diff options
Diffstat (limited to 'arch/mips/mti-sead3')
| -rw-r--r-- | arch/mips/mti-sead3/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/leds-sead3.c | 1 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-ehci.c | 8 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-i2c-drv.c | 1 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-i2c.c | 8 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-int.c | 131 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-leds.c | 8 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-net.c | 14 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-pic32-bus.c | 102 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-pic32-i2c-drv.c | 423 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-platform.c | 18 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-serial.c | 45 | ||||
| -rw-r--r-- | arch/mips/mti-sead3/sead3-time.c | 35 |
13 files changed, 52 insertions, 743 deletions
diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile index febf4334545e..2ae49e99eb67 100644 --- a/arch/mips/mti-sead3/Makefile +++ b/arch/mips/mti-sead3/Makefile @@ -14,7 +14,6 @@ obj-y := sead3-lcd.o sead3-display.o sead3-init.o \ sead3-setup.o sead3-time.o obj-y += sead3-i2c-dev.o sead3-i2c.o \ - sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ leds-sead3.o sead3-leds.o obj-$(CONFIG_EARLY_PRINTK) += sead3-console.o diff --git a/arch/mips/mti-sead3/leds-sead3.c b/arch/mips/mti-sead3/leds-sead3.c index 0a168c948b01..3abe47b316aa 100644 --- a/arch/mips/mti-sead3/leds-sead3.c +++ b/arch/mips/mti-sead3/leds-sead3.c @@ -70,7 +70,6 @@ static struct platform_driver sead3_led_driver = { .remove = sead3_led_remove, .driver = { .name = DRVNAME, - .owner = THIS_MODULE, }, }; diff --git a/arch/mips/mti-sead3/sead3-ehci.c b/arch/mips/mti-sead3/sead3-ehci.c index 772fc056a92d..014dd7ba4d68 100644 --- a/arch/mips/mti-sead3/sead3-ehci.c +++ b/arch/mips/mti-sead3/sead3-ehci.c @@ -9,6 +9,9 @@ #include <linux/irq.h> #include <linux/dma-mapping.h> #include <linux/platform_device.h> +#include <linux/irqchip/mips-gic.h> + +#include <asm/mips-boards/sead3int.h> struct resource ehci_resources[] = { { @@ -17,7 +20,6 @@ struct resource ehci_resources[] = { .flags = IORESOURCE_MEM }, { - .start = MIPS_CPU_IRQ_BASE + 2, .flags = IORESOURCE_IRQ } }; @@ -37,6 +39,10 @@ static struct platform_device ehci_device = { static int __init ehci_init(void) { + if (gic_present) + ehci_resources[1].start = MIPS_GIC_IRQ_BASE + GIC_INT_EHCI; + else + ehci_resources[1].start = MIPS_CPU_IRQ_BASE + CPU_INT_EHCI; return platform_device_register(&ehci_device); } diff --git a/arch/mips/mti-sead3/sead3-i2c-drv.c b/arch/mips/mti-sead3/sead3-i2c-drv.c index 1f787a6a7878..2bebf0974e39 100644 --- a/arch/mips/mti-sead3/sead3-i2c-drv.c +++ b/arch/mips/mti-sead3/sead3-i2c-drv.c @@ -380,7 +380,6 @@ static int sead3_i2c_platform_resume(struct platform_device *pdev) static struct platform_driver sead3_i2c_platform_driver = { .driver = { .name = "sead3-i2c", - .owner = THIS_MODULE, }, .probe = sead3_i2c_platform_probe, .remove = sead3_i2c_platform_remove, diff --git a/arch/mips/mti-sead3/sead3-i2c.c b/arch/mips/mti-sead3/sead3-i2c.c index f70d5fc58ef5..795ae83894e0 100644 --- a/arch/mips/mti-sead3/sead3-i2c.c +++ b/arch/mips/mti-sead3/sead3-i2c.c @@ -5,10 +5,8 @@ * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ -#include <linux/module.h> #include <linux/init.h> #include <linux/platform_device.h> -#include <irq.h> struct resource sead3_i2c_resources[] = { { @@ -30,8 +28,4 @@ static int __init