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[ARM] 3559/1: S3C2442: core and serial port
Patch from Ben Dooks Core support for the Samsung S3C2442, and the serial port driver update to allow the serial port blocks to be used. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks
Russell King
parent
66a9b49a37
commit
96ce2385dd
17 changed files with 668 additions and 229 deletions
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@ -70,6 +70,18 @@ config ARCH_S3C2440
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help
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Say Y here if you are using the SMDK2440.
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config SMDK2440_CPU2440
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bool "SMDK2440 with S3C2440 cpu module"
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depends on ARCH_S3C2440
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default y if ARCH_S3C2440
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select CPU_S3C2440
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config SMDK2440_CPU2442
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bool "SMDM2440 with S3C2442 cpu module"
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depends on ARCH_S3C2440
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select CPU_S3C2442
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config MACH_VR1000
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bool "Thorcom VR1000"
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select CPU_S3C2410
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@ -109,12 +121,26 @@ config CPU_S3C2410
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Support for S3C2410 and S3C2410A family from the S3C24XX line
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of Samsung Mobile CPUs.
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config CPU_S3C244X
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bool
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depends on ARCH_S3C2410 && (CPU_S3C2440 || CPU_S3C2442)
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help
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Support for S3C2440 and S3C2442 Samsung Mobile CPU based systems.
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config CPU_S3C2440
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bool
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depends on ARCH_S3C2410
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select CPU_S3C244X
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help
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Support for S3C2440 Samsung Mobile CPU based systems.
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config CPU_S3C2442
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bool
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depends on ARCH_S3C2420
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select CPU_S3C244X
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help
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Support for S3C2442 Samsung Mobile CPU based systems.
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comment "S3C2410 Boot"
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config S3C2410_BOOT_WATCHDOG
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@ -24,6 +24,11 @@ obj-$(CONFIG_S3C2410_DMA) += dma.o
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obj-$(CONFIG_PM) += pm.o sleep.o
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obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
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# S3C244X support
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obj-$(CONFIG_CPU_S3C244X) += s3c244x.o
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obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o
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# S3C2440 support
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obj-$(CONFIG_CPU_S3C2440) += s3c2440.o s3c2440-dsc.o
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@ -31,6 +36,11 @@ obj-$(CONFIG_CPU_S3C2440) += s3c2440-irq.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440-clock.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2410-gpio.o
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# S3C2442 support
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obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
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obj-$(CONFIG_CPU_S3C2442) += s3c2442-clock.o
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# bast extras
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obj-$(CONFIG_BAST_PC104_IRQ) += bast-irq.o
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@ -70,7 +70,7 @@ void inline s3c24xx_clk_enable(unsigned int clocks, unsigned int enable)
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clkcon &= ~clocks;
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/* ensure none of the special function bits set */
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clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER);
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clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER | 3);
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__raw_writel(clkcon, S3C2410_CLKCON);
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}
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@ -44,7 +44,9 @@
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#include "clock.h"
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#include "s3c2400.h"
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#include "s3c2410.h"
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#include "s3c244x.h"
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#include "s3c2440.h"
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#include "s3c2442.h"
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struct cpu_table {
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unsigned long idcode;
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@ -61,6 +63,7 @@ struct cpu_table {
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static const char name_s3c2400[] = "S3C2400";
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static const char name_s3c2410[] = "S3C2410";
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static const char name_s3c2440[] = "S3C2440";
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static const char name_s3c2442[] = "S3C2442";
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static const char name_s3c2410a[] = "S3C2410A";
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static const char name_s3c2440a[] = "S3C2440A";
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@ -86,21 +89,30 @@ static struct cpu_table cpu_ids[] __initdata = {
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{
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.idcode = 0x32440000,
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.idmask = 0xffffffff,
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.map_io = s3c2440_map_io,
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.init_clocks = s3c2440_init_clocks,
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.init_uarts = s3c2440_init_uarts,
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.map_io = s3c244x_map_io,
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.init_clocks = s3c244x_init_clocks,
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.init_uarts = s3c244x_init_uarts,
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.init = s3c2440_init,
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.name = name_s3c2440
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},
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{
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.idcode = 0x32440001,
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.idmask = 0xffffffff,
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.map_io = s3c2440_map_io,
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.init_clocks = s3c2440_init_clocks,
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.init_uarts = s3c2440_init_uarts,
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.map_io = s3c244x_map_io,
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.init_clocks = s3c244x_init_clocks,
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.init_uarts = s3c244x_init_uarts,
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.init = s3c2440_init,
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.name = name_s3c2440a
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},
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{
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.idcode = 0x32440aaa,
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.idmask = 0xffffffff,
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.map_io = s3c244x_map_io,
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.init_clocks = s3c244x_init_clocks,
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.init_uarts = s3c244x_init_uarts,
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.init = s3c2442_init,
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.name = name_s3c2442
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},
