diff options
26 files changed, 235 insertions, 157 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index bc439de48cd..b44e37753b9 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -21,6 +21,7 @@ config SUPERH select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_GENERIC_HARDIRQS select HAVE_SPARSE_IRQ + select IRQ_FORCED_THREADING select RTC_LIB select GENERIC_ATOMIC64 select GENERIC_IRQ_SHOW diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c index 86a0d565ade..bb13d0e1b96 100644 --- a/arch/sh/boards/mach-ecovec24/setup.c +++ b/arch/sh/boards/mach-ecovec24/setup.c @@ -482,7 +482,7 @@ static struct i2c_board_info ts_i2c_clients = { .irq = IRQ0, }; -#if defined(CONFIG_MMC_TMIO) || defined(CONFIG_MMC_TMIO_MODULE) +#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) /* SDHI0 */ static void sdhi0_set_pwr(struct platform_device *pdev, int state) { @@ -522,7 +522,7 @@ static struct platform_device sdhi0_device = { }, }; -#if !defined(CONFIG_MMC_SH_MMCIF) +#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE) /* SDHI1 */ static void sdhi1_set_pwr(struct platform_device *pdev, int state) { @@ -836,7 +836,7 @@ static struct platform_device vou_device = { }, }; -#if defined(CONFIG_MMC_SH_MMCIF) +#if defined(CONFIG_MMC_SH_MMCIF) || defined(CONFIG_MMC_SH_MMCIF_MODULE) /* SH_MMCIF */ static void mmcif_set_pwr(struct platform_device *pdev, int state) { @@ -898,9 +898,9 @@ static struct platform_device *ecovec_devices[] __initdata = { &ceu0_device, &ceu1_device, &keysc_device, -#if defined(CONFIG_MMC_TMIO) || defined(CONFIG_MMC_TMIO_MODULE) +#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) &sdhi0_device, -#if !defined(CONFIG_MMC_SH_MMCIF) +#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE) &sdhi1_device, #endif #else @@ -912,7 +912,7 @@ static struct platform_device *ecovec_devices[] __initdata = { &fsi_device, &irda_device, &vou_device, -#if defined(CONFIG_MMC_SH_MMCIF) +#if defined(CONFIG_MMC_SH_MMCIF) || defined(CONFIG_MMC_SH_MMCIF_MODULE) &sh_mmcif_device, #endif }; @@ -1180,7 +1180,7 @@ static int __init arch_setup(void) gpio_direction_input(GPIO_PTR5); gpio_direction_input(GPIO_PTR6); -#if defined(CONFIG_MMC_TMIO) || defined(CONFIG_MMC_TMIO_MODULE) +#if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) /* enable SDHI0 on CN11 (needs DS2.4 set to ON) */ gpio_request(GPIO_FN_SDHI0CD, NULL); gpio_request(GPIO_FN_SDHI0WP, NULL); @@ -1193,7 +1193,7 @@ static int __init arch_setup(void) gpio_request(GPIO_PTB6, NULL); gpio_direction_output(GPIO_PTB6, 0); -#if !defined(CONFIG_MMC_SH_MMCIF) +#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE) /* enable SDHI1 on CN12 (needs DS2.6,7 set to ON,OFF) */ gpio_request(GPIO_FN_SDHI1CD, NULL); gpio_request(GPIO_FN_SDHI1WP, NULL); @@ -1284,7 +1284,7 @@ static int __init arch_setup(void) gpio_request(GPIO_PTU5, NULL); gpio_direction_output(GPIO_PTU5, 0); -#if defined(CONFIG_MMC_SH_MMCIF) +#if defined(CONFIG_MMC_SH_MMCIF) || defined(CONFIG_MMC_SH_MMCIF_MODULE) /* enable MMCIF (needs DS2.6,7 set to OFF,ON) */ gpio_request(GPIO_FN_MMC_D7, NULL); gpio_request(GPIO_FN_MMC_D6, NULL); diff --git a/arch/sh/configs/ecovec24_defconfig b/arch/sh/configs/ecovec24_defconfig index 8d13e8a5a75..911e30c9abf 100644 --- a/arch/sh/configs/ecovec24_defconfig +++ b/arch/sh/configs/ecovec24_defconfig @@ -115,7 +115,7 @@ CONFIG_USB_GADGET=y CONFIG_USB_FILE_STORAGE=m CONFIG_MMC=y CONFIG_MMC_SPI=y -CONFIG_MMC_TMIO=y +CONFIG_MMC_SDHI=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_RS5C372=y CONFIG_UIO=y diff --git a/arch/sh/configs/sh7757lcr_defconfig b/arch/sh/configs/sh7757lcr_defconfig index fa0ecf87034..33ddb130a7c 100644 --- a/arch/sh/configs/sh7757lcr_defconfig +++ b/arch/sh/configs/sh7757lcr_defconfig @@ -70,7 +70,7 @@ CONFIG_USB_EHCI_HCD=y CONFIG_USB_OHCI_HCD=y CONFIG_USB_STORAGE=y CONFIG_MMC=y -CONFIG_MMC_TMIO=y +CONFIG_MMC_SDHI=y CONFIG_MMC_SH_MMCIF=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y diff --git a/arch/sh/drivers/pci/fixups-se7751.c b/arch/sh/drivers/pci/fixups-se7751.c index a4c7d3a4efc..fd3e6b02f28 100644 --- a/arch/sh/drivers/pci/fixups-se7751.c +++ b/arch/sh/drivers/pci/fixups-se7751.c @@ -6,7 +6,7 @@ #include <linux/io.h> #include "pci-sh4.h" -int __init pcibios_map_platform_irq(u8 slot, u8 pin) +int __init pcibios_map_platform_irq(struct pci_dev *, u8 slot, u8 pin) { switch (slot) { case 0: return 13; diff --git a/arch/sh/include/asm/stacktrace.h b/arch/sh/include/asm/stacktrace.h index 79701821371..a7e2d4dfd08 100644 --- a/arch/sh/include/asm/stacktrace.h +++ b/arch/sh/include/asm/stacktrace.h @@ -10,9 +10,6 @@ /* Generic stack tracer with callbacks */ struct stacktrace_ops { - void (*warning)(void *data, char *msg); - /* msg must contain %s for the symbol */ - void (*warning_symbol)(void *data, char *msg, unsigned long symbol); void (*address)(void *data, unsigned long address, int reliable); /* On negative return stop dumping */ int (*stack)(void *data, char *name); diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h index ca7765e5f96..bb7d2702c2c 100644 --- a/arch/sh/include/asm/unistd_32.h +++ b/arch/sh/include/asm/unistd_32.h @@ -373,8 +373,9 @@ #define __NR_open_by_handle_at 360 #define __NR_clock_adjtime 361 #define __NR_syncfs 362 +#define __NR_sendmmsg 363 -#define NR_syscalls 363 +#define NR_syscalls 364 #ifdef __KERNEL__ diff --git a/arch/sh/include/asm/unistd_64.h b/arch/sh/include/asm/unistd_64.h index a694009bb81..46327cea1e5 100644 --- a/arch/sh/include/asm/unistd_64.h +++ b/arch/sh/include/asm/unistd_64.h @@ -394,10 +394,11 @@ #define __NR_open_by_handle_at 371 #define __NR_clock_adjtime 372 #define __NR_syncfs 373 +#define __NR_sendmmsg 374 #ifdef __KERNEL__ -#define NR_syscalls 374 +#define NR_syscalls 375 #define __ARCH_WANT_IPC_PARSE_VERSION #define __ARCH_WANT_OLD_READDIR diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile index d49c2135fd4..ae95935d93c 100644 --- a/arch/sh/kernel/cpu/Makefile +++ b/arch/sh/kernel/cpu/Makefile @@ -17,7 +17,5 @@ obj-$(CONFIG_ARCH_SHMOBILE) += shmobile/ obj-$(CONFIG_SH_ADC) += adc.o obj-$(CONFIG_SH_CLK_CPG_LEGACY) += clock-cpg.o -obj-$(CONFIG_SH_FPU) += fpu.o -obj-$(CONFIG_SH_FPU_EMU) += fpu.o -obj-y += irq/ init.o clock.o hwblk.o proc.o +obj-y += irq/ init.o clock.o fpu.o hwblk.o proc.o diff --git a/arch/sh/kernel/cpu/shmobile/pm_runtime.c b/arch/sh/kernel/cpu/shmobile/pm_runtime.c index 22db127afa7..64c807c3920 100644 --- a/arch/sh/kernel/cpu/shmobile/pm_runtime.c +++ b/arch/sh/kernel/cpu/shmobile/pm_runtime.c @@ -157,7 +157,7 @@ static int default_platform_runtime_suspend(struct device *dev) might_sleep(); /* catch misconfigured drivers not starting with resume */ - if (test_bit(PDEV_ARCHDATA_FLAG_INIT, &pdev->archdata.flags)) { + if (test_bit(PDEV_ARCHDATA_FLAG_INIT, &ad->flags)) { ret = -EINVAL; goto out; } @@ -170,8 +170,8 @@ static int default_platform_runtime_suspend(struct device *dev) /* put device on idle list */ spin_lock_irqsave(&hwblk_lock, flags); - list_add_tail(&pdev->archdata.entry, &hwblk_idle_list); - __set_bit(PDEV_ARCHDATA_FLAG_IDLE, &pdev->archdata.flags); + list_add_tail(&ad->entry, &hwblk_idle_list); + __set_bit(PDEV_ARCHDATA_FLAG_IDLE, &ad->flags); spin_unlock_irqrestore(&hwblk_lock, flags); /* increase idle count */ diff --git a/arch/sh/kernel/dumpstack.c b/arch/sh/kernel/dumpstack.c index 6f5ad151340..694158b9a50 100644 --- a/arch/sh/kernel/dumpstack.c +++ b/arch/sh/kernel/dumpstack.c @@ -69,19 +69,6 @@ stack_reader_dump(struct task_struct *task, struct pt_regs *regs, } } -static void -print_trace_warning_symbol(void *data, char *msg, unsigned long symbol) -{ - printk(data); - print_symbol(msg, symbol); - printk("\n"); -} - -static void print_trace_warning(void *data, char *msg) -{ - printk("%s%s\n", (char *)data, msg); -} - static int print_trace_stack(void *data, char *name) { printk("%s <%s> ", (char *)data, name); @@ -98,8 +85,6 @@ static void print_trace_address(void *data, unsigned long addr, int reliable) } static const struct stacktrace_ops print_trace_ops = { - .warning = print_trace_warning, - .warning_symbol = print_trace_warning_symbol, .stack = print_trace_stack, .address = print_trace_address, }; diff --git