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authorSebastian Reichel <sre@kernel.org>2016-04-30 16:23:12 +0200
committerSebastian Reichel <sre@kernel.org>2016-06-28 00:37:43 +0200
commitb6616be32412a4c9a0f04aec247d2760fcad8cfd (patch)
treef10d15b2e399c57c1fdb485d223ca0307a9e7846 /drivers/hsi
parent8c009f1f5def91a4764410c65f8b5739724b9e19 (diff)
HSI: omap_ssi: do not reset module
module reset and power management rule setup is already done by hwmod. Remove this cruft, which predates hwmod. Signed-off-by: Sebastian Reichel <sre@kernel.org> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/hsi')
-rw-r--r--drivers/hsi/controllers/omap_ssi.h2
-rw-r--r--drivers/hsi/controllers/omap_ssi_core.c19
2 files changed, 1 insertions, 20 deletions
diff --git a/drivers/hsi/controllers/omap_ssi.h b/drivers/hsi/controllers/omap_ssi.h
index 7b4dec2c69ff..ba2f92722c09 100644
--- a/drivers/hsi/controllers/omap_ssi.h
+++ b/drivers/hsi/controllers/omap_ssi.h
@@ -138,7 +138,6 @@ struct gdd_trn {
* @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
* @gdd_gcr: SSI GDD saved context
* @get_loss: Pointer to omap_pm_get_dev_context_loss_count, if any
* @port: Array of pointers of the ports of the controller
@@ -158,7 +157,6 @@ struct omap_ssi_controller {
u32 loss_count;
u32 max_speed;
/* OMAP SSI Controller context */
- u32 sysconfig;
u32 gdd_gcr;
int (*get_loss)(struct device *dev);
struct omap_ssi_port **port;
diff --git a/drivers/hsi/controllers/omap_ssi_core.c b/drivers/hsi/controllers/omap_ssi_core.c
index a3e0febfb64a..54943e439488 100644
--- a/drivers/hsi/controllers/omap_ssi_core.c
+++ b/drivers/hsi/controllers/omap_ssi_core.c
@@ -452,8 +452,6 @@ 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 +459,12 @@ 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);

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