diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2013-01-08 23:07:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-08 16:40:47 -0800 |
| commit | e7e0c231aaa7a01df28634390381974cb76d3cb2 (patch) | |
| tree | e6a2233958265dc3efc649563de50fc4e1605b38 /drivers/misc/mei/hw-me.c | |
| parent | 88eb99f29c0026f4b7d7702652eb529f04c69073 (diff) | |
mei: make host csr and me csr internal to hw-me
Move csr reading into me hardware functional calls.
Since we gave up on registers caching we remove some of the unnecessary
queries in mei_hw_init ane mei_reset functions.
We add mei_hw_config function to wrap up host buffer depth configuration.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 31900279757..93a2a56a5f2 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -67,7 +67,7 @@ u32 mei_mecbrw_read(const struct mei_device *dev) * * returns ME_CSR_HA register value (u32) */ -u32 mei_mecsr_read(const struct mei_device *dev) +static inline u32 mei_mecsr_read(const struct mei_device *dev) { return mei_reg_read(dev, ME_CSR_HA); } @@ -79,7 +79,7 @@ u32 mei_mecsr_read(const struct mei_device *dev) * * returns H_CSR register value (u32) */ -u32 mei_hcsr_read(const struct mei_device *dev) +static inline u32 mei_hcsr_read(const struct mei_device *dev) { return mei_reg_read(dev, H_CSR); } @@ -96,6 +96,18 @@ static inline void mei_hcsr_set(struct mei_device *dev, u32 hcsr) mei_reg_write(dev, H_CSR, hcsr); } + +/** + * me_hw_config - configure hw dependent settings + * + * @dev: mei device + */ +void mei_hw_config(struct mei_device *dev) +{ + u32 hcsr = mei_hcsr_read(dev); + /* Doesn't change in runtime */ + dev->hbuf_depth = (hcsr & H_CBD) >> 24; +} /** * mei_clear_interrupts - clear and stop interrupts * @@ -183,6 +195,7 @@ void mei_host_set_ready(struct mei_device *dev) */ bool mei_host_is_ready(struct mei_device *dev) { + dev->host_hw_state = mei_hcsr_read(dev); return (dev->host_hw_state & H_RDY) == H_RDY; } @@ -194,6 +207,7 @@ bool mei_host_is_ready(struct mei_device *dev) */ bool mei_me_is_ready(struct mei_device *dev) { + dev->me_hw_state = mei_mecsr_read(dev); return (dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA; } @@ -313,7 +327,6 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header, 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; |