linux-kernel - [PATCH v1 1/1] serial: 8250_exar: derive nr

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Date:   Wed, 22 Dec 2021 21:44:13 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Subject: [PATCH v1 1/1] serial: 8250_exar: derive nr_ports from ID for Acces I/O cards

In the similar way how it's done in 8250_pericom, derive number of
UART ports from PCI ID for Acces I/O cards.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/tty/serial/8250/8250_exar.c | 37 ++++++++++-------------------
 1 file changed, 13 insertions(+), 24 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index a4508ac0cac9..cf16bd889abd 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -611,7 +611,12 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 
 	maxnr = pci_resource_len(pcidev, bar) >> (board->reg_shift + 3);
 
-	nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f;
+	if (pcidev->vendor == PCI_VENDOR_ID_ACCESSIO)
+		nr = BIT(((pcidev->device & 0x38) >> 3) - 1);
+	else if (board->num_ports)
+		nr_ports = board->num_ports;
+	else
+		nr_ports = pcidev->device & 0x0f;
 
 	priv = devm_kzalloc(&pcidev->dev, struct_size(priv, line, nr_ports), GFP_KERNEL);
 	if (!priv)
@@ -710,22 +715,6 @@ static int __maybe_unused exar_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(exar_pci_pm, exar_suspend, exar_resume);
 
-static const struct exar8250_board acces_com_2x = {
-	.num_ports	= 2,
-	.setup		= pci_xr17c154_setup,
-};
-
-static const struct exar8250_board acces_com_4x = {
-	.num_ports	= 4,
-	.setup		= pci_xr17c154_setup,
-};
-
-static const struct exar8250_board acces_com_8x = {
-	.num_ports	= 8,
-	.setup		= pci_xr17c154_setup,
-};
-
-
 static const struct exar8250_board pbn_fastcom335_2 = {
 	.num_ports	= 2,
 	.setup		= pci_fastcom335_setup,
@@ -810,13 +799,13 @@ static const struct exar8250_board pbn_exar_XR17V8358 = {
 	}
 
 static const struct pci_device_id exar_pci_tbl[] = {
-	EXAR_DEVICE(ACCESSIO, COM_2S, acces_com_2x),
-	EXAR_DEVICE(ACCESSIO, COM_4S, acces_com_4x),
-	EXAR_DEVICE(ACCESSIO, COM_8S, acces_com_8x),
-	EXAR_DEVICE(ACCESSIO, COM232_8, acces_com_8x),
-	EXAR_DEVICE(ACCESSIO, COM_2SM, acces_com_2x),
-	EXAR_DEVICE(ACCESSIO, COM_4SM, acces_com_4x),
-	EXAR_DEVICE(ACCESSIO, COM_8SM, acces_com_8x),
+	EXAR_DEVICE(ACCESSIO, COM_2S, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM_4S, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM_8S, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM232_8, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM_2SM, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM_4SM, pbn_exar_XR17C15x),
+	EXAR_DEVICE(ACCESSIO, COM_8SM, pbn_exar_XR17C15x),
 
 	CONNECT_DEVICE(XR17C152, UART_2_232, pbn_connect),
 	CONNECT_DEVICE(XR17C154, UART_4_232, pbn_connect),
-- 
2.34.1