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Diffstat (limited to 'arch/arm/mach-exynos/common.c')
-rw-r--r--arch/arm/mach-exynos/common.c547
1 files changed, 9 insertions, 538 deletions
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index f7e504b7874d..81e6320ca091 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -40,20 +40,9 @@
#include <mach/regs-irq.h>
#include <mach/regs-pmu.h>
-#include <mach/regs-gpio.h>
-#include <mach/irqs.h>
#include <plat/cpu.h>
-#include <plat/devs.h>
#include <plat/pm.h>
-#include <plat/sdhci.h>
-#include <plat/gpio-cfg.h>
-#include <plat/adc-core.h>
-#include <plat/fb-core.h>
-#include <plat/fimc-core.h>
-#include <plat/iic-core.h>
-#include <plat/tv-core.h>
-#include <plat/spi-core.h>
#include <plat/regs-serial.h>
#include "common.h"
@@ -69,31 +58,25 @@ static const char name_exynos5440[] = "EXYNOS5440";
static void exynos4_map_io(void);
static void exynos5_map_io(void);
static void exynos5440_map_io(void);
-static void exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no);
static int exynos_init(void);
-unsigned long xxti_f = 0, xusbxti_f = 0;
-
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = EXYNOS4210_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
- .init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4210,
}, {
.idcode = EXYNOS4212_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
- .init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4212,
}, {
.idcode = EXYNOS4412_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
- .init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4412,
}, {
@@ -113,15 +96,6 @@ static struct cpu_table cpu_ids[] __initdata = {
/* Initial IO mappings */
-static struct map_desc exynos_iodesc[] __initdata = {
- {
- .virtual = (unsigned long)S5P_VA_CHIPID,
- .pfn = __phys_to_pfn(EXYNOS_PA_CHIPID),
- .length = SZ_4K,
- .type = MT_DEVICE,
- },
-};
-
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual = (unsigned long)S3C_VA_SYS,
@@ -304,13 +278,6 @@ static struct map_desc exynos5440_iodesc0[] __initdata = {
},
};
-static struct samsung_pwm_variant exynos4_pwm_variant = {
- .bits = 32,
- .div_base = 0,
- .has_tint_cstat = true,
- .tclk_mask = 0,
-};
-
void exynos4_restart(char mode, const char *cmd)
{
__raw_writel(0x1, S5P_SWRESET);
@@ -353,8 +320,7 @@ void __init exynos_init_late(void)
exynos_pm_late_initcall();
}
-#ifdef CONFIG_OF
-int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
+static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
int depth, void *data)
{
struct map_desc iodesc;
@@ -376,7 +342,6 @@ int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
iotable_init(&iodesc, 1);
return 1;
}
-#endif
/*
* exynos_map_io
@@ -384,19 +349,11 @@ int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
* register the standard cpu IO areas
*/
-void __init exynos_init_io(struct map_desc *mach_desc, int size)
+void __init exynos_init_io(void)
{
debug_ll_io_init();
-#ifdef CONFIG_OF
- if (initial_boot_params)
- of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
- else
-#endif
- iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
-
- if (mach_desc)
- iotable_init(mach_desc, size);
+ of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
