arch/m68k/q40/config.c - kernel/msm-5.4 - Gitiles

 /*
  *  arch/m68k/q40/config.c
  *
  *  Copyright (C) 1999 Richard Zidlicky
  *
  * originally based on:
  *
  *  linux/bvme/config.c
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file README.legal in the main directory of this archive
  * for more details.
  */

 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/tty.h>
 #include <linux/console.h>
 #include <linux/linkage.h>
 #include <linux/init.h>
 #include <linux/major.h>
 #include <linux/serial_reg.h>
 #include <linux/rtc.h>
 #include <linux/vt_kern.h>
 #include <linux/bcd.h>
 #include <linux/platform_device.h>

 #include <asm/io.h>
 #include <asm/rtc.h>
 #include <asm/bootinfo.h>
 #include <asm/pgtable.h>
 #include <asm/setup.h>
 #include <asm/irq.h>
 #include <asm/traps.h>
 #include <asm/machdep.h>
 #include <asm/q40_master.h>

 extern void q40_init_IRQ(void);
 static void q40_get_model(char *model);
 extern void q40_sched_init(irq_handler_t handler);

 static u32 q40_gettimeoffset(void);
 static int q40_hwclk(int, struct rtc_time *);
 static unsigned int q40_get_ss(void);
 static int q40_set_clock_mmss(unsigned long);
 static int q40_get_rtc_pll(struct rtc_pll_info *pll);
 static int q40_set_rtc_pll(struct rtc_pll_info *pll);

 extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/);

 static void q40_mem_console_write(struct console *co, const char *b,
 				  unsigned int count);

 extern int ql_ticks;

 static struct console q40_console_driver = {
 	.name	= "debug",
 	.write	= q40_mem_console_write,
 	.flags	= CON_PRINTBUFFER,
 	.index	= -1,
 };


 /* early debugging function:*/
 extern char *q40_mem_cptr; /*=(char *)0xff020000;*/
 static int _cpleft;

 static void q40_mem_console_write(struct console *co, const char *s,
 				  unsigned int count)
 {
 	const char *p = s;

 	if (count < _cpleft) {
 		while (count-- > 0) {
 			*q40_mem_cptr = *p++;
 			q40_mem_cptr += 4;
 			_cpleft--;
 		}
 	}
 }

 static int __init q40_debug_setup(char *arg)
 {
 	/* useful for early debugging stages - writes kernel messages into SRAM */
 	if (MACH_IS_Q40 && !strncmp(arg, "mem", 3)) {
 		/*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
 		_cpleft = 2000 - ((long)q40_mem_cptr-0xff020000) / 4;
 		register_console(&q40_console_driver);
 	}
 	return 0;
 }

 early_param("debug", q40_debug_setup);

 #if 0
 void printq40(char *str)
 {
 	int l = strlen(str);
 	char *p = q40_mem_cptr;

 	while (l-- > 0 && _cpleft-- > 0) {
 		*p = *str++;
 		p += 4;
 	}
 	q40_mem_cptr = p;
 }
 #endif

 static int halted;

 #ifdef CONFIG_HEARTBEAT
 static void q40_heartbeat(int on)
 {
 	if (halted)
 		return;

 	if (on)
 		Q40_LED_ON();
 	else
 		Q40_LED_OFF();
 }
 #endif

 static void q40_reset(void)
 {
         halted = 1;
         printk("\n\n*******************************************\n"
 		"Called q40_reset : press the RESET button!!\n"
 		"*******************************************\n");
 	Q40_LED_ON();
 	while (1)
 		;
 }

 static void q40_halt(void)
 {
         halted = 1;
         printk("\n\n*******************\n"
 		   "  Called q40_halt\n"
 		   "*******************\n");
 	Q40_LED_ON();
 	while (1)
 		;
 }

 static void q40_get_model(char *model)
 {
 	sprintf(model, "Q40");
 }

 static unsigned int serports[] =
 {
 	0x3f8,0x2f8,0x3e8,0x2e8,0
 };

 static void q40_disable_irqs(void)
 {
 	unsigned i, j;

