Add dstate host op for MHI EPF.
Signed-off-by: Krishna chaitanya chundru <[email protected]>
---
drivers/pci/endpoint/functions/pci-epf-mhi.c | 13 +++++++++++++
include/linux/mhi_ep.h | 3 +++
2 files changed, 16 insertions(+)
diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index 9c1f5a1..64ff37d 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -339,6 +339,18 @@ static int pci_epf_mhi_bme(struct pci_epf *epf)
return 0;
}
+static int pci_epf_mhi_dstate_change(struct pci_epf *epf, pci_power_t state)
+{
+ struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
+ struct mhi_ep_cntrl *mhi_cntrl = &epf_mhi->mhi_cntrl;
+ struct device *dev = &epf->dev;
+
+ mhi_cntrl->dstate = state;
+ dev_info(dev, "D-state changeg to %s\n", pci_power_name(state));
+
+ return 0;
+}
+
static int pci_epf_mhi_bind(struct pci_epf *epf)
{
struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
@@ -394,6 +406,7 @@ static struct pci_epc_event_ops pci_epf_mhi_event_ops = {
.link_up = pci_epf_mhi_link_up,
.link_down = pci_epf_mhi_link_down,
.bme = pci_epf_mhi_bme,
+ .dstate_change = pci_epf_mhi_dstate_change,
};
static int pci_epf_mhi_probe(struct pci_epf *epf,
diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h
index f198a8a..c3a0685 100644
--- a/include/linux/mhi_ep.h
+++ b/include/linux/mhi_ep.h
@@ -8,6 +8,7 @@
#include <linux/dma-direction.h>
#include <linux/mhi.h>
+#include <linux/pci.h>
#define MHI_EP_DEFAULT_MTU 0x8000
@@ -139,6 +140,8 @@ struct mhi_ep_cntrl {
enum mhi_state mhi_state;
+ pci_power_t dstate;
+
u32 max_chan;
u32 mru;
u32 event_rings;
--
2.7.4
On Fri, Jun 30, 2023 at 04:22:06PM +0530, Krishna chaitanya chundru wrote:
> Add dstate host op for MHI EPF.
>
Use "D-state" everywhere. Also the subject should be:
"PCI: epf-mhi: Add support for handling D-state notification from EPC"
Fix the commit message accordingly.
> Signed-off-by: Krishna chaitanya chundru <[email protected]>
> ---
> drivers/pci/endpoint/functions/pci-epf-mhi.c | 13 +++++++++++++
> include/linux/mhi_ep.h | 3 +++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
> index 9c1f5a1..64ff37d 100644
> --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
> +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
> @@ -339,6 +339,18 @@ static int pci_epf_mhi_bme(struct pci_epf *epf)
> return 0;
> }
>
> +static int pci_epf_mhi_dstate_change(struct pci_epf *epf, pci_power_t state)
> +{
> + struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
> + struct mhi_ep_cntrl *mhi_cntrl = &epf_mhi->mhi_cntrl;
> + struct device *dev = &epf->dev;
> +
> + mhi_cntrl->dstate = state;
> + dev_info(dev, "D-state changeg to %s\n", pci_power_name(state));
This can be removed since we already print the state in pci driver.
- Mani
> +
> + return 0;
> +}
> +
> static int pci_epf_mhi_bind(struct pci_epf *epf)
> {
> struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
> @@ -394,6 +406,7 @@ static struct pci_epc_event_ops pci_epf_mhi_event_ops = {
> .link_up = pci_epf_mhi_link_up,
> .link_down = pci_epf_mhi_link_down,
> .bme = pci_epf_mhi_bme,
> + .dstate_change = pci_epf_mhi_dstate_change,
> };
>
> static int pci_epf_mhi_probe(struct pci_epf *epf,
> diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h
> index f198a8a..c3a0685 100644
> --- a/include/linux/mhi_ep.h
> +++ b/include/linux/mhi_ep.h
> @@ -8,6 +8,7 @@
>
> #include <linux/dma-direction.h>
> #include <linux/mhi.h>
> +#include <linux/pci.h>
>
> #define MHI_EP_DEFAULT_MTU 0x8000
>
> @@ -139,6 +140,8 @@ struct mhi_ep_cntrl {
>
> enum mhi_state mhi_state;
>
> + pci_power_t dstate;
> +
> u32 max_chan;
> u32 mru;
> u32 event_rings;
> --
> 2.7.4
>
--
மணிவண்ணன் சதாசிவம்
On 7/7/2023 11:29 AM, Manivannan Sadhasivam wrote:
> On Fri, Jun 30, 2023 at 04:22:06PM +0530, Krishna chaitanya chundru wrote:
>> Add dstate host op for MHI EPF.
>>
> Use "D-state" everywhere. Also the subject should be:
>
> "PCI: epf-mhi: Add support for handling D-state notification from EPC"
>
> Fix the commit message accordingly.
I will change it as you suggested.
>
>> Signed-off-by: Krishna chaitanya chundru <[email protected]>
>> ---
>> drivers/pci/endpoint/functions/pci-epf-mhi.c | 13 +++++++++++++
>> include/linux/mhi_ep.h | 3 +++
>> 2 files changed, 16 insertions(+)
>>
>> diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
>> index 9c1f5a1..64ff37d 100644
>> --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
>> +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
>> @@ -339,6 +339,18 @@ static int pci_epf_mhi_bme(struct pci_epf *epf)
>> return 0;
>> }
>>
>> +static int pci_epf_mhi_dstate_change(struct pci_epf *epf, pci_power_t state)
>> +{
>> + struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
>> + struct mhi_ep_cntrl *mhi_cntrl = &epf_mhi->mhi_cntrl;
>> + struct device *dev = &epf->dev;
>> +
>> + mhi_cntrl->dstate = state;
>> + dev_info(dev, "D-state changeg to %s\n", pci_power_name(state));
> This can be removed since we already print the state in pci driver.
>
> - Mani
ok
- KC
>
>> +
>> + return 0;
>> +}
>> +
>> static int pci_epf_mhi_bind(struct pci_epf *epf)
>> {
>> struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
>> @@ -394,6 +406,7 @@ static struct pci_epc_event_ops pci_epf_mhi_event_ops = {
>> .link_up = pci_epf_mhi_link_up,
>> .link_down = pci_epf_mhi_link_down,
>> .bme = pci_epf_mhi_bme,
>> + .dstate_change = pci_epf_mhi_dstate_change,
>> };
>>
>> static int pci_epf_mhi_probe(struct pci_epf *epf,
>> diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h
>> index f198a8a..c3a0685 100644
>> --- a/include/linux/mhi_ep.h
>> +++ b/include/linux/mhi_ep.h
>> @@ -8,6 +8,7 @@
>>
>> #include <linux/dma-direction.h>
>> #include <linux/mhi.h>
>> +#include <linux/pci.h>
>>
>> #define MHI_EP_DEFAULT_MTU 0x8000
>>
>> @@ -139,6 +140,8 @@ struct mhi_ep_cntrl {
>>
>> enum mhi_state mhi_state;
>>
>> + pci_power_t dstate;
>> +
>> u32 max_chan;
>> u32 mru;
>> u32 event_rings;
>> --
>> 2.7.4
>>