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-rw-r--r--arch/arm/include/asm/fiq.h5
-rw-r--r--arch/arm/kernel/fiq.c79
-rw-r--r--arch/arm/mach-s3c2410/include/mach/irqs.h22
-rw-r--r--arch/arm/mach-s3c2410/include/mach/ts.h35
-rw-r--r--arch/arm/plat-s3c/Kconfig5
-rw-r--r--arch/arm/plat-s3c/Makefile1
-rw-r--r--arch/arm/plat-s3c/include/plat/devs.h2
-rw-r--r--arch/arm/plat-s3c/include/plat/nand.h1
-rw-r--r--arch/arm/plat-s3c/include/plat/pwm.h45
-rw-r--r--arch/arm/plat-s3c/pwm.c288
-rw-r--r--arch/arm/plat-s3c24xx/adc.c58
-rw-r--r--arch/arm/plat-s3c24xx/cpu.c10
-rw-r--r--arch/arm/plat-s3c24xx/devs.c20
-rw-r--r--arch/arm/plat-s3c24xx/include/plat/irq.h21
-rw-r--r--arch/arm/plat-s3c24xx/irq.c50
-rw-r--r--arch/arm/plat-s3c24xx/pwm-clock.c437
16 files changed, 1058 insertions, 21 deletions
diff --git a/arch/arm/include/asm/fiq.h b/arch/arm/include/asm/fiq.h
index 2242ce22ec6..7ade2b8445d 100644
--- a/arch/arm/include/asm/fiq.h
+++ b/arch/arm/include/asm/fiq.h
@@ -29,8 +29,9 @@ struct fiq_handler {
extern int claim_fiq(struct fiq_handler *f);
extern void release_fiq(struct fiq_handler *f);
extern void set_fiq_handler(void *start, unsigned int length);
-extern void set_fiq_regs(struct pt_regs *regs);
-extern void get_fiq_regs(struct pt_regs *regs);
+extern void set_fiq_c_handler(void (*handler)(void));
+extern void __attribute__((naked)) set_fiq_regs(struct pt_regs *regs);
+extern void __attribute__((naked)) get_fiq_regs(struct pt_regs *regs);
extern void enable_fiq(int fiq);
extern void disable_fiq(int fiq);
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
index 6ff7919613d..c07691ef4c0 100644
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -8,6 +8,8 @@
*
* FIQ support re-written by Russell King to be more generic
*
+ * FIQ handler in C supoprt written by Andy Green <andy@openmoko.com>
+ *
* We now properly support a method by which the FIQ handlers can
* be stacked onto the vector. We still do not support sharing
* the FIQ vector itself.
@@ -124,6 +126,83 @@ void __naked get_fiq_regs(struct pt_regs *regs)
: "r" (&regs->ARM_r8), "I" (PSR_I_BIT | PSR_F_BIT | FIQ_MODE));
}
+/* -------- FIQ handler in C ---------
+ *
+ * Major Caveats for using this
+ * ---------------------------
+ * *
+ * * 1) it CANNOT touch any vmalloc()'d memory, only memory
+ * that was kmalloc()'d. Static allocations in the monolithic kernel
+ * are kmalloc()'d so they are okay. You can touch memory-mapped IO, but
+ * the pointer for it has to have been stored in kmalloc'd memory. The
+ * reason for this is simple: every now and then Linux turns off interrupts
+ * and reorders the paging tables. If a FIQ happens during this time, the
+ * virtual memory space can be partly or entirely disordered or missing.
+ *
+ * 2) Because vmalloc() is used when a module is inserted, THIS FIQ
+ * ISR HAS TO BE IN THE MONOLITHIC KERNEL, not a module. But the way
+ * it is set up, you can all to enable and disable it from your module
+ * and intercommunicate with it through struct fiq_ipc
+ * fiq_ipc which you can define in
+ * asm/archfiq_ipc_type.h. The reason is the same as above, a
+ * FIQ could happen while even the ISR is not present in virtual memory
+ * space due to pagetables being changed at the time.
+ *
+ * 3) You can't call any Linux API code except simple macros
+ * - understand that FIQ can come in at any time, no matter what
+ * state of undress the kernel may privately be in, thinking it
+ * locked the door by turning off interrupts... FIQ is an
+ * unstoppable monster force (which is its value)
+ * - they are not vmalloc()'d memory safe
+ * - they might do crazy stuff like sleep: FIQ pisses fire and
+ * is not interested in 'sleep' that the weak seem to need
+ * - calling APIs from FIQ can re-enter un-renterable things
+ * - summary: you cannot interoperate with linux APIs directly in the FIQ ISR
+ *
+ * If you follow these rules, it is fantastic, an extremely powerful, solid,
+ * genuine hard realtime feature.
+ */
+
+static void (*current_fiq_c_isr)(void);
+#define FIQ_C_ISR_STACK_SIZE 256
+
+static void __attribute__((naked)) __jump_to_isr(void)
+{
+ asm __volatile__ ("mov pc, r8");
+}
+
+
+static void __attribute__((naked)) __actual_isr(void)
+{
+ asm __volatile__ (
+ "stmdb sp!, {r0-r12, lr};"
+ "mov fp, sp;"
+ );
+
+ current_fiq_c_isr();
+
+ asm __volatile__ (
+ "ldmia sp!, {r0-r12, lr};"
+ "subs pc, lr, #4;"
+ );
+}
+
+void set_fiq_c_handler(void (*isr)(void))
+{
+ struct pt_regs regs;
+
+ memset(&regs, 0, sizeof(regs));
+ regs.ARM_r8 = (unsigned long) __actual_isr;
+ regs.ARM_sp = 0xffff001c + FIQ_C_ISR_STACK_SIZE;
+
+ set_fiq_handler(__jump_to_isr, 4);
+
+ current_fiq_c_isr = isr;
+
+ set_fiq_regs(&regs);
+}
+/* -------- FIQ handler in C ---------*/
+
int claim_fiq(struct fiq_handler *f)
{
int ret = 0;
diff --git a/arch/arm/mach-s3c2410/include/mach/irqs.h b/arch/arm/mach-s3c2410/include/mach/irqs.h
index 2a2384ffa7b..b6d2c2adbcf 100644
--- a/arch/arm/mach-s3c2410/include/mach/irqs.h
+++ b/arch/arm/mach-s3c2410/include/mach/irqs.h
@@ -153,9 +153,9 @@
#define IRQ_S3C2443_AC97 S3C2410_IRQSUB(28)
#ifdef CONFIG_CPU_S3C2443
-#define NR_IRQS (IRQ_S3C2443_AC97+1)
+#define S3C2410_NR_INTERNAL_IRQS (IRQ_S3C2443_AC97+1)
#else
-#define NR_IRQS (IRQ_S3C2440_AC97+1)
+#define S3C2410_NR_INTERNAL_IRQS (IRQ_S3C2440_AC97+1)
#endif
/* compatibility define. */
@@ -167,4 +167,22 @@
/* Our FIQs are routable from IRQ_EINT0 to IRQ_ADCPARENT */
#define FIQ_START IRQ_EINT0
+/* Board specific IRQs
+ * If your board needs a extra set of IRQ numbers add it to the list here.
