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authorBen Dooks <ben-linux@fluff.org>2010-01-29 09:02:16 +0000
committerBen Dooks <ben-linux@fluff.org>2010-02-23 00:03:43 +0000
commit6c6971dc4e8c23bb61bf309898e1693f9c5c8c24 (patch)
treea8d6ede6ccf66c8ab0e62c5c78308bf050f72253 /arch/arm/plat-s3c
parent2c420fe22f3d526691773288807d010068ce3033 (diff)
ARM: SAMSUNG: Move the last build from plat-s3c to plat-samsung
Move the init.c and time.c files to plat-samsung from plat-s3c, thus clearing the last files that are being built in here. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c')
-rw-r--r--arch/arm/plat-s3c/Makefile4
-rw-r--r--arch/arm/plat-s3c/init.c160
-rw-r--r--arch/arm/plat-s3c/time.c285
3 files changed, 1 insertions, 448 deletions
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 2a3c4a49117..867c9cf755a 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -6,10 +6,8 @@
obj-y :=
obj-m :=
-obj-n :=
+obj-n := dummy.o
obj- :=
# Core support for all Samsung SoCs
-obj-y += init.o
-obj-y += time.o
diff --git a/arch/arm/plat-s3c/init.c b/arch/arm/plat-s3c/init.c
deleted file mode 100644
index 6790edfaca6..00000000000
--- a/arch/arm/plat-s3c/init.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/* linux/arch/arm/plat-s3c/init.c
- *
- * Copyright (c) 2008 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- * http://armlinux.simtec.co.uk/
- *
- * S3C series CPU initialisation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/serial_core.h>
-#include <linux/platform_device.h>
-
-#include <mach/hardware.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <plat/cpu.h>
-#include <plat/devs.h>
-#include <plat/clock.h>
-
-#include <plat/regs-serial.h>
-
-static struct cpu_table *cpu;
-
-static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode,
- struct cpu_table *tab,
- unsigned int count)
-{
- for (; count != 0; count--, tab++) {
- if ((idcode & tab->idmask) == tab->idcode)
- return tab;
- }
-
- return NULL;
-}
-
-void __init s3c_init_cpu(unsigned long idcode,
- struct cpu_table *cputab, unsigned int cputab_size)
-{
- cpu = s3c_lookup_cpu(idcode, cputab, cputab_size);
-
- if (cpu == NULL) {
- printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode);
- panic("Unknown S3C24XX CPU");
- }
-
- printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
-
- if (cpu->map_io == NULL || cpu->init == NULL) {
- printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
- panic("Unsupported Samsung CPU");
- }
-
- cpu->map_io();
-}
-
-/* s3c24xx_init_clocks
- *
- * Initialise the clock subsystem and associated information from the
- * given master crystal value.
- *
- * xtal = 0 -> use default PLL crystal value (normally 12MHz)
- * != 0 -> PLL crystal value in Hz
-*/
-
-void __init s3c24xx_init_clocks(int xtal)
-{
- if (xtal == 0)
- xtal = 12*1000*1000;
-
- if (cpu == NULL)
- panic("s3c24xx_init_clocks: no cpu setup?\n");
-
- if (cpu->init_clocks == NULL)
- panic("s3c24xx_init_clocks: cpu has no clock init\n");
- else
- (cpu->init_clocks)(xtal);
-}
-
-/* uart management */
-
-static int nr_uarts __initdata = 0;
-
-static struct s3c2410_uartcfg uart_cfgs[CONFIG_SERIAL_SAMSUNG_UARTS];
-
-/* s3c24xx_init_uartdevs
- *
- * copy the specified platform data and configuration into our central
- * set of devices, before the data is thrown away after the init process.
- *
- * This also fills in the array passed to the serial driver for the
- * early initialisation of the console.
