add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/lpc_sch.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  lpc_sch.c - LPC interface for Intel Poulsbo SCH
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  *
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@@ -9,15 +10,6 @@
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  *  Copyright (c) 2010 CompuLab Ltd
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  *  Copyright (c) 2014 Intel Corp.
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  *  Author: Denis Turischev <denis@compulab.co.il>
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License 2 as published
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- *  by the Free Software Foundation.
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- *
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- *  This program is distributed in the hope that it will be useful,
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- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *  GNU General Public License for more details.
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  */
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14
 
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 #include <linux/kernel.h>
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@@ -30,12 +22,9 @@
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 #define SMBASE		0x40
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 #define SMBUS_IO_SIZE	64
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-#define GPIOBASE	0x44
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+#define GPIO_BASE	0x44
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 #define GPIO_IO_SIZE	64
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 #define GPIO_IO_SIZE_CENTERTON	128
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-
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-/* Intel Quark X1000 GPIO IRQ Number */
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-#define GPIO_IRQ_QUARK_X1000	9
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 #define WDTBASE		0x84
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 #define WDT_IO_SIZE	64
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@@ -51,30 +40,25 @@
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 	unsigned int io_size_smbus;
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 	unsigned int io_size_gpio;
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 	unsigned int io_size_wdt;
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-	int irq_gpio;
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 };
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 static struct lpc_sch_info sch_chipset_info[] = {
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 	[LPC_SCH] = {
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 		.io_size_smbus = SMBUS_IO_SIZE,
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 		.io_size_gpio = GPIO_IO_SIZE,
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-		.irq_gpio = -1,
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 	},
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 	[LPC_ITC] = {
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 		.io_size_smbus = SMBUS_IO_SIZE,
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 		.io_size_gpio = GPIO_IO_SIZE,
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 		.io_size_wdt = WDT_IO_SIZE,
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-		.irq_gpio = -1,
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 	},
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 	[LPC_CENTERTON] = {
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 		.io_size_smbus = SMBUS_IO_SIZE,
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 		.io_size_gpio = GPIO_IO_SIZE_CENTERTON,
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 		.io_size_wdt = WDT_IO_SIZE,
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-		.irq_gpio = -1,
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 	},
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 	[LPC_QUARK_X1000] = {
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 		.io_size_gpio = GPIO_IO_SIZE,
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-		.irq_gpio = GPIO_IRQ_QUARK_X1000,
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 		.io_size_wdt = WDT_IO_SIZE,
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 	},
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 };
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@@ -121,13 +105,13 @@
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 }
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 static int lpc_sch_populate_cell(struct pci_dev *pdev, int where,
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-				 const char *name, int size, int irq,
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-				 int id, struct mfd_cell *cell)
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+				 const char *name, int size, int id,
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+				 struct mfd_cell *cell)
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 {
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 	struct resource *res;
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 	int ret;
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-	res = devm_kcalloc(&pdev->dev, 2, sizeof(*res), GFP_KERNEL);
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+	res = devm_kzalloc(&pdev->dev, sizeof(*res), GFP_KERNEL);
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 	if (!res)
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 		return -ENOMEM;
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@@ -143,18 +127,6 @@
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 	cell->ignore_resource_conflicts = true;
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 	cell->id = id;
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-	/* Check if we need to add an IRQ resource */
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-	if (irq < 0)
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-		return 0;
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-
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-	res++;
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-
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-	res->start = irq;
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-	res->end = irq;
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-	res->flags = IORESOURCE_IRQ;
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-
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-	cell->num_resources++;
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-
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 	return 0;
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 }
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@@ -166,15 +138,15 @@
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 	int ret;
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 	ret = lpc_sch_populate_cell(dev, SMBASE, "isch_smbus",
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-				    info->io_size_smbus, -1,
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+				    info->io_size_smbus,
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 				    id->device, &lpc_sch_cells[cells]);
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 	if (ret < 0)
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 		return ret;
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 	if (ret == 0)
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 		cells++;
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-	ret = lpc_sch_populate_cell(dev, GPIOBASE, "sch_gpio",
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-				    info->io_size_gpio, info->irq_gpio,
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+	ret = lpc_sch_populate_cell(dev, GPIO_BASE, "sch_gpio",
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+				    info->io_size_gpio,
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 				    id->device, &lpc_sch_cells[cells]);
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 	if (ret < 0)
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 		return ret;
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@@ -182,7 +154,7 @@
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 		cells++;
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 	ret = lpc_sch_populate_cell(dev, WDTBASE, "ie6xx_wdt",
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-				    info->io_size_wdt, -1,
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+				    info->io_size_wdt,
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 				    id->device, &lpc_sch_cells[cells]);
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 	if (ret < 0)
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 		return ret;