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Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/arch-lpc32xx.c
===================================================================
--- linux-2.6.27.8.orig/arch/arm/mach-lpc32xx/arch-lpc32xx.c 2011-03-01 16:09:18.000000000 +0100
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/arch-lpc32xx.c 2011-03-01 16:13:03.165618120 +0100
@@ -342,6 +342,9 @@
tmp |= UART_UART6_IRDAMOD_BYPASS;
#endif
__raw_writel(tmp, UARTCTL_CTRL(io_p2v(UART_CTRL_BASE)));
+#if defined(CONFIG_SPWM_LPC32XX)
+ lpc32xx_spwm_init();
+#endif
}
static struct map_desc lpc32xx_io_desc[] __initdata = {
Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/include/mach/lpc32xx_pwm.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/include/mach/lpc32xx_pwm.h 2011-03-01 16:13:03.165618120 +0100
@@ -0,0 +1,31 @@
+/*
+ * linux/arch/arm/mach-lpc32xx/include/mach/lpc32xx_pwm.h
+ *
+ * Copyright (C) 2009 Fontys University of Applied Sciences, Eindhoven
+ * Laurens Timmermans <l.timmermans@fontys.nl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef LPC32XX_PWM_H
+#define LPC32XX_PWM_H
+
+#define PWM1 0
+#define PWM2 1
+
+#define RTC_CLK 0x00
+#define PERIPH_CLK 0x01
+
+#endif
Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/Kconfig
===================================================================
--- linux-2.6.27.8.orig/arch/arm/mach-lpc32xx/Kconfig 2011-03-01 16:09:19.000000000 +0100
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/Kconfig 2011-03-01 16:13:03.165618120 +0100
@@ -185,6 +185,12 @@
which support is selected, the ethernet interface driver needs to be
selected in the device driver networking section.
+config SPWM_LPC32XX
+ bool "SPWM"
+ default FALSE
+ help
+ Enable simple-PWM support
+
menu "Standard UARTS"
config MACH_LPC32XX_UART5_ENABLE
Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/Makefile
===================================================================
--- linux-2.6.27.8.orig/arch/arm/mach-lpc32xx/Makefile 2011-03-01 16:09:19.000000000 +0100
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/Makefile 2011-03-01 16:13:03.165618120 +0100
@@ -7,6 +7,7 @@
obj-y := timer-lpc32xx.o irq-lpc32xx.o arch-lpc32xx.o
obj-y += serial-lpc32xx.o clocks-lpc32xx.o
obj-y += dma-lpc32xx.o uid-lpc32xx.o
+obj-y += spwm-lpc32xx.o
obj-m :=
obj-n :=
obj- :=
Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/spwm-lpc32xx.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/spwm-lpc32xx.c 2011-03-01 16:13:03.168953120 +0100
@@ -0,0 +1,126 @@
+/*
+ * linux/arch/arm/mach-lpc32xx/spwm-lpc32xx.c
+ *
+ * Copyright (C) 2009 Fontys University of Applied Sciences, Eindhoven
+ * Laurens Timmermans <l.timmermans@fontys.nl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include <mach/lpc32xx_clkpwr.h>
+#include <mach/lpc32xx_pwm.h>
+#include "sys-lpc32xx.h"
+
+#define MAX_PWM 1
+
+/* sets bits in w at position x of width y to value z */
+#define _BITS(w,x,y,z) (w = (w & ~(((0x01 << y)-1) << ((x+1)-y))) | ((z & ((0x01 << y)-1)) << ((x+1)-y)))
+
+#define PWM_IOBASE(x) io_p2v(PWM1_BASE + (x*4))
+
+void lpc32xx_spwm_enable(u32 ch)
+{
+ u32 pwm_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ pwm_ctrl = __raw_readl(PWM_IOBASE(ch));
+ _BITS(pwm_ctrl, 31, 0x01, 0x01);
