[alsa-devel] [PATCH v2 0/5] soundwire: intel/cadence: better initialization
V2 of the original series 'soundwire: inits and PM additions for 5.4', with PM additions removed since more tests on hardware are required.
Changes since v1: addressed feedback from Vinod Koul clarified init changes impact Intel and Cadence sides remove unnecessary intermediate variable disable interrupts when exit_reset fails, updated error handling returned -EINVAL on debugfs invalid parameter
Pierre-Louis Bossart (5): soundwire: intel/cadence: fix startup sequence soundwire: cadence_master: add hw_reset capability in debugfs soundwire: intel: add helper for initialization soundwire: intel/cadence: add flag for interrupt enable soundwire: cadence_master: make clock stop exit configurable on init
drivers/soundwire/cadence_master.c | 131 +++++++++++++++++++++-------- drivers/soundwire/cadence_master.h | 5 +- drivers/soundwire/intel.c | 38 ++++++--- 3 files changed, 126 insertions(+), 48 deletions(-)
Multiple changes squashed in single patch to avoid tick-tock effect and avoid breaking compilation/bisect
1. Per the hardware documentation, all changes to MCP_CONFIG, MCP_CONTROL, MCP_CMDCTRL and MCP_PHYCTRL need to be validated with a self-clearing write to MCP_CONFIG_UPDATE. Add a helper and do the update when the CONFIG is changed.
2. Move interrupt enable after interrupt handler registration
3. Add a new helper to start the hardware bus reset with maximum duration to make sure the Slave(s) correctly detect the reset pattern and to ensure electrical conflicts can be resolved.
4. flush command FIFOs
Better error handling will be provided after interrupt disable is provided in follow-up patches.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/cadence_master.c | 80 +++++++++++++++++++++--------- drivers/soundwire/cadence_master.h | 1 + drivers/soundwire/intel.c | 14 +++++- 3 files changed, 69 insertions(+), 26 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 502ed4ec8f07..e3d06330d125 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -231,6 +231,22 @@ static int cdns_clear_bit(struct sdw_cdns *cdns, int offset, u32 value) return -EAGAIN; }
+/* + * all changes to the MCP_CONFIG, MCP_CONTROL, MCP_CMDCTRL and MCP_PHYCTRL + * need to be confirmed with a write to MCP_CONFIG_UPDATE + */ +static int cdns_update_config(struct sdw_cdns *cdns) +{ + int ret; + + ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE, + CDNS_MCP_CONFIG_UPDATE_BIT); + if (ret < 0) + dev_err(cdns->dev, "Config update timedout\n"); + + return ret; +} + /* * debugfs */ @@ -752,7 +768,38 @@ EXPORT_SYMBOL(sdw_cdns_thread); /* * init routines */ -static int _cdns_enable_interrupt(struct sdw_cdns *cdns) + +/** + * sdw_cdns_exit_reset() - Program reset parameters and start bus operations + * @cdns: Cadence instance + */ +int sdw_cdns_exit_reset(struct sdw_cdns *cdns) +{ + /* program maximum length reset to be safe */ + cdns_updatel(cdns, CDNS_MCP_CONTROL, + CDNS_MCP_CONTROL_RST_DELAY, + CDNS_MCP_CONTROL_RST_DELAY); + + /* use hardware generated reset */ + cdns_updatel(cdns, CDNS_MCP_CONTROL, + CDNS_MCP_CONTROL_HW_RST, + CDNS_MCP_CONTROL_HW_RST); + + /* enable bus operations with clock and data */ + cdns_updatel(cdns, CDNS_MCP_CONFIG, + CDNS_MCP_CONFIG_OP, + CDNS_MCP_CONFIG_OP_NORMAL); + + /* commit changes */ + return cdns_update_config(cdns); +} +EXPORT_SYMBOL(sdw_cdns_exit_reset); + +/** + * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config + * @cdns: Cadence instance + */ +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) { u32 mask;
@@ -784,24 +831,8 @@ static int _cdns_enable_interrupt(struct sdw_cdns *cdns)
cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
- return 0; -} - -/** - * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config - * @cdns: Cadence instance - */ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) -{ - int ret; - - _cdns_enable_interrupt(cdns); - ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE, - CDNS_MCP_CONFIG_UPDATE_BIT); - if (ret < 0) - dev_err(cdns->dev, "Config update timedout\n"); - - return ret; + /* commit changes */ + return cdns_update_config(cdns); } EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