a/arch/sh/kernel/module.c b/arch/sh/kernel/module.c index ae0be697a89..19b1f8826ae 100644 --- a/arch/sh/kernel/module.c +++ b/arch/sh/kernel/module.c @@ -93,6 +93,8 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, #endif switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_SH_NONE: + break; case R_SH_DIR32: value = get_unaligned(location); value += relocation; diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c index d5ca1ef50fa..cc80b614b5f 100644 --- a/arch/sh/kernel/perf_callchain.c +++ b/arch/sh/kernel/perf_callchain.c @@ -14,16 +14,6 @@ #include <asm/unwinder.h> #include <asm/ptrace.h> - -static void callchain_warning(void *data, char *msg) -{ -} - -static void -callchain_warning_symbol(void *data, char *msg, unsigned long symbol) -{ -} - static int callchain_stack(void *data, char *name) { return 0; @@ -38,8 +28,6 @@ static void callchain_address(void *data, unsigned long addr, int reliable) } static const struct stacktrace_ops callchain_ops = { - .warning = callchain_warning, - .warning_symbol = callchain_warning_symbol, .stack = callchain_stack, .address = callchain_address, }; diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c index c2e45c48409..bf989e063a0 100644 --- a/arch/sh/kernel/stacktrace.c +++ b/arch/sh/kernel/stacktrace.c @@ -17,15 +17,6 @@ #include <asm/ptrace.h> #include <asm/stacktrace.h> -static void save_stack_warning(void *data, char *msg) -{ -} - -static void -save_stack_warning_symbol(void *data, char *msg, unsigned long symbol) -{ -} - static int save_stack_stack(void *data, char *name) { return 0; @@ -51,8 +42,6 @@ static void save_stack_address(void *data, unsigned long addr, int reliable) } static const struct stacktrace_ops save_stack_ops = { - .warning = save_stack_warning, - .warning_symbol = save_stack_warning_symbol, .stack = save_stack_stack, .address = save_stack_address, }; @@ -88,8 +77,6 @@ save_stack_address_nosched(void *data, unsigned long addr, int reliable) } static const struct stacktrace_ops save_stack_ops_nosched = { - .warning = save_stack_warning, - .warning_symbol = save_stack_warning_symbol, .stack = save_stack_stack, .address = save_stack_address_nosched, }; diff --git a/arch/sh/kernel/syscalls_32.S b/arch/sh/kernel/syscalls_32.S index 030966a9305..7c486f3e3a3 100644 --- a/arch/sh/kernel/syscalls_32.S +++ b/arch/sh/kernel/syscalls_32.S @@ -380,3 +380,4 @@ ENTRY(sys_call_table) .long sys_open_by_handle_at /* 360 */ .long sys_clock_adjtime .long sys_syncfs + .long sys_sendmmsg diff --git a/arch/sh/kernel/syscalls_64.S b/arch/sh/kernel/syscalls_64.S index ca0a6142ab6..ba1a737afe8 100644 --- a/arch/sh/kernel/syscalls_64.S +++ b/arch/sh/kernel/syscalls_64.S @@ -400,3 +400,4 @@ sys_call_table: .long sys_open_by_handle_at .long sys_clock_adjtime .long sys_syncfs + .long sys_sendmmsg diff --git a/arch/sh/oprofile/backtrace.c b/arch/sh/oprofile/backtrace.c index 37f3a75ea6c..9c88dcd56e8 100644 --- a/arch/sh/oprofile/backtrace.c +++ b/arch/sh/oprofile/backtrace.c @@ -23,17 +23,6 @@ #include <asm/sections.h> #include <asm/stacktrace.h> -static void backtrace_warning_symbol(void *data, char *msg, - unsigned long symbol) -{ - /* Ignore warnings */ -} - -static void backtrace_warning(void *data, char *msg) -{ - /* Ignore warnings */ -} - static int backtrace_stack(void *data, char *name) { /* Yes, we want all stacks */ @@ -49,8 +38,6 @@ static void backtrace_address(void *data, unsigned long addr, int reliable) } static struct stacktrace_ops backtrace_ops = { - .warning = backtrace_warning, - .warning_symbol = backtrace_warning_symbol, .stack = backtrace_stack, .address = backtrace_address, }; diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index f975d24890f..036e5865eb4 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -24,6 +24,7 @@ #include <linux/ioport.h> #include <linux/io.h> #include <linux/clk.h> +#include <linux/pm_runtime.h> #include <linux/irq.h> #include <linux/err.h> #include <linux/clocksource.h> @@ -152,10 +153,12 @@ static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate) { int ret; - /* enable clock */ + /* wake