-*/
-
-void __init s3c24xx_init_uartdevs(char *name,
- struct s3c24xx_uart_resources *res,
- struct s3c2410_uartcfg *cfg, int no)
-{
- struct platform_device *platdev;
- struct s3c2410_uartcfg *cfgptr = uart_cfgs;
- struct s3c24xx_uart_resources *resp;
- int uart;
-
- memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no);
-
- for (uart = 0; uart < no; uart++, cfg++, cfgptr++) {
- platdev = s3c24xx_uart_src[cfgptr->hwport];
-
- resp = res + cfgptr->hwport;
-
- s3c24xx_uart_devs[uart] = platdev;
-
- platdev->name = name;
- platdev->resource = resp->resources;
- platdev->num_resources = resp->nr_resources;
-
- platdev->dev.platform_data = cfgptr;
- }
-
- nr_uarts = no;
-}
-
-void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no)
-{
- if (cpu == NULL)
- return;
-
- if (cpu->init_uarts == NULL) {
- printk(KERN_ERR "s3c24xx_init_uarts: cpu has no uart init\n");
- } else
- (cpu->init_uarts)(cfg, no);
-}
-
-static int __init s3c_arch_init(void)
-{
- int ret;
-
- // do the correct init for cpu
-
- if (cpu == NULL)
- panic("s3c_arch_init: NULL cpu\n");
-
- ret = (cpu->init)();
- if (ret != 0)
- return ret;
-
- ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts);
- return ret;
-}
-
-arch_initcall(s3c_arch_init);
diff --git a/arch/arm/plat-s3c/time.c b/arch/arm/plat-s3c/time.c
deleted file mode 100644
index 3b27b29da47..00000000000
--- a/arch/arm/plat-s3c/time.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/* linux/arch/arm/plat-s3c24xx/time.c
- *
- * Copyright (C) 2003-2005 Simtec Electronics
- * Ben Dooks, <ben@simtec.co.uk>
- *
- * 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/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-
-#include <asm/system.h>
-#include <asm/leds.h>
-#include <asm/mach-types.h>
-
-#include <asm/irq.h>
-#include <mach/map.h>
-#include <plat/regs-timer.h>
-#include <mach/regs-irq.h>
-#include <asm/mach/time.h>
-#include <mach/tick.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-static unsigned long timer_startval;
-static unsigned long timer_usec_ticks;
-
-#ifndef TICK_MAX
-#define TICK_MAX (0xffff)
-#endif
-
-#define TIMER_USEC_SHIFT 16
-
-/* we use the shifted arithmetic to work out the ratio of timer ticks
- * to usecs, as often the peripheral clock is not a nice even multiple
- * of 1MHz.
- *
- * shift of 14 and 15 are too low for the 12MHz, 16 seems to be ok
- * for the current HZ value of 200 without producing overflows.
- *
- * Original patch by Dimitry Andric, updated by Ben Dooks
-*/
-
-
-/* timer_mask_usec_ticks
- *
- * given a clock and divisor, make the value to pass into timer_ticks_to_usec
- * to scale the ticks into usecs
-*/
-
-static inline unsigned long
-timer_mask_usec_ticks(unsigned long scaler, unsigned long pclk)
-{
- unsigned long den = pclk / 1000;
-
- return ((1000 << TIMER_USEC_SHIFT) * scaler + (den >> 1)) / den;
-}
-
-/* timer_ticks_to_usec
- *
- * convert timer ticks to usec.
-*/
-
-static inline unsigned long timer_ticks_to_usec(unsigned long ticks)
-{
- unsigned long res;
-
- res = ticks * timer_usec_ticks;
- res += 1 << (TIMER_USEC_SHIFT - 4); /* round up slightly */
-
- return res >> TIMER_USEC_SHIFT;
-}
-
-/***
- * Returns microsecond since last clock interrupt. Note that interrupts
- * will have been disabled by do_gettimeoffset()
- * IRQs are disabled before entering here from do_gettimeofday()
- */
-
-static unsigned long s3c2410_gettimeoffset (void)
-{
- unsigned long tdone;
- unsigned long tval;
-
- /* work out how many ticks have gone since last timer interrupt */
-
- tval = __raw_readl(S3C2410_TCNTO(4));
- tdone = timer_startval - tval;
-
- /* check to see if there is an interrupt pending */
-
- if (s3c24xx_ostimer_pending()) {
- /* re-read the timer, and try and fix up for the missed
- * interrupt. Note, the interrupt may go off before the
- * timer has re-loaded from wrapping.
- */
-
- tval = __raw_readl(S3C2410_TCNTO(4));
- tdone = timer_startval - tval;
-
- if (tval != 0)
- tdone += timer_startval;
- }
-
- return timer_ticks_to_usec(tdone);
-}
-
-
-/*
- * IRQ handler for the timer
- */
-static irqreturn_t
-s3c2410_timer_interrupt(int irq, void *dev_id)
-{
- timer_tick();
- return IRQ_HANDLED;
-}
-
-static struct irqaction s3c2410_timer_irq = {
- .name = "S3C2410 Timer Tick",
- .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
- .handler = s3c2410_timer_interrupt,
-};
-
-#define use_tclk1_12() ( \
- machine_is_bast() || \
- machine_is_vr1000() || \
- machine_is_anubis() || \
- machine_is_osiris())
-
-static struct clk *tin;
-static struct clk *tdiv;
-static struct clk *timerclk;
-
-/*
- * Set up timer interrupt, and return the current time in seconds.