@@ -975,6 +1006,10 @@ int sdw_cdns_init(struct sdw_cdns *cdns) cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, CDNS_DEFAULT_SSP_INTERVAL); cdns_writel(cdns, CDNS_MCP_SSP_CTRL1, CDNS_DEFAULT_SSP_INTERVAL);
+ /* flush command FIFOs */ + cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_CMD_RST, + CDNS_MCP_CONTROL_CMD_RST); + /* Set cmd accept mode */ cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_CMD_ACCEPT, CDNS_MCP_CONTROL_CMD_ACCEPT); @@ -997,13 +1032,10 @@ int sdw_cdns_init(struct sdw_cdns *cdns) /* Set cmd mode for Tx and Rx cmds */ val &= ~CDNS_MCP_CONFIG_CMD;
- /* Set operation to normal */ - val &= ~CDNS_MCP_CONFIG_OP; - val |= CDNS_MCP_CONFIG_OP_NORMAL; - cdns_writel(cdns, CDNS_MCP_CONFIG, val);
- return 0; + /* commit changes */ + return cdns_update_config(cdns); } EXPORT_SYMBOL(sdw_cdns_init);
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 0b72b7094735..1a67728c5000 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -161,6 +161,7 @@ irqreturn_t sdw_cdns_thread(int irq, void *dev_id); int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); +int sdw_cdns_exit_reset(struct sdw_cdns *cdns); int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
#ifdef CONFIG_DEBUG_FS diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index bcc5077b2814..57e599919479 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1044,8 +1044,6 @@ static int intel_probe(struct platform_device *pdev) if (ret) goto err_init;
- ret = sdw_cdns_enable_interrupt(&sdw->cdns); - /* Read the PDI config and initialize cadence PDI */ intel_pdi_init(sdw, &config); ret = sdw_cdns_pdi_init(&sdw->cdns, config); @@ -1063,6 +1061,18 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
+ ret = sdw_cdns_enable_interrupt(&sdw->cdns); + if (ret < 0) { + dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); + goto err_init; + } + + ret = sdw_cdns_exit_reset(&sdw->cdns); + if (ret < 0) { + dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n"); + goto err_init; + } + /* Register DAIs */ ret = intel_register_dai(sdw); if (ret) {
Provide debugfs capability to kick link and devices into hard-reset (as defined by MIPI). This capability is really useful when some devices are no longer responsive and/or to check the software handling of resynchronization.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/cadence_master.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index e3d06330d125..5f900cf2acb9 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -340,6 +340,23 @@ static int cdns_reg_show(struct seq_file *s, void *data) } DEFINE_SHOW_ATTRIBUTE(cdns_reg);
+static int cdns_hw_reset(void *data, u64 value) +{ + struct sdw_cdns *cdns = data; + int ret; + + if (value != 1) + return -EINVAL; + + ret = sdw_cdns_exit_reset(cdns); + + dev_dbg(cdns->dev, "link hw_reset done: %d\n", ret); + + return ret; +} + +DEFINE_DEBUGFS_ATTRIBUTE(cdns_hw_reset_fops, NULL, cdns_hw_reset, "%llu\n"); + /** * sdw_cdns_debugfs_init() - Cadence debugfs init * @cdns: Cadence instance @@ -348,6 +365,9 @@ DEFINE_SHOW_ATTRIBUTE(cdns_reg); void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root) { debugfs_create_file("cdns-registers", 0400, root, cdns, &cdns_reg_fops); + + debugfs_create_file("cdns-hw-reset", 0200, root, cdns, + &cdns_hw_reset_fops); } EXPORT_SYMBOL_GPL(sdw_cdns_debugfs_init);
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Provide debugfs capability to kick link and devices into hard-reset (as defined by MIPI). This capability is really useful when some devices are no longer responsive and/or to check the software handling of resynchronization.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index e3d06330d125..5f900cf2acb9 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -340,6 +340,23 @@ static int cdns_reg_show(struct seq_file *s, void *data) } DEFINE_SHOW_ATTRIBUTE(cdns_reg);
+static int cdns_hw_reset(void *data, u64 value) +{
- struct sdw_cdns *cdns = data;
- int ret;
- if (value != 1)
return -EINVAL;- ret = sdw_cdns_exit_reset(cdns);
So we are performing reset of the device behind the kernel, so I think it makes sense to mark the kernel as tainted.