sead3_i2c_init(void) return platform_device_register(&sead3_i2c_device); } -module_init(sead3_i2c_init); - -MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("I2C probe driver for SEAD3"); +device_initcall(sead3_i2c_init); diff --git a/arch/mips/mti-sead3/sead3-int.c b/arch/mips/mti-sead3/sead3-int.c index 6a560ac03def..e31e17f81eef 100644 --- a/arch/mips/mti-sead3/sead3-int.c +++ b/arch/mips/mti-sead3/sead3-int.c @@ -7,9 +7,9 @@ */ #include <linux/init.h> #include <linux/irq.h> +#include <linux/irqchip/mips-gic.h> #include <linux/io.h> -#include <asm/gic.h> #include <asm/irq_cpu.h> #include <asm/setup.h> @@ -20,138 +20,23 @@ #define SEAD_CONFIG_BASE 0x1b100110 #define SEAD_CONFIG_SIZE 4 -static unsigned long sead3_config_reg; - -/* - * This table defines the setup for each external GIC interrupt. It is - * indexed by interrupt number. - */ -#define GIC_CPU_NMI GIC_MAP_TO_NMI_MSK -static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { - { 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, - { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED }, -}; - -asmlinkage void plat_irq_dispatch(void) -{ - unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; - int irq; - - irq = (fls(pending) - CAUSEB_IP - 1); - if (irq >= 0) - do_IRQ(MIPS_CPU_IRQ_BASE + irq); - else - spurious_interrupt(); -} +static void __iomem *sead3_config_reg; void __init arch_init_irq(void) { - int i; - - if (!cpu_has_veic) { + if (!cpu_has_veic) mips_cpu_irq_init(); - if (cpu_has_vint) { - /* install generic handler */ - for (i = 0; i < 8; i++) - set_vi_handler(i, plat_irq_dispatch); - } - } - - sead3_config_reg = (unsigned long)ioremap_nocache(SEAD_CONFIG_BASE, - SEAD_CONFIG_SIZE); - gic_present = (REG32(sead3_config_reg) & SEAD_CONFIG_GIC_PRESENT_MSK) >> + sead3_config_reg = ioremap_nocache(SEAD_CONFIG_BASE, SEAD_CONFIG_SIZE); + gic_present = (__raw_readl(sead3_config_reg) & + SEAD_CONFIG_GIC_PRESENT_MSK) >> SEAD_CONFIG_GIC_PRESENT_SHF; pr_info("GIC: %spresent\n", (gic_present) ? "" : "not "); pr_info("EIC: %s\n", (current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off"); if (gic_present) - gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map, - ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE); -} - -void gic_enable_interrupt(int irq_vec) -{ - unsigned int i, irq_source; - - /* enable all the interrupts associated with this vector */ - for (i = 0; i < gic_shared_intr_map[irq_vec].num_shared_intr; i++) { - irq_source = gic_shared_intr_map[irq_vec].intr_list[i]; - GIC_SET_INTR_MASK(irq_source); - } - /* enable all local interrupts associated with this vector */ - if (gic_shared_intr_map[irq_vec].local_intr_mask) { - GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), 0); - GICWRITE(GIC_REG(VPE_OTHER, GIC_VPE_SMASK), - gic_shared_intr_map[irq_vec].local_intr_mask); - } + gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, CPU_INT_GIC, + MIPS_GIC_IRQ_BASE); } -void gic_disable_interrupt(int irq_vec) -{ - unsigned int i, irq_source; - - /* disable all the interrupts associated with this vector */ - for (i = 0; i < gic_shared_intr_map[irq_vec].num_shared_intr; i++) { - irq_source = gic_shared_intr_map[irq_vec].intr_list[i]; - GIC_CLR_INTR_MASK(irq_source); - } - /* disable all local interrupts associated with this vector */ - if (gic_shared_intr_map[irq_vec].local_intr_mask) { - GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), 0); - GICWRITE(GIC_REG(VPE_OTHER, GIC_VPE_RMASK), - gic_shared_intr_map[irq_vec].local_intr_mask); - } -} - -void gic_irq_ack(struct irq_data *d) -{ - GIC_CLR_INTR_MASK(d->irq - gic_irq_base); -} - -void gic_finish_irq(struct irq_data *d) -{ - unsigned int irq = (d->irq - gic_irq_base); - unsigned int i, irq_source; - - /* Clear edge detectors. */ - for (i = 0; i < gic_shared_intr_map[irq].num_shared_intr; i++) { - irq_source = gic_shared_intr_map[irq].intr_list[i]; - if (gic_irq_flags[irq_source] & GIC_TRIG_EDGE) - GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), irq_source); - } - - /* Enable interrupts. */ - GIC_SET_INTR_MASK(irq); -} - -void __init gic_platform_init(int irqs, struct irq_chip *irq_controller) -{ - int i; - - /* - * For non-EIC mode, we want to setup the GIC in pass-through - * mode, as if the GIC didn't exist. Do not map any interrupts - * for an external interrupt controller. - */ - if (!cpu_has_veic) - return; - - for (i = gic_irq_base; i < (gic_irq_base + irqs); i++) - irq_set_chip_and_handler(i, irq_controller, handle_percpu_irq); -} diff --git a/arch/mips/mti-sead3/sead3-leds.c b/arch/mips/mti-sead3/sead3-leds.c index 20102a6d4141..c427c5778186 100644 --- a/arch/mips/mti-sead3/sead3-leds.c +++ b/arch/mips/mti-sead3/sead3-leds.c @@ -5,7 +5,7 @@ * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ -#include <linux/module.h> +#include <linux/init.h> #include <linux/leds.h> #include <linux/platform_device.h> @@ -76,8 +76,4 @@ static int __init led_init(void) return platform_device_register(&fled_device); } -module_init(led_init); - -MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("LED probe driver for SEAD-3"); +device_initcall(led_init); diff --git a/arch/mips/mti-sead3/sead3-net.c b/arch/mips/mti-sead3/sead3-net.c index dd11e7eb771c..46176b804576 100644 --- a/arch/mips/mti-sead3/sead3-net.c +++ b/arch/mips/mti-sead3/sead3-net.c @@ -7,9 +7,12 @@ */ #include <linux/module.h> #include <linux/irq.h> +#include <linux/irqchip/mips-gic.h> #include <linux/platform_device.h> #include <linux/smsc911x.h> +#include <asm/mips-boards/sead3int.h> + static struct smsc911x_platform_config sead3_smsc911x_data = { .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, @@ -17,14 +20,13 @@ static struct smsc911x_platform_config sead3_smsc911x_data = { .phy_interface = PHY_INTERFACE_MODE_MII, }; -struct resource sead3_net_resourcess[] = { +struct resource sead3_net_resources[] = { { .start = 0x1f010000, .end = 0x1f01ffff, .flags = IORESOURCE_MEM }, { - .start = MIPS_CPU_IRQ_BASE + 6, .flags = IORESOURCE_IRQ } }; @@ -35,12 +37,16 @@ static struct platform_device sead3_net_device = { .dev = { .platform_data = &sead3_smsc911x_data, }, - .num_resources = ARRAY_SIZE(sead3_net_resourcess), - .resource = sead3_net_resourcess + .num_resources = ARRAY_SIZE(sead3_net_resources), + .resource = sead3_net_resources }; static int __init sead3_net_init(void) { + if (gic_present) + sead3_net_resources[1].start = MIPS_GIC_IRQ_BASE + GIC_INT_NET; + else + sead3_net_resources[1].start = MIPS_CPU_IRQ_BASE + CPU_INT_NET; return platform_device_register(&sead3_net_device); } diff --git a/arch/mips/mti-sead3/sead3-pic32-bus.c b/arch/mips/mti-sead3/sead3-pic32-bus.c deleted file mode 100644 index 3b12aa5a7c88..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-bus.