On Thu, 03 Sep 2015 17:46:32 +0200 Lucas Stach <[email protected]> wrote:
> Hi Peter. > > Sorry, but this patch is wrong. You can't just make up completely ad-hoc > DT bindings. You are pushing platformdata 1:1 into the DT, which is not > how the conversion to DT should be done. > > There is also no pre-existing binding for "ata-generic" in the Linux > kernel which would define any of those properties. Hmmm. in linux-4.2/drivers/ata/pata_of_platform.c I see "ata-generic" with "reg-shift" and "pio-mode" properties. > Most likely your IDE controller is inside some SoC specific block, with > a specific compatible, which may also handle clocks and other required > stuff and that one should instantiate the IDE driver if needed. > > Regards, > Lucas > > Am Donnerstag, den 03.09.2015, 16:38 +0300 schrieb Peter Mamonov: > > Signed-off-by: Peter Mamonov <[email protected]> > > --- > > drivers/ata/intf_platform_ide.c | 35 +++++++++++++++++++++++++++++++++-- > > 1 file changed, 33 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/ata/intf_platform_ide.c > > b/drivers/ata/intf_platform_ide.c > > index 0d392d8..f20e0e0 100644 > > --- a/drivers/ata/intf_platform_ide.c > > +++ b/drivers/ata/intf_platform_ide.c > > @@ -29,6 +29,7 @@ > > #include <ata_drive.h> > > #include <platform_ide.h> > > #include <linux/err.h> > > +#include <of.h> > > > > /** > > * Setup the register specific addresses for an ATA like divice > > @@ -85,10 +86,31 @@ static int platform_ide_probe(struct device_d *dev) > > void *reg_base, *alt_base = NULL; > > struct resource *reg, *alt; > > int mmio = 0; > > + struct device_node *dn = dev->device_node; > > + u32 tmp32; > > > > if (pdata == NULL) { > > - dev_err(dev, "No platform data. Cannot continue\n"); > > - return -EINVAL; > > + /* try to get platform data from the device tree */ > > + if (dn == NULL) { > > + dev_err(dev, "No platform data. Cannot continue\n"); > > + return -EINVAL; > > + } > > + > > + pdata = xzalloc(sizeof(struct ide_port_info)); > > + > > + if (!pdata) { > > + dev_err(dev, "Platform data allocation failed\n"); > > + return -ENOMEM; > > + } > > + device_add_data(dev, pdata, sizeof(struct ide_port_info)); > > + > > + if (of_property_read_bool(dn, "dataif-be")) > > + pdata->dataif_be = 1; > > + > > + if (of_property_read_u32(dn, "reg-shift", &tmp32) == 0) > > + pdata->ioport_shift = (unsigned)tmp32; > > + > > + dev->platform_data = pdata; > > } > > > > reg_base = dev_request_mem_region(dev, 0); > > @@ -136,9 +158,18 @@ static int platform_ide_probe(struct device_d *dev) > > return rc; > > } > > > > +static __maybe_unused struct of_device_id platform_ide_dt_ids[] = { > > + { > > + .compatible = "ata-generic", > > + }, { > > + /* sentinel */ > > + } > > +}; > > + > > static struct driver_d platform_ide_driver = { > > .name = "ide_intf", > > .probe = platform_ide_probe, > > + .of_compatible = DRV_OF_COMPAT(platform_ide_dt_ids), > > }; > > device_platform_driver(platform_ide_driver); > > > > -- > Pengutronix e.K. | Lucas Stach | > Industrial Linux Solutions | http://www.pengutronix.de/ | > > > _______________________________________________ > barebox mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/barebox -- -- Best regards, Antony Pavlov _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