- *
- * Currently we only use timer4, as it is the only timer which has no
- * other function that can be exploited externally
- */
-static void s3c2410_timer_setup (void)
-{
- unsigned long tcon;
- unsigned long tcnt;
- unsigned long tcfg1;
- unsigned long tcfg0;
-
- tcnt = TICK_MAX; /* default value for tcnt */
-
- /* configure the system for whichever machine is in use */
-
- if (use_tclk1_12()) {
- /* timer is at 12MHz, scaler is 1 */
- timer_usec_ticks = timer_mask_usec_ticks(1, 12000000);
- tcnt = 12000000 / HZ;
-
- tcfg1 = __raw_readl(S3C2410_TCFG1);
- tcfg1 &= ~S3C2410_TCFG1_MUX4_MASK;
- tcfg1 |= S3C2410_TCFG1_MUX4_TCLK1;
- __raw_writel(tcfg1, S3C2410_TCFG1);
- } else {
- unsigned long pclk;
- struct clk *tscaler;
-
- /* for the h1940 (and others), we use the pclk from the core
- * to generate the timer values. since values around 50 to
- * 70MHz are not values we can directly generate the timer
- * value from, we need to pre-scale and divide before using it.
- *
- * for instance, using 50.7MHz and dividing by 6 gives 8.45MHz
- * (8.45 ticks per usec)
- */
-
- pclk = clk_get_rate(timerclk);
-
- /* configure clock tick */
-
- timer_usec_ticks = timer_mask_usec_ticks(6, pclk);
-
- tscaler = clk_get_parent(tdiv);
-
- clk_set_rate(tscaler, pclk / 3);
- clk_set_rate(tdiv, pclk / 6);
- clk_set_parent(tin, tdiv);
-
- tcnt = clk_get_rate(tin) / HZ;
- }
-
- tcon = __raw_readl(S3C2410_TCON);
- tcfg0 = __raw_readl(S3C2410_TCFG0);
- tcfg1 = __raw_readl(S3C2410_TCFG1);
-
- /* timers reload after counting zero, so reduce the count by 1 */
-
- tcnt--;
-
- printk(KERN_DEBUG "timer tcon=%08lx, tcnt %04lx, tcfg %08lx,%08lx, usec %08lx\n",
- tcon, tcnt, tcfg0, tcfg1, timer_usec_ticks);
-
- /* check to see if timer is within 16bit range... */
- if (tcnt > TICK_MAX) {
- panic("setup_timer: HZ is too small, cannot configure timer!");
- return;
- }
-
- __raw_writel(tcfg1, S3C2410_TCFG1);
- __raw_writel(tcfg0, S3C2410_TCFG0);
-
- timer_startval = tcnt;
- __raw_writel(tcnt, S3C2410_TCNTB(4));
-
- /* ensure timer is stopped... */
-
- tcon &= ~(7<<20);
- tcon |= S3C2410_TCON_T4RELOAD;
- tcon |= S3C2410_TCON_T4MANUALUPD;
-
- __raw_writel(tcon, S3C2410_TCON);
- __raw_writel(tcnt, S3C2410_TCNTB(4));
- __raw_writel(tcnt, S3C2410_TCMPB(4));
-
- /* start the timer running */
- tcon |= S3C2410_TCON_T4START;
- tcon &= ~S3C2410_TCON_T4MANUALUPD;
- __raw_writel(tcon, S3C2410_TCON);
-}
-
-static void __init s3c2410_timer_resources(void)
-{
- struct platform_device tmpdev;
-
- tmpdev.dev.bus = &platform_bus_type;
- tmpdev.id = 4;
-
- timerclk = clk_get(NULL, "timers");
- if (IS_ERR(timerclk))
- panic("failed to get clock for system timer");
-
- clk_enable(timerclk);
-
- if (!use_tclk1_12()) {
- tin = clk_get(&tmpdev.dev, "pwm-tin");
- if (IS_ERR(tin))
- panic("failed to get pwm-tin clock for system timer");
-
- tdiv = clk_get(&tmpdev.dev, "pwm-tdiv");
- if (IS_ERR(tdiv))
- panic("failed to get pwm-tdiv clock for system timer");
- }
-
- clk_enable(tin);
-}
-
-static void __init s3c2410_timer_init(void)
-{
- s3c2410_timer_resources();
- s3c2410_timer_setup();
- setup_irq(IRQ_TIMER4, &s3c2410_timer_irq);
-}
-
-struct sys_timer s3c24xx_timer = {
- .init = s3c2410_timer_init,
- .offset = s3c2410_gettimeoffset,
- .resume = s3c2410_timer_setup
-};