/* detect cpu id and rev. */
s5p_init_cpu(S5P_VA_CHIPID);
@@ -417,34 +374,6 @@ static void __init exynos4_map_io(void)
iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
if (soc_is_exynos4212() || soc_is_exynos4412())
iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
-
- /* initialize device information early */
- exynos4_default_sdhci0();
- exynos4_default_sdhci1();
- exynos4_default_sdhci2();
- exynos4_default_sdhci3();
-
- s3c_adc_setname("samsung-adc-v3");
-
- s3c_fimc_setname(0, "exynos4-fimc");
- s3c_fimc_setname(1, "exynos4-fimc");
- s3c_fimc_setname(2, "exynos4-fimc");
- s3c_fimc_setname(3, "exynos4-fimc");
-
- s3c_sdhci_setname(0, "exynos4-sdhci");
- s3c_sdhci_setname(1, "exynos4-sdhci");
- s3c_sdhci_setname(2, "exynos4-sdhci");
- s3c_sdhci_setname(3, "exynos4-sdhci");
-
- /* The I2C bus controllers are directly compatible with s3c2440 */
- s3c_i2c0_setname("s3c2440-i2c");
- s3c_i2c1_setname("s3c2440-i2c");
- s3c_i2c2_setname("s3c2440-i2c");
-
- s5p_fb_setname(0, "exynos4-fb");
- s5p_hdmi_setname("exynos4-hdmi");
-
- s3c64xx_spi_setname("exynos4210-spi");
}
static void __init exynos5_map_io(void)
@@ -460,81 +389,10 @@ static void __init exynos5440_map_io(void)
iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));
}
-void __init exynos_set_timer_source(u8 channels)
-{
- exynos4_pwm_variant.output_mask = BIT(SAMSUNG_PWM_NUM) - 1;
- exynos4_pwm_variant.output_mask &= ~channels;
-}
-
void __init exynos_init_time(void)
{
- unsigned int timer_irqs[SAMSUNG_PWM_NUM] = {
- EXYNOS4_IRQ_TIMER0_VIC, EXYNOS4_IRQ_TIMER1_VIC,
- EXYNOS4_IRQ_TIMER2_VIC, EXYNOS4_IRQ_TIMER3_VIC,
- EXYNOS4_IRQ_TIMER4_VIC,
- };
-
- if (of_have_populated_dt()) {
-#ifdef CONFIG_OF
- of_clk_init(NULL);
- clocksource_of_init();
-#endif
- } else {
- /* todo: remove after migrating legacy E4 platforms to dt */
-#ifdef CONFIG_ARCH_EXYNOS4
- exynos4_clk_init(NULL, !soc_is_exynos4210(), S5P_VA_CMU, readl(S5P_VA_CHIPID + 8) & 1);
- exynos4_clk_register_fixed_ext(xxti_f, xusbxti_f);
-#endif
-#ifdef CONFIG_CLKSRC_SAMSUNG_PWM
- if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
- samsung_pwm_clocksource_init(S3C_VA_TIMER,
- timer_irqs, &exynos4_pwm_variant);
- else
-#endif
- mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0,
- EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1);
- }
-}
-
-static unsigned int max_combiner_nr(void)
-{
- if (soc_is_exynos5250())
- return EXYNOS5_MAX_COMBINER_NR;
- else if (soc_is_exynos4412())
- return EXYNOS4412_MAX_COMBINER_NR;
- else if (soc_is_exynos4212())
- return EXYNOS4212_MAX_COMBINER_NR;
- else
- return EXYNOS4210_MAX_COMBINER_NR;
-}
-
-
-void __init exynos4_init_irq(void)
-{
- unsigned int gic_bank_offset;
-
- gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
-
- if (!of_have_populated_dt())
- gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
-#ifdef CONFIG_OF
- else
- irqchip_init();
-#endif
-
- if (!of_have_populated_dt())
- combiner_init(S5P_VA_COMBINER_BASE, NULL,
- max_combiner_nr(), COMBINER_IRQ(0, 0));
-
- gic_arch_extn.irq_set_wake = s3c_irq_wake;
-}
-
-void __init exynos5_init_irq(void)
-{
-#ifdef CONFIG_OF
- irqchip_init();
-#endif
- gic_arch_extn.irq_set_wake = s3c_irq_wake;
+ of_clk_init(NULL);
+ clocksource_of_init();
}