- dev_dbg(cdns->dev, "link hw_reset done: %d\n", ret);
- return ret;
We may want to get rid of the debug and do: return sdw_cdns_exit_reset();
+}
+DEFINE_DEBUGFS_ATTRIBUTE(cdns_hw_reset_fops, NULL, cdns_hw_reset, "%llu\n");
/**
- sdw_cdns_debugfs_init() - Cadence debugfs init
- @cdns: Cadence instance
@@ -348,6 +365,9 @@ DEFINE_SHOW_ATTRIBUTE(cdns_reg); void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root) { debugfs_create_file("cdns-registers", 0400, root, cdns, &cdns_reg_fops);
- debugfs_create_file("cdns-hw-reset", 0200, root, cdns,
&cdns_hw_reset_fops);} EXPORT_SYMBOL_GPL(sdw_cdns_debugfs_init);
-- 2.20.1
On 10/20/19 11:04 PM, Vinod Koul wrote:
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Provide debugfs capability to kick link and devices into hard-reset (as defined by MIPI). This capability is really useful when some devices are no longer responsive and/or to check the software handling of resynchronization.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index e3d06330d125..5f900cf2acb9 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -340,6 +340,23 @@ static int cdns_reg_show(struct seq_file *s, void *data) } DEFINE_SHOW_ATTRIBUTE(cdns_reg);
+static int cdns_hw_reset(void *data, u64 value) +{
- struct sdw_cdns *cdns = data;
- int ret;
- if (value != 1)
return -EINVAL;- ret = sdw_cdns_exit_reset(cdns);
So we are performing reset of the device behind the kernel, so I think it makes sense to mark the kernel as tainted.
This is a bit ironic. This reset is the only way to prove that the enumeration is done right and that all the subsystem fully recovers, and yet we'd mark the kernel as 'untrustworthy' and all bug reports would be ignored.
I don't mind doing this but we'd have to agree on a code. The only one I see relevant is "taint requested by userspace application", which is not exactly super useful.
- dev_dbg(cdns->dev, "link hw_reset done: %d\n", ret);
- return ret;
We may want to get rid of the debug and do: return sdw_cdns_exit_reset();
this debug line is useful, it marks the start of the reset sequence and that's valuable information. Remove it and you've lost the ability to analyze the dmesg logs. It's even more useful if we mark the kernel as tainted as you suggested above.
+}
+DEFINE_DEBUGFS_ATTRIBUTE(cdns_hw_reset_fops, NULL, cdns_hw_reset, "%llu\n");
- /**
- sdw_cdns_debugfs_init() - Cadence debugfs init
- @cdns: Cadence instance
@@ -348,6 +365,9 @@ DEFINE_SHOW_ATTRIBUTE(cdns_reg); void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root) { debugfs_create_file("cdns-registers", 0400, root, cdns, &cdns_reg_fops);
- debugfs_create_file("cdns-hw-reset", 0200, root, cdns,
&cdns_hw_reset_fops);-- 2.20.1
On 21-10-19, 05:20, Pierre-Louis Bossart wrote:
On 10/20/19 11:04 PM, Vinod Koul wrote:
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Provide debugfs capability to kick link and devices into hard-reset (as defined by MIPI). This capability is really useful when some devices are no longer responsive and/or to check the software handling of resynchronization.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index e3d06330d125..5f900cf2acb9 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -340,6 +340,23 @@ static int cdns_reg_show(struct seq_file *s, void *data) } DEFINE_SHOW_ATTRIBUTE(cdns_reg); +static int cdns_hw_reset(void *data, u64 value) +{
- struct sdw_cdns *cdns = data;
- int ret;
- if (value != 1)
return -EINVAL;- ret = sdw_cdns_exit_reset(cdns);
So we are performing reset of the device behind the kernel, so I think it makes sense to mark the kernel as tainted.