+ * Make sure that the numbers are kept in descending, so if multiple boards are
+ * selected the maximum will be used and there are enough IRQ numbers available
+ * for each board.
+ */
+
+#if defined(CONFIG_MACH_NEO1973_GTA02)
+#define S3C2410_NR_BOARD_IRQS 9
+#else
+#define S3C2410_NR_BOARD_IRQS 0
+#endif
+
+#define S3C2410_BOARD_IRQ_START S3C2410_NR_INTERNAL_IRQS
+#define S3C2410_BOARD_IRQ_END (S3C2410_BOARD_IRQ_START + S3C2410_NR_BOARD_IRQS)
+
+#define NR_IRQS S3C2410_BOARD_IRQ_END
+
#endif /* __ASM_ARCH_IRQ_H */
diff --git a/arch/arm/mach-s3c2410/include/mach/ts.h b/arch/arm/mach-s3c2410/include/mach/ts.h
new file mode 100644
index 00000000000..ac0c727d155
--- /dev/null
+++ b/arch/arm/mach-s3c2410/include/mach/ts.h
@@ -0,0 +1,35 @@
+/* arch/arm/mach-s3c2410/include/mach/ts.h
+ *
+ * Copyright (c) 2005 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ *
+ * 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.
+ *
+ *
+ * Changelog:
+ * 24-Mar-2005 RTP Created file
+ * 03-Aug-2005 RTP Renamed to ts.h
+ */
+
+#ifndef __ASM_ARM_TS_H
+#define __ASM_ARM_TS_H
+
+#include <linux/input/touchscreen/ts_filter.h>
+
+struct s3c2410_ts_mach_info {
+ /* Touchscreen delay. */
+ int delay;
+ /* Prescaler value. */
+ int presc;
+ /*
+ * Null-terminated array of pointers to filter APIs and configurations
+ * we want to use. In the same order they will be applied.
+ */
+ const struct ts_filter_chain_configuration *filter_config;
+};
+
+void set_s3c2410ts_info(const struct s3c2410_ts_mach_info *hard_s3c2410ts_info);
+
+#endif /* __ASM_ARM_TS_H */
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index 935c7558469..bae4b955edf 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -166,6 +166,11 @@ config S3C_DMA
help
Internal configuration for S3C DMA core
+config S3C_PWM
+ bool
+ help
+ PWM timer code for the S3C2410, and similar processors
+
# device definitions to compile in
config S3C_DEV_HSMMC
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 0761766b183..4d8e4a35d34 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -38,3 +38,4 @@ obj-$(CONFIG_SND_S3C64XX_SOC_I2S) += dev-audio.o
obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
obj-$(CONFIG_S3C_DEV_USB_HOST) += dev-usb.o
obj-$(CONFIG_S3C_DEV_USB_HSOTG) += dev-usb-hsotg.o
+obj-$(CONFIG_S3C_PWM) += pwm.o
diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h
index 2e170827e0b..41773808040 100644
--- a/arch/arm/plat-s3c/include/plat/devs.h
+++ b/arch/arm/plat-s3c/include/plat/devs.h
@@ -51,6 +51,8 @@ extern struct platform_device s3c_device_nand;
extern struct platform_device s3c_device_usbgadget;
extern struct platform_device s3c_device_usb_hsotg;
+extern struct platform_device s3c_device_ts;
+
/* s3c2440 specific devices */
#ifdef CONFIG_CPU_S3C2440
diff --git a/arch/arm/plat-s3c/include/plat/nand.h b/arch/arm/plat-s3c/include/plat/nand.h
index 18f958801e6..723ab032059 100644
--- a/arch/arm/plat-s3c/include/plat/nand.h
+++ b/arch/arm/plat-s3c/include/plat/nand.h
@@ -47,6 +47,7 @@ struct s3c2410_platform_nand {
int twrph1; /* time for release CLE/ALE from nWE/nOE inactive */
unsigned int ignore_unset_ecc:1;
+ unsigned int software_ecc:1; /* force software ecc at runtime */
int nr_sets;
struct s3c2410_nand_set *sets;
diff --git a/arch/arm/plat-s3c/include/plat/pwm.h b/arch/arm/plat-s3c/include/plat/pwm.h
new file mode 100644
index 00000000000..6a41b0ad840
--- /dev/null
+++ b/arch/arm/plat-s3c/include/plat/pwm.h
@@ -0,0 +1,45 @@
+#ifndef __S3C2410_PWM_H
+#define __S3C2410_PWM_H
+
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <mach/io.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <plat/regs-timer.h>
+
+enum pwm_timer {
+ PWM0,
+ PWM1,
+ PWM2,
+ PWM3,
+ PWM4
+};
+
+struct s3c2410_pwm {
+ enum pwm_timer timerid;
+ struct clk *pclk;
+ unsigned long pclk_rate;
+ unsigned long prescaler;
+ unsigned long divider;
+ unsigned long counter;
+ unsigned long comparer;
+};
+
+struct s3c24xx_pwm_platform_data{
+ /* callback to attach platform children (to enforce suspend / resume
+ * ordering */
+ void (*attach_child_devices)(struct device *parent_device);
+};
+
+int s3c2410_pwm_init(struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_enable(struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_disable(struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_start(struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_stop(struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_duty_cycle(int reg_value, struct s3c2410_pwm *s3c2410_pwm);
+int s3c2410_pwm_dumpregs(void);
+
+#endif /* __S3C2410_PWM_H */
diff --git a/arch/arm/plat-s3c/pwm.c b/arch/arm/plat-s3c/pwm.c
new file mode 100644
index 00000000000..250bd2bc9b8
--- /dev/null
+++ b/arch/arm/plat-s3c/pwm.c
@@ -0,0 +1,288 @@
+/*
+ * arch/arm/plat-s3c/pwm.c
+ *
+ * Copyright (c) by Javi Roman <javiroman@kernel-labs.org>
+ * for the Openmoko Project.
