[PATCH v3 2/3] PCI: designware: Add get_msi_data() to pcie_host_ops

[Mohit KUMAR DCG]

> -----Original Message-----
> From: Bjorn Helgaas [mailto:bhelgaas at google.com]
> Sent: Wednesday, September 24, 2014 4:44 AM
> To: Minghuan Lian
> Cc: linux-pci at vger.kernel.org; linux-arm-kernel at lists.infradead.org; Zang
> Roy-R61911; Hu Mingkai-B21284; Scott Wood; Yoder Stuart-B08248; Arnd
> Bergmann; Mohit KUMAR DCG; Jingoo Han
> Subject: Re: [PATCH v3 2/3] PCI: designware: Add get_msi_data() to
> pcie_host_ops
> 
> [+cc Mohit, Jingoo]
> 
> On Tue, Sep 23, 2014 at 10:28:59PM +0800, Minghuan Lian wrote:
> > The patch adds get_msi_data() for some platforms to return their
> > special MSI message data.
> >
> > Signed-off-by: Minghuan Lian <Minghuan.Lian at freescale.com>
> > ---
> > Change log:
> > v3: no change
> > v2: no change just derived from v1
> >
> >  drivers/pci/host/pcie-designware.c | 7 ++++++-
> > drivers/pci/host/pcie-designware.h | 1 +
> >  2 files changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/pci/host/pcie-designware.c
> > b/drivers/pci/host/pcie-designware.c
> > index 1c09f814..c28ca05 100644
> > --- a/drivers/pci/host/pcie-designware.c
> > +++ b/drivers/pci/host/pcie-designware.c
> > @@ -366,7 +366,12 @@ static int dw_msi_setup_irq(struct msi_chip *chip,
> struct pci_dev *pdev,
> >  	else
> >  		msg.address_lo = virt_to_phys((void *)pp->msi_data);
> >  	msg.address_hi = 0x0;
> > -	msg.data = pos;
> > +
> > +	if (pp->ops->get_msi_data)
> > +		msg.data = pp->ops->get_msi_data(pp, pos);
> > +	else
> > +		msg.data = pos;
> > +
> >  	write_msi_msg(irq, &msg);
> >
> >  	return 0;
> > diff --git a/drivers/pci/host/pcie-designware.h
> > b/drivers/pci/host/pcie-designware.h
> > index 904e40a..c625675 100644
> > --- a/drivers/pci/host/pcie-designware.h
> > +++ b/drivers/pci/host/pcie-designware.h
> > @@ -71,6 +71,7 @@ struct pcie_host_ops {
> >  	void (*msi_set_irq)(struct pcie_port *pp, int irq);
> >  	void (*msi_clear_irq)(struct pcie_port *pp, int irq);
> >  	u32 (*get_msi_addr)(struct pcie_port *pp);
> > +	u32 (*get_msi_data)(struct pcie_port *pp, int pos);
> >  	void (*scan_bus)(struct pcie_port *pp);
> >  	int (*msi_host_init)(struct pcie_port *pp, struct msi_chip *chip);
> > };
> > --
> > 1.9.1
> >
- Acked-by: Mohit KUMAR <mohit.kumar at st.com>

Thanks
Mohit