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{
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.idcode = 0x0, /* S3C2400 doesn't have an idcode */
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.idmask = 0xffffffff,
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@ -74,3 +74,4 @@ extern struct sys_timer s3c24xx_timer;
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/* system device classes */
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extern struct sysdev_class s3c2440_sysclass;
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extern struct sysdev_class s3c2442_sysclass;
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@ -100,73 +100,12 @@ static struct irqchip s3c_irq_wdtac97 = {
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.ack = s3c_irq_wdtac97_ack,
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};
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/* camera irq */
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static void s3c_irq_demux_cam(unsigned int irq,
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struct irqdesc *desc,
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struct pt_regs *regs)
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{
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unsigned int subsrc, submsk;
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struct irqdesc *mydesc;
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/* read the current pending interrupts, and the mask
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* for what it is available */
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subsrc = __raw_readl(S3C2410_SUBSRCPND);
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submsk = __raw_readl(S3C2410_INTSUBMSK);
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subsrc &= ~submsk;
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subsrc >>= 11;
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subsrc &= 3;
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if (subsrc != 0) {
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if (subsrc & 1) {
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mydesc = irq_desc + IRQ_S3C2440_CAM_C;
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desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc, regs);
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}
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if (subsrc & 2) {
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mydesc = irq_desc + IRQ_S3C2440_CAM_P;
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desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc, regs);
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}
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}
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}
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#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
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static void
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s3c_irq_cam_mask(unsigned int irqno)
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{
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s3c_irqsub_mask(irqno, INTMSK_CAM, 3<<11);
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}
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static void
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s3c_irq_cam_unmask(unsigned int irqno)
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{
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s3c_irqsub_unmask(irqno, INTMSK_CAM);
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}
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static void
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s3c_irq_cam_ack(unsigned int irqno)
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{
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s3c_irqsub_maskack(irqno, INTMSK_CAM, 3<<11);
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}
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static struct irqchip s3c_irq_cam = {
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.mask = s3c_irq_cam_mask,
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.unmask = s3c_irq_cam_unmask,
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.ack = s3c_irq_cam_ack,
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};
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static int s3c2440_irq_add(struct sys_device *sysdev)
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{
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unsigned int irqno;
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printk("S3C2440: IRQ Support\n");
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set_irq_chip(IRQ_NFCON, &s3c_irq_level_chip);
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set_irq_handler(IRQ_NFCON, do_level_IRQ);
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set_irq_flags(IRQ_NFCON, IRQF_VALID);
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/* add new chained handler for wdt, ac7 */
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set_irq_chip(IRQ_WDT, &s3c_irq_level_chip);
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@ -179,18 +118,6 @@ static int s3c2440_irq_add(struct sys_device *sysdev)
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set_irq_flags(irqno, IRQF_VALID);
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}
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/* add chained handler for camera */
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set_irq_chip(IRQ_CAM, &s3c_irq_level_chip);
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set_irq_handler(IRQ_CAM, do_level_IRQ);
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set_irq_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
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for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
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set_irq_chip(irqno, &s3c_irq_cam);
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set_irq_handler(irqno, do_level_IRQ);
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set_irq_flags(irqno, IRQF_VALID);
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}
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return 0;
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}
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@ -198,10 +125,10 @@ static struct sysdev_driver s3c2440_irq_driver = {
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.add = s3c2440_irq_add,
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};
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static int s3c24xx_irq_driver(void)
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static int s3c2440_irq_init(void)
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{
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return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
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}
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arch_initcall(s3c24xx_irq_driver);
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arch_initcall(s3c2440_irq_init);
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@ -1,6 +1,6 @@
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/* linux/arch/arm/mach-s3c2410/s3c2440.c
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*
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* Copyright (c) 2004-2005 Simtec Electronics
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* Copyright (c) 2004-2006 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* Samsung S3C2440 Mobile CPU support
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@ -8,16 +8,6 @@
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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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* Modifications:
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* 24-Aug-2004 BJD Start of s3c2440 support
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* 12-Oct-2004 BJD Moved clock info out to clock.c
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* 01-Nov-2004 BJD Fixed clock build code
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* 09-Nov-2004 BJD Added sysdev for power management
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* 04-Nov-2004 BJD New serial registration
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* 15-Nov-2004 BJD Rename the i2c device for the s3c2440
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* 14-Jan-2005 BJD Moved clock init code into seperate function
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* 14-Jan-2005 BJD Removed un-used clock bits
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*/
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#include <linux/kernel.h>
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@ -50,144 +40,20 @@
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#include "cpu.h"
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#include "pm.h"
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static struct map_desc s3c2440_iodesc[] __initdata = {
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IODESC_ENT(USBHOST),
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IODESC_ENT(CLKPWR),