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/errno.h> - -#define PIC32_NULL 0x00 -#define PIC32_RD 0x01 -#define PIC32_SYSRD 0x02 -#define PIC32_WR 0x10 -#define PIC32_SYSWR 0x20 -#define PIC32_IRQ_CLR 0x40 -#define PIC32_STATUS 0x80 - -#define DELAY() udelay(100) /* FIXME: needed? */ - -/* spinlock to ensure atomic access to PIC32 */ -static DEFINE_SPINLOCK(pic32_bus_lock); - -/* FIXME: io_remap these */ -static void __iomem *bus_xfer = (void __iomem *)0xbf000600; -static void __iomem *bus_status = (void __iomem *)0xbf000060; - -static inline unsigned int ioready(void) -{ - return readl(bus_status) & 1; -} - -static inline void wait_ioready(void) -{ - do { } while (!ioready()); -} - -static inline void wait_ioclear(void) -{ - do { } while (ioready()); -} - -static inline void check_ioclear(void) -{ - if (ioready()) { - pr_debug("ioclear: initially busy\n"); - do { - (void) readl(bus_xfer); - DELAY(); - } while (ioready()); - pr_debug("ioclear: cleared busy\n"); - } -} - -u32 pic32_bus_readl(u32 reg) -{ - unsigned long flags; - u32 status, val; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_RD << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - DELAY(); - val = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_readl: *%x -> %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); - - return val; -} - -void pic32_bus_writel(u32 val, u32 reg) -{ - unsigned long flags; - u32 status; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_WR << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - writel(val, bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_writel: *%x <- %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); -} diff --git a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c deleted file mode 100644 index 80fe194cfa53..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/platform_device.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/i2c.h> -#include <linux/slab.h> - -#define PIC32_I2CxCON 0x0000 -#define PIC32_I2CxCONCLR 0x0004 -#define PIC32_I2CxCONSET 0x0008 -#define PIC32_I2CxCONINV 0x000C -#define I2CCON_ON (1<<15) -#define I2CCON_FRZ (1<<14) -#define I2CCON_SIDL (1<<13) -#define I2CCON_SCLREL (1<<12) -#define I2CCON_STRICT (1<<11) -#define I2CCON_A10M (1<<10) -#define I2CCON_DISSLW (1<<9) -#define I2CCON_SMEN (1<<8) -#define I2CCON_GCEN (1<<7) -#define I2CCON_STREN (1<<6) -#define I2CCON_ACKDT (1<<5) -#define I2CCON_ACKEN (1<<4) -#define I2CCON_RCEN (1<<3) -#define I2CCON_PEN (1<<2) -#define I2CCON_RSEN (1<<1) -#define I2CCON_SEN (1<<0) - -#define PIC32_I2CxSTAT 0x0010 -#define PIC32_I2CxSTATCLR 0x0014 -#define PIC32_I2CxSTATSET 0x0018 -#define PIC32_I2CxSTATINV 0x001C -#define I2CSTAT_ACKSTAT (1<<15) -#define I2CSTAT_TRSTAT (1<<14) -#define I2CSTAT_BCL (1<<10) -#define I2CSTAT_GCSTAT (1<<9) -#define I2CSTAT_ADD10 (1<<8) -#define I2CSTAT_IWCOL (1<<7) -#define I2CSTAT_I2COV (1<<6) -#define I2CSTAT_DA (1<<5) -#define I2CSTAT_P (1<<4) -#define I2CSTAT_S (1<<3) -#define I2CSTAT_RW (1<<2) -#define I2CSTAT_RBF (1<<1) -#define I2CSTAT_TBF (1<<0) - -#define PIC32_I2CxADD 0x0020 -#define PIC32_I2CxADDCLR 0x0024 -#define PIC32_I2CxADDSET 0x0028 -#define PIC32_I2CxADDINV 0x002C -#define PIC32_I2CxMSK 0x0030 -#define PIC32_I2CxMSKCLR 0x0034 -#define PIC32_I2CxMSKSET 0x0038 -#define PIC32_I2CxMSKINV 0x003C -#define PIC32_I2CxBRG 0x0040 -#define PIC32_I2CxBRGCLR 0x0044 -#define PIC32_I2CxBRGSET 0x0048 -#define PIC32_I2CxBRGINV 0x004C -#define PIC32_I2CxTRN 0x0050 -#define PIC32_I2CxTRNCLR 0x0054 -#define PIC32_I2CxTRNSET 0x0058 -#define PIC32_I2CxTRNINV 0x005C -#define PIC32_I2CxRCV 0x0060 - -struct i2c_platform_data { - u32 base; - struct i2c_adapter adap; - u32 xfer_timeout; - u32 ack_timeout; - u32 ctl_timeout; -}; - -extern u32 pic32_bus_readl(u32 reg); -extern void pic32_bus_writel(u32 val, u32 reg); - -static inline void -StartI2C(struct i2c_platform_data *adap) -{ - pr_debug("StartI2C\n"); - pic32_bus_writel(I2CCON_SEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -StopI2C(struct i2c_platform_data *adap) -{ - pr_debug("StopI2C\n"); - pic32_bus_writel(I2CCON_PEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -AckI2C(struct i2c_platform_data *adap) -{ - pr_debug("AckI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -NotAckI2C(struct i2c_platform_data *adap) -{ - pr_debug("NakI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline int -IdleI2C(struct i2c_platform_data *adap) -{ - int i; - - pr_debug("IdleI2C\n"); - for (i = 0; i < adap->ctl_timeout; i++) { - if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & - (I2CCON_ACKEN | I2CCON_RCEN | I2CCON_PEN | I2CCON_RSEN | - I2CCON_SEN)) == 0) && - ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - (I2CSTAT_TRSTAT)) == 0)) - return 0; - udelay(1); - } - return -ETIMEDOUT; -} - -static inline u32 -MasterWriteI2C(struct i2c_platform_data *adap, u32 byte) -{ - pr_debug("MasterWriteI2C\n"); - - pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); - - return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_IWCOL; -} - -static inline u32 -MasterReadI2C(struct i2c_platform_data *adap) -{ - pr_debug("MasterReadI2C\n"); - - pic32_bus_writel(I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); - - while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & I2CCON_RCEN) - ; - - pic32_bus_writel(I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); - - return pic32_bus_readl(adap->base + PIC32_I2CxRCV); -} - -static int -do_address(struct i2c_platform_data *adap, unsigned int addr, int rd) -{ - pr_debug("doaddress\n"); - - IdleI2C(adap); - StartI2C(adap); - IdleI2C(adap); - - addr <<= 1; - if (rd) - addr |= 1; - - if (MasterWriteI2C(adap, addr)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) - return -EIO; - return 0; -} - -static int -i2c_read(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_read\n"); - - i = 0; - while (i < len) { - data = MasterReadI2C(adap); - buf[i++] = data; - if (i < len) - AckI2C(adap); - else - NotAckI2C(adap); - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -i2c_write(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_write\n"); - - i = 0; - while (i < len) { - data = buf[i]; - if (MasterWriteI2C(adap, data)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - I2CSTAT_ACKSTAT) - return -EIO; - i++; - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -platform_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) -{ - struct i2c_platform_data *adap = i2c_adap->algo_data; - struct i2c_msg *p; - int i, err = 0; - - pr_debug("platform_xfer\n"); - for (i = 0; i < num; i++) { -#define __BUFSIZE 80 - int ii; - static char buf[__BUFSIZE]; - char *b = buf; - - p = &msgs[i]; - b += sprintf(buf, " [%d bytes]", p->len); - if ((p->flags & I2C_M_RD) == 0) { - for (ii = 0; ii < p->len; ii++) { - if (b < &buf[__BUFSIZE-4]) { - b += sprintf(b, " %02x", p->buf[ii]); - } else { - strcat(b, "..."); - break; - } - } - } - pr_debug("xfer%d: DevAddr: %04x Op:%s Data:%s\n", i, p->addr, - (p->flags & I2C_M_RD) ? "Rd" : "Wr", buf); - } - - - for (i = 0; !err && i < num; i++) { - p = &msgs[i]; - err = do_address(adap, p->addr, p->flags & I2C_M_RD); - if (err || !p->len) - continue; - if (p->flags & I2C_M_RD) - err = i2c_read(adap, p->buf, p->len); - else - err = i2c_write(adap, p->buf, p->len); - } - - /* Return the number of messages processed, or the error code. */ - if (err == 0) - err = num; - - return err; -} - -static u32 -platform_func(struct i2c_adapter *adap) -{ - pr_debug("platform_algo\n"); - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -static const struct i2c_algorithm platform_algo = { - .master_xfer = platform_xfer, - .functionality = platform_func, -}; - -static void i2c_platform_setup(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_setup\n"); - - pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONSET); - pic32_bus_writel((I2CSTAT_BCL | I2CSTAT_IWCOL), - (priv->base + PIC32_I2CxSTATCLR)); -} - -static void i2c_platform_disable(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_disable\n"); -} - -static int i2c_platform_probe(struct platform_device *pdev) -{ - struct i2c_platform_data *priv; - struct resource *r; - int ret; - - pr_debug("i2c_platform_probe\n"); - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENODEV; - - priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_platform_data), - GFP_KERNEL); - if (!priv) - return -ENOMEM; - - /* FIXME: need to allocate resource in PIC32 space */ -#if 0 - priv->base = bus_request_region(r->start, resource_size(r), - pdev->name); -#else - priv->base = r->start; -#endif - if (!priv->base) - return -EBUSY; - - priv->xfer_timeout = 200; - priv->ack_timeout = 200; - priv->ctl_timeout = 200; - - priv->adap.nr = pdev->id; - priv->adap.algo = &platform_algo; - priv->adap.algo_data = priv; - priv->adap.dev.parent = &pdev->dev; - strlcpy(priv->adap.name, "PIC32 I2C", sizeof(priv->adap.name)); - - i2c_platform_setup(priv); - - ret = i2c_add_numbered_adapter(&priv->adap); - if (ret) { - i2c_platform_disable(priv); - return ret; - } - - platform_set_drvdata(pdev, priv); - return 0; -} - -static int i2c_platform_remove(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - pr_debug("i2c_platform_remove\n"); - platform_set_drvdata(pdev, NULL); - i2c_del_adapter(&priv->adap); - i2c_platform_disable(priv); - return 0; -} - -#ifdef CONFIG_PM -static int -i2c_platform_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_disable\n"); - i2c_platform_disable(priv); - - return 0; -} - -static int -i2c_platform_resume(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_setup\n"); - i2c_platform_setup(priv); - - return 0; -} -#else -#define i2c_platform_suspend NULL -#define i2c_platform_resume NULL -#endif - -static struct platform_driver i2c_platform_driver = { - .driver = { - .name = "i2c_pic32", - .owner = THIS_MODULE, - }, - .probe = i2c_platform_probe, - .remove = i2c_platform_remove, - .suspend = i2c_platform_suspend, - .resume = i2c_platform_resume, -}; - -static int __init -i2c_platform_init(void) -{ - pr_debug("i2c_platform_init\n"); - return platform_driver_register(&i2c_platform_driver); -} - -static void __exit -i2c_platform_exit(void) -{ - pr_debug("i2c_platform_exit\n"); - platform_driver_unregister(&i2c_platform_driver); -} - -MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); -MODULE_DESCRIPTION("PIC32 I2C driver"); -MODULE_LICENSE("GPL"); - -module_init(i2c_platform_init); -module_exit(i2c_platform_exit); diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c index 6c3b33dbed18..53ee6f1f018d 100644 --- a/arch/mips/mti-sead3/sead3-platform.c +++ b/arch/mips/mti-sead3/sead3-platform.c @@ -7,12 +7,15 @@ */ #include <linux/module.h> #include <linux/init.h> +#include <linux/irqchip/mips-gic.h> #include <linux/serial_8250.h> -#define UART(base, int) \ +#include <asm/mips-boards/sead3int.h> + +#define UART(base) \ { \ .mapbase = base, \ - .irq = int, \ + .irq = -1, \ .uartclk = 14745600, \ .iotype = UPIO_MEM32, \ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \ @@ -20,8 +23,8 @@ } static struct plat_serial8250_port uart8250_data[] = { - UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */ - UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */ + UART(0x1f000900), /* ttyS0 = USB */ + UART(0x1f000800), /* ttyS1 = RS232 */ { }, }; @@ -35,6 +38,13 @@ static struct platform_device uart8250_device = { static int __init uart8250_init(void) { + if (gic_present) { + uart8250_data[0].