+ *
+ * S3C2410A SoC PWM support
+ *
+ * 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.
+ *
+ * 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/init.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <mach/hardware.h>
+#include <plat/regs-timer.h>
+#include <plat/pwm.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_PM
+ static unsigned long standby_reg_tcon;
+ static unsigned long standby_reg_tcfg0;
+ static unsigned long standby_reg_tcfg1;
+#endif
+
+int s3c2410_pwm_disable(struct s3c2410_pwm *pwm)
+{
+ unsigned long tcon;
+
+ /* stop timer */
+ tcon = __raw_readl(S3C2410_TCON);
+ tcon &= 0xffffff00;
+ __raw_writel(tcon, S3C2410_TCON);
+
+ clk_disable(pwm->pclk);
+ clk_put(pwm->pclk);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_disable);
+
+int s3c2410_pwm_init(struct s3c2410_pwm *pwm)
+{
+ pwm->pclk = clk_get(NULL, "timers");
+ if (IS_ERR(pwm->pclk))
+ return PTR_ERR(pwm->pclk);
+
+ clk_enable(pwm->pclk);
+ pwm->pclk_rate = clk_get_rate(pwm->pclk);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_init);
+
+int s3c2410_pwm_enable(struct s3c2410_pwm *pwm)
+{
+ unsigned long tcfg0, tcfg1, tcnt, tcmp;
+
+ /* control registers bits */
+ tcfg1 = __raw_readl(S3C2410_TCFG1);
+ tcfg0 = __raw_readl(S3C2410_TCFG0);
+
+ /* divider & scaler slection */
+ switch (pwm->timerid) {
+ case PWM0:
+ tcfg1 &= ~S3C2410_TCFG1_MUX0_MASK;
+ tcfg0 &= ~S3C2410_TCFG_PRESCALER0_MASK;
+ break;
+ case PWM1:
+ tcfg1 &= ~S3C2410_TCFG1_MUX1_MASK;
+ tcfg0 &= ~S3C2410_TCFG_PRESCALER0_MASK;
+ break;
+ case PWM2:
+ tcfg1 &= ~S3C2410_TCFG1_MUX2_MASK;
+ tcfg0 &= ~S3C2410_TCFG_PRESCALER1_MASK;
+ break;
+ case PWM3:
+ tcfg1 &= ~S3C2410_TCFG1_MUX3_MASK;
+ tcfg0 &= ~S3C2410_TCFG_PRESCALER1_MASK;
+ break;
+ case PWM4:
+ /* timer four is not capable of doing PWM */
+ break;
+ default:
+ clk_disable(pwm->pclk);
+ clk_put(pwm->pclk);
+ return -1;
+ }
+
+ /* divider & scaler values */
+ tcfg1 |= pwm->divider;
+ __raw_writel(tcfg1, S3C2410_TCFG1);
+
+ switch (pwm->timerid) {
+ case PWM0:
+ case PWM1:
+ tcfg0 |= pwm->prescaler;
+ __raw_writel(tcfg0, S3C2410_TCFG0);
+ break;
+ default:
+ if ((tcfg0 | pwm->prescaler) != tcfg0) {
+ printk(KERN_WARNING "not changing prescaler of PWM %u,"
+ " since it's shared with timer4 (clock tick)\n",
+ pwm->timerid);
+ }
+ break;
+ }
+
+ /* timer count and compare buffer initial values */
+ tcnt = pwm->counter;
+ tcmp = pwm->comparer;
+
+ __raw_writel(tcnt, S3C2410_TCNTB(pwm->timerid));
+ __raw_writel(tcmp, S3C2410_TCMPB(pwm->timerid));
+
+ /* ensure timer is stopped */
+ s3c2410_pwm_stop(pwm);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_enable);
+
+int s3c2410_pwm_start(struct s3c2410_pwm *pwm)
+{
+ unsigned long tcon;
+
+ tcon = __raw_readl(S3C2410_TCON);
+
+ switch (pwm->timerid) {
+ case PWM0:
+ tcon |= S3C2410_TCON_T0START;
+ tcon &= ~S3C2410_TCON_T0MANUALUPD;
+ break;
+ case PWM1:
+ tcon |= S3C2410_TCON_T1START;
+ tcon &= ~S3C2410_TCON_T1MANUALUPD;
+ break;
+ case PWM2:
+ tcon |= S3C2410_TCON_T2START;
+ tcon &= ~S3C2410_TCON_T2MANUALUPD;
+ break;
+ case PWM3:
+ tcon |= S3C2410_TCON_T3START;
+ tcon &= ~S3C2410_TCON_T3MANUALUPD;
+ break;
+ case PWM4:
+ /* timer four is not capable of doing PWM */
+ default:
+ return -ENODEV;
+ }
+
+ __raw_writel(tcon, S3C2410_TCON);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_start);
+
+int s3c2410_pwm_stop(struct s3c2410_pwm *pwm)
+{
+ unsigned long tcon;
+
+ tcon = __raw_readl(S3C2410_TCON);
+
+ switch (pwm->timerid) {
+ case PWM0:
+ tcon &= ~0x00000000;
+ tcon |= S3C2410_TCON_T0RELOAD;
+ tcon |= S3C2410_TCON_T0MANUALUPD;
+ break;
+ case PWM1:
+ tcon &= ~0x00000080;
+ tcon |= S3C2410_TCON_T1RELOAD;
+ tcon |= S3C2410_TCON_T1MANUALUPD;
+ break;
+ case PWM2:
+ tcon &= ~0x00000800;
+ tcon |= S3C2410_TCON_T2RELOAD;
+ tcon |= S3C2410_TCON_T2MANUALUPD;
+ break;
+ case PWM3:
+ tcon &= ~0x00008000;
+ tcon |= S3C2410_TCON_T3RELOAD;
+ tcon |= S3C2410_TCON_T3MANUALUPD;
+ break;
+ case PWM4:
+ /* timer four is not capable of doing PWM */
+ default:
+ return -ENODEV;
+ }
+
+ __raw_writel(tcon, S3C2410_TCON);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_stop);
+
+int s3c2410_pwm_duty_cycle(int reg_value, struct s3c2410_pwm *pwm)
+{
+ __raw_writel(reg_value, S3C2410_TCMPB(pwm->timerid));
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_duty_cycle);
+
+int s3c2410_pwm_dumpregs(void)
+{
+ printk(KERN_INFO "TCON: %08lx, TCFG0: %08lx, TCFG1: %08lx\n",
+ (unsigned long) __raw_readl(S3C2410_TCON),
+ (unsigned long) __raw_readl(S3C2410_TCFG0),
+ (unsigned long) __raw_readl(S3C2410_TCFG1));
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2410_pwm_dumpregs);