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IODESC_ENT(LCD),
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IODESC_ENT(TIMER),
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IODESC_ENT(ADC),
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IODESC_ENT(WATCHDOG),
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};
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/* uart initialisation */
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void __init s3c2440_init_uarts(struct s3c2410_uartcfg *cfg, int no)
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{
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s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
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}
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#ifdef CONFIG_PM
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static struct sleep_save s3c2440_sleep[] = {
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SAVE_ITEM(S3C2440_DSC0),
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SAVE_ITEM(S3C2440_DSC1),
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SAVE_ITEM(S3C2440_GPJDAT),
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SAVE_ITEM(S3C2440_GPJCON),
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SAVE_ITEM(S3C2440_GPJUP)
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};
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static int s3c2440_suspend(struct sys_device *dev, pm_message_t state)
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{
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s3c2410_pm_do_save(s3c2440_sleep, ARRAY_SIZE(s3c2440_sleep));
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return 0;
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}
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static int s3c2440_resume(struct sys_device *dev)
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{
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s3c2410_pm_do_restore(s3c2440_sleep, ARRAY_SIZE(s3c2440_sleep));
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return 0;
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}
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#else
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#define s3c2440_suspend NULL
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#define s3c2440_resume NULL
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#endif
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struct sysdev_class s3c2440_sysclass = {
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set_kset_name("s3c2440-core"),
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.suspend = s3c2440_suspend,
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.resume = s3c2440_resume
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};
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static struct sys_device s3c2440_sysdev = {
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.cls = &s3c2440_sysclass,
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};
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void __init s3c2440_map_io(struct map_desc *mach_desc, int size)
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{
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/* register our io-tables */
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iotable_init(s3c2440_iodesc, ARRAY_SIZE(s3c2440_iodesc));
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iotable_init(mach_desc, size);
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/* rename any peripherals used differing from the s3c2410 */
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s3c_device_i2c.name = "s3c2440-i2c";
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s3c_device_nand.name = "s3c2440-nand";
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/* change irq for watchdog */
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s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
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s3c_device_wdt.resource[1].end = IRQ_S3C2440_WDT;
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}
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void __init s3c2440_init_clocks(int xtal)
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{
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unsigned long clkdiv;
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unsigned long camdiv;
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unsigned long hclk, fclk, pclk;
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int hdiv = 1;
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/* now we've got our machine bits initialised, work out what
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* clocks we've got */
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fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal) * 2;
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clkdiv = __raw_readl(S3C2410_CLKDIVN);
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camdiv = __raw_readl(S3C2440_CAMDIVN);
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/* work out clock scalings */
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switch (clkdiv & S3C2440_CLKDIVN_HDIVN_MASK) {
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case S3C2440_CLKDIVN_HDIVN_1:
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hdiv = 1;
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break;
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case S3C2440_CLKDIVN_HDIVN_2:
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hdiv = 2;
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break;
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case S3C2440_CLKDIVN_HDIVN_4_8:
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hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 8 : 4;
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break;
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case S3C2440_CLKDIVN_HDIVN_3_6:
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hdiv = (camdiv & S3C2440_CAMDIVN_HCLK3_HALF) ? 6 : 3;
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break;
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}
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hclk = fclk / hdiv;
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pclk = hclk / ((clkdiv & S3C2440_CLKDIVN_PDIVN)? 2:1);
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/* print brief summary of clocks, etc */
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printk("S3C2440: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
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print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
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/* initialise the clocks here, to allow other things like the
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* console to use them, and to add new ones after the initialisation
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*/
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s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
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}
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/* need to register class before we actually register the device, and
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* we also need to ensure that it has been initialised before any of the
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* drivers even try to use it (even if not on an s3c2440 based system)
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* as a driver which may support both 2410 and 2440 may try and use it.
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*/
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static int __init s3c2440_core_init(void)
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{
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return sysdev_class_register(&s3c2440_sysclass);
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}
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core_initcall(s3c2440_core_init);
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int __init s3c2440_init(void)
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{
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printk("S3C2440: Initialising architecture\n");
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/* change irq for watchdog */
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s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
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s3c_device_wdt.resource[1].end = IRQ_S3C2440_WDT;
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/* register our system device for everything else */
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return sysdev_register(&s3c2440_sysdev);
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}
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171
arch/arm/mach-s3c2410/s3c2442-clock.c
Normal file
171
arch/arm/mach-s3c2410/s3c2442-clock.c
Normal file
|
|
@ -0,0 +1,171 @@
|
|||
/* linux/arch/arm/mach-s3c2410/s3c2442-clock.c
|
||||
*
|
||||
* Copyright (c) 2004-2005 Simtec Electronics
|
||||
* http://armlinux.simtec.co.uk/
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* S3C2442 Clock 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.
