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| author | Sebastian Reichel <sre@kernel.org> | 2016-01-31 03:52:38 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2016-05-02 22:56:25 +0300 |
| commit | 4bcf7414528a6b7ca52d28953a732a4cf36063e8 (patch) | |
| tree | a70c2897861ee30a420153a94651a723a70aec1f /drivers/hsi/controllers/omap_ssi.h | |
| parent | 0fae198988b873d30fe9ecb6a6271afb36df97e9 (diff) | |
| download | linux-4bcf7414528a6b7ca52d28953a732a4cf36063e8.tar.xz | |
HSI: omap-ssi: add clk change support
This adds support for frequency changes of the SSI
functional clock, which may occur due to DVFS.
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-By: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/hsi/controllers/omap_ssi.h')
| -rw-r--r-- | drivers/hsi/controllers/omap_ssi.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hsi/controllers/omap_ssi.h b/drivers/hsi/controllers/omap_ssi.h index e493321cb0c3..7b4dec2c69ff 100644 --- a/drivers/hsi/controllers/omap_ssi.h +++ b/drivers/hsi/controllers/omap_ssi.h @@ -134,6 +134,8 @@ struct gdd_trn { * @gdd_tasklet: bottom half for DMA transfers * @gdd_trn: Array of GDD transaction data for ongoing GDD transfers * @lock: lock to serialize access to GDD + * @fck_nb: DVFS notfifier block + * @fck_rate: clock rate * @loss_count: To follow if we need to restore context or not * @max_speed: Maximum TX speed (Kb/s) set by the clients. * @sysconfig: SSI controller saved context @@ -151,6 +153,7 @@ struct omap_ssi_controller { struct tasklet_struct gdd_tasklet; struct gdd_trn gdd_trn[SSI_MAX_GDD_LCH]; spinlock_t lock; + struct notifier_block fck_nb; unsigned long fck_rate; u32 loss_count; u32 max_speed; @@ -164,6 +167,9 @@ struct omap_ssi_controller { #endif }; +void omap_ssi_port_update_fclk(struct hsi_controller *ssi, + struct omap_ssi_port *omap_port); + extern struct platform_driver ssi_port_pdriver; #endif /* __LINUX_HSI_OMAP_SSI_H__ */ |