linux-kernel - [PATCH v4 3/4] PCI: pciehp: Remove pciehp_set_attention

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Message-Id: <20190903111021.1559-4-efremov@linux.com>
Date:   Tue,  3 Sep 2019 14:10:20 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Denis Efremov <efremov@...ux.com>, Lukas Wunner <lukas@...ner.de>,
        linux-pci@...r.kernel.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Oliver O'Halloran <oohall@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/4] PCI: pciehp: Remove pciehp_set_attention_status()

Remove pciehp_set_attention_status() and use pciehp_set_indicators()
instead, since the code is mostly the same.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
Signed-off-by: Denis Efremov <efremov@...ux.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 0214e09e91a4..cf59f70a33cc 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -172,7 +172,6 @@ void pciehp_get_power_status(struct controller *ctrl, u8 *status);
 #define PCI_EXP_SLTCTL_PWR_IND_NONE  -1 /* Power Indicator noop */
 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 d2c60d844d30..eeac2e704c75 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 f28e562d7ca8..de3e58afc564 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_ON    0x0040 /* Attention Indicator on */
 #define  PCI_EXP_SLTCTL_ATTN_IND_BLINK 0x0080 /* Attention Indicator blinking */
 #define  PCI_EXP_SLTCTL_ATTN_IND_OFF   0x00c0 /* Attention Indicator off */
-- 
2.21.0