|
||||
*
|
||||
* 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/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/sysdev.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/hardware.h>
|
||||
#include <asm/atomic.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#include <asm/arch/regs-clock.h>
|
||||
|
||||
#include "clock.h"
|
||||
#include "cpu.h"
|
||||
|
||||
/* S3C2442 extended clock support */
|
||||
|
||||
static unsigned long s3c2442_camif_upll_round(struct clk *clk,
|
||||
unsigned long rate)
|
||||
{
|
||||
unsigned long parent_rate = clk_get_rate(clk->parent);
|
||||
int div;
|
||||
|
||||
if (rate > parent_rate)
|
||||
return parent_rate;
|
||||
|
||||
div = parent_rate / rate;
|
||||
|
||||
if (div == 3)
|
||||
return parent_rate / 3;
|
||||
|
||||
/* note, we remove the +/- 1 calculations for the divisor */
|
||||
|
||||
div /= 2;
|
||||
|
||||
if (div < 1)
|
||||
div = 1;
|
||||
else if (div > 16)
|
||||
div = 16;
|
||||
|
||||
return parent_rate / (div * 2);
|
||||
}
|
||||
|
||||
static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate)
|
||||
{
|
||||
unsigned long parent_rate = clk_get_rate(clk->parent);
|
||||
unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
|
||||
|
||||
rate = s3c2442_camif_upll_round(clk, rate);
|
||||
|
||||
camdivn &= ~S3C2442_CAMDIVN_CAMCLK_DIV3;
|
||||
|
||||
if (rate == parent_rate) {
|
||||
camdivn &= ~S3C2440_CAMDIVN_CAMCLK_SEL;
|
||||
} else if ((parent_rate / rate) == 3) {
|
||||
camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
|
||||
camdivn |= S3C2442_CAMDIVN_CAMCLK_DIV3;
|
||||
} else {
|
||||
camdivn &= ~S3C2440_CAMDIVN_CAMCLK_MASK;
|
||||
camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
|
||||
camdivn |= (((parent_rate / rate) / 2) - 1);
|
||||
}
|
||||
|
||||
__raw_writel(camdivn, S3C2440_CAMDIVN);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Extra S3C2442 clocks */
|
||||
|
||||
static struct clk s3c2442_clk_cam = {
|
||||
.name = "camif",
|
||||
.id = -1,
|
||||
.enable = s3c24xx_clkcon_enable,
|
||||
.ctrlbit = S3C2440_CLKCON_CAMERA,
|
||||
};
|
||||
|
||||
static struct clk s3c2442_clk_cam_upll = {
|
||||
.name = "camif-upll",
|
||||
.id = -1,
|
||||
.set_rate = s3c2442_camif_upll_setrate,
|
||||
.round_rate = s3c2442_camif_upll_round,
|
||||
};
|
||||
|
||||
static int s3c2442_clk_add(struct sys_device *sysdev)
|
||||
{
|
||||
unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
|
||||
unsigned long clkdivn;
|
||||
struct clk *clk_h;
|
||||
struct clk *clk_p;
|
||||
struct clk *clk_upll;
|
||||
|
||||
printk("S3C2442: Clock Support, DVS %s\n",
|
||||
(camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
|
||||
|
||||
clk_p = clk_get(NULL, "pclk");
|
||||
clk_h = clk_get(NULL, "hclk");
|
||||
clk_upll = clk_get(NULL, "upll");
|
||||
|
||||
if (IS_ERR(clk_p) || IS_ERR(clk_h) || IS_ERR(clk_upll)) {
|
||||
printk(KERN_ERR "S3C2442: Failed to get parent clocks\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* check rate of UPLL, and if it is near 96MHz, then change
|
||||
* to using half the UPLL rate for the system */
|
||||
|
||||
if (clk_get_rate(clk_upll) > (94 * MHZ)) {
|
||||
clk_usb_bus.rate = clk_get_rate(clk_upll) / 2;
|
||||
|
||||
mutex_lock(&clocks_mutex);
|
||||
|
||||
clkdivn = __raw_readl(S3C2410_CLKDIVN);
|
||||
clkdivn |= S3C2440_CLKDIVN_UCLK;
|
||||
__raw_writel(clkdivn, S3C2410_CLKDIVN);
|
||||
|
||||
mutex_unlock(&clocks_mutex);
|
||||
}
|
||||
|
||||
s3c2442_clk_cam.parent = clk_h;
|
||||
s3c2442_clk_cam_upll.parent = clk_upll;
|
||||
|
||||
s3c24xx_register_clock(&s3c2442_clk_cam);
|
||||
s3c24xx_register_clock(&s3c2442_clk_cam_upll);
|
||||
|
||||