 	j = 0;
 	while ((i = serports[j++]))
 		outb(0, i + UART_IER);
 	master_outb(0, EXT_ENABLE_REG);
 	master_outb(0, KEY_IRQ_ENABLE_REG);
 }

 void __init config_q40(void)
 {
 	mach_sched_init = q40_sched_init;

 	mach_init_IRQ = q40_init_IRQ;
 	arch_gettimeoffset = q40_gettimeoffset;
 	mach_hwclk = q40_hwclk;
 	mach_get_ss = q40_get_ss;
 	mach_get_rtc_pll = q40_get_rtc_pll;
 	mach_set_rtc_pll = q40_set_rtc_pll;
 	mach_set_clock_mmss = q40_set_clock_mmss;

 	mach_reset = q40_reset;
 	mach_get_model = q40_get_model;

 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
 	mach_beep = q40_mksound;
 #endif
 #ifdef CONFIG_HEARTBEAT
 	mach_heartbeat = q40_heartbeat;
 #endif
 	mach_halt = q40_halt;

 	/* disable a few things that SMSQ might have left enabled */
 	q40_disable_irqs();

 	/* no DMA at all, but ide-scsi requires it.. make sure
 	 * all physical RAM fits into the boundary - otherwise
 	 * allocator may play costly and useless tricks */
 	mach_max_dma_address = 1024*1024*1024;
 }


 int q40_parse_bootinfo(const struct bi_record *rec)
 {
 	return 1;
 }


 static u32 q40_gettimeoffset(void)
 {
 	return 5000 * (ql_ticks != 0) * 1000;
 }


 /*
  * Looks like op is non-zero for setting the clock, and zero for
  * reading the clock.
  *
  *  struct hwclk_time {
  *         unsigned        sec;       0..59
  *         unsigned        min;       0..59
  *         unsigned        hour;      0..23
  *         unsigned        day;       1..31
  *         unsigned        mon;       0..11
  *         unsigned        year;      00...
  *         int             wday;      0..6, 0 is Sunday, -1 means unknown/don't set
  * };
  */

 static int q40_hwclk(int op, struct rtc_time *t)
 {
 	if (op) {
 		/* Write.... */
 		Q40_RTC_CTRL |= Q40_RTC_WRITE;

 		Q40_RTC_SECS = bin2bcd(t->tm_sec);
 		Q40_RTC_MINS = bin2bcd(t->tm_min);
 		Q40_RTC_HOUR = bin2bcd(t->tm_hour);
 		Q40_RTC_DATE = bin2bcd(t->tm_mday);
 		Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
 		Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
 		if (t->tm_wday >= 0)
 			Q40_RTC_DOW = bin2bcd(t->tm_wday+1);

 		Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
 	} else {
 		/* Read....  */
 		Q40_RTC_CTRL |= Q40_RTC_READ;

 		t->tm_year = bcd2bin (Q40_RTC_YEAR);
 		t->tm_mon  = bcd2bin (Q40_RTC_MNTH)-1;
 		t->tm_mday = bcd2bin (Q40_RTC_DATE);
 		t->tm_hour = bcd2bin (Q40_RTC_HOUR);
 		t->tm_min  = bcd2bin (Q40_RTC_MINS);
 		t->tm_sec  = bcd2bin (Q40_RTC_SECS);

 		Q40_RTC_CTRL &= ~(Q40_RTC_READ);

 		if (t->tm_year < 70)
 			t->tm_year += 100;
 		t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
 	}

 	return 0;
 }

 static unsigned int q40_get_ss(void)
 {
 	return bcd2bin(Q40_RTC_SECS);
 }

 /*
  * Set the minutes and seconds from seconds value 'nowtime'.  Fail if
  * clock is out by > 30 minutes.  Logic lifted from atari code.
  */

 static int q40_set_clock_mmss(unsigned long nowtime)
 {
 	int retval = 0;
 	short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;

 	int rtc_minutes;

 	rtc_minutes = bcd2bin(Q40_RTC_MINS);