struct bus_type exynos_subsys = {
@@ -552,59 +410,19 @@ static int __init exynos_core_init(void)
}
core_initcall(exynos_core_init);
-#ifdef CONFIG_CACHE_L2X0
static int __init exynos4_l2x0_cache_init(void)
{
int ret;
- if (soc_is_exynos5250() || soc_is_exynos5440())
- return 0;
-
ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
- if (!ret) {
- l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
- clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
- return 0;
- }
-
- if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
- l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
- /* TAG, Data Latency Control: 2 cycles */
- l2x0_saved_regs.tag_latency = 0x110;
-
- if (soc_is_exynos4212() || soc_is_exynos4412())
- l2x0_saved_regs.data_latency = 0x120;
- else
- l2x0_saved_regs.data_latency = 0x110;
-
- l2x0_saved_regs.prefetch_ctrl = 0x30000007;
- l2x0_saved_regs.pwr_ctrl =
- (L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN);
-
- l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+ if (ret)
+ return ret;
- __raw_writel(l2x0_saved_regs.tag_latency,
- S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
- __raw_writel(l2x0_saved_regs.data_latency,
- S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
-
- /* L2X0 Prefetch Control */
- __raw_writel(l2x0_saved_regs.prefetch_ctrl,
- S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
-
- /* L2X0 Power Control */
- __raw_writel(l2x0_saved_regs.pwr_ctrl,
- S5P_VA_L2CC + L2X0_POWER_CTRL);
-
- clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
- clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
- }
-
- l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
+ l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+ clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
return 0;
}
early_initcall(exynos4_l2x0_cache_init);
-#endif
static int __init exynos_init(void)
{
@@ -612,350 +430,3 @@ static int __init exynos_init(void)
return device_register(&exynos4_dev);
}
-
-/* uart registration process */
-
-static void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no)
-{
- struct s3c2410_uartcfg *tcfg = cfg;
- u32 ucnt;
-
- for (ucnt = 0; ucnt < no; ucnt++, tcfg++)
- tcfg->has_fracval = 1;
-
- s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
-}
-
-static void __iomem *exynos_eint_base;
-
-static DEFINE_SPINLOCK(eint_lock);
-
-static unsigned int eint0_15_data[16];
-
-static inline int exynos4_irq_to_gpio(unsigned int irq)
-{
- if (irq < IRQ_EINT(0))
- return -EINVAL;
-
- irq -= IRQ_EINT(0);
- if (irq < 8)
- return EXYNOS4_GPX0(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX1(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX2(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS4_GPX3(irq);
-
- return -EINVAL;
-}
-
-static inline int exynos5_irq_to_gpio(unsigned int irq)
-{
- if (irq < IRQ_EINT(0))
- return -EINVAL;
-
- irq -= IRQ_EINT(0);
- if (irq < 8)
- return EXYNOS5_GPX0(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX1(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX2(irq);
-
- irq -= 8;
- if (irq < 8)
- return EXYNOS5_GPX3(irq);
-
- return -EINVAL;
-}
-
-static unsigned int exynos4_eint0_15_src_int[16] = {
- EXYNOS4_IRQ_EINT0,
- EXYNOS4_IRQ_EINT1,
- EXYNOS4_IRQ_EINT2,