clk_disable(&s3c2442_clk_cam);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct sysdev_driver s3c2442_clk_driver = {
|
||||
.add = s3c2442_clk_add,
|
||||
};
|
||||
|
||||
static __init int s3c2442_clk_init(void)
|
||||
{
|
||||
return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_clk_driver);
|
||||
}
|
||||
|
||||
arch_initcall(s3c2442_clk_init);
|
||||
52
arch/arm/mach-s3c2410/s3c2442.c
Normal file
52
arch/arm/mach-s3c2410/s3c2442.c
Normal file
|
|
@ -0,0 +1,52 @@
|
|||
/* linux/arch/arm/mach-s3c2410/s3c2440.c
|
||||
*
|
||||
* Copyright (c) 2006 Simtec Electronics
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* Samsung S3C2442 Mobile CPU support
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/timer.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/sysdev.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/mach/irq.h>
|
||||
|
||||
#include <asm/hardware.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/irq.h>
|
||||
|
||||
#include <asm/arch/regs-clock.h>
|
||||
#include <asm/arch/regs-serial.h>
|
||||
#include <asm/arch/regs-gpio.h>
|
||||
#include <asm/arch/regs-gpioj.h>
|
||||
#include <asm/arch/regs-dsc.h>
|
||||
|
||||
#include "s3c2442.h"
|
||||
#include "clock.h"
|
||||
#include "devs.h"
|
||||
#include "cpu.h"
|
||||
#include "pm.h"
|
||||
|
||||
static struct sys_device s3c2442_sysdev = {
|
||||
.cls = &s3c2442_sysclass,
|
||||
};
|
||||
|
||||
int __init s3c2442_init(void)
|
||||
{
|
||||
printk("S3C2442: Initialising architecture\n");
|
||||
|
||||
return sysdev_register(&s3c2442_sysdev);
|
||||
}
|
||||
17
arch/arm/mach-s3c2410/s3c2442.h
Normal file
17
arch/arm/mach-s3c2410/s3c2442.h
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
/* arch/arm/mach-s3c2410/s3c2442.h
|
||||
*
|
||||
* Copyright (c) 2006 Simtec Electronics
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* Header file for s3c2442 cpu support
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_CPU_S3C2442
|
||||
extern int s3c2442_init(void);
|
||||
#else
|
||||
#define s3c2442_init NULL
|
||||
#endif
|
||||
142
arch/arm/mach-s3c2410/s3c244x-irq.c
Normal file
142
arch/arm/mach-s3c2410/s3c244x-irq.c
Normal file
|
|
@ -0,0 +1,142 @@
|
|||
/* linux/arch/arm/mach-s3c2410/s3c2440-irq.c
|
||||
*
|
||||
* Copyright (c) 2003,2004 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
|
||||
*
|
||||
* Changelog:
|
||||
* 25-Jul-2005 BJD Split from irq.c
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/ptrace.h>
|
||||
#include <linux/sysdev.h>
|
||||
|
||||
#include <asm/hardware.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#include <asm/mach/irq.h>
|
||||
|
||||
#include <asm/arch/regs-irq.h>
|
||||
#include <asm/arch/regs-gpio.h>
|
||||
|
||||
#include "cpu.h"
|
||||
#include "pm.h"
|
||||
#include "irq.h"
|
||||
|
||||
/* camera irq */
|
||||
|
||||
static void s3c_irq_demux_cam(unsigned int irq,
|
||||
struct irqdesc *desc,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
unsigned int subsrc, submsk;
|
||||
struct irqdesc *mydesc;
|
||||
|
||||
/* read the current pending interrupts, and the mask
|
||||
* for what it is available */
|
||||
|
||||
subsrc = __raw_readl(S3C2410_SUBSRCPND);
|
||||
submsk = __raw_readl(S3C2410_INTSUBMSK);
|
||||
|
||||
subsrc &= ~submsk;
|
||||
subsrc >>= 11;
|
||||
subsrc &= 3;
|
||||
|
||||
if (subsrc != 0) {
|
||||
if (subsrc & 1) {
|
||||
mydesc = irq_desc + IRQ_S3C2440_CAM_C;
|
||||
desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc, regs);
|
||||
}
|
||||
if (subsrc & 2) {
|
||||
mydesc = irq_desc + IRQ_S3C2440_CAM_P;
|
||||
desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc, regs);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
|
||||
|
||||
static void
|
||||