+
+static int __init s3c24xx_pwm_probe(struct platform_device *pdev)
+{
+ struct s3c24xx_pwm_platform_data *pdata = pdev->dev.platform_data;
+
+ dev_info(&pdev->dev, "s3c24xx_pwm is registered \n");
+
+ /* if platform was interested, give him a chance to register
+ * platform devices that switch power with us as the parent
+ * at registration time -- ensures suspend / resume ordering
+ */
+ if (pdata)
+ if (pdata->attach_child_devices)
+ (pdata->attach_child_devices)(&pdev->dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int s3c24xx_pwm_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ /* PWM config should be kept in suspending */
+ standby_reg_tcon = __raw_readl(S3C2410_TCON);
+ standby_reg_tcfg0 = __raw_readl(S3C2410_TCFG0);
+ standby_reg_tcfg1 = __raw_readl(S3C2410_TCFG1);
+
+ return 0;
+}
+
+static int s3c24xx_pwm_resume(struct platform_device *pdev)
+{
+ __raw_writel(standby_reg_tcon, S3C2410_TCON);
+ __raw_writel(standby_reg_tcfg0, S3C2410_TCFG0);
+ __raw_writel(standby_reg_tcfg1, S3C2410_TCFG1);
+
+ return 0;
+}
+#else
+#define s3c24xx_pwm_suspend NULL
+#define s3c24xx_pwm_resume NULL
+#endif
+
+static struct platform_driver s3c24xx_pwm_driver = {
+ .driver = {
+ .name = "s3c24xx_pwm",
+ .owner = THIS_MODULE,
+ },
+ .probe = s3c24xx_pwm_probe,
+ .suspend = s3c24xx_pwm_suspend,
+ .resume = s3c24xx_pwm_resume,
+};
+
+static int __init s3c24xx_pwm_init(void)
+{
+ return platform_driver_register(&s3c24xx_pwm_driver);
+}
+
+static void __exit s3c24xx_pwm_exit(void)
+{
+}
+
+MODULE_AUTHOR("Javi Roman <javiroman@kernel-labs.org>");
+MODULE_LICENSE("GPL");
+
+module_init(s3c24xx_pwm_init);
+module_exit(s3c24xx_pwm_exit);
diff --git a/arch/arm/plat-s3c24xx/adc.c b/arch/arm/plat-s3c24xx/adc.c
index ee1baf11ad9..9cff2320e11 100644
--- a/arch/arm/plat-s3c24xx/adc.c
+++ b/arch/arm/plat-s3c24xx/adc.c
@@ -43,6 +43,7 @@ struct s3c_adc_client {
unsigned int nr_samples;
unsigned char is_ts;
unsigned char channel;
+ unsigned int selected;
void (*select_cb)(unsigned selected);
void (*convert_cb)(unsigned val1, unsigned val2,
@@ -58,20 +59,31 @@ struct adc_device {
void __iomem *regs;
unsigned int prescale;
+ unsigned int delay;
int irq;
};
static struct adc_device *adc_dev;
+static struct work_struct resume_work;
+
static LIST_HEAD(adc_pending);
#define adc_dbg(_adc, msg...) dev_dbg(&(_adc)->pdev->dev, msg)
+#define AUTOPST (S3C2410_ADCTSC_YM_SEN | S3C2410_ADCTSC_YP_SEN | \
+ S3C2410_ADCTSC_XP_SEN | S3C2410_ADCTSC_AUTO_PST | \
+ S3C2410_ADCTSC_XY_PST(0))
+
static inline void s3c_adc_convert(struct adc_device *adc)
{
unsigned con = readl(adc->regs + S3C2410_ADCCON);
+ if (adc->cur->is_ts)
+ writel(S3C2410_ADCTSC_PULL_UP_DISABLE | AUTOPST,
+ adc->regs + S3C2410_ADCTSC);
+
con |= S3C2410_ADCCON_ENABLE_START;
writel(con, adc->regs + S3C2410_ADCCON);
}
@@ -81,7 +93,10 @@ static inline void s3c_adc_select(struct adc_device *adc,
{
unsigned con = readl(adc->regs + S3C2410_ADCCON);
- client->select_cb(1);
+ if (!client->selected) {
+ client->selected = 1;
+ client->select_cb(1);
+ }
con &= ~S3C2410_ADCCON_MUXMASK;
con &= ~S3C2410_ADCCON_STDBM;
@@ -105,12 +120,9 @@ static void s3c_adc_try(struct adc_device *adc)
{
struct s3c_adc_client *next = adc->ts_pend;
- if (!next && !list_empty(&adc_pending)) {
+ if (!next && !list_empty(&adc_pending))
next = list_first_entry(&adc_pending,
struct s3c_adc_client, pend);
- list_del(&next->pend);
- } else
- adc->ts_pend = NULL;
if (next) {
adc_dbg(adc, "new client is %p\n", next);
@@ -234,14 +246,20 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
if (client->nr_samples > 0) {
/* fire another conversion for this */
-
+ client->selected = 1;
client->select_cb(1);
s3c_adc_convert(adc);
} else {
local_irq_save(flags);
- (client->select_cb)(0);
+ client->selected = 0;
+ if (!adc->cur->is_ts)
+ list_del(&adc->cur->pend);
+ else
+ adc->ts_pend = NULL;
adc->cur = NULL;
+ (client->select_cb)(0);
+
s3c_adc_try(adc);
local_irq_restore(flags);
}
@@ -264,6 +282,7 @@ static int s3c_adc_probe(struct platform_device *pdev)
adc->pdev = pdev;
adc->prescale = S3C2410_ADCCON_PRSCVL(49);
+ adc->delay = 0x2710;
adc->irq = platform_get_irq(pdev, 1);
if (adc->irq <= 0) {
@@ -303,6 +322,7 @@ static int s3c_adc_probe(struct platform_device *pdev)
writel(adc->prescale | S3C2410_ADCCON_PRSCEN,
adc->regs + S3C2410_ADCCON);
+ writel(adc->delay, adc->regs + S3C2410_ADCDLY);
dev_info(dev, "attached adc driver\n");
@@ -346,18 +366,42 @@ static int s3c_adc_suspend(struct platform_device *pdev, pm_message_t state)
writel(con, adc->regs + S3C2410_ADCCON);
clk_disable(adc->clk);