- EXYNOS4_IRQ_EINT3,
- EXYNOS4_IRQ_EINT4,
- EXYNOS4_IRQ_EINT5,
- EXYNOS4_IRQ_EINT6,
- EXYNOS4_IRQ_EINT7,
- EXYNOS4_IRQ_EINT8,
- EXYNOS4_IRQ_EINT9,
- EXYNOS4_IRQ_EINT10,
- EXYNOS4_IRQ_EINT11,
- EXYNOS4_IRQ_EINT12,
- EXYNOS4_IRQ_EINT13,
- EXYNOS4_IRQ_EINT14,
- EXYNOS4_IRQ_EINT15,
-};
-
-static unsigned int exynos5_eint0_15_src_int[16] = {
- EXYNOS5_IRQ_EINT0,
- EXYNOS5_IRQ_EINT1,
- EXYNOS5_IRQ_EINT2,
- EXYNOS5_IRQ_EINT3,
- EXYNOS5_IRQ_EINT4,
- EXYNOS5_IRQ_EINT5,
- EXYNOS5_IRQ_EINT6,
- EXYNOS5_IRQ_EINT7,
- EXYNOS5_IRQ_EINT8,
- EXYNOS5_IRQ_EINT9,
- EXYNOS5_IRQ_EINT10,
- EXYNOS5_IRQ_EINT11,
- EXYNOS5_IRQ_EINT12,
- EXYNOS5_IRQ_EINT13,
- EXYNOS5_IRQ_EINT14,
- EXYNOS5_IRQ_EINT15,
-};
-static inline void exynos_irq_eint_mask(struct irq_data *data)
-{
- u32 mask;
-
- spin_lock(&eint_lock);
- mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
- mask |= EINT_OFFSET_BIT(data->irq);
- __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-}
-
-static void exynos_irq_eint_unmask(struct irq_data *data)
-{
- u32 mask;
-
- spin_lock(&eint_lock);
- mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
- mask &= ~(EINT_OFFSET_BIT(data->irq));
- __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-}
-
-static inline void exynos_irq_eint_ack(struct irq_data *data)
-{
- __raw_writel(EINT_OFFSET_BIT(data->irq),
- EINT_PEND(exynos_eint_base, data->irq));
-}
-
-static void exynos_irq_eint_maskack(struct irq_data *data)
-{
- exynos_irq_eint_mask(data);
- exynos_irq_eint_ack(data);
-}
-
-static int exynos_irq_eint_set_type(struct irq_data *data, unsigned int type)
-{
- int offs = EINT_OFFSET(data->irq);
- int shift;
- u32 ctrl, mask;
- u32 newvalue = 0;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- newvalue = S5P_IRQ_TYPE_EDGE_RISING;
- break;
-
- case IRQ_TYPE_EDGE_FALLING:
- newvalue = S5P_IRQ_TYPE_EDGE_FALLING;
- break;
-
- case IRQ_TYPE_EDGE_BOTH:
- newvalue = S5P_IRQ_TYPE_EDGE_BOTH;
- break;
-
- case IRQ_TYPE_LEVEL_LOW:
- newvalue = S5P_IRQ_TYPE_LEVEL_LOW;
- break;
-
- case IRQ_TYPE_LEVEL_HIGH:
- newvalue = S5P_IRQ_TYPE_LEVEL_HIGH;
- break;
-
- default:
- printk(KERN_ERR "No such irq type %d", type);
- return -EINVAL;
- }
-
- shift = (offs & 0x7) * 4;
- mask = 0x7 << shift;
-
- spin_lock(&eint_lock);
- ctrl = __raw_readl(EINT_CON(exynos_eint_base, data->irq));
- ctrl &= ~mask;
- ctrl |= newvalue << shift;
- __raw_writel(ctrl, EINT_CON(exynos_eint_base, data->irq));
- spin_unlock(&eint_lock);
-
- if (soc_is_exynos5250())
- s3c_gpio_cfgpin(exynos5_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
- else
- s3c_gpio_cfgpin(exynos4_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
-
- return 0;
-}
-
-static struct irq_chip exynos_irq_eint = {
- .name = "exynos-eint",
- .irq_mask = exynos_irq_eint_mask,
- .irq_unmask = exynos_irq_eint_unmask,
- .irq_mask_ack = exynos_irq_eint_maskack,
- .irq_ack = exynos_irq_eint_ack,
- .irq_set_type = exynos_irq_eint_set_type,
-#ifdef CONFIG_PM
- .irq_set_wake = s3c_irqext_wake,
-#endif
-};
-
-/*
- * exynos4_irq_demux_eint
- *
- * This function demuxes the IRQ from from EINTs 16 to 31.
- * It is designed to be inlined into the specific handler
- * s5p_irq_demux_eintX_Y.
- *
- * Each EINT pend/mask registers handle eight of them.