s3c_irq_cam_mask(unsigned int irqno)
|
||||
{
|
||||
s3c_irqsub_mask(irqno, INTMSK_CAM, 3<<11);
|
||||
}
|
||||
|
||||
static void
|
||||
s3c_irq_cam_unmask(unsigned int irqno)
|
||||
{
|
||||
s3c_irqsub_unmask(irqno, INTMSK_CAM);
|
||||
}
|
||||
|
||||
static void
|
||||
s3c_irq_cam_ack(unsigned int irqno)
|
||||
{
|
||||
s3c_irqsub_maskack(irqno, INTMSK_CAM, 3<<11);
|
||||
}
|
||||
|
||||
static struct irqchip s3c_irq_cam = {
|
||||
.mask = s3c_irq_cam_mask,
|
||||
.unmask = s3c_irq_cam_unmask,
|
||||
.ack = s3c_irq_cam_ack,
|
||||
};
|
||||
|
||||
static int s3c244x_irq_add(struct sys_device *sysdev)
|
||||
{
|
||||
unsigned int irqno;
|
||||
|
||||
set_irq_chip(IRQ_NFCON, &s3c_irq_level_chip);
|
||||
set_irq_handler(IRQ_NFCON, do_level_IRQ);
|
||||
set_irq_flags(IRQ_NFCON, IRQF_VALID);
|
||||
|
||||
/* add chained handler for camera */
|
||||
|
||||
set_irq_chip(IRQ_CAM, &s3c_irq_level_chip);
|
||||
set_irq_handler(IRQ_CAM, do_level_IRQ);
|
||||
set_irq_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
|
||||
|
||||
for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
|
||||
set_irq_chip(irqno, &s3c_irq_cam);
|
||||
set_irq_handler(irqno, do_level_IRQ);
|
||||
set_irq_flags(irqno, IRQF_VALID);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct sysdev_driver s3c244x_irq_driver = {
|
||||
.add = s3c244x_irq_add,
|
||||
};
|
||||
|
||||
static int s3c2440_irq_init(void)
|
||||
{
|
||||
return sysdev_driver_register(&s3c2440_sysclass, &s3c244x_irq_driver);
|
||||
}
|
||||
|
||||
arch_initcall(s3c2440_irq_init);
|
||||
|
||||
|
||||
static int s3c2442_irq_init(void)
|
||||
{
|
||||
return sysdev_driver_register(&s3c2442_sysclass, &s3c244x_irq_driver);
|
||||
}
|
||||
|
||||
arch_initcall(s3c2442_irq_init);
|
||||
182
arch/arm/mach-s3c2410/s3c244x.c
Normal file
182
arch/arm/mach-s3c2410/s3c244x.c
Normal file
|
|
@ -0,0 +1,182 @@
|
|||
/* linux/arch/arm/mach-s3c2410/s3c244x.c
|
||||
*
|
||||
* Copyright (c) 2004-2006 Simtec Electronics
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* Samsung S3C2440 and S3C2442 Mobile CPU support
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/timer.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/sysdev.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/mach/irq.h>
|
||||
|
||||
#include <asm/hardware.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/irq.h>
|
||||
|
||||
#include <asm/arch/regs-clock.h>
|
||||
#include <asm/arch/regs-serial.h>
|
||||
#include <asm/arch/regs-gpio.h>
|
||||
#include <asm/arch/regs-gpioj.h>
|
||||
#include <asm/arch/regs-dsc.h>
|
||||
|
||||
#include "s3c2440.h"
|
||||
#include "s3c244x.h"
|
||||
#include "clock.h"
|
||||
#include "devs.h"
|
||||
#include "cpu.h"
|
||||
#include "pm.h"
|
||||
|
||||
static struct map_desc s3c244x_iodesc[] __initdata = {
|
||||
IODESC_ENT(CLKPWR),
|
||||
IODESC_ENT(TIMER),
|
||||
IODESC_ENT(WATCHDOG),
|
||||
IODESC_ENT(LCD),
|
||||
IODESC_ENT(ADC),
|
||||
IODESC_ENT(USBHOST),
|
||||
};
|
||||
|
||||
/* uart initialisation */
|
||||
|
||||
void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
|
||||
{
|
||||
s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
|
||||
}
|
||||
|
||||
void __init s3c244x_map_io(struct map_desc *mach_desc, int size)
|
||||
{
|
||||
/* register our io-tables */
|
||||
|
||||
iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
|
||||
iotable_init(mach_desc, size);
|
||||
|
||||
/* rename any peripherals used differing from the s3c2410 */
|
||||
|
||||
s3c_device_i2c.name = "s3c2440-i2c";
|
||||
s3c_device_nand.name = "s3c2440-nand";
|
||||
}
|
||||
|
||||
void __init s3c244x_init_clocks(int xtal)
|
||||
{
|
||||
unsigned long clkdiv;
|
||||
unsigned long camdiv;
|
||||