+ disable_irq(IRQ_ADC);
+ if (!list_empty(&adc_pending) || adc->ts_pend)
+ dev_info(&pdev->dev, "We still have adc clients pending\n");
return 0;
}
+/* It seems this is not needed. This is under upstream review now. */
+static void adc_resume_work(struct work_struct *work)
+{
+ if (!adc_dev) /* Have no ADC here */
+ return;
+
+ if (!list_empty(&adc_pending) || adc_dev->ts_pend)
+ /* We still have adc clients pending */
+ s3c_adc_try(adc_dev);
+}
+
static int s3c_adc_resume(struct platform_device *pdev)
{
struct adc_device *adc = platform_get_drvdata(pdev);
+ enable_irq(IRQ_ADC);
clk_enable(adc->clk);
writel(adc->prescale | S3C2410_ADCCON_PRSCEN,
adc->regs + S3C2410_ADCCON);
+ writel(adc->delay, adc->regs + S3C2410_ADCDLY);
+
+ /* Schedule task if there are clients pending. */
+ if (!list_empty(&adc_pending) || adc_dev->ts_pend) {
+ INIT_WORK(&resume_work, adc_resume_work);
+ if (!schedule_work(&resume_work))
+ dev_err(&pdev->dev,
+ "Failed to schedule adc_resume work!\n");
+ }
return 0;
}
diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c
index 1932b7e0da1..ed4c19fa196 100644
--- a/arch/arm/plat-s3c24xx/cpu.c
+++ b/arch/arm/plat-s3c24xx/cpu.c
@@ -61,6 +61,7 @@ static const char name_s3c2410[] = "S3C2410";
static const char name_s3c2412[] = "S3C2412";
static const char name_s3c2440[] = "S3C2440";
static const char name_s3c2442[] = "S3C2442";
+static const char name_s3c2442b[] = "S3C2442B";
static const char name_s3c2443[] = "S3C2443";
static const char name_s3c2410a[] = "S3C2410A";
static const char name_s3c2440a[] = "S3C2440A";
@@ -112,6 +113,15 @@ static struct cpu_table cpu_ids[] __initdata = {
.name = name_s3c2442
},
{
+ .idcode = 0x32440aab,
+ .idmask = 0xffffffff,
+ .map_io = s3c244x_map_io,
+ .init_clocks = s3c244x_init_clocks,
+ .init_uarts = s3c244x_init_uarts,
+ .init = s3c2442_init,
+ .name = name_s3c2442b
+ },
+ {
.idcode = 0x32412001,
.idmask = 0xffffffff,
.map_io = s3c2412_map_io,
diff --git a/arch/arm/plat-s3c24xx/devs.c b/arch/arm/plat-s3c24xx/devs.c
index 4eb378c89a3..a89286b4a12 100644
--- a/arch/arm/plat-s3c24xx/devs.c
+++ b/arch/arm/plat-s3c24xx/devs.c
@@ -28,6 +28,8 @@
#include <mach/hardware.h>
#include <asm/irq.h>
+#include <mach/ts.h>
+
#include <plat/regs-serial.h>
#include <plat/udc.h>
@@ -199,6 +201,24 @@ struct platform_device s3c_device_nand = {
EXPORT_SYMBOL(s3c_device_nand);
+/* Touchscreen */
+
+struct platform_device s3c_device_ts = {
+ .name = "s3c2410-ts",
+ .id = -1,
+ .dev.parent = &s3c_device_adc.dev,
+};
+
+static struct s3c2410_ts_mach_info s3c2410ts_info;
+
+void set_s3c2410ts_info(const struct s3c2410_ts_mach_info *hard_s3c2410ts_info)
+{
+ memcpy(&s3c2410ts_info, hard_s3c2410ts_info,
+ sizeof(struct s3c2410_ts_mach_info));
+ s3c_device_ts.dev.platform_data = &s3c2410ts_info;
+}
+EXPORT_SYMBOL(set_s3c2410ts_info);
+
/* USB Device (Gadget)*/
static struct resource s3c_usbgadget_resource[] = {
diff --git a/arch/arm/plat-s3c24xx/include/plat/irq.h b/arch/arm/plat-s3c24xx/include/plat/irq.h
index 69e1be8bec3..11a866466d8 100644
--- a/arch/arm/plat-s3c24xx/include/plat/irq.h
+++ b/arch/arm/plat-s3c24xx/include/plat/irq.h
@@ -12,6 +12,7 @@
#include <linux/io.h>
+#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/regs-irq.h>
#include <mach/regs-gpio.h>
@@ -31,8 +32,15 @@ s3c_irqsub_mask(unsigned int irqno, unsigned int parentbit,
{
unsigned long mask;
unsigned long submask;
+#ifdef CONFIG_S3C2440_C_FIQ
+ unsigned long flags;
+#endif
submask = __raw_readl(S3C2410_INTSUBMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_save_flags(flags);
+ local_fiq_disable();
+#endif
mask = __raw_readl(S3C2410_INTMSK);
submask |= (1UL << (irqno - IRQ_S3CUART_RX0));
@@ -45,6 +53,9 @@ s3c_irqsub_mask(unsigned int irqno, unsigned int parentbit,
/* write back masks */
__raw_writel(submask, S3C2410_INTSUBMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_irq_restore(flags);
+#endif
}
@@ -53,8 +64,15 @@ s3c_irqsub_unmask(unsigned int irqno, unsigned int parentbit)
{
unsigned long mask;
unsigned long submask;
+#ifdef CONFIG_S3C2440_C_FIQ
+ unsigned long flags;
+#endif
submask = __raw_readl(S3C2410_INTSUBMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_save_flags(flags);
+ local_fiq_disable();
+#endif
mask = __raw_readl(S3C2410_INTMSK);
submask &= ~(1UL << (irqno - IRQ_S3CUART_RX0));
@@ -63,6 +81,9 @@ s3c_irqsub_unmask(unsigned int irqno, unsigned int parentbit)
/* write back masks */
__raw_writel(submask, S3C2410_INTSUBMSK);
__raw_writel(mask, S3C2410_INTMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_irq_restore(flags);
+#endif
}
diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