 	if ((rtc_minutes < real_minutes ?
 	     real_minutes - rtc_minutes :
 	     rtc_minutes - real_minutes) < 30) {
 		Q40_RTC_CTRL |= Q40_RTC_WRITE;
 		Q40_RTC_MINS = bin2bcd(real_minutes);
 		Q40_RTC_SECS = bin2bcd(real_seconds);
 		Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
 	} else
 		retval = -1;

 	return retval;
 }


 /* get and set PLL calibration of RTC clock */
 #define Q40_RTC_PLL_MASK ((1<<5)-1)
 #define Q40_RTC_PLL_SIGN (1<<5)

 static int q40_get_rtc_pll(struct rtc_pll_info *pll)
 {
 	int tmp = Q40_RTC_CTRL;

 	pll->pll_value = tmp & Q40_RTC_PLL_MASK;
 	if (tmp & Q40_RTC_PLL_SIGN)
 		pll->pll_value = -pll->pll_value;
 	pll->pll_max = 31;
 	pll->pll_min = -31;
 	pll->pll_posmult = 512;
 	pll->pll_negmult = 256;
 	pll->pll_clock = 125829120;

 	return 0;
 }

 static int q40_set_rtc_pll(struct rtc_pll_info *pll)
 {
 	if (!pll->pll_ctrl) {
 		/* the docs are a bit unclear so I am doublesetting */
 		/* RTC_WRITE here ... */
 		int tmp = (pll->pll_value & 31) | (pll->pll_value<0 ? 32 : 0) |
 			  Q40_RTC_WRITE;
 		Q40_RTC_CTRL |= Q40_RTC_WRITE;
 		Q40_RTC_CTRL = tmp;
 		Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
 		return 0;
 	} else
 		return -EINVAL;
 }

 static __init int q40_add_kbd_device(void)
 {
 	struct platform_device *pdev;

 	if (!MACH_IS_Q40)
 		return -ENODEV;

 	pdev = platform_device_register_simple("q40kbd", -1, NULL, 0);
 	return PTR_ERR_OR_ZERO(pdev);
 }
 arch_initcall(q40_add_kbd_device);
	/*
	* arch/m68k/q40/config.c
	*
	* Copyright (C) 1999 Richard Zidlicky
	*
	* originally based on:
	*
	* linux/bvme/config.c
	*
	* This file is subject to the terms and conditions of the GNU General Public
	* License. See the file README.legal in the main directory of this archive
	* for more details.
	*/

	#include <linux/types.h>
	#include <linux/kernel.h>
	#include <linux/mm.h>
	#include <linux/tty.h>
	#include <linux/console.h>
	#include <linux/linkage.h>
	#include <linux/init.h>
	#include <linux/major.h>
	#include <linux/serial_reg.h>
	#include <linux/rtc.h>
	#include <linux/vt_kern.h>
	#include <linux/bcd.h>
	#include <linux/platform_device.h>

	#include <asm/io.h>
	#include <asm/rtc.h>
	#include <asm/bootinfo.h>
	#include <asm/pgtable.h>
	#include <asm/setup.h>
	#include <asm/irq.h>
	#include <asm/traps.h>
	#include <asm/machdep.h>
	#include <asm/q40_master.h>

	extern void q40_init_IRQ(void);
	static void q40_get_model(char *model);
	extern void q40_sched_init(irq_handler_t handler);

	static u32 q40_gettimeoffset(void);
	static int q40_hwclk(int, struct rtc_time *);
	static unsigned int q40_get_ss(void);
	static int q40_set_clock_mmss(unsigned long);
	static int q40_get_rtc_pll(struct rtc_pll_info *pll);
	static int q40_set_rtc_pll(struct rtc_pll_info *pll);

	extern void q40_mksound(unsigned int /freq/, unsigned int /ticks/);

	static void q40_mem_console_write(struct console co, const char b,
	unsigned int count);

	extern int ql_ticks;

	static struct console q40_console_driver = {
	.name = "debug",
	.write = q40_mem_console_write,
	.flags = CON_PRINTBUFFER,
	.index = -1,
	};