unsigned long hclk, fclk, pclk;
|
||||
int hdiv = 1;
|
||||
|
||||
/* now we've got our machine bits initialised, work out what
|
||||
* clocks we've got */
|
||||
|
||||
fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal) * 2;
|
||||
|
||||
clkdiv = __raw_readl(S3C2410_CLKDIVN);
|
||||
camdiv = __raw_readl(S3C2440_CAMDIVN);
|
||||
|
||||
/* work out clock scalings */
|
||||
|
||||
switch (clkdiv & S3C2440_CLKDIVN_HDIVN_MASK) {
|
||||
case S3C2440_CLKDIVN_HDIVN_1:
|
||||
hdiv = 1;
|
||||
break;
|
||||
|
||||
case S3C2440_CLKDIVN_HDIVN_2:
|
||||
hdiv = 2;
|
||||
break;
|
||||
|
||||
case S3C2440_CLKDIVN_HDIVN_4_8:
|
||||
hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 8 : 4;
|
||||
break;
|
||||
|
||||
case S3C2440_CLKDIVN_HDIVN_3_6:
|
||||
hdiv = (camdiv & S3C2440_CAMDIVN_HCLK3_HALF) ? 6 : 3;
|
||||
break;
|
||||
}
|
||||
|
||||
hclk = fclk / hdiv;
|
||||
pclk = hclk / ((clkdiv & S3C2440_CLKDIVN_PDIVN)? 2:1);
|
||||
|
||||
/* print brief summary of clocks, etc */
|
||||
|
||||
printk("S3C244X: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
|
||||
print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
|
||||
|
||||
/* initialise the clocks here, to allow other things like the
|
||||
* console to use them, and to add new ones after the initialisation
|
||||
*/
|
||||
|
||||
s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
|
||||
static struct sleep_save s3c244x_sleep[] = {
|
||||
SAVE_ITEM(S3C2440_DSC0),
|
||||
SAVE_ITEM(S3C2440_DSC1),
|
||||
SAVE_ITEM(S3C2440_GPJDAT),
|
||||
SAVE_ITEM(S3C2440_GPJCON),
|
||||
SAVE_ITEM(S3C2440_GPJUP)
|
||||
};
|
||||
|
||||
static int s3c244x_suspend(struct sys_device *dev, pm_message_t state)
|
||||
{
|
||||
s3c2410_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s3c244x_resume(struct sys_device *dev)
|
||||
{
|
||||
s3c2410_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
|
||||
return 0;
|
||||
}
|
||||
|
||||
#else
|
||||
#define s3c244x_suspend NULL
|
||||
#define s3c244x_resume NULL
|
||||
#endif
|
||||
|
||||
/* Since the S3C2442 and S3C2440 share items, put both sysclasses here */
|
||||
|
||||
struct sysdev_class s3c2440_sysclass = {
|
||||
set_kset_name("s3c2440-core"),
|
||||
.suspend = s3c244x_suspend,
|
||||
.resume = s3c244x_resume
|
||||
};
|
||||
|
||||
struct sysdev_class s3c2442_sysclass = {
|
||||
set_kset_name("s3c2442-core"),
|
||||
.suspend = s3c244x_suspend,
|
||||
.resume = s3c244x_resume
|
||||
};
|
||||
|
||||
/* need to register class before we actually register the device, and
|
||||
* we also need to ensure that it has been initialised before any of the
|
||||
* drivers even try to use it (even if not on an s3c2440 based system)
|
||||
* as a driver which may support both 2410 and 2440 may try and use it.
|
||||
*/
|
||||
|
||||
static int __init s3c2440_core_init(void)
|
||||
{
|
||||
return sysdev_class_register(&s3c2440_sysclass);
|
||||
}
|
||||
|
||||
core_initcall(s3c2440_core_init);
|
||||
|
||||
static int __init s3c2442_core_init(void)
|
||||
{
|
||||
return sysdev_class_register(&s3c2442_sysclass);
|
||||
}
|
||||
|
||||
core_initcall(s3c2442_core_init);
|
||||
25
arch/arm/mach-s3c2410/s3c244x.h
Normal file
25
arch/arm/mach-s3c2410/s3c244x.h
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
/* arch/arm/mach-s3c2410/s3c2440.h
|
||||
*
|
||||
* Copyright (c) 2004-2005 Simtec Electronics
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* Header file for S3C2440 and S3C2442 cpu support
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
|
||||
|
||||
extern void s3c244x_map_io(struct map_desc *mach_desc, int size);
|
||||
|
||||
extern void s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no);
|
||||
|
||||