index 958737775ad..4b21ac9d693 100644
--- a/arch/arm/plat-s3c24xx/irq.c
+++ b/arch/arm/plat-s3c24xx/irq.c
@@ -28,6 +28,8 @@
#include <asm/mach/irq.h>
#include <plat/regs-irqtype.h>
+#include <mach/regs-irq.h>
+#include <mach/regs-gpio.h>
#include <plat/cpu.h>
#include <plat/pm.h>
@@ -37,12 +39,20 @@ static void
s3c_irq_mask(unsigned int irqno)
{
unsigned long mask;
-
+#ifdef CONFIG_S3C2440_C_FIQ
+ unsigned long flags;
+#endif
irqno -= IRQ_EINT0;
-
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_save_flags(flags);
+ local_fiq_disable();
+#endif
mask = __raw_readl(S3C2410_INTMSK);
mask |= 1UL << irqno;
__raw_writel(mask, S3C2410_INTMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_irq_restore(flags);
+#endif
}
static inline void
@@ -59,9 +69,19 @@ s3c_irq_maskack(unsigned int irqno)
{
unsigned long bitval = 1UL << (irqno - IRQ_EINT0);
unsigned long mask;
-
+#ifdef CONFIG_S3C2440_C_FIQ
+ unsigned long flags;
+#endif
+
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_save_flags(flags);
+ local_fiq_disable();
+#endif
mask = __raw_readl(S3C2410_INTMSK);
__raw_writel(mask|bitval, S3C2410_INTMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_irq_restore(flags);
+#endif
__raw_writel(bitval, S3C2410_SRCPND);
__raw_writel(bitval, S3C2410_INTPND);
@@ -72,15 +92,25 @@ static void
s3c_irq_unmask(unsigned int irqno)
{
unsigned long mask;
+#ifdef CONFIG_S3C2440_C_FIQ
+ unsigned long flags;
+#endif
if (irqno != IRQ_TIMER4 && irqno != IRQ_EINT8t23)
irqdbf2("s3c_irq_unmask %d\n", irqno);
irqno -= IRQ_EINT0;
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_save_flags(flags);
+ local_fiq_disable();
+#endif
mask = __raw_readl(S3C2410_INTMSK);
mask &= ~(1UL << irqno);
__raw_writel(mask, S3C2410_INTMSK);
+#ifdef CONFIG_S3C2440_C_FIQ
+ local_irq_restore(flags);
+#endif
}
struct irq_chip s3c_irq_level_chip = {
@@ -523,26 +553,26 @@ void __init s3c24xx_init_irq(void)
last = 0;
for (i = 0; i < 4; i++) {
- pend = __raw_readl(S3C2410_INTPND);
+ pend = __raw_readl(S3C2410_SUBSRCPND);
if (pend == 0 || pend == last)
break;
- __raw_writel(pend, S3C2410_SRCPND);
- __raw_writel(pend, S3C2410_INTPND);
- printk("irq: clearing pending status %08x\n", (int)pend);
+ printk("irq: clearing subpending status %08x\n", (int)pend);
+ __raw_writel(pend, S3C2410_SUBSRCPND);
last = pend;
}
last = 0;
for (i = 0; i < 4; i++) {
- pend = __raw_readl(S3C2410_SUBSRCPND);
+ pend = __raw_readl(S3C2410_INTPND);
if (pend == 0 || pend == last)
break;
- printk("irq: clearing subpending status %08x\n", (int)pend);
- __raw_writel(pend, S3C2410_SUBSRCPND);
+ __raw_writel(pend, S3C2410_SRCPND);
+ __raw_writel(pend, S3C2410_INTPND);
+ printk("irq: clearing pending status %08x\n", (int)pend);
last = pend;
}
diff --git a/arch/arm/plat-s3c24xx/pwm-clock.c b/arch/arm/plat-s3c24xx/pwm-clock.c
new file mode 100644
index 00000000000..d41cccd6a25
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/pwm-clock.c
@@ -0,0 +1,437 @@
+/* linux/arch/arm/plat-s3c24xx/pwm-clock.c
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ * Copyright (c) 2007, 2008 Ben Dooks
+ * Ben Dooks <ben-linux@fluff.org>
+ *
+ * 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.
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+
+#include <mach/regs-clock.h>
+#include <mach/regs-gpio.h>
+
+#include <asm/plat-s3c24xx/clock.h>
+#include <asm/plat-s3c24xx/cpu.h>
+
+#include <asm/plat-s3c/regs-timer.h>
+
+/* Each of the timers 0 through 5 go through the following
+ * clock tree, with the inputs depending on the timers.
+ *
+ * pclk ---- [ prescaler 0 ] -+---> timer 0
+ * +---> timer 1
+ *
+ * pclk ---- [ prescaler 1 ] -+---> timer 2
+ * +---> timer 3
+ * \---> timer 4
+ *
+ * Which are fed into the timers as so:
+ *
+ * prescaled 0 ---- [ div 2,4,8,16 ] ---\
+ * [mux] -> timer 0
+ * tclk 0 ------------------------------/
+ *
+ * prescaled 0 ---- [ div 2,4,8,16 ] ---\
+ * [mux] -> timer 1
+ * tclk 0 ------------------------------/
+ *
+ *
+ * prescaled 1 ---- [ div 2,4,8,16 ] ---\
+ * [mux] -> timer 2
+ * tclk 1 ------------------------------/
+ *
+ * prescaled 1 ---- [ div 2,4,8,16 ] ---\
+ * [mux] -> timer 3
+ * tclk 1 ------------------------------/
+ *
+ * prescaled 1 ---- [ div 2,4,8, 16 ] --\
+ * [mux] -> timer 4
+ * tclk 1 ------------------------------/
+ *
+ * Since the mux and the divider are tied together in the
+ * same register space, it is impossible to set the parent
+ * and the rate at the same time. To avoid this, we add an
+ * intermediate 'prescaled-and-divided' clock to select
+ * as the parent for the timer input clock called tdiv.