	/* early debugging function:*/
	extern char q40_mem_cptr; /=(char )0xff020000;/
	static int _cpleft;

	static void q40_mem_console_write(struct console co, const char s,
	unsigned int count)
	{
	const char *p = s;

	if (count < _cpleft) {
	while (count-- > 0) {
	q40_mem_cptr = p++;
	q40_mem_cptr += 4;
	_cpleft--;
	}
	}
	}

	static int __init q40_debug_setup(char *arg)
	{
	/* useful for early debugging stages - writes kernel messages into SRAM */
	if (MACH_IS_Q40 && !strncmp(arg, "mem", 3)) {
	/printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);/
	_cpleft = 2000 - ((long)q40_mem_cptr-0xff020000) / 4;
	register_console(&q40_console_driver);
	}
	return 0;
	}

	early_param("debug", q40_debug_setup);

	#if 0
	void printq40(char *str)
	{
	int l = strlen(str);
	char *p = q40_mem_cptr;

	while (l-- > 0 && _cpleft-- > 0) {
	p = str++;
	p += 4;
	}
	q40_mem_cptr = p;
	}
	#endif

	static int halted;

	#ifdef CONFIG_HEARTBEAT
	static void q40_heartbeat(int on)
	{
	if (halted)
	return;

	if (on)
	Q40_LED_ON();
	else
	Q40_LED_OFF();
	}
	#endif

	static void q40_reset(void)
	{
	halted = 1;
	printk("\n\n*******************************************\n"
	"Called q40_reset : press the RESET button!!\n"
	"*******************************************\n");
	Q40_LED_ON();
	while (1)
	;
	}

	static void q40_halt(void)
	{
	halted = 1;
	printk("\n\n*******************\n"
	" Called q40_halt\n"
	"*******************\n");
	Q40_LED_ON();
	while (1)
	;
	}

	static void q40_get_model(char *model)
	{
	sprintf(model, "Q40");
	}

	static unsigned int serports[] =
	{
	0x3f8,0x2f8,0x3e8,0x2e8,0
	};

	static void q40_disable_irqs(void)
	{
	unsigned i, j;

	j = 0;
	while ((i = serports[j++]))
	outb(0, i + UART_IER);
	master_outb(0, EXT_ENABLE_REG);
	master_outb(0, KEY_IRQ_ENABLE_REG);
	}

	void __init config_q40(void)
	{
	mach_sched_init = q40_sched_init;

	mach_init_IRQ = q40_init_IRQ;
	arch_gettimeoffset = q40_gettimeoffset;
	mach_hwclk = q40_hwclk;
	mach_get_ss = q40_get_ss;
	mach_get_rtc_pll = q40_get_rtc_pll;
	mach_set_rtc_pll = q40_set_rtc_pll;
	mach_set_clock_mmss = q40_set_clock_mmss;

	mach_reset = q40_reset;
	mach_get_model = q40_get_model;

	#if defined(CONFIG_INPUT_M68K_BEEP) \|\| defined(CONFIG_INPUT_M68K_BEEP_MODULE)
	mach_beep = q40_mksound;
	#endif
	#ifdef CONFIG_HEARTBEAT
	mach_heartbeat = q40_heartbeat;
	#endif
	mach_halt = q40_halt;

	/* disable a few things that SMSQ might have left enabled */
	q40_disable_irqs();

	/* no DMA at all, but ide-scsi requires it.. make sure
	* all physical RAM fits into the boundary - otherwise
	* allocator may play costly and useless tricks */
	mach_max_dma_address = 102410241024;
	}


	int q40_parse_bootinfo(const struct bi_record *rec)
	{
	return 1;
	}


	static u32 q40_gettimeoffset(void)
	{
	return 5000 * (ql_ticks != 0) * 1000;
	}


	/*
	* Looks like op is non-zero for setting the clock, and zero for
	* reading the clock.
	*
	* struct hwclk_time {
	* unsigned sec; 0..59
	* unsigned min; 0..59
	* unsigned hour; 0..23
	* unsigned day; 1..31
	* unsigned mon; 0..11
	* unsigned year; 00...
	* int wday; 0..6, 0 is Sunday, -1 means unknown/don't set
	* };
	*/

	static int q40_hwclk(int op, struct rtc_time *t)
	{
	if (op) {
	/* Write.... */
	Q40_RTC_CTRL \|= Q40_RTC_WRITE;

