diff options
Diffstat (limited to 'drivers/hsi/controllers/omap_ssi_core.c')
| -rw-r--r-- | drivers/hsi/controllers/omap_ssi_core.c | 46 |
1 files changed, 18 insertions, 28 deletions
diff --git a/drivers/hsi/controllers/omap_ssi_core.c b/drivers/hsi/controllers/omap_ssi_core.c index a3e0febfb64a..9a29b34ed2c8 100644 --- a/drivers/hsi/controllers/omap_ssi_core.c +++ b/drivers/hsi/controllers/omap_ssi_core.c @@ -58,7 +58,7 @@ static int ssi_debug_show(struct seq_file *m, void *p __maybe_unused) seq_printf(m, "REVISION\t: 0x%08x\n", readl(sys + SSI_REVISION_REG)); seq_printf(m, "SYSCONFIG\t: 0x%08x\n", readl(sys + SSI_SYSCONFIG_REG)); seq_printf(m, "SYSSTATUS\t: 0x%08x\n", readl(sys + SSI_SYSSTATUS_REG)); - pm_runtime_put_sync(ssi->device.parent); + pm_runtime_put(ssi->device.parent); return 0; } @@ -112,7 +112,7 @@ static int ssi_debug_gdd_show(struct seq_file *m, void *p __maybe_unused) readw(gdd + SSI_GDD_CLNK_CTRL_REG(lch))); } - pm_runtime_put_sync(ssi->device.parent); + pm_runtime_put(ssi->device.parent); return 0; } @@ -193,7 +193,7 @@ void ssi_waketest(struct hsi_client *cl, unsigned int enable) } else { writel_relaxed(SSI_WAKE(0), omap_ssi->sys + SSI_CLEAR_WAKE_REG(port->num)); - pm_runtime_put_sync(ssi->device.parent); + pm_runtime_put(ssi->device.parent); } } EXPORT_SYMBOL_GPL(ssi_waketest); @@ -217,7 +217,7 @@ static void ssi_gdd_complete(struct hsi_controller *ssi, unsigned int lch) if (msg->ttype == HSI_MSG_READ) { dir = DMA_FROM_DEVICE; val = SSI_DATAAVAILABLE(msg->channel); - pm_runtime_put_sync(ssi->device.parent); + pm_runtime_put(omap_port->pdev); } else { dir = DMA_TO_DEVICE; val = SSI_DATAACCEPT(msg->channel); @@ -235,7 +235,9 @@ static void ssi_gdd_complete(struct hsi_controller *ssi, unsigned int lch) spin_lock(&omap_port->lock); list_del(&msg->link); /* Dequeue msg */ spin_unlock(&omap_port->lock); - msg->complete(msg); + + list_add_tail(&msg->link, &omap_port->errqueue); + schedule_delayed_work(&omap_port->errqueue_work, 0); return; } spin_lock(&omap_port->lock); @@ -255,7 +257,13 @@ static void ssi_gdd_tasklet(unsigned long dev) unsigned int lch; u32 status_reg; - pm_runtime_get_sync(ssi->device.parent); + pm_runtime_get(ssi->device.parent); + + if (!pm_runtime_active(ssi->device.parent)) { + dev_warn(ssi->device.parent, "ssi_gdd_tasklet called without runtime PM!\n"); + pm_runtime_put(ssi->device.parent); + return; + } status_reg = readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG); for (lch = 0; lch < SSI_MAX_GDD_LCH; lch++) { @@ -265,7 +273,7 @@ static void ssi_gdd_tasklet(unsigned long dev) writel_relaxed(status_reg, sys + SSI_GDD_MPU_IRQ_STATUS_REG); status_reg = readl(sys + SSI_GDD_MPU_IRQ_STATUS_REG); - pm_runtime_put_sync(ssi->device.parent); + pm_runtime_put(ssi->device.parent); if (status_reg) tasklet_hi_schedule(&omap_ssi->gdd_tasklet); @@ -312,7 +320,7 @@ static int ssi_clk_event(struct notifier_block *nb, unsigned long event, continue; /* Workaround for SWBREAK + CAwake down race in CMT */ - tasklet_disable(&omap_port->wake_tasklet); + disable_irq(omap_port->wake_irq); /* stop all ssi communication */ pinctrl_pm_select_idle_state(omap_port->pdev); @@ -338,7 +346,7 @@ static int ssi_clk_event(struct notifier_block *nb, unsigned long event, /* resume ssi communication */ pinctrl_pm_select_default_state(omap_port->pdev); - tasklet_enable(&omap_port->wake_tasklet); + enable_irq(omap_port->wake_irq); } break; @@ -452,8 +460,6 @@ out_err: static int ssi_hw_init(struct hsi_controller *ssi) { struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi); - unsigned int i; - u32 val; int err; err = pm_runtime_get_sync(ssi->device.parent); @@ -461,27 +467,12 @@ static int ssi_hw_init(struct hsi_controller *ssi) dev_err(&ssi->device, "runtime PM failed %d\n", err); return err; } - /* Reseting SSI controller */ - writel_relaxed(SSI_SOFTRESET, omap_ssi->sys + SSI_SYSCONFIG_REG); - val = readl(omap_ssi->sys + SSI_SYSSTATUS_REG); - for (i = 0; ((i < 20) && !(val & SSI_RESETDONE)); i++) { - msleep(20); - val = readl(omap_ssi->sys + SSI_SYSSTATUS_REG); - } - if (!(val & SSI_RESETDONE)) { - dev_err(&ssi->device, "SSI HW reset failed\n"); - pm_runtime_put_sync(ssi->device.parent); - return -EIO; - } /* Reseting GDD */ writel_relaxed(SSI_SWRESET, omap_ssi->gdd + SSI_GDD_GRST_REG); /* Get FCK rate in KHz */ omap_ssi->fck_rate = DIV_ROUND_CLOSEST(ssi_get_clk_rate(ssi), 1000); dev_dbg(&ssi->device, "SSI fck rate %lu KHz\n", omap_ssi->fck_rate); - /* Set default PM settings */ - val = SSI_AUTOIDLE | SSI_SIDLEMODE_SMART | SSI_MIDLEMODE_SMART; - writel_relaxed(val, omap_ssi->sys + SSI_SYSCONFIG_REG); - omap_ssi->sysconfig = val; + writel_relaxed(SSI_CLK_AUTOGATING_ON, omap_ssi->sys + SSI_GDD_GCR_REG); omap_ssi->gdd_gcr = SSI_CLK_AUTOGATING_ON; pm_runtime_put_sync(ssi->device.parent); @@ -552,7 +543,6 @@ static int ssi_probe(struct platform_device *pd) if (err < 0) goto out1; - pm_runtime_irq_safe(&pd->dev); pm_runtime_enable(&pd->dev); err = ssi_hw_init(ssi); |