+Cris +Stanley Loop in DSP guys in case they would have something to add. > -----Original Message----- > From: Felipe Contreras [mailto:felipe.contre...@gmail.com] > Sent: Sunday, May 16, 2010 10:46 AM > To: linux-omap > Cc: Ramirez Luna, Omar; Guzman Lugo, Fernando; Felipe Contreras > Subject: [PATCH 01/14] dspbridge: deh: refactor into wait_for_timer() > > Self-documenting code is better. > > Signed-off-by: Felipe Contreras <felipe.contre...@gmail.com> > --- > drivers/dsp/bridge/core/ue_deh.c | 65 +++++++++++++++++++-------------- > ---- > 1 files changed, 33 insertions(+), 32 deletions(-) > > diff --git a/drivers/dsp/bridge/core/ue_deh.c > b/drivers/dsp/bridge/core/ue_deh.c > index ab95916..48c11e9 100644 > --- a/drivers/dsp/bridge/core/ue_deh.c > +++ b/drivers/dsp/bridge/core/ue_deh.c > @@ -185,6 +185,38 @@ dsp_status bridge_deh_register_notify(struct deh_mgr > *deh_mgr, u32 event_mask, > return status; > } > > +static void wait_for_timer(void) > +{ > + u32 cnt = 0; > + > + omap_dm_timer_enable(timer); > + > + /* Enable overflow interrupt */ > + omap_dm_timer_set_int_enable(timer, > + GPTIMER_IRQ_OVERFLOW); > + /* > + * Set counter value to overflow counter after > + * one tick and start timer. > + */ > + omap_dm_timer_set_load_start(timer, 0, 0xfffffffe); > + > + /* Wait 80us for timer to overflow */ > + udelay(80); > + > + /* Check interrupt status and wait for interrupt */ > + cnt = 0; > + while (!(omap_dm_timer_read_status(timer) & > + GPTIMER_IRQ_OVERFLOW)) { > + if (cnt++ >= GPTIMER_IRQ_WAIT_MAX_CNT) { > + pr_err("%s: GPTimer interrupt failed\n", > + __func__); > + break; > + } > + } > + > + omap_dm_timer_disable(timer); > +} > + > void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 > dwErrInfo) > { > struct bridge_dev_context *dev_context; > @@ -192,7 +224,6 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 > ulEventMask, u32 dwErrInfo) > u32 hw_mmu_max_tlb_count = 31; > struct cfg_hostres *resources; > hw_status hw_status_obj; > - u32 cnt = 0; > > if (!deh_mgr) > return; > @@ -249,42 +280,12 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 > ulEventMask, u32 dwErrInfo) > &map_attrs, HW_SET, HW_SET); > } > > - /* > - * Send a GP Timer interrupt to DSP. > - * The DSP expects a GP timer interrupt after an > - * MMU-Fault Request GPTimer. > - */ > - if (timer) { > - omap_dm_timer_enable(timer); > - /* Enable overflow interrupt */ > - omap_dm_timer_set_int_enable(timer, > - GPTIMER_IRQ_OVERFLOW); > - /* > - * Set counter value to overflow counter after > - * one tick and start timer. > - */ > - omap_dm_timer_set_load_start(timer, 0, 0xfffffffe); > - > - /* Wait 80us for timer to overflow */ > - udelay(80); > - > - /* Check interrupt status and wait for interrupt */ > - cnt = 0; > - while (!(omap_dm_timer_read_status(timer) & > - GPTIMER_IRQ_OVERFLOW)) { > - if (cnt++ >= GPTIMER_IRQ_WAIT_MAX_CNT) { > - pr_err("%s: GPTimer interrupt failed\n", > - __func__); > - break; > - } > - } > - } > + wait_for_timer(); > > /* Clear MMU interrupt */ > hw_mmu_event_ack(resources->dw_dmmu_base, > HW_MMU_TRANSLATION_FAULT); > dump_dsp_stack(deh_mgr->hbridge_context); > - omap_dm_timer_disable(timer); > break; > #ifdef CONFIG_BRIDGE_NTFY_PWRERR > case DSP_PWRERROR: > -- > 1.7.1
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