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From: Kuppuswamy Sathyanarayanan  <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Denis Efremov <efremov@linux.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	Lukas Wunner <lukas@wunner.de>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 3/4] PCI: pciehp: Remove pciehp_set_attention_status()
Date: Tue, 27 Aug 2019 15:47:51 -0700	[thread overview]
Message-ID: <20190827224751.GE28404@skuppusw-desk.amr.corp.intel.com> (raw)
In-Reply-To: <20190819160643.27998-4-efremov@linux.com>

On Mon, Aug 19, 2019 at 07:06:42PM +0300, Denis Efremov wrote:
> Remove pciehp_set_attention_status() and use pciehp_set_indicators()
> instead, since the code is mostly the same.
> 
> Signed-off-by: Denis Efremov <efremov@linux.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> ---
>  drivers/pci/hotplug/pciehp.h      |  1 -
>  drivers/pci/hotplug/pciehp_core.c |  7 ++++++-
>  drivers/pci/hotplug/pciehp_hpc.c  | 25 -------------------------
>  include/uapi/linux/pci_regs.h     |  1 +
>  4 files changed, 7 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
> index 0e272bf3deb4..acda513f37d7 100644
> --- a/drivers/pci/hotplug/pciehp.h
> +++ b/drivers/pci/hotplug/pciehp.h
> @@ -168,7 +168,6 @@ void pciehp_power_off_slot(struct controller *ctrl);
>  void pciehp_get_power_status(struct controller *ctrl, u8 *status);
>  
>  void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn);
> -void pciehp_set_attention_status(struct controller *ctrl, u8 status);
>  void pciehp_get_latch_status(struct controller *ctrl, u8 *status);
>  int pciehp_query_power_fault(struct controller *ctrl);
>  void pciehp_green_led_on(struct controller *ctrl);
> diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
> index 6ad0d86762cb..7a86ea90ed94 100644
> --- a/drivers/pci/hotplug/pciehp_core.c
> +++ b/drivers/pci/hotplug/pciehp_core.c
> @@ -102,8 +102,13 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
>  	struct controller *ctrl = to_ctrl(hotplug_slot);
>  	struct pci_dev *pdev = ctrl->pcie->port;
>  
> +	if (status)
> +		status <<= PCI_EXP_SLTCTL_ATTN_IND_SHIFT;
> +	else
> +		status = PCI_EXP_SLTCTL_ATTN_IND_OFF;
> +
>  	pci_config_pm_runtime_get(pdev);
> -	pciehp_set_attention_status(ctrl, status);
> +	pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_NONE, status);
>  	pci_config_pm_runtime_put(pdev);
>  	return 0;
>  }
> diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
> index aa4252d11be2..8f894fd5cd27 100644
> --- a/drivers/pci/hotplug/pciehp_hpc.c
> +++ b/drivers/pci/hotplug/pciehp_hpc.c
> @@ -418,31 +418,6 @@ int pciehp_set_raw_indicator_status(struct hotplug_slot *hotplug_slot,
>  	return 0;
>  }
>  
> -void pciehp_set_attention_status(struct controller *ctrl, u8 value)
> -{
> -	u16 slot_cmd;
> -
> -	if (!ATTN_LED(ctrl))
> -		return;
> -
> -	switch (value) {
> -	case 0:		/* turn off */
> -		slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_OFF;
> -		break;
> -	case 1:		/* turn on */
> -		slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_ON;
> -		break;
> -	case 2:		/* turn blink */
> -		slot_cmd = PCI_EXP_SLTCTL_ATTN_IND_BLINK;
> -		break;
> -	default:
> -		return;
> -	}
> -	pcie_write_cmd_nowait(ctrl, slot_cmd, PCI_EXP_SLTCTL_AIC);
> -	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
> -		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
> -}
> -
>  void pciehp_set_indicators(struct controller *ctrl, int pwr, int attn)
>  {
>  	u16 cmd = 0, mask = 0;
> diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
> index 291788b58f3a..27d9f5bc1812 100644
> --- a/include/uapi/linux/pci_regs.h
> +++ b/include/uapi/linux/pci_regs.h
> @@ -591,6 +591,7 @@
>  #define  PCI_EXP_SLTCTL_CCIE	0x0010	/* Command Completed Interrupt Enable */
>  #define  PCI_EXP_SLTCTL_HPIE	0x0020	/* Hot-Plug Interrupt Enable */
>  #define  PCI_EXP_SLTCTL_AIC	0x00c0	/* Attention Indicator Control */
> +#define  PCI_EXP_SLTCTL_ATTN_IND_SHIFT 6      /* Attention Indicator shift */
>  #define  PCI_EXP_SLTCTL_ATTN_IND_NONE  0x0    /* Attention Indicator noop */
>  #define  PCI_EXP_SLTCTL_ATTN_IND_ON    0x0040 /* Attention Indicator on */
>  #define  PCI_EXP_SLTCTL_ATTN_IND_BLINK 0x0080 /* Attention Indicator blinking */
> -- 
> 2.21.0
> 

-- 
-- 
Sathyanarayanan Kuppuswamy
Linux kernel developer

  reply	other threads:[~2019-08-27 22:50 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-19 16:06 [PATCH v3 0/4] Simplify PCIe hotplug indicator control Denis Efremov
2019-08-19 16:06 ` [PATCH v3 1/4] PCI: pciehp: Add pciehp_set_indicators() to jointly set LED indicators Denis Efremov
2019-08-19 16:16   ` Denis Efremov
2019-08-27 23:24     ` Oliver O'Halloran
2019-08-21 23:58   ` Kuppuswamy Sathyanarayanan
2019-08-27 23:41   ` Oliver O'Halloran
2019-08-19 16:06 ` [PATCH v3 2/4] PCI: pciehp: Switch LED indicators with a single write Denis Efremov
2019-08-27 22:36   ` Kuppuswamy Sathyanarayanan
2019-08-19 16:06 ` [PATCH v3 3/4] PCI: pciehp: Remove pciehp_set_attention_status() Denis Efremov
2019-08-27 22:47   ` Kuppuswamy Sathyanarayanan [this message]
2019-08-19 16:06 ` [PATCH v3 4/4] PCI: pciehp: Remove pciehp_green_led_{on,off,blink}() Denis Efremov
2019-08-27 22:49   ` Kuppuswamy Sathyanarayanan
2019-08-27 23:49   ` Oliver O'Halloran
2019-08-20 12:16 ` [PATCH v3 0/4] Simplify PCIe hotplug indicator control Denis Efremov
2019-08-27 22:32   ` Bjorn Helgaas
2019-08-27 22:50     ` Kuppuswamy Sathyanarayanan
2019-08-27 22:53     ` Bjorn Helgaas
2019-08-28  3:33       ` Lukas Wunner

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