+ *
+ * prescaled clk --> pwm-tdiv ---\
+ * [ mux ] --> timer X
+ * tclk -------------------------/
+*/
+
+static unsigned long clk_pwm_scaler_getrate(struct clk *clk)
+{
+ unsigned long tcfg0 = __raw_readl(S3C2410_TCFG0);
+
+ if (clk->id == 1) {
+ tcfg0 &= S3C2410_TCFG_PRESCALER1_MASK;
+ tcfg0 >>= S3C2410_TCFG_PRESCALER1_SHIFT;
+ } else {
+ tcfg0 &= S3C2410_TCFG_PRESCALER0_MASK;
+ }
+
+ return clk_get_rate(clk->parent) / (tcfg0 + 1);
+}
+
+/* TODO - add set rate calls. */
+
+static struct clk clk_timer_scaler[] = {
+ [0] = {
+ .name = "pwm-scaler0",
+ .id = -1,
+ .get_rate = clk_pwm_scaler_getrate,
+ },
+ [1] = {
+ .name = "pwm-scaler1",
+ .id = -1,
+ .get_rate = clk_pwm_scaler_getrate,
+ },
+};
+
+static struct clk clk_timer_tclk[] = {
+ [0] = {
+ .name = "pwm-tclk0",
+ .id = -1,
+ },
+ [1] = {
+ .name = "pwm-tclk1",
+ .id = -1,
+ },
+};
+
+struct pwm_tdiv_clk {
+ struct clk clk;
+ unsigned int divisor;
+};
+
+static inline struct pwm_tdiv_clk *to_tdiv(struct clk *clk)
+{
+ return container_of(clk, struct pwm_tdiv_clk, clk);
+}
+
+static inline unsigned long tcfg_to_divisor(unsigned long tcfg1)
+{
+ return 1 << (1 + tcfg1);
+}
+
+static unsigned long clk_pwm_tdiv_get_rate(struct clk *clk)
+{
+ unsigned long tcfg1 = __raw_readl(S3C2410_TCFG1);
+ unsigned int divisor;
+
+ tcfg1 >>= S3C2410_TCFG1_SHIFT(clk->id);
+ tcfg1 &= S3C2410_TCFG1_MUX_MASK;
+
+ if (tcfg1 == S3C2410_TCFG1_MUX_TCLK)
+ divisor = to_tdiv(clk)->divisor;
+ else
+ divisor = tcfg_to_divisor(tcfg1);
+
+ return clk_get_rate(clk->parent) / divisor;
+}
+
+static unsigned long clk_pwm_tdiv_round_rate(struct clk *clk,
+ unsigned long rate)
+{
+ unsigned long parent_rate;
+ unsigned long divisor;
+
+ parent_rate = clk_get_rate(clk->parent);
+ divisor = parent_rate / rate;
+
+ if (divisor <= 2)
+ divisor = 2;
+ else if (divisor <= 4)
+ divisor = 4;
+ else if (divisor <= 8)
+ divisor = 8;
+ else
+ divisor = 16;
+
+ return parent_rate / divisor;
+}
+
+static unsigned long clk_pwm_tdiv_bits(struct pwm_tdiv_clk *divclk)
+{
+ unsigned long bits;
+
+ switch (divclk->divisor) {
+ case 2:
+ bits = S3C2410_TCFG1_MUX_DIV2;
+ break;
+ case 4:
+ bits = S3C2410_TCFG1_MUX_DIV4;
+ break;
+ case 8:
+ bits = S3C2410_TCFG1_MUX_DIV8;
+ break;
+ case 16:
+ default:
+ bits = S3C2410_TCFG1_MUX_DIV16;
+ break;
+ }
+
+ return bits;
+}
+
+static void clk_pwm_tdiv_update(struct pwm_tdiv_clk *divclk)
+{
+ unsigned long tcfg1 = __raw_readl(S3C2410_TCFG1);
+ unsigned long bits = clk_pwm_tdiv_bits(divclk);
+ unsigned long flags;
+ unsigned long shift = S3C2410_TCFG1_SHIFT(divclk->clk.id);
+
+ local_irq_save(flags);
+
+ tcfg1 = __raw_readl(S3C2410_TCFG1);
+ tcfg1 &= ~(S3C2410_TCFG1_MUX_MASK << shift);
+ tcfg1 |= bits << shift;
+ __raw_writel(tcfg1, S3C2410_TCFG1);
+
+ local_irq_restore(flags);
+}
+
+static int clk_pwm_tdiv_set_rate(struct clk *clk, unsigned long rate)
+{
+ struct pwm_tdiv_clk *divclk = to_tdiv(clk);
+ unsigned long tcfg1 = __raw_readl(S3C2410_TCFG1);
+ unsigned long parent_rate = clk_get_rate(clk->parent);
+ unsigned long divisor;
+
+ tcfg1 >>= S3C2410_TCFG1_SHIFT(clk->id);
+ tcfg1 &= S3C2410_TCFG1_MUX_MASK;
+
+ rate = clk_round_rate(clk, rate);
+ divisor = parent_rate / rate;
+
+ if (divisor > 16)
+ return -EINVAL;
+
+ divclk->divisor = divisor;
+
+ /* Update the current MUX settings if we are currently
+ * selected as the clock source for this clock. */
+
+ if (tcfg1 != S3C2410_TCFG1_MUX_TCLK)
+ clk_pwm_tdiv_update(divclk);
+
+ return 0;
+}
+
+static struct pwm_tdiv_clk clk_timer_tdiv[] = {
+ [0] = {
+ .clk = {
+ .name = "pwm-tdiv",
+ .parent = &clk_timer_scaler[0],
+ .get_rate = clk_pwm_tdiv_get_rate,
+ .set_rate = clk_pwm_tdiv_set_rate,
+ .round_rate = clk_pwm_tdiv_round_rate,
+ },
+ },
+ [1] = {
+ .clk = {
+ .name = "pwm-tdiv",
+ .parent = &clk_timer_scaler[0],
+ .get_rate = clk_pwm_tdiv_get_rate,
+ .set_rate = clk_pwm_tdiv_set_rate,
+ .round_rate = clk_pwm_tdiv_round_rate,
+ }
+ },
+ [2] = {
+ .clk = {
+ .name = "pwm-tdiv",
+ .parent = &clk_timer_scaler[1],
