diff options
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/ti-sysc.c | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index 209baa84db39..5c4d8394d753 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -75,6 +75,7 @@ struct sysc { u32 module_size; void __iomem *module_va; int offsets[SYSC_MAX_REGS]; + struct ti_sysc_module_data *mdata; struct clk **clocks; const char **clock_roles; int nr_clocks; @@ -1012,6 +1013,26 @@ static void sysc_init_revision_quirks(struct sysc *ddata) } } +/* + * Note that pdata->init_module() typically does a reset first. After + * pdata->init_module() is done, PM runtime can be used for the interconnect + * target module. + */ +static int sysc_legacy_init(struct sysc *ddata) +{ + struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev); + int error; + + if (!ddata->legacy_mode || !pdata || !pdata->init_module) + return 0; + + error = pdata->init_module(ddata->dev, ddata->mdata, &ddata->cookie); + if (error == -EEXIST) + error = 0; + + return error; +} + static int sysc_reset(struct sysc *ddata) { int offset = ddata->offsets[SYSC_SYSCONFIG]; @@ -1070,10 +1091,15 @@ static int sysc_init_module(struct sysc *ddata) ddata->revision = sysc_read_revision(ddata); sysc_init_revision_quirks(ddata); + error = sysc_legacy_init(ddata); + if (error) + goto err_main_clocks; + error = sysc_reset(ddata); if (error) dev_err(ddata->dev, "Reset failed with %d\n", error); +err_main_clocks: if (manage_clocks) sysc_disable_main_clocks(ddata); err_opt_clocks: @@ -1715,28 +1741,26 @@ static const struct sysc_capabilities sysc_dra7_mcan = { static int sysc_init_pdata(struct sysc *ddata) { struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev); - struct ti_sysc_module_data mdata; - int error = 0; + struct ti_sysc_module_data *mdata; if (!pdata || !ddata->legacy_mode) return 0; - mdata.name = ddata->legacy_mode; - mdata.module_pa = ddata->module_pa; - mdata.module_size = ddata->module_size; - mdata.offsets = ddata->offsets; - mdata.nr_offsets = SYSC_MAX_REGS; - mdata.cap = ddata->cap; - mdata.cfg = &ddata->cfg; + mdata = devm_kzalloc(ddata->dev, sizeof(*mdata), GFP_KERNEL); + if (!mdata) + return -ENOMEM; - if (!pdata->init_module) - return -ENODEV; + mdata->name = ddata->legacy_mode; + mdata->module_pa = ddata->module_pa; + mdata->module_size = ddata->module_size; + mdata->offsets = ddata->offsets; + mdata->nr_offsets = SYSC_MAX_REGS; + mdata->cap = ddata->cap; + mdata->cfg = &ddata->cfg; - error = pdata->init_module(ddata->dev, &mdata, &ddata->cookie); - if (error == -EEXIST) - error = 0; + ddata->mdata = mdata; - return error; + return 0; } static int sysc_init_match(struct sysc *ddata) |