up device and enable clock */ + pm_runtime_get_sync(&p->pdev->dev); ret = clk_enable(p->clk); if (ret) { dev_err(&p->pdev->dev, "cannot enable clock\n"); + pm_runtime_put_sync(&p->pdev->dev); return ret; } @@ -187,8 +190,9 @@ static void sh_cmt_disable(struct sh_cmt_priv *p) /* disable interrupts in CMT block */ sh_cmt_write(p, CMCSR, 0); - /* stop clock */ + /* stop clock and mark device as idle */ clk_disable(p->clk); + pm_runtime_put_sync(&p->pdev->dev); } /* private flags */ @@ -416,11 +420,15 @@ static cycle_t sh_cmt_clocksource_read(struct clocksource *cs) static int sh_cmt_clocksource_enable(struct clocksource *cs) { + int ret; struct sh_cmt_priv *p = cs_to_sh_cmt(cs); p->total_cycles = 0; - return sh_cmt_start(p, FLAG_CLOCKSOURCE); + ret = sh_cmt_start(p, FLAG_CLOCKSOURCE); + if (!ret) + __clocksource_updatefreq_hz(cs, p->rate); + return ret; } static void sh_cmt_clocksource_disable(struct clocksource *cs) @@ -448,19 +456,10 @@ static int sh_cmt_register_clocksource(struct sh_cmt_priv *p, cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8); cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; - /* clk_get_rate() needs an enabled clock */ - clk_enable(p->clk); - p->rate = clk_get_rate(p->clk) / ((p->width == 16) ? 512 : 8); - clk_disable(p->clk); - - /* TODO: calculate good shift from rate and counter bit width */ - cs->shift = 0; - cs->mult = clocksource_hz2mult(p->rate, cs->shift); - dev_info(&p->pdev->dev, "used as clock source\n"); - clocksource_register(cs); - + /* Register with dummy 1 Hz value, gets updated in ->enable() */ + clocksource_register_hz(cs, 1); return 0; } @@ -665,6 +664,7 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev) if (p) { dev_info(&pdev->dev, "kept as earlytimer\n"); + pm_runtime_enable(&pdev->dev); return 0; } @@ -679,6 +679,9 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev) kfree(p); platform_set_drvdata(pdev, NULL); } + + if (!is_early_platform_device(pdev)) + pm_runtime_enable(&pdev->dev); return ret; } diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c index 36aba992306..17296288a20 100644 --- a/drivers/clocksource/sh_tmu.c +++ b/drivers/clocksource/sh_tmu.c @@ -25,6 +25,7 @@ #include <linux/delay.h> #include <linux/io.h> #include <linux/clk.h> +#include <linux/pm_runtime.h> #include <linux/irq.h> #include <linux/err.h> #include <linux/clocksource.h> @@ -109,10 +110,12 @@ static int sh_tmu_enable(struct sh_tmu_priv *p) { int ret; - /* enable clock */ + /* wake up device and enable clock */ + pm_runtime_get_sync(&p->pdev->dev); ret = clk_enable(p->clk); if (ret) { dev_err(&p->pdev->dev, "cannot enable clock\n"); + pm_runtime_put_sync(&p->pdev->dev); return ret; } @@ -141,8 +144,9 @@ static void sh_tmu_disable(struct sh_tmu_priv *p) /* disable interrupts in TMU block */ sh_tmu_write(p, TCR, 0x0000); - /* stop clock */ + /* stop clock and mark device as idle */ clk_disable(p->clk); + pm_runtime_put_sync(&p->pdev->dev); } static void sh_tmu_set_next(struct sh_tmu_priv *p, unsigned long delta, @@ -199,8 +203,12 @@ static cycle_t sh_tmu_clocksource_read(struct clocksource *cs) static int sh_tmu_clocksource_enable(struct clocksource *cs) { struct sh_tmu_priv *p = cs_to_sh_tmu(cs); + int ret; - return sh_tmu_enable(p); + ret = sh_tmu_enable(p); + if (!ret) + __clocksource_updatefreq_hz(cs, p->rate); + return ret; } static void sh_tmu_clocksource_disable(struct clocksource *cs) @@ -221,17 +229,10 @@ static int sh_tmu_register_clocksource(struct sh_tmu_priv *p, cs->mask = CLOCKSOURCE_MASK(32); cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; - /* clk_get_rate() needs an enabled clock */ - clk_enable(p->clk); - /* channel will be configured at parent clock / 4 */ - p->rate = clk_get_rate(p->clk) / 4; - clk_disable(p->clk); - /* TODO: calculate good shift from rate and counter bit width */ - cs->shift = 10; - cs->mult = clocksource_hz2mult(p->rate, cs->shift); - dev_info(&p->pdev->dev, "used as clock source\n"); - clocksource_register(cs); + + /* Register with dummy 1 Hz value, gets updated in ->enable() */ + clocksource_register_hz(cs, 