST;
- hcsr |= H_IG;
- hcsr &= ~H_IS;
- mei_reg_write(dev, H_CSR, hcsr);
+ mei_hcsr_set(dev, hcsr);
hcsr = mei_hcsr_read(dev);
@@ -182,7 +173,7 @@ void mei_hw_reset(struct mei_device *dev, bool intr_enable)
void mei_host_set_ready(struct mei_device *dev)
{
dev->host_hw_state |= H_IE | H_IG | H_RDY;
- mei_hcsr_set(dev);
+ mei_hcsr_set(dev, dev->host_hw_state);
}
/**
* mei_host_is_ready - check whether the host has turned ready
@@ -295,6 +286,7 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header,
unsigned long rem, dw_cnt;
unsigned long length = header->length;
u32 *reg_buf = (u32 *)buf;
+ u32 hcsr;
int i;
int empty_slots;
@@ -319,9 +311,8 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header,
mei_reg_write(dev, H_CB_WW, reg);
}
- dev->host_hw_state = mei_hcsr_read(dev);
- dev->host_hw_state |= H_IG;
- mei_hcsr_set(dev);
+ hcsr = mei_hcsr_read(dev) | H_IG;
+ mei_hcsr_set(dev, hcsr);
dev->me_hw_state = mei_mecsr_read(dev);
if (!mei_me_is_ready(dev))
return -EIO;
@@ -366,6 +357,7 @@ void mei_read_slots(struct mei_device *dev, unsigned char *buffer,
unsigned long buffer_length)
{
u32 *reg_buf = (u32 *)buffer;
+ u32 hcsr;
for (; buffer_length >= sizeof(u32); buffer_length -= sizeof(u32))
*reg_buf++ = mei_mecbrw_read(dev);
@@ -375,7 +367,7 @@ void mei_read_slots(struct mei_device *dev, unsigned char *buffer,
memcpy(reg_buf, &reg, buffer_length);
}
- dev->host_hw_state |= H_IG;
- mei_hcsr_set(dev);
+ hcsr = mei_hcsr_read(dev) | H_IG;
+ mei_hcsr_set(dev, hcsr);
}
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 7b4365952be5..ae4c5ffc712b 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -387,7 +387,6 @@ void mei_watchdog_unregister(struct mei_device *dev);
void mei_hw_reset(struct mei_device *dev, bool intr_enable);
u32 mei_hcsr_read(const struct mei_device *dev);
-void mei_hcsr_set(struct mei_device *dev);
u32 mei_mecsr_read(const struct mei_device *dev);
u32 mei_mecbrw_read(const struct mei_device *dev);