This is a bit ironic. This reset is the only way to prove that the enumeration is done right and that all the subsystem fully recovers, and yet we'd mark the kernel as 'untrustworthy' and all bug reports would be ignored.
Nope you dont expect this would be done on a production system and for you own testing you can choose not to ignore the reports!
I don't mind doing this but we'd have to agree on a code. The only one I see relevant is "taint requested by userspace application", which is not exactly super useful.
But it does tell you that userspace did something so watch out!
- dev_dbg(cdns->dev, "link hw_reset done: %d\n", ret);
- return ret;
We may want to get rid of the debug and do: return sdw_cdns_exit_reset();
this debug line is useful, it marks the start of the reset sequence and that's valuable information. Remove it and you've lost the ability to analyze the dmesg logs. It's even more useful if we mark the kernel as tainted as you suggested above.
ok
+}
+DEFINE_DEBUGFS_ATTRIBUTE(cdns_hw_reset_fops, NULL, cdns_hw_reset, "%llu\n");
- /**
- sdw_cdns_debugfs_init() - Cadence debugfs init
- @cdns: Cadence instance
@@ -348,6 +365,9 @@ DEFINE_SHOW_ATTRIBUTE(cdns_reg); void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root) { debugfs_create_file("cdns-registers", 0400, root, cdns, &cdns_reg_fops);
- debugfs_create_file("cdns-hw-reset", 0200, root, cdns,
&cdns_hw_reset_fops);-- 2.20.1
Move code to helper for reuse in power management routines
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/intel.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 57e599919479..cdb3243e8823 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -994,6 +994,15 @@ static struct sdw_master_ops sdw_intel_ops = { .post_bank_switch = intel_post_bank_switch, };
+static int intel_init(struct sdw_intel *sdw) +{ + /* Initialize shim and controller */ + intel_link_power_up(sdw); + intel_shim_init(sdw); + + return sdw_cdns_init(&sdw->cdns); +} + /* * probe and init */ @@ -1036,11 +1045,8 @@ static int intel_probe(struct platform_device *pdev) return 0; }
- /* Initialize shim and controller */ - intel_link_power_up(sdw); - intel_shim_init(sdw); - - ret = sdw_cdns_init(&sdw->cdns); + /* Initialize shim, controller and Cadence IP */ + ret = intel_init(sdw); if (ret) goto err_init;
Prepare for future PM support and fix error handling by disabling interrupts as needed.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 12 +++++++----- 3 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 5f900cf2acb9..a71df99ca18f 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -819,14 +819,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset); * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config * @cdns: Cadence instance */ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) { - u32 mask; + u32 slave_intmask0 = 0; + u32 slave_intmask1 = 0; + u32 mask = 0; + + if (!state) + goto update_masks;
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, - CDNS_MCP_SLAVE_INTMASK0_MASK); - cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, - CDNS_MCP_SLAVE_INTMASK1_MASK); + slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK; + slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK;
/* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK; @@ -849,6 +852,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask;
+update_masks: + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
/* commit changes */ diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 1a67728c5000..302351808098 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -162,7 +162,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
#ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index cdb3243e8823..08530c136c5f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1036,7 +1036,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret); - goto err_master_reg; + return ret; }
if (sdw->cdns.bus.prop.hw_disabled) { @@ -1067,7 +1067,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
- ret = sdw_cdns_enable_interrupt(&sdw->cdns); + ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init; @@ -1076,7 +1076,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n"); - goto err_init; + goto err_interrupt; }
/* Register DAIs */ @@ -1084,18 +1084,19 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev); - goto err_dai; + goto err_interrupt; }
intel_debugfs_init(sdw);
return 0;
+err_interrupt: + sdw_cdns_enable_interrupt(&sdw->cdns, false); err_dai: free_irq(sdw->res->irq, sdw); err_init: sdw_delete_bus_master(&sdw->cdns.bus); -err_master_reg: return ret; }
@@ -1107,6 +1108,7 @@ static int intel_remove(struct platform_device *pdev)
if (!sdw->cdns.bus.prop.hw_disabled) { intel_debugfs_exit(sdw); + sdw_cdns_enable_interrupt(&sdw->cdns, false); free_irq(sdw->res->irq, sdw); snd_soc_unregister_component(sdw->cdns.dev); }