1); return 0; } @@ -414,6 +415,7 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev) if (p) { dev_info(&pdev->dev, "kept as earlytimer\n"); + pm_runtime_enable(&pdev->dev); return 0; } @@ -428,6 +430,9 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev) kfree(p); platform_set_drvdata(pdev, NULL); } + + if (!is_early_platform_device(pdev)) + pm_runtime_enable(&pdev->dev); return ret; } diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index d50da41ac32..dcc1b2139ff 100644 --- a/drivers/dma/shdma.c +++ b/drivers/dma/shdma.c @@ -48,7 +48,7 @@ enum sh_dmae_desc_status { /* * Used for write-side mutual exclusion for the global device list, - * read-side synchronization by way of RCU. + * read-side synchronization by way of RCU, and per-controller data. */ static DEFINE_SPINLOCK(sh_dmae_lock); static LIST_HEAD(sh_dmae_devices); @@ -85,22 +85,35 @@ static void dmaor_write(struct sh_dmae_device *shdev, u16 data) */ static void sh_dmae_ctl_stop(struct sh_dmae_device *shdev) { - unsigned short dmaor = dmaor_read(shdev); + unsigned short dmaor; + unsigned long flags; + + spin_lock_irqsave(&sh_dmae_lock, flags); + dmaor = dmaor_read(shdev); dmaor_write(shdev, dmaor & ~(DMAOR_NMIF | DMAOR_AE | DMAOR_DME)); + + spin_unlock_irqrestore(&sh_dmae_lock, flags); } static int sh_dmae_rst(struct sh_dmae_device *shdev) { unsigned short dmaor; + unsigned long flags; - sh_dmae_ctl_stop(shdev); - dmaor = dmaor_read(shdev) | shdev->pdata->dmaor_init; + spin_lock_irqsave(&sh_dmae_lock, flags); - dmaor_write(shdev, dmaor); - if (dmaor_read(shdev) & (DMAOR_AE | DMAOR_NMIF)) { - pr_warning("dma-sh: Can't initialize DMAOR.\n"); - return -EINVAL; + dmaor = dmaor_read(shdev) & ~(DMAOR_NMIF | DMAOR_AE | DMAOR_DME); + + dmaor_write(shdev, dmaor | shdev->pdata->dmaor_init); + + dmaor = dmaor_read(shdev); + + spin_unlock_irqrestore(&sh_dmae_lock, flags); + + if (dmaor & (DMAOR_AE | DMAOR_NMIF)) { + dev_warn(shdev->common.dev, "Can't initialize DMAOR.\n"); + return -EIO; } return 0; } @@ -184,7 +197,7 @@ static void dmae_init(struct sh_dmae_chan *sh_chan) static int dmae_set_chcr(struct sh_dmae_chan *sh_chan, u32 val) { - /* When DMA was working, can not set data to CHCR */ + /* If DMA is active, cannot set CHCR. TODO: remove this superfluous check */ if (dmae_is_busy(sh_chan)) return -EBUSY; @@ -374,7 +387,12 @@ static void sh_dmae_free_chan_resources(struct dma_chan *chan) LIST_HEAD(list); int descs = sh_chan->descs_allocated; + /* Protect against ISR */ + spin_lock_irq(&sh_chan->desc_lock); dmae_halt(sh_chan); + spin_unlock_irq(&sh_chan->desc_lock); + + /* Now no new interrupts will occur */ /* Prepared and not submitted descriptors can still be on the queue */ if (!list_empty(&sh_chan->ld_queue)) @@ -384,6 +402,7 @@ static void sh_dmae_free_chan_resources(struct dma_chan *chan) /* The caller is holding dma_list_mutex */ struct sh_dmae_slave *param = chan->private; clear_bit(param->slave_id, sh_dmae_slave_used); + chan->private = NULL; } spin_lock_bh(&sh_chan->desc_lock); @@ -563,8 +582,6 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_memcpy( if (!chan || !len) return NULL; - chan->private = NULL; - sh_chan = to_sh_chan(chan); sg_init_table(&sg, 1); @@ -620,9 +637,9 @@ static int sh_dmae_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, if (!chan) return -EINVAL; + spin_lock_bh(&sh_chan->desc_lock); dmae_halt(sh_chan); - spin_lock_bh(&sh_chan->desc_lock); if (!list_empty(&sh_chan->ld_queue)) { /* Record partial transfer */ struct sh_desc *desc = list_entry(sh_chan->ld_queue.next, @@ -716,6 +733,14 @@ static dma_async_tx_callback __ld_cleanup(struct sh_dmae_chan *sh_chan, bool all list_move(&desc->node, &sh_chan->ld_free); } } + + if (all && !callback) + /* + * Terminating and the loop completed normally: forgive + * uncompleted cookies + */ + sh_chan->completed_cookie = sh_chan->common.cookie; + spin_unlock_bh(&sh_chan->desc_lock); if (callback) @@ -733,10 +758,6 @@ static void sh_dmae_chan_ld_cleanup(struct sh_dmae_chan *sh_chan, bool all) { while (__ld_cleanup(sh_chan, all)) ; - - if (all) - /* Terminating - forgive uncompleted cookies */ - sh_chan->completed_cookie = sh_chan->common.cookie; } static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan) @@ -782,8 +803,10 @@ static enum dma_status sh_dmae_tx_status(struct dma_chan *chan, sh_dmae_chan_ld_cleanup(sh_chan, false); - last_used = chan->cookie; + /* First read completed cookie to avoid a skew */ last_complete = sh_chan->completed_cookie; + rmb(); + last_used = chan->cookie; BUG_ON(last_complete < 0); dma_set_tx_state(txstate, last_complete, last_used, 0); @@ -813,8 +836,12 @@ static enum dma_status sh_dmae_tx_status(struct dma_chan *chan, static irqreturn_t sh_dmae_interrupt(int irq, void *data) { irqreturn_t ret = IRQ_NONE; - struct sh_dmae_chan *sh_chan = (struct sh_dmae_chan *)data; - u32 chcr = sh_dmae_readl(sh_chan, CHCR); + struct sh_dmae_chan *sh_chan = data; + u32 chcr; + + spin_lock(&sh_chan->desc_lock); + + chcr = sh_dmae_readl(sh_chan, CHCR); if (chcr & CHCR_TE) { /* DMA stop */ @@ -824,10 +851,13 @@ static irqreturn_t sh_dmae_interrupt(int irq, void *data) tasklet_schedule(&sh_chan->tasklet); } + spin_unlock(&sh_chan->desc_lock); + return ret; } -static unsigned int sh_dmae_reset(struct sh_dmae_device *shdev) +/* Called from error IRQ or NMI */ +static bool sh_dmae_reset(struct sh_dmae_device *shdev) { unsigned int handled = 0; int i; @@ -839,22 +869,32 @@ static unsigned int sh_dmae_reset(struct sh_dmae_device *shdev) for (i = 0; i < SH_DMAC_MAX_CHANNELS; i++) { struct sh_dmae_chan *sh_chan = shdev->chan[i]; struct sh_desc *desc; + LIST_HEAD(dl); if (!sh_chan) continue; + spin_lock(&sh_chan->desc_lock); + /* Stop the channel */ dmae_halt(sh_chan); + list_splice_init(&sh_chan->ld_queue, &dl); + + spin_unlock(&sh_chan->desc_lock); + /* Complete all */ - list_for_each_entry(desc, &sh_chan->ld_queue, node) { + list_for_each_entry(desc, &dl, node) { struct dma_async_tx_descriptor *tx = &desc->async_tx; desc->mark = DESC_IDLE; if (tx->callback) tx->callback(tx->callback_param); } - list_splice_init(&sh_chan->ld_queue, &sh_chan->ld_free); + spin_lock(&sh_chan->desc_lock); + list_splice(&dl, &sh_chan->ld_free); + spin_unlock(&sh_chan->desc_lock); + handled++; } @@ -867,10 +907,11 @@ static irqreturn_t sh_dmae_err(int irq, void *data) { struct sh_dmae_device *shdev = data; - if (dmaor_read(shdev) & DMAOR_AE) - return IRQ_RETVAL(sh_dmae_reset(data)); - else + if (!(dmaor_read(shdev) & DMAOR_AE)) return IRQ_NONE; + + sh_dmae_reset(data); + return IRQ_HANDLED; } static void dmae_do_tasklet(unsigned long data) @@ -902,17 +943,11 @@ static void dmae_do_tasklet(unsigned long data) static bool sh_dmae_nmi_notify(struct sh_dmae_device *shdev) { - unsigned int handled; - /* Fast path out if NMIF is not asserted for this controller */ if ((dmaor_read(shdev) & DMAOR_NMIF) == 0) return false; - handled = sh_dmae_reset(shdev); - if (handled) - return true; - - return false; + return sh_dmae_reset(shdev); } static int sh_dmae_nmi_handler(struct notifier_block *self, @@ -982,9 +1017,6 @@ static int __devinit sh_dmae_chan_probe(struct sh_dmae_device *shdev, int id, tasklet_init(&new_sh_chan->tasklet, dmae_do_tasklet, (unsigned long)new_sh_chan); - /* Init the channel */ - dmae_init(new_sh_chan); - spin_lock_init(&new_sh_chan->desc_lock); /* Init descripter manage list */ @@ -1045,7 +1077,6 @@ static int __init sh_dmae_probe(struct platform_device *pdev) struct sh_dmae_pdata *pdata = pdev->dev.platform_data; unsigned long irqflags = IRQF_DISABLED, chan_flag[SH_DMAC_MAX_CHANNELS] = {}; - unsigned long flags; int errirq, chan_irq[SH_DMAC_MAX_CHANNELS]; int err, i, irq_cnt = 0, irqres = 0; struct sh_dmae_device *shdev; @@ -1111,11 +1142,11 @@ static int __init sh_dmae_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); - spin_lock_irqsave(&sh_dmae_lock, flags); + spin_lock_irq(&sh_dmae_lock); list_add_tail_rcu(&shdev->node, &sh_dmae_devices); - spin_unlock_irqrestore(&sh_dmae_lock, flags); + spin_unlock_irq(&sh_dmae_lock); - /* reset dma controller */ + /* reset dma controller - only needed as a test */ err = sh_dmae_rst(shdev); if (err) goto rst_err; @@ -1218,15 +1249,18 @@ eirqres: eirq_err: #endif rst_err: - spin_lock_irqsave(&sh_dmae_lock, flags); + spin_lock_irq(&sh_dmae_lock); list_del_rcu(&shdev->node); - spin_unlock_irqrestore(&sh_dmae_lock, flags); + spin_unlock_irq(&sh_dmae_lock); pm_runtime_put(&pdev->dev); + pm_runtime_disable(&pdev->dev); + if (dmars) iounmap(shdev->dmars); emapdmars: iounmap(shdev->chan_reg); + synchronize_rcu(); emapchan: kfree(shdev); ealloc: @@ -1242,7 +1276,6 @@ static int __exit sh_dmae_remove(struct platform_device *pdev) { struct sh_dmae_device *shdev = platform_get_drvdata(pdev); struct resource *res; - unsigned long flags; int errirq = platform_get_irq(pdev, 0); dma_async_device_unregister(&shdev->common); @@ -1250,9 +1283,9 @@ static int __exit sh_dmae_remove(struct platform_device *pdev) if (errirq > 0) free_irq(errirq, shdev); - spin_lock_irqsave(&sh_dmae_lock, flags); + spin_lock_irq(&sh_dmae_lock); list_del_rcu(&shdev->node); - spin_unlock_irqrestore(&sh_dmae_lock, flags); + spin_unlock_irq(&sh_dmae_lock); /* channel data remove */ sh_dmae_chan_remove(shdev); @@ -1263,6 +1296,7 @@ static int __exit sh_dmae_remove(struct platform_device *pdev) iounmap(shdev->dmars); iounmap(shdev->chan_reg); + synchronize_rcu(); kfree(shdev); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1281,12 +1315,78 @@ static void sh_dmae_shutdown(struct platform_device *pdev) sh_dmae_ctl_stop(shdev); } +static int sh_dmae_runtime_suspend(struct device *dev) +{ + return 0; +} + +static int sh_dmae_runtime_resume(struct device *dev) +{ + struct sh_dmae_device *shdev = dev_get_drvdata(dev); + + return sh_dmae_rst(shdev); +} + +#ifdef CONFIG_PM +static int sh_dmae_suspend(struct device *dev) +{ + struct sh_dmae_device *shdev = dev_get_drvdata(dev); + int i; + + for (i = 0; i < shdev->pdata->channel_num; i++) { + struct sh_dmae_chan *sh_chan = shdev->chan[i]; + if (sh_chan->descs_allocated) + sh_chan->pm_error = pm_runtime_put_sync(dev); + } + + return 0; +} + +static int sh_dmae_resume(struct device *dev) +{ + struct sh_dmae_device *shdev = dev_get_drvdata(dev); + int i; + + for (i = 0; i < shdev->pdata->channel_num; i++) { + struct sh_dmae_chan *sh_chan = shdev->chan[i]; + struct sh_dmae_slave *param = sh_chan->common.private; + + if (!sh_chan->descs_allocated) + continue; + + if (!sh_chan->pm_error) + pm_runtime_get_sync(dev); + + if (param) { + const struct sh_dmae_slave_config *cfg = param->config; + dmae_set_dmars(sh_chan, cfg->mid_rid); + dmae_set_chcr(sh_chan, cfg->chcr); + } else { + dmae_init(sh_chan); + } + } + + return 0; +} +#else +#define sh_dmae_suspend NULL +#define sh_dmae_resume NULL +#endif + +const struct dev_pm_ops sh_dmae_pm = { + .suspend = sh_dmae_suspend, + .resume = sh_dmae_resume, + .runtime_suspend = sh_dmae_runtime_suspend, + .runtime_resume = sh_dmae_runtime_resume, +}; + static struct platform_driver sh_dmae_driver = { .remove = __exit_p(sh_dmae_remove), .shutdown = sh_dmae_shutdown, .driver = { .owner = THIS_MODULE, .name = "sh-dma-engine", + .pm = &sh_dmae_pm, }, }; diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h index 52e4fb17380..3f9d3cd0658 100644 --- a/drivers/dma/shdma.h +++ b/drivers/dma/shdma.h @@ -37,6 +37,7 @@ struct sh_dmae_chan { int id; /* Raw id of this channel */ u32 __iomem *base; char dev_id[16]; /* unique name per DMAC of channel */ + int pm_error; }; struct sh_dmae_device { diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 2707f5e1715..81ccd787562 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -729,3 +729,4 @@ module_exit(sh_mobile_i2c_adap_exit); MODULE_DESCRIPTION("SuperH Mobile I2C Bus Controller driver"); MODULE_AUTHOR("Magnus Damm"); MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:i2c-sh_mobile"); diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c index 6172335ae32..82dd6fb1783 100644 --- a/drivers/sh/clk/cpg.c +++ b/drivers/sh/clk/cpg.c @@ -105,7 +105,7 @@ static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent) /* Rebuild the frequency table */ clk_rate_table_build(clk, clk->freq_table, table->nr_divisors, - table, &clk->arch_flags); + table, NULL); return 0; } diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c index ce5f81d7cc6..1e6e2d0353e 100644 --- a/drivers/sh/intc/virq.c +++ b/drivers/sh/intc/virq.c @@ -235,6 +235,11 @@ restart: irq_set_handler_data(irq, (void *)entry->handle); + /* + * Set the virtual IRQ as non-threadable. + */ + irq_set_nothread(irq); + irq_set_chained_handler(entry->pirq, intc_virq_handler); add_virq_to_pirq(entry->pirq, irq); diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index f35b8fb94b8..ebd8629c108 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -41,6 +41,7 @@ #include <linux/platform_device.h> #include <linux/serial_sci.h> #include <linux/notifier.h> +#include <linux/pm_runtime.h> #include <linux/cpufreq.h> #include <linux/clk.h> #include <linux/ctype.h> @@ -560,6 +561,9 @@ static void sci_break_timer(unsigned long data) { struct sci_port *port = (struct sci_port *)data; + if (port->enable) + port->enable(&port->port); + if (sci_rxd_in(&port->port) == 0) { port->break_flag = 1; sci_schedule_break_timer(port); @@ -569,6 +573,9 @@ static void sci_break_timer(unsigned long data) sci_schedule_break_timer(port); } else port->break_flag = 0; + + if (port->disable) + port->disable(&port->port); } static int sci_handle_errors(struct uart_port *port) @@ -837,6 +844,8 @@ static void sci_clk_enable(struct uart_port *port) { struct sci_port *sci_port = to_sci_port(port); + pm_runtime_get_sync(port->dev); + clk_enable(sci_port->iclk); sci_port->port.uartclk = clk_get_rate(sci_port->iclk); clk_enable(sci_port->fclk); @@ -848,6 +857,8 @@ static void sci_clk_disable(struct uart_port *port) clk_disable(sci_port->fclk); clk_disable(sci_port->iclk); + + pm_runtime_put_sync(port->dev); } static int sci_request_irq(struct sci_port *port) @@ -1756,6 +1767,8 @@ static int __devinit sci_init_single(struct platform_device *dev, sci_port->enable = sci_clk_enable; sci_port->disable = sci_clk_disable; port->dev = &dev->dev; + + pm_runtime_enable(&dev->dev); } sci_port->break_timer.data = (unsigned long)sci_port; @@ -1775,7 +1788,7 @@ static int __devinit sci_init_single(struct platform_device *dev, * * For the muxed case there's nothing more to do. */ - port->irq = p->irqs[SCIx_TXI_IRQ]; + port->irq = p->irqs[SCIx_RXI_IRQ]; if (p->dma_dev) dev_dbg(port->dev, "DMA device %p, tx %d, rx %d\n", @@ -1936,6 +1949,7 @@ static int sci_remove(struct platform_device *dev) clk_put(port->iclk); clk_put(port->fclk); + pm_runtime_disable(&dev->dev); return 0; } diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h index 5fefed53fa4..b04d937c911 100644 --- a/drivers/tty/serial/sh-sci.h +++ b/drivers/tty/serial/sh-sci.h @@ -270,12 +270,12 @@ #elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \ defined(CONFIG_CPU_SUBTYPE_SH7720) || \ defined(CONFIG_CPU_SUBTYPE_SH7721) || \ - defined(CONFIG_ARCH_SH73A0) || \ - defined(CONFIG_ARCH_SH7367) || \ - defined(CONFIG_ARCH_SH7377) + defined(CONFIG_ARCH_SH7367) #define SCIF_FNS(name, scif_offset, scif_size) \ CPU_SCIF_FNS(name, scif_offset, scif_size) -#elif defined(CONFIG_ARCH_SH7372) +#elif defined(CONFIG_ARCH_SH7377) || \ + defined(CONFIG_ARCH_SH7372) || \ + defined(CONFIG_ARCH_SH73A0) #define SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scifb_offset, sh4_scifb_size) \ CPU_SCIx_FNS(name, sh4_scifa_offset, sh4_scifa_size, sh4_scifb_offset, sh4_scifb_size) #define SCIF_FNS(name, scif_offset, scif_size) \ @@ -313,9 +313,7 @@ #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \ defined(CONFIG_CPU_SUBTYPE_SH7720) || \ defined(CONFIG_CPU_SUBTYPE_SH7721) || \ - defined(CONFIG_ARCH_SH73A0) || \ - defined(CONFIG_ARCH_SH7367) || \ - defined(CONFIG_ARCH_SH7377) + defined(CONFIG_ARCH_SH7367) SCIF_FNS(SCSMR, 0x00, 16) SCIF_FNS(SCBRR, 0x04, 8) @@ -326,7 +324,9 @@ SCIF_FNS(SCFDR, 0x1c, 16) SCIF_FNS(SCxTDR, 0x20, 8) SCIF_FNS(SCxRDR, 0x24, 8) SCIF_FNS(SCLSR, 0x00, 0) -#elif defined(CONFIG_ARCH_SH7372) +#elif defined(CONFIG_ARCH_SH7377) || \ + defined(CONFIG_ARCH_SH7372) || \ + defined(CONFIG_ARCH_SH73A0) SCIF_FNS(SCSMR, 0x00, 16) SCIF_FNS(SCBRR, 0x04, 8) SCIF_FNS(SCSCR, 0x08, 16) |