add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/arm/mach-sa1100/hackkit.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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  * linux/arch/arm/mach-sa1100/hackkit.c
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  *
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  *
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  * This file contains all HackKit tweaks. Based on original work from
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  * Nicolas Pitre's assabet fixes
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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 version 2 as
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- * published by the Free Software Foundation.
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- *
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  */
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 #include <linux/init.h>
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 #include <linux/kernel.h>
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@@ -26,11 +22,11 @@
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 #include <linux/gpio.h>
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 #include <linux/leds.h>
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 #include <linux/platform_device.h>
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+#include <linux/pgtable.h>
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 #include <asm/mach-types.h>
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 #include <asm/setup.h>
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 #include <asm/page.h>
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-#include <asm/pgtable.h>
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 #include <asm/mach/arch.h>
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 #include <asm/mach/flash.h>
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 /* init funcs */
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 static void __init hackkit_map_io(void);
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-static u_int hackkit_get_mctrl(struct uart_port *port);
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-static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
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 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
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 /**********************************************************************
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 };
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 static struct sa1100_port_fns hackkit_port_fns __initdata = {
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-	.set_mctrl	= hackkit_set_mctrl,
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-	.get_mctrl	= hackkit_get_mctrl,
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 	.pm		= hackkit_uart_pm,
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 };
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 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
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 {
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 	/* TODO: switch on/off uart in powersave mode */
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-}
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-
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-/*
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- * Note! this can be called from IRQ context.
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- * FIXME: No modem ctrl lines yet.
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- */
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-static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
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-{
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-#if 0
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-	if (port->mapbase == _Ser1UTCR0) {
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-		u_int set = 0, clear = 0;
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-
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-		if (mctrl & TIOCM_RTS)
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-			set |= PT_CTRL2_RS1_RTS;
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-		else
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-			clear |= PT_CTRL2_RS1_RTS;
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-
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-		if (mctrl & TIOCM_DTR)
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-			set |= PT_CTRL2_RS1_DTR;
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-		else
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-			clear |= PT_CTRL2_RS1_DTR;
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-
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-		PTCTRL2_clear(clear);
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-		PTCTRL2_set(set);
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-	}
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-#endif
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-}
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-
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-static u_int hackkit_get_mctrl(struct uart_port *port)
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-{
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-	u_int ret = 0;
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-#if 0
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-	u_int irqsr = PT_IRQSR;
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-
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-	/* need 2 reads to read current value */
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-	irqsr = PT_IRQSR;
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-
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-	/* TODO: check IRQ source register for modem/com
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-	 status lines and set them correctly. */
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-#endif
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-
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-	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
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-
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-	return ret;
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 }
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 static struct mtd_partition hackkit_partitions[] = {