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Prepare for future PM support and fix error handling by disabling interrupts as needed.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 12 +++++++----- 3 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 5f900cf2acb9..a71df99ca18f 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -819,14 +819,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset);
- sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
- @cdns: Cadence instance
*/ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) {
- u32 mask;
- u32 slave_intmask0 = 0;
- u32 slave_intmask1 = 0;
- u32 mask = 0;
- if (!state)
goto update_masks;
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0,
CDNS_MCP_SLAVE_INTMASK0_MASK);- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1,
CDNS_MCP_SLAVE_INTMASK1_MASK);
slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK;
slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK;
/* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK;
@@ -849,6 +852,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask;
+update_masks:
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0);
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
/* commit changes */
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 1a67728c5000..302351808098 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -162,7 +162,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
#ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index cdb3243e8823..08530c136c5f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1036,7 +1036,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret);
goto err_master_reg;
return ret;
I am not sure I like this line change, before this IIRC the function and single place of return, so changing this doesn't seem to improve anything here..?
}
if (sdw->cdns.bus.prop.hw_disabled) { @@ -1067,7 +1067,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
- ret = sdw_cdns_enable_interrupt(&sdw->cdns);
- ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init;
@@ -1076,7 +1076,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n");
goto err_init;
goto err_interrupt;}
/* Register DAIs */
@@ -1084,18 +1084,19 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev);
goto err_dai;
goto err_interrupt;}
intel_debugfs_init(sdw);
return 0;
+err_interrupt:
- sdw_cdns_enable_interrupt(&sdw->cdns, false);
err_dai:
Isn't this unused now?
free_irq(sdw->res->irq, sdw); err_init: sdw_delete_bus_master(&sdw->cdns.bus); -err_master_reg: return ret; }
@@ -1107,6 +1108,7 @@ static int intel_remove(struct platform_device *pdev)
if (!sdw->cdns.bus.prop.hw_disabled) { intel_debugfs_exit(sdw);
sdw_cdns_enable_interrupt(&sdw->cdns, false);-- 2.20.1
On 10/20/19 11:14 PM, Vinod Koul wrote:
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Prepare for future PM support and fix error handling by disabling interrupts as needed.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 12 +++++++----- 3 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 5f900cf2acb9..a71df99ca18f 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -819,14 +819,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset);
- sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
- @cdns: Cadence instance
*/ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) {
- u32 mask;
- u32 slave_intmask0 = 0;
- u32 slave_intmask1 = 0;
- u32 mask = 0;
- if (!state)
goto update_masks;
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0,
CDNS_MCP_SLAVE_INTMASK0_MASK);- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1,
CDNS_MCP_SLAVE_INTMASK1_MASK);
slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK;
slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK;
/* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK;
@@ -849,6 +852,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask;
+update_masks:
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0);
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
/* commit changes */
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 1a67728c5000..302351808098 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -162,7 +162,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
#ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index cdb3243e8823..08530c136c5f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1036,7 +1036,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret);
goto err_master_reg;
return ret;I am not sure I like this line change, before this IIRC the function and single place of return, so changing this doesn't seem to improve anything here..?
Doing a goto to do a return is not very nice either.
I can change this, but it doesn't really matter: this entire code will be removed anyways to get rid of platform_devices and the probe itself will be split in two.
