X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fspi%2Fspi-uclass.c;h=e06a603ab19e895b88f0a1c74113318371e92426;hb=9b643e312d528f291966c1f30b0d90bf3b1d43dc;hp=677c020b110251fcac33251f5446c5eb80ede925;hpb=82d72a1b9967cff4908f22c57536c3660f794401;p=oweals%2Fu-boot.git diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 677c020b11..e06a603ab1 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -7,12 +7,10 @@ #include #include #include -#include #include #include #include #include -#include #include #include @@ -45,12 +43,12 @@ static int spi_set_speed_mode(struct udevice *bus, int speed, int mode) return 0; } -int spi_claim_bus(struct spi_slave *slave) +int dm_spi_claim_bus(struct udevice *dev) { - struct udevice *dev = slave->dev; struct udevice *bus = dev->parent; struct dm_spi_ops *ops = spi_get_ops(bus); struct dm_spi_bus *spi = dev_get_uclass_priv(bus); + struct spi_slave *slave = dev_get_parent_priv(dev); int speed; int ret; @@ -73,9 +71,8 @@ int spi_claim_bus(struct spi_slave *slave) return ops->claim_bus ? ops->claim_bus(dev) : 0; } -void spi_release_bus(struct spi_slave *slave) +void dm_spi_release_bus(struct udevice *dev) { - struct udevice *dev = slave->dev; struct udevice *bus = dev->parent; struct dm_spi_ops *ops = spi_get_ops(bus); @@ -83,10 +80,9 @@ void spi_release_bus(struct spi_slave *slave) ops->release_bus(dev); } -int spi_xfer(struct spi_slave *slave, unsigned int bitlen, - const void *dout, void *din, unsigned long flags) +int dm_spi_xfer(struct udevice *dev, unsigned int bitlen, + const void *dout, void *din, unsigned long flags) { - struct udevice *dev = slave->dev; struct udevice *bus = dev->parent; if (bus->uclass->uc_drv->id != UCLASS_SPI) @@ -95,29 +91,41 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, return spi_get_ops(bus)->xfer(dev, bitlen, dout, din, flags); } -static int spi_post_bind(struct udevice *dev) +int spi_claim_bus(struct spi_slave *slave) +{ + return dm_spi_claim_bus(slave->dev); +} + +void spi_release_bus(struct spi_slave *slave) +{ + dm_spi_release_bus(slave->dev); +} + +int spi_xfer(struct spi_slave *slave, unsigned int bitlen, + const void *dout, void *din, unsigned long flags) { - /* Scan the bus for devices */ - return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); + return dm_spi_xfer(slave->dev, bitlen, dout, din, flags); } +#if !CONFIG_IS_ENABLED(OF_PLATDATA) static int spi_child_post_bind(struct udevice *dev) { struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev); - if (dev->of_offset == -1) + if (!dev_of_valid(dev)) return 0; - return spi_slave_ofdata_to_platdata(gd->fdt_blob, dev->of_offset, plat); + return spi_slave_ofdata_to_platdata(dev, plat); } +#endif static int spi_post_probe(struct udevice *bus) { +#if !CONFIG_IS_ENABLED(OF_PLATDATA) struct dm_spi_bus *spi = dev_get_uclass_priv(bus); - spi->max_hz = fdtdec_get_int(gd->fdt_blob, bus->of_offset, - "spi-max-frequency", 0); - + spi->max_hz = dev_read_u32_default(bus, "spi-max-frequency", 0); +#endif #if defined(CONFIG_NEEDS_MANUAL_RELOC) struct dm_spi_ops *ops = spi_get_ops(bus); @@ -157,7 +165,7 @@ static int spi_child_pre_probe(struct udevice *dev) slave->max_hz = plat->max_hz; slave->mode = plat->mode; - slave->mode_rx = plat->mode_rx; + slave->wordlen = SPI_DEFAULT_WORDLEN; return 0; } @@ -263,10 +271,15 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, struct udevice **busp, struct spi_slave **devp) { struct udevice *bus, *dev; + struct dm_spi_slave_platdata *plat; bool created = false; int ret; +#if CONFIG_IS_ENABLED(OF_PLATDATA) + ret = uclass_first_device_err(UCLASS_SPI, &bus); +#else ret = uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus); +#endif if (ret) { printf("Invalid bus %d (err=%d)\n", busnum, ret); return ret; @@ -279,13 +292,14 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, * SPI flash chip - we will bind to the correct driver. */ if (ret == -ENODEV && drv_name) { - struct