+ __raw_writel(pwm_ctrl, PWM_IOBASE(ch));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_enable);
+
+void lpc32xx_spwm_disable(u32 ch)
+{
+ u32 pwm_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ pwm_ctrl = __raw_readl(PWM_IOBASE(ch));
+ _BITS(pwm_ctrl, 31, 0x01, 0x00);
+ __raw_writel(pwm_ctrl, PWM_IOBASE(ch));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_disable);
+
+void lpc32xx_spwm_set_dutycycle(u32 ch, u32 dutycycle)
+{
+ u32 pwm_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ pwm_ctrl = __raw_readl(PWM_IOBASE(ch));
+ _BITS(pwm_ctrl, 0x07, 0x08, dutycycle);
+ __raw_writel(pwm_ctrl, PWM_IOBASE(ch));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_set_dutycycle);
+
+void lpc32xx_spwm_set_reloadv(u32 ch, u32 reloadv)
+{
+ u32 pwm_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ pwm_ctrl = __raw_readl(PWM_IOBASE(ch));
+ _BITS(pwm_ctrl, 0x0F, 0x08, reloadv);
+ __raw_writel(pwm_ctrl, PWM_IOBASE(ch));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_set_reloadv);
+
+void lpc32xx_spwm_set_clocksource(u32 ch, u32 clk)
+{
+ u32 clk_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ clk_ctrl = __raw_readl(CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+ _BITS(clk_ctrl, (ch*2 + 1), 0x01, clk);
+ __raw_writel(clk_ctrl, CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_set_clocksource);
+
+void lpc32xx_spwm_set_clockdiv(u32 ch, u32 div)
+{
+ u32 clk_ctrl;
+
+ if(ch > MAX_PWM)
+ return;
+
+ clk_ctrl = __raw_readl(CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+ _BITS(clk_ctrl, (ch*4 + 7), 0x04, div);
+ __raw_writel(clk_ctrl, CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+}
+EXPORT_SYMBOL(lpc32xx_spwm_set_clockdiv);
+
+void __init lpc32xx_spwm_init(void)
+{
+ u32 clk_ctrl;
+
+ /* enable the clock */
+ clk_ctrl = __raw_readl(CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+ clk_ctrl |= (0x05);
+ __raw_writel(clk_ctrl, CLKPWR_PWM_CLK_CTRL(CLKPWR_IOBASE));
+
+ /* initially set clockdiv to 1 */
+ lpc32xx_spwm_set_clockdiv(PWM1, 1);
+ lpc32xx_spwm_set_clockdiv(PWM2, 1);
+}
Index: linux-2.6.27.8/arch/arm/mach-lpc32xx/sys-lpc32xx.h
===================================================================
--- linux-2.6.27.8.orig/arch/arm/mach-lpc32xx/sys-lpc32xx.h 2011-03-01 16:09:19.000000000 +0100
+++ linux-2.6.27.8/arch/arm/mach-lpc32xx/sys-lpc32xx.h 2011-03-01 16:18:36.725648119 +0100
@@ -30,7 +30,7 @@
#include <mach/board.h>
#define TIMER0_IOBASE io_p2v(TIMER0_BASE)
-#define TIMER1_IOBASE io_p2v(TIMER1_BASE)
+#define TIMER1_IOBASE io_p2v(TIMER1_BASE)
#define CLKPWR_IOBASE io_p2v(CLK_PM_BASE)
#define GPIO_IOBASE io_p2v(GPIO_BASE)
@@ -83,14 +83,17 @@
#endif
/* Chip specific structures and functions */
-extern struct platform_device serial_std_platform_device;
-extern struct platform_device serial_hspd_platform_device;
+extern struct platform_device serial_std_platform_device;
+extern struct platform_device serial_hspd_platform_device;
extern struct sys_timer lpc32xx_timer;
extern void lpc32xx_init_irq (void);
extern void serial_init(void);
extern void __init lpc32xx_init (void);
extern void __init lpc32xx_map_io(void);
extern int __init clk_init(void);
++#if defined(CONFIG_SPWM_LPC32XX)
++extern void lpc32xx_spwm_init(void);
++#endif
#endif
|