}
if (sdw->cdns.bus.prop.hw_disabled) { @@ -1067,7 +1067,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
- ret = sdw_cdns_enable_interrupt(&sdw->cdns);
- ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init;
@@ -1076,7 +1076,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n");
goto err_init;
goto err_interrupt;}
/* Register DAIs */
@@ -1084,18 +1084,19 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev);
goto err_dai;
goto err_interrupt;}
intel_debugfs_init(sdw);
return 0;
+err_interrupt:
- sdw_cdns_enable_interrupt(&sdw->cdns, false); err_dai:
Isn't this unused now?
free_irq(sdw->res->irq, sdw); err_init: sdw_delete_bus_master(&sdw->cdns.bus); -err_master_reg: return ret; }
@@ -1107,6 +1108,7 @@ static int intel_remove(struct platform_device *pdev)
if (!sdw->cdns.bus.prop.hw_disabled) { intel_debugfs_exit(sdw);
sdw_cdns_enable_interrupt(&sdw->cdns, false);-- 2.20.1
On 21-10-19, 05:26, Pierre-Louis Bossart wrote:
On 10/20/19 11:14 PM, Vinod Koul wrote:
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Prepare for future PM support and fix error handling by disabling interrupts as needed.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 12 +++++++----- 3 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 5f900cf2acb9..a71df99ca18f 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -819,14 +819,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset);
- sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
- @cdns: Cadence instance
*/ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) {
- u32 mask;
- u32 slave_intmask0 = 0;
- u32 slave_intmask1 = 0;
- u32 mask = 0;
- if (!state)
goto update_masks;
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0,
CDNS_MCP_SLAVE_INTMASK0_MASK);- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1,
CDNS_MCP_SLAVE_INTMASK1_MASK);
- slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK;
- slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK; /* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK;
@@ -849,6 +852,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask; +update_masks:
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0);
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask); /* commit changes */
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 1a67728c5000..302351808098 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -162,7 +162,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state); #ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index cdb3243e8823..08530c136c5f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1036,7 +1036,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret);
goto err_master_reg;
return ret;I am not sure I like this line change, before this IIRC the function and single place of return, so changing this doesn't seem to improve anything here..?
Doing a goto to do a return is not very nice either.
Hrmm, isn't that what you are doing few lines below. The point here is that this line of change here doesnt change anything, doesnt improve anything so why change :)
I can change this, but it doesn't really matter: this entire code will be removed anyways to get rid of platform_devices and the probe itself will be split in two.
} if (sdw->cdns.bus.prop.hw_disabled) { @@ -1067,7 +1067,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
- ret = sdw_cdns_enable_interrupt(&sdw->cdns);
- ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init;
@@ -1076,7 +1076,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n");
goto err_init;
goto err_interrupt;@@ -1084,18 +1084,19 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev);
goto err_dai;
goto err_interrupt;+err_interrupt:
- sdw_cdns_enable_interrupt(&sdw->cdns, false); err_dai:
Isn't this unused now?
??? you missed this.
On 10/21/19 11:55 PM, Vinod Koul wrote:
On 21-10-19, 05:26, Pierre-Louis Bossart wrote:
On 10/20/19 11:14 PM, Vinod Koul wrote:
On 16-09-19, 14:09, Pierre-Louis Bossart wrote:
Prepare for future PM support and fix error handling by disabling interrupts as needed.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 12 +++++++----- 3 files changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 5f900cf2acb9..a71df99ca18f 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -819,14 +819,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset); * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config * @cdns: Cadence instance */ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) {
- u32 mask;
- u32 slave_intmask0 = 0;
- u32 slave_intmask1 = 0;
- u32 mask = 0;
- if (!state)
goto update_masks;
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0,
CDNS_MCP_SLAVE_INTMASK0_MASK);- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1,
CDNS_MCP_SLAVE_INTMASK1_MASK);
- slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK;
- slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK; /* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK;
@@ -849,6 +852,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask; +update_masks:
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0);
- cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask); /* commit changes */
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 1a67728c5000..302351808098 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -162,7 +162,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state); #ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index cdb3243e8823..08530c136c5f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1036,7 +1036,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret);
goto err_master_reg;
return ret;I am not sure I like this line change, before this IIRC the function and single place of return, so changing this doesn't seem to improve anything here..?
Doing a goto to do a return is not very nice either.
Hrmm, isn't that what you are doing few lines below. The point here is that this line of change here doesnt change anything, doesnt improve anything so why change :)
I knew there was a reason.. the existing code on your soundwire/next branch mixes goto and return, so I chose to use a return for the first case as well.
ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret); goto err_master_reg; >>> changed to return ret; }
if (sdw->cdns.bus.prop.hw_disabled) { dev_info(&pdev->dev, "SoundWire master %d is disabled, ignoring\n", sdw->cdns.bus.link_id); return 0; }
I can change this, but it doesn't really matter: this entire code will be removed anyways to get rid of platform_devices and the probe itself will be split in two.
} if (sdw->cdns.bus.prop.hw_disabled) {@@ -1067,7 +1067,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; }
- ret = sdw_cdns_enable_interrupt(&sdw->cdns);
- ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init;
@@ -1076,7 +1076,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n");
goto err_init;
goto err_interrupt;@@ -1084,18 +1084,19 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev);
goto err_dai;
goto err_interrupt;+err_interrupt:
- sdw_cdns_enable_interrupt(&sdw->cdns, false); err_dai:
Isn't this unused now?
??? you missed this.
fixed.
The use of clock stop is not a requirement, the IP can e.g. be completely power gated and not detect any wakes while in s2idle/deep sleep.
For now clock-stop is not supported anyways so the control parameter is always false. This will be revisited when we add clock stop.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/cadence_master.c | 15 ++++++++------- drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 2 +- 3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index a71df99ca18f..06d83ad88d76 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -996,7 +996,7 @@ static u32 cdns_set_initial_frame_shape(int n_rows, int n_cols) * sdw_cdns_init() - Cadence initialization * @cdns: Cadence instance */ -int sdw_cdns_init(struct sdw_cdns *cdns) +int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit) { struct sdw_bus *bus = &cdns->bus; struct sdw_master_prop *prop = &bus->prop; @@ -1004,12 +1004,13 @@ int sdw_cdns_init(struct sdw_cdns *cdns) int divider; int ret;
- /* Exit clock stop */ - ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, - CDNS_MCP_CONTROL_CLK_STOP_CLR); - if (ret < 0) { - dev_err(cdns->dev, "Couldn't exit from clock stop\n"); - return ret; + if (clock_stop_exit) { + ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, + CDNS_MCP_CONTROL_CLK_STOP_CLR); + if (ret < 0) { + dev_err(cdns->dev, "Couldn't exit from clock stop\n"); + return ret; + } }
/* Set clock divider */ diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 302351808098..9d7a48ac6fc4 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -158,7 +158,7 @@ extern struct sdw_master_ops sdw_cdns_master_ops; irqreturn_t sdw_cdns_irq(int irq, void *dev_id); irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
-int sdw_cdns_init(struct sdw_cdns *cdns); +int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 08530c136c5f..2443b9b32b46 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1000,7 +1000,7 @@ static int intel_init(struct sdw_intel *sdw) intel_link_power_up(sdw); intel_shim_init(sdw);
- return sdw_cdns_init(&sdw->cdns); + return sdw_cdns_init(&sdw->cdns, false); }
/*
On 9/16/19 2:09 PM, Pierre-Louis Bossart wrote:
V2 of the original series 'soundwire: inits and PM additions for 5.4', with PM additions removed since more tests on hardware are required.
Vinod, if you are back at your desk, those patches are almost a month old. thanks!
Changes since v1: addressed feedback from Vinod Koul clarified init changes impact Intel and Cadence sides remove unnecessary intermediate variable disable interrupts when exit_reset fails, updated error handling returned -EINVAL on debugfs invalid parameter
Pierre-Louis Bossart (5): soundwire: intel/cadence: fix startup sequence soundwire: cadence_master: add hw_reset capability in debugfs soundwire: intel: add helper for initialization soundwire: intel/cadence: add flag for interrupt enable soundwire: cadence_master: make clock stop exit configurable on init
drivers/soundwire/cadence_master.c | 131 +++++++++++++++++++++-------- drivers/soundwire/cadence_master.h | 5 +- drivers/soundwire/intel.c | 38 ++++++--- 3 files changed, 126 insertions(+), 48 deletions(-)
participants (2)
-
Pierre-Louis Bossart -
Vinod Koul