dm_spi_slave_platdata *plat; - debug("%s: Binding new device '%s', busnum=%d, cs=%d, driver=%s\n", __func__, dev_name, busnum, cs, drv_name); ret = device_bind_driver(bus, drv_name, dev_name, &dev); - if (ret) + if (ret) { + debug("%s: Unable to bind driver (ret=%d)\n", __func__, + ret); return ret; + } plat = dev_get_parent_platdata(dev); plat->cs = cs; plat->max_hz = speed; @@ -307,6 +321,11 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, slave->dev = dev; } + plat = dev_get_parent_platdata(dev); + if (!speed) { + speed = plat->max_hz; + mode = plat->mode; + } ret = spi_set_speed_mode(bus, speed, mode); if (ret) goto err; @@ -318,10 +337,10 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, return 0; err: - debug("%s: Error path, credted=%d, device '%s'\n", __func__, + debug("%s: Error path, created=%d, device '%s'\n", __func__, created, dev->name); if (created) { - device_remove(dev); + device_remove(dev, DM_REMOVE_NORMAL); device_unbind(dev); } @@ -353,7 +372,7 @@ struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs, int ret; ret = spi_get_bus_and_cs(busnum, cs, speed, mode, NULL, 0, &dev, - &slave); + &slave); if (ret) return NULL; @@ -362,31 +381,31 @@ struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs, void spi_free_slave(struct spi_slave *slave) { - device_remove(slave->dev); + device_remove(slave->dev, DM_REMOVE_NORMAL); slave->dev = NULL; } -int spi_slave_ofdata_to_platdata(const void *blob, int node, +int spi_slave_ofdata_to_platdata(struct udevice *dev, struct dm_spi_slave_platdata *plat) { - int mode = 0, mode_rx = 0; + int mode = 0; int value; - plat->cs = fdtdec_get_int(blob, node, "reg", -1); - plat->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", 0); - if (fdtdec_get_bool(blob, node, "spi-cpol")) + plat->cs = dev_read_u32_default(dev, "reg", -1); + plat->max_hz = dev_read_u32_default(dev, "spi-max-frequency", 0); + if (dev_read_bool(dev, "spi-cpol")) mode |= SPI_CPOL; - if (fdtdec_get_bool(blob, node, "spi-cpha")) + if (dev_read_bool(dev, "spi-cpha")) mode |= SPI_CPHA; - if (fdtdec_get_bool(blob, node, "spi-cs-high")) + if (dev_read_bool(dev, "spi-cs-high")) mode |= SPI_CS_HIGH; - if (fdtdec_get_bool(blob, node, "spi-3wire")) + if (dev_read_bool(dev, "spi-3wire")) mode |= SPI_3WIRE; - if (fdtdec_get_bool(blob, node, "spi-half-duplex")) + if (dev_read_bool(dev, "spi-half-duplex")) mode |= SPI_PREAMBLE; /* Device DUAL/QUAD mode */ - value = fdtdec_get_uint(blob, node, "spi-tx-bus-width", 1); + value = dev_read_u32_default(dev, "spi-tx-bus-width", 1); switch (value) { case 1: break; @@ -397,28 +416,26 @@ int spi_slave_ofdata_to_platdata(const void *blob, int node, mode |= SPI_TX_QUAD; break; default: - error("spi-tx-bus-width %d not supported\n", value); + warn_non_spl("spi-tx-bus-width %d not supported\n", value); break; } - plat->mode = mode; - - value = fdtdec_get_uint(blob, node, "spi-rx-bus-width", 1); + value = dev_read_u32_default(dev, "spi-rx-bus-width", 1); switch (value) { case 1: break; case 2: - mode_rx |= SPI_RX_DUAL; + mode |= SPI_RX_DUAL; break; case 4: - mode_rx |= SPI_RX_QUAD; + mode |= SPI_RX_QUAD; break; default: - error("spi-rx-bus-width %d not supported\n", value); + warn_non_spl("spi-rx-bus-width %d not supported\n", value); break; } - plat->mode_rx = mode_rx; + plat->mode = mode; return 0; } @@ -427,14 +444,18 @@ UCLASS_DRIVER(spi) = { .id = UCLASS_SPI, .name = "spi", .flags = DM_UC_FLAG_SEQ_ALIAS, - .post_bind = spi_post_bind, +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + .post_bind = dm_scan_fdt_dev, +#endif .post_probe = spi_post_probe, .child_pre_probe = spi_child_pre_probe, .per_device_auto_alloc_size = sizeof(struct dm_spi_bus), .per_child_auto_alloc_size = sizeof(struct spi_slave), .per_child_platdata_auto_alloc_size = sizeof(struct dm_spi_slave_platdata), +#if !CONFIG_IS_ENABLED(OF_PLATDATA) .child_post_bind = spi_child_post_bind, +#endif }; UCLASS_DRIVER(spi_generic) = {