- */
-static inline void exynos_irq_demux_eint(unsigned int start)
-{
- unsigned int irq;
-
- u32 status = __raw_readl(EINT_PEND(exynos_eint_base, start));
- u32 mask = __raw_readl(EINT_MASK(exynos_eint_base, start));
-
- status &= ~mask;
- status &= 0xff;
-
- while (status) {
- irq = fls(status) - 1;
- generic_handle_irq(irq + start);
- status &= ~(1 << irq);
- }
-}
-
-static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- chained_irq_enter(chip, desc);
- exynos_irq_demux_eint(IRQ_EINT(16));
- exynos_irq_demux_eint(IRQ_EINT(24));
- chained_irq_exit(chip, desc);
-}
-
-static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
-{
- u32 *irq_data = irq_get_handler_data(irq);
- struct irq_chip *chip = irq_get_chip(irq);
-
- chained_irq_enter(chip, desc);
- generic_handle_irq(*irq_data);
- chained_irq_exit(chip, desc);
-}
-
-static int __init exynos_init_irq_eint(void)
-{
- int irq;
-
-#ifdef CONFIG_PINCTRL_SAMSUNG
- /*
- * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf
- * functionality along with support for external gpio and wakeup
- * interrupts. If the samsung pinctrl driver is enabled and includes
- * the wakeup interrupt support, then the setting up external wakeup
- * interrupts here can be skipped. This check here is temporary to
- * allow exynos4 platforms that do not use Samsung pinctrl driver to
- * co-exist with platforms that do. When all of the Samsung Exynos4
- * platforms switch over to using the pinctrl driver, the wakeup
- * interrupt support code here can be completely removed.
- */
- static const struct of_device_id exynos_pinctrl_ids[] = {
- { .compatible = "samsung,exynos4210-pinctrl", },
- { .compatible = "samsung,exynos4x12-pinctrl", },
- { .compatible = "samsung,exynos5250-pinctrl", },
- };
- struct device_node *pctrl_np, *wkup_np;
- const char *wkup_compat = "samsung,exynos4210-wakeup-eint";
-
- for_each_matching_node(pctrl_np, exynos_pinctrl_ids) {
- if (of_device_is_available(pctrl_np)) {
- wkup_np = of_find_compatible_node(pctrl_np, NULL,
- wkup_compat);
- if (wkup_np)
- return -ENODEV;
- }
- }
-#endif
- if (soc_is_exynos5440())
- return 0;
-
- if (soc_is_exynos5250())
- exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
- else
- exynos_eint_base = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
-
- if (exynos_eint_base == NULL) {
- pr_err("unable to ioremap for EINT base address\n");
- return -ENOMEM;
- }
-
- for (irq = 0 ; irq <= 31 ; irq++) {
- irq_set_chip_and_handler(IRQ_EINT(irq), &exynos_irq_eint,
- handle_level_irq);
- set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
- }
-
- irq_set_chained_handler(EXYNOS_IRQ_EINT16_31, exynos_irq_demux_eint16_31);
-
- for (irq = 0 ; irq <= 15 ; irq++) {
- eint0_15_data[irq] = IRQ_EINT(irq);
-
- if (soc_is_exynos5250()) {
- irq_set_handler_data(exynos5_eint0_15_src_int[irq],
- &eint0_15_data[irq]);
- irq_set_chained_handler(exynos5_eint0_15_src_int[irq],
- exynos_irq_eint0_15);
- } else {
- irq_set_handler_data(exynos4_eint0_15_src_int[irq],
- &eint0_15_data[irq]);
- irq_set_chained_handler(exynos4_eint0_15_src_int[irq],
- exynos_irq_eint0_15);
- }
- }
-
- return 0;
-}
-arch_initcall(exynos_init_irq_eint);
-
-static struct resource exynos4_pmu_resource[] = {
- DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU),
- DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU1),
-#if defined(CONFIG_SOC_EXYNOS4412)
- DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU2),
- DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU3),
-#endif
-};
-
-static struct platform_device exynos4_device_pmu = {
- .name = "arm-pmu",
- .num_resources = ARRAY_SIZE(exynos4_pmu_resource),
- .resource = exynos4_pmu_resource,
-};
-
-static int __init exynos_armpmu_init(void)
-{
- if (!of_have_populated_dt()) {
- if (soc_is_exynos4210() || soc_is_exynos4212())
- exynos4_device_pmu.num_resources = 2;
- platform_device_register(&exynos4_device_pmu);
- }
-
- return 0;
-}
-arch_initcall(exynos_armpmu_init);
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