+ .get_rate = clk_pwm_tdiv_get_rate,
+ .set_rate = clk_pwm_tdiv_set_rate,
+ .round_rate = clk_pwm_tdiv_round_rate,
+ },
+ },
+ [3] = {
+ .clk = {
+ .name = "pwm-tdiv",
+ .parent = &clk_timer_scaler[1],
+ .get_rate = clk_pwm_tdiv_get_rate,
+ .set_rate = clk_pwm_tdiv_set_rate,
+ .round_rate = clk_pwm_tdiv_round_rate,
+ },
+ },
+ [4] = {
+ .clk = {
+ .name = "pwm-tdiv",
+ .parent = &clk_timer_scaler[1],
+ .get_rate = clk_pwm_tdiv_get_rate,
+ .set_rate = clk_pwm_tdiv_set_rate,
+ .round_rate = clk_pwm_tdiv_round_rate,
+ },
+ },
+};
+
+static int __init clk_pwm_tdiv_register(unsigned int id)
+{
+ struct pwm_tdiv_clk *divclk = &clk_timer_tdiv[id];
+ unsigned long tcfg1 = __raw_readl(S3C2410_TCFG1);
+
+ tcfg1 >>= S3C2410_TCFG1_SHIFT(id);
+ tcfg1 &= S3C2410_TCFG1_MUX_MASK;
+
+ divclk->clk.id = id;
+ divclk->divisor = tcfg_to_divisor(tcfg1);
+
+ return s3c24xx_register_clock(&divclk->clk);
+}
+
+static inline struct clk *s3c24xx_pwmclk_tclk(unsigned int id)
+{
+ return (id >= 2) ? &clk_timer_tclk[1] : &clk_timer_tclk[0];
+}
+
+static inline struct clk *s3c24xx_pwmclk_tdiv(unsigned int id)
+{
+ return &clk_timer_tdiv[id].clk;
+}
+
+static int clk_pwm_tin_set_parent(struct clk *clk, struct clk *parent)
+{
+ unsigned int id = clk->id;
+ unsigned long tcfg1;
+ unsigned long flags;
+ unsigned long bits;
+ unsigned long shift = S3C2410_TCFG1_SHIFT(id);
+
+ if (parent == s3c24xx_pwmclk_tclk(id))
+ bits = S3C2410_TCFG1_MUX_TCLK << shift;
+ else if (parent == s3c24xx_pwmclk_tdiv(id))
+ bits = clk_pwm_tdiv_bits(to_tdiv(parent)) << shift;
+ else
+ return -EINVAL;
+
+ clk->parent = parent;
+
+ local_irq_save(flags);
+
+ tcfg1 = __raw_readl(S3C2410_TCFG1);
+ tcfg1 &= ~(S3C2410_TCFG1_MUX_MASK << shift);
+ __raw_writel(tcfg1 | bits, S3C2410_TCFG1);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static struct clk clk_tin[] = {
+ [0] = {
+ .name = "pwm-tin",
+ .id = 0,
+ .set_parent = clk_pwm_tin_set_parent,
+ },
+ [1] = {
+ .name = "pwm-tin",
+ .id = 1,
+ .set_parent = clk_pwm_tin_set_parent,
+ },
+ [2] = {
+ .name = "pwm-tin",
+ .id = 2,
+ .set_parent = clk_pwm_tin_set_parent,
+ },
+ [3] = {
+ .name = "pwm-tin",
+ .id = 3,
+ .set_parent = clk_pwm_tin_set_parent,
+ },
+ [4] = {
+ .name = "pwm-tin",
+ .id = 4,
+ .set_parent = clk_pwm_tin_set_parent,
+ },
+};
+
+static __init int clk_pwm_tin_register(struct clk *pwm)
+{
+ unsigned long tcfg1 = __raw_readl(S3C2410_TCFG1);
+ unsigned int id = pwm->id;
+
+ struct clk *parent;
+ int ret;
+
+ ret = s3c24xx_register_clock(pwm);
+ if (ret < 0)
+ return ret;
+
+ tcfg1 >>= S3C2410_TCFG1_SHIFT(id);
+ tcfg1 &= S3C2410_TCFG1_MUX_MASK;
+
+ if (tcfg1 == S3C2410_TCFG1_MUX_TCLK)
+ parent = s3c24xx_pwmclk_tclk(id);
+ else
+ parent = s3c24xx_pwmclk_tdiv(id);
+
+ return clk_set_parent(pwm, parent);
+}
+
+static __init int s3c24xx_pwmclk_init(void)
+{
+ struct clk *clk_timers;
+ unsigned int clk;
+ int ret;
+
+ clk_timers = clk_get(NULL, "timers");
+ if (IS_ERR(clk_timers)) {
+ printk(KERN_ERR "%s: no parent clock\n", __func__);
+ return -EINVAL;
+ }
+
+ for (clk = 0; clk < ARRAY_SIZE(clk_timer_scaler); clk++) {
+ clk_timer_scaler[clk].parent = clk_timers;
+ ret = s3c24xx_register_clock(&clk_timer_scaler[clk]);
+ if (ret < 0) {
+ printk(KERN_ERR "error adding pwm scaler%d clock\n", clk);
+ goto err;
+ }
+ }
+
+ for (clk = 0; clk < ARRAY_SIZE(clk_timer_tclk); clk++) {
+ ret = s3c24xx_register_clock(&clk_timer_tclk[clk]);
+ if (ret < 0) {
+ printk(KERN_ERR "error adding pww tclk%d\n", clk);
+ goto err;
+ }
+ }
+
+ for (clk = 0; clk < ARRAY_SIZE(clk_timer_tdiv); clk++) {
+ ret = clk_pwm_tdiv_register(clk);
+ if (ret < 0) {
+ printk(KERN_ERR "error adding pwm%d tdiv clock\n", clk);
+ goto err;
+ }
+ }
+
+ for (clk = 0; clk < ARRAY_SIZE(clk_tin); clk++) {
+ ret = clk_pwm_tin_register(&clk_tin[clk]);
+ if (ret < 0) {
+ printk(KERN_ERR "error adding pwm%d tin clock\n", clk);
+ goto err;
+ }
+ }
+
+ return 0;
+
+ err:
+ return ret;
+}
+
+arch_initcall(s3c24xx_pwmclk_init);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 15:55:24 +0000