linux-kernel - Re: [PATCH 2/2] PCI: xilinx-cpm: Add support for Versal CPM5 Root Port controller-1

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Message-ID: <e2f45f58-621f-4390-9595-723c3e829b05@kernel.org>
Date: Fri, 6 Sep 2024 11:56:23 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Thippeswamy Havalige <thippesw@....com>,
 manivannan.sadhasivam@...aro.org, robh@...nel.org,
 linux-pci@...r.kernel.org, bhelgaas@...gle.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 krzk+dt@...nel.org, conor+dt@...nel.org, devicetree@...r.kernel.org
Cc: bharat.kumar.gogada@....com, michal.simek@....com, lpieralisi@...nel.org,
 kw@...ux.com
Subject: Re: [PATCH 2/2] PCI: xilinx-cpm: Add support for Versal CPM5 Root
 Port controller-1

On 06/09/2024 11:31, Thippeswamy Havalige wrote:
> In the CPM5, controller-1 has platform-specific error interrupt bits
> located at different offsets compared to controller-0.
> 
> Signed-off-by: Thippeswamy Havalige <thippesw@....com>
> ---
>  drivers/pci/controller/pcie-xilinx-cpm.c | 39 +++++++++++++++++++-----
>  1 file changed, 32 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/controller/pcie-xilinx-cpm.c
> index a0f5e1d67b04..d672f620bc4c 100644
> --- a/drivers/pci/controller/pcie-xilinx-cpm.c
> +++ b/drivers/pci/controller/pcie-xilinx-cpm.c
> @@ -30,10 +30,13 @@
>  #define XILINX_CPM_PCIE_REG_IDRN_MASK	0x00000E3C
>  #define XILINX_CPM_PCIE_MISC_IR_STATUS	0x00000340
>  #define XILINX_CPM_PCIE_MISC_IR_ENABLE	0x00000348
> -#define XILINX_CPM_PCIE_MISC_IR_LOCAL	BIT(1)
> +#define XILINX_CPM_PCIE0_MISC_IR_LOCAL	BIT(1)
> +#define XILINX_CPM_PCIE1_MISC_IR_LOCAL	BIT(2)
>  
> -#define XILINX_CPM_PCIE_IR_STATUS       0x000002A0
> -#define XILINX_CPM_PCIE_IR_ENABLE       0x000002A8
> +#define XILINX_CPM_PCIE0_IR_STATUS       0x000002A0
> +#define XILINX_CPM_PCIE1_IR_STATUS       0x000002B4
> +#define XILINX_CPM_PCIE0_IR_ENABLE       0x000002A8
> +#define XILINX_CPM_PCIE1_IR_ENABLE       0x000002BC
>  #define XILINX_CPM_PCIE_IR_LOCAL        BIT(0)
>  
>  #define IMR(x) BIT(XILINX_PCIE_INTR_ ##x)
> @@ -280,10 +283,17 @@ static void xilinx_cpm_pcie_event_flow(struct irq_desc *desc)
>  	pcie_write(port, val, XILINX_CPM_PCIE_REG_IDR);
>  
>  	if (port->variant->version == CPM5) {
> -		val = readl_relaxed(port->cpm_base + XILINX_CPM_PCIE_IR_STATUS);
> +		val = readl_relaxed(port->cpm_base + XILINX_CPM_PCIE0_IR_STATUS);
>  		if (val)
>  			writel_relaxed(val, port->cpm_base +
> -					    XILINX_CPM_PCIE_IR_STATUS);
> +					    XILINX_CPM_PCIE0_IR_STATUS);
> +	}
> +

There are no blank lines allowed between arms of conditional statements.
Please follow coding style. This case is explained there.

Best regards,
Krzysztof