	Q40_RTC_SECS = bin2bcd(t->tm_sec);
	Q40_RTC_MINS = bin2bcd(t->tm_min);
	Q40_RTC_HOUR = bin2bcd(t->tm_hour);
	Q40_RTC_DATE = bin2bcd(t->tm_mday);
	Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
	Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
	if (t->tm_wday >= 0)
	Q40_RTC_DOW = bin2bcd(t->tm_wday+1);

	Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
	} else {
	/* Read.... */
	Q40_RTC_CTRL \|= Q40_RTC_READ;

	t->tm_year = bcd2bin (Q40_RTC_YEAR);
	t->tm_mon = bcd2bin (Q40_RTC_MNTH)-1;
	t->tm_mday = bcd2bin (Q40_RTC_DATE);
	t->tm_hour = bcd2bin (Q40_RTC_HOUR);
	t->tm_min = bcd2bin (Q40_RTC_MINS);
	t->tm_sec = bcd2bin (Q40_RTC_SECS);

	Q40_RTC_CTRL &= ~(Q40_RTC_READ);

	if (t->tm_year < 70)
	t->tm_year += 100;
	t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
	}

	return 0;
	}

	static unsigned int q40_get_ss(void)
	{
	return bcd2bin(Q40_RTC_SECS);
	}

	/*
	* Set the minutes and seconds from seconds value 'nowtime'. Fail if
	* clock is out by > 30 minutes. Logic lifted from atari code.
	*/

	static int q40_set_clock_mmss(unsigned long nowtime)
	{
	int retval = 0;
	short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;

	int rtc_minutes;

	rtc_minutes = bcd2bin(Q40_RTC_MINS);

	if ((rtc_minutes < real_minutes ?
	real_minutes - rtc_minutes :
	rtc_minutes - real_minutes) < 30) {
	Q40_RTC_CTRL \|= Q40_RTC_WRITE;
	Q40_RTC_MINS = bin2bcd(real_minutes);
	Q40_RTC_SECS = bin2bcd(real_seconds);
	Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
	} else
	retval = -1;

	return retval;
	}


	/* get and set PLL calibration of RTC clock */
	#define Q40_RTC_PLL_MASK ((1<<5)-1)
	#define Q40_RTC_PLL_SIGN (1<<5)

	static int q40_get_rtc_pll(struct rtc_pll_info *pll)
	{
	int tmp = Q40_RTC_CTRL;

	pll->pll_value = tmp & Q40_RTC_PLL_MASK;
	if (tmp & Q40_RTC_PLL_SIGN)
	pll->pll_value = -pll->pll_value;
	pll->pll_max = 31;
	pll->pll_min = -31;
	pll->pll_posmult = 512;
	pll->pll_negmult = 256;
	pll->pll_clock = 125829120;

	return 0;
	}

	static int q40_set_rtc_pll(struct rtc_pll_info *pll)
	{
	if (!pll->pll_ctrl) {
	/* the docs are a bit unclear so I am doublesetting */
	/* RTC_WRITE here ... */
	int tmp = (pll->pll_value & 31) \| (pll->pll_value<0 ? 32 : 0) \|
	Q40_RTC_WRITE;
	Q40_RTC_CTRL \|= Q40_RTC_WRITE;
	Q40_RTC_CTRL = tmp;
	Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
	return 0;
	} else
	return -EINVAL;
	}

	static __init int q40_add_kbd_device(void)
	{
	struct platform_device *pdev;

	if (!MACH_IS_Q40)
	return -ENODEV;

	pdev = platform_device_register_simple("q40kbd", -1, NULL, 0);
	return PTR_ERR_OR_ZERO(pdev);
	}
	arch_initcall(q40_add_kbd_device);