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART0; + uart8250_data[1].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART1; + } else { + uart8250_data[0].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART0; + uart8250_data[1].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART1; + } return platform_device_register(&uart8250_device); } diff --git a/arch/mips/mti-sead3/sead3-serial.c b/arch/mips/mti-sead3/sead3-serial.c deleted file mode 100644 index bc52705bbee4..000000000000 --- a/arch/mips/mti-sead3/sead3-serial.c +++ /dev/null @@ -1,45 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/serial_8250.h> - -#define UART(base, int) \ -{ \ - .mapbase = base, \ - .irq = int, \ - .uartclk = 14745600, \ - .iotype = UPIO_MEM32, \ - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \ - .regshift = 2, \ -} - -static struct plat_serial8250_port uart8250_data[] = { - UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */ - UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */ - { }, -}; - -static struct platform_device uart8250_device = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM, - .dev = { - .platform_data = uart8250_data, - }, -}; - -static int __init uart8250_init(void) -{ - return platform_device_register(&uart8250_device); -} - -module_init(uart8250_init); - -MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("8250 UART probe driver for the SEAD-3 platform"); diff --git a/arch/mips/mti-sead3/sead3-time.c b/arch/mips/mti-sead3/sead3-time.c index 678d03d53c60..ec1dd2491f96 100644 --- a/arch/mips/mti-sead3/sead3-time.c +++ b/arch/mips/mti-sead3/sead3-time.c @@ -6,6 +6,7 @@ * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ #include <linux/init.h> +#include <linux/irqchip/mips-gic.h> #include <asm/cpu.h> #include <asm/setup.h> @@ -13,19 +14,6 @@ #include <asm/irq.h> #include <asm/mips-boards/generic.h> -static int mips_cpu_timer_irq; -static int mips_cpu_perf_irq; - -static void mips_timer_dispatch(void) -{ - do_IRQ(mips_cpu_timer_irq); -} - -static void mips_perf_dispatch(void) -{ - do_IRQ(mips_cpu_perf_irq); -} - static void __iomem *status_reg = (void __iomem *)0xbf000410; /* @@ -81,21 +69,20 @@ void read_persistent_clock(struct timespec *ts) ts->tv_nsec = 0; } -static void __init plat_perf_setup(void) +int get_c0_perfcount_int(void) { - if (cp0_perfcount_irq >= 0) { - if (cpu_has_vint) - set_vi_handler(cp0_perfcount_irq, mips_perf_dispatch); - mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; - } + if (gic_present) + return gic_get_c0_compare_int(); + if (cp0_perfcount_irq >= 0) + return MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; + return -1; } unsigned int get_c0_compare_int(void) { - if (cpu_has_vint) - set_vi_handler(cp0_compare_irq, mips_timer_dispatch); - mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq; - return mips_cpu_timer_irq; + if (gic_present) + return gic_get_c0_compare_int(); + return MIPS_CPU_IRQ_BASE + cp0_compare_irq; } void __init plat_time_init(void) @@ -108,6 +95,4 @@ void __init plat_time_init(void) (est_freq % 1000000) * 100 / 1000000); mips_scroll_message(); - - plat_perf_setup(); } |