extern void s3c244x_init_clocks(int xtal);
|
||||
|
||||
#else
|
||||
#define s3c244x_init_clocks NULL
|
||||
#define s3c244x_init_uarts NULL
|
||||
#define s3c244x_map_io NULL
|
||||
#endif
|
||||
|
|
@ -1365,7 +1365,7 @@ static inline void s3c2410_serial_exit(void)
|
|||
|
||||
#endif /* CONFIG_CPU_S3C2410 */
|
||||
|
||||
#ifdef CONFIG_CPU_S3C2440
|
||||
#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
|
||||
|
||||
static int s3c2440_serial_setsource(struct uart_port *port,
|
||||
struct s3c24xx_uart_clksrc *clk)
|
||||
|
|
|
|||
|
|
@ -114,7 +114,7 @@ s3c2410_get_pll(unsigned int pllval, unsigned int baseclk)
|
|||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#ifdef CONFIG_CPU_S3C2440
|
||||
#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442)
|
||||
|
||||
/* extra registers */
|
||||
#define S3C2440_CAMDIVN S3C2410_CLKREG(0x18)
|
||||
|
|
@ -136,7 +136,9 @@ s3c2410_get_pll(unsigned int pllval, unsigned int baseclk)
|
|||
#define S3C2440_CAMDIVN_HCLK4_HALF (1<<9)
|
||||
#define S3C2440_CAMDIVN_DVSEN (1<<12)
|
||||
|
||||
#endif /* CONFIG_CPU_S3C2440 */
|
||||
#define S3C2442_CAMDIVN_CAMCLK_DIV3 (1<<5)
|
||||
|
||||
#endif /* CONFIG_CPU_S3C2440 or CONFIG_CPU_S3C2442 */
|
||||
|
||||
|
||||
#endif /* __ASM_ARM_REGS_CLOCK */
|
||||
|
|
|
|||
|
|
@ -450,12 +450,14 @@
|
|||
#define S3C2410_GPD0_OUTP (0x01 << 0)
|
||||
#define S3C2410_GPD0_VD8 (0x02 << 0)
|
||||
#define S3C2400_GPD0_VFRAME (0x02 << 0)
|
||||
#define S3C2442_GPD0_nSPICS1 (0x03 << 0)
|
||||
|
||||
#define S3C2410_GPD1 S3C2410_GPIONO(S3C2410_GPIO_BANKD, 1)
|
||||
#define S3C2410_GPD1_INP (0x00 << 2)
|
||||
#define S3C2410_GPD1_OUTP (0x01 << 2)
|
||||
#define S3C2410_GPD1_VD9 (0x02 << 2)
|
||||
#define S3C2400_GPD1_VM (0x02 << 2)
|
||||
#define S3C2442_GPD1_SPICLK1 (0x03 << 2)
|
||||
|
||||
#define S3C2410_GPD2 S3C2410_GPIONO(S3C2410_GPIO_BANKD, 2)
|
||||
#define S3C2410_GPD2_INP (0x00 << 4)
|
||||
|
|
@ -858,6 +860,7 @@
|
|||
#define S3C2410_GPG12_OUTP (0x01 << 24)
|
||||
#define S3C2410_GPG12_EINT20 (0x02 << 24)
|
||||
#define S3C2410_GPG12_XMON (0x03 << 24)
|
||||
#define S3C2442_GPG12_nSPICS0 (0x03 << 24)
|
||||
|
||||
#define S3C2410_GPG13 S3C2410_GPIONO(S3C2410_GPIO_BANKG, 13)
|
||||
#define S3C2410_GPG13_INP (0x00 << 26)
|
||||
|
|
@ -943,6 +946,7 @@
|
|||
#define S3C2410_GPH9_INP (0x00 << 18)
|
||||
#define S3C2410_GPH9_OUTP (0x01 << 18)
|
||||
#define S3C2410_GPH9_CLKOUT0 (0x02 << 18)
|
||||
#define S3C2442_GPH9_nSPICS0 (0x03 << 18)
|
||||
|
||||
#define S3C2410_GPH10 S3C2410_GPIONO(S3C2410_GPIO_BANKH, 10)
|
||||
#define S3C2410_GPH10_INP (0x00 << 20)
|
||||
|
|
@ -1051,6 +1055,7 @@
|
|||
#define S3C2410_GSTATUS1_IDMASK (0xffff0000)
|
||||
#define S3C2410_GSTATUS1_2410 (0x32410000)
|
||||
#define S3C2410_GSTATUS1_2440 (0x32440000)
|
||||
#define S3C2410_GSTATUS1_2442 (0x32440aaa)
|
||||
|
||||
#define S3C2410_GSTATUS2_WTRESET (1<<2)
|
||||
#define S3C2410_GSTATUS2_OFFRESET (1<<1)
|
||||
|
|
|
|||
|
|
@ -82,7 +82,8 @@ static void putc(int ch)
|
|||
while (1) {
|
||||
level = uart_rd(S3C2410_UFSTAT);
|
||||
|
||||
if (cpuid == S3C2410_GSTATUS1_2440) {
|
||||
if (cpuid == S3C2410_GSTATUS1_2440 ||
|
||||
cpuid == S3C2410_GSTATUS1_2442) {
|
||||
level &= S3C2440_UFSTAT_TXMASK;
|
||||
level >>= S3C2440_UFSTAT_TXSHIFT;
|
||||
} else {
|
||||
|
|
@ -130,7 +131,7 @@ static void arch_decomp_wdog_start(void)
|
|||
{
|
||||
__raw_writel(WDOG_COUNT, S3C2410_WTDAT);
|
||||
__raw_writel(WDOG_COUNT, S3C2410_WTCNT);
|
||||
__raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x40), S3C2410_WTCON);
|
||||
__raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x80), S3C2410_WTCON);
|
||||
}
|
||||
|
||||
#else
|
||||
|
|
|
|||
Loading…
Reference in a new issue