diff options
Diffstat (limited to 'drivers/i3c/master/dw-i3c-master.c')
| -rw-r--r-- | drivers/i3c/master/dw-i3c-master.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 9ceedf09c3b6..276592a8222e 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -228,6 +228,7 @@ /* List of quirks */ #define AMD_I3C_OD_PP_TIMING BIT(1) +#define DW_I3C_DISABLE_RUNTIME_PM_QUIRK BIT(2) struct dw_i3c_cmd { u32 cmd_lo; @@ -252,6 +253,10 @@ struct dw_i3c_i2c_dev_data { struct i3c_generic_ibi_pool *ibi_pool; }; +struct dw_i3c_drvdata { + u32 flags; +}; + static bool dw_i3c_master_supports_ccc_cmd(struct i3c_master_controller *m, const struct i3c_ccc_cmd *cmd) { @@ -1535,6 +1540,8 @@ int dw_i3c_common_probe(struct dw_i3c_master *master, struct platform_device *pdev) { int ret, irq; + const struct dw_i3c_drvdata *drvdata; + unsigned long quirks = 0; if (!master->platform_ops) master->platform_ops = &dw_i3c_platform_ops_default; @@ -1590,7 +1597,18 @@ int dw_i3c_common_probe(struct dw_i3c_master *master, master->maxdevs = ret >> 16; master->free_pos = GENMASK(master->maxdevs - 1, 0); - master->quirks = (unsigned long)device_get_match_data(&pdev->dev); + if (has_acpi_companion(&pdev->dev)) { + quirks = (unsigned long)device_get_match_data(&pdev->dev); + } else if (pdev->dev.of_node) { + drvdata = device_get_match_data(&pdev->dev); + if (drvdata) + quirks = drvdata->flags; + } + master->quirks = quirks; + + /* Keep controller enabled by preventing runtime suspend */ + if (master->quirks & DW_I3C_DISABLE_RUNTIME_PM_QUIRK) + pm_runtime_get_noresume(&pdev->dev); INIT_WORK(&master->hj_work, dw_i3c_hj_work); ret = i3c_master_register(&master->base, &pdev->dev, @@ -1617,6 +1635,10 @@ void dw_i3c_common_remove(struct dw_i3c_master *master) cancel_work_sync(&master->hj_work); i3c_master_unregister(&master->base); + /* Balance pm_runtime_get_noresume() from probe() */ + if (master->quirks & DW_I3C_DISABLE_RUNTIME_PM_QUIRK) + pm_runtime_put_noidle(master->dev); + pm_runtime_disable(master->dev); pm_runtime_set_suspended(master->dev); pm_runtime_dont_use_autosuspend(master->dev); @@ -1759,8 +1781,15 @@ static void dw_i3c_shutdown(struct platform_device *pdev) pm_runtime_put_autosuspend(master->dev); } +static const struct dw_i3c_drvdata altr_agilex5_drvdata = { + .flags = DW_I3C_DISABLE_RUNTIME_PM_QUIRK, +}; + static const struct of_device_id dw_i3c_master_of_match[] = { { .compatible = "snps,dw-i3c-master-1.00a", }, + { .compatible = "altr,agilex5-dw-i3c-master", + .data = &altr_agilex5_drvdata, + }, {}, }; MODULE_DEVICE_TABLE(of, dw_i3c_master_of_match); |