#include <spi.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
-#include <dm/root.h>
#include <dm/lists.h>
#include <dm/util.h>
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 = bus->uclass_priv;
+ struct dm_spi_bus *spi = dev_get_uclass_priv(bus);
+ struct spi_slave *slave = dev_get_parent_priv(dev);
int speed;
int ret;
}
if (!speed)
speed = 100000;
- ret = spi_set_speed_mode(bus, speed, slave->mode);
- if (ret)
- return ret;
+ if (speed != slave->speed) {
+ ret = spi_set_speed_mode(bus, speed, slave->mode);
+ if (ret)
+ return ret;
+ slave->speed = speed;
+ }
- return ops->claim_bus ? ops->claim_bus(bus) : 0;
+ 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);
if (ops->release_bus)
- ops->release_bus(bus);
+ 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)
return spi_get_ops(bus)->xfer(dev, bitlen, dout, din, flags);
}
-int spi_post_bind(struct udevice *dev)
+int spi_claim_bus(struct spi_slave *slave)
{
- /* Scan the bus for devices */
- return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
+ return dm_spi_claim_bus(slave->dev);
}
-int spi_post_probe(struct udevice *dev)
+void spi_release_bus(struct spi_slave *slave)
{
- struct dm_spi_bus *spi = dev->uclass_priv;
+ dm_spi_release_bus(slave->dev);
+}
- spi->max_hz = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
+ const void *dout, void *din, unsigned long flags)
+{
+ return dm_spi_xfer(slave->dev, bitlen, dout, din, flags);
+}
+
+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)
+ return 0;
+
+ return spi_slave_ofdata_to_platdata(gd->fdt_blob, dev->of_offset, plat);
+}
+
+static int spi_post_probe(struct udevice *bus)
+{
+ 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);
+#if defined(CONFIG_NEEDS_MANUAL_RELOC)
+ struct dm_spi_ops *ops = spi_get_ops(bus);
+
+
+ if (ops->claim_bus)
+ ops->claim_bus += gd->reloc_off;
+ if (ops->release_bus)
+ ops->release_bus += gd->reloc_off;
+ if (ops->set_wordlen)
+ ops->set_wordlen += gd->reloc_off;
+ if (ops->xfer)
+ ops->xfer += gd->reloc_off;
+ if (ops->set_speed)
+ ops->set_speed += gd->reloc_off;
+ if (ops->set_mode)
+ ops->set_mode += gd->reloc_off;
+ if (ops->cs_info)
+ ops->cs_info += gd->reloc_off;
+#endif
+
+ return 0;
+}
+
+static int spi_child_pre_probe(struct udevice *dev)
+{
+ struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
+ struct spi_slave *slave = dev_get_parent_priv(dev);
+
+ /*
+ * This is needed because we pass struct spi_slave around the place
+ * instead slave->dev (a struct udevice). So we have to have some
+ * way to access the slave udevice given struct spi_slave. Once we
+ * change the SPI API to use udevice instead of spi_slave, we can
+ * drop this.
+ */
+ slave->dev = dev;
+
+ slave->max_hz = plat->max_hz;
+ slave->mode = plat->mode;
+ slave->mode_rx = plat->mode_rx;
+ slave->wordlen = SPI_DEFAULT_WORDLEN;
+
return 0;
}
int spi_chip_select(struct udevice *dev)
{
- struct spi_slave *slave = dev_get_parentdata(dev);
+ struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
- return slave ? slave->cs : -ENOENT;
+ return plat ? plat->cs : -ENOENT;
}
int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp)
for (device_find_first_child(bus, &dev); dev;
device_find_next_child(&dev)) {
- struct spi_slave store;
- struct spi_slave *slave = dev_get_parentdata(dev);
+ struct dm_spi_slave_platdata *plat;
- if (!slave) {
- slave = &store;
- spi_ofdata_to_platdata(gd->fdt_blob, dev->of_offset,
- slave);
- }
- debug("%s: slave=%p, cs=%d\n", __func__, slave,
- slave ? slave->cs : -1);
- if (slave && slave->cs == cs) {
+ plat = dev_get_parent_platdata(dev);
+ debug("%s: plat=%p, cs=%d\n", __func__, plat, plat->cs);
+ if (plat->cs == cs) {
*devp = dev;
return 0;
}
struct udevice **busp, struct spi_slave **devp)
{
struct udevice *bus, *dev;
- struct spi_slave *slave;
+ struct dm_spi_slave_platdata *plat;
bool created = false;
int ret;
ret = device_bind_driver(bus, drv_name, dev_name, &dev);
if (ret)
return ret;
+ plat = dev_get_parent_platdata(dev);
+ plat->cs = cs;
+ plat->max_hz = speed;
+ plat->mode = mode;
created = true;
} else if (ret) {
printf("Invalid chip select %d:%d (err=%d)\n", busnum, cs,
}
if (!device_active(dev)) {
- slave = (struct spi_slave *)calloc(1,
- sizeof(struct spi_slave));
- if (!slave) {
- ret = -ENOMEM;
- goto err;
- }
+ struct spi_slave *slave;
- ret = spi_ofdata_to_platdata(gd->fdt_blob, dev->of_offset,
- slave);
+ ret = device_probe(dev);
if (ret)
goto err;
- slave->cs = cs;
+ slave = dev_get_parent_priv(dev);
slave->dev = dev;
- ret = device_probe_child(dev, slave);
- free(slave);
- if (ret)
- goto err;
}
+ 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;
*busp = bus;
- *devp = dev_get_parentdata(dev);
+ *devp = dev_get_parent_priv(dev);
debug("%s: bus=%p, slave=%p\n", __func__, bus, *devp);
return 0;
err:
+ debug("%s: Error path, created=%d, device '%s'\n", __func__,
+ created, dev->name);
if (created) {
device_remove(dev);
device_unbind(dev);
ret = device_get_child_by_of_offset(bus, node, &dev);
if (ret)
return NULL;
- return dev_get_parentdata(dev);
+ return dev_get_parent_priv(dev);
}
/* Compatibility function - to be removed */
slave->dev = NULL;
}
-int spi_ofdata_to_platdata(const void *blob, int node,
- struct spi_slave *spi)
+int spi_slave_ofdata_to_platdata(const void *blob, int node,
+ struct dm_spi_slave_platdata *plat)
{
- int mode = 0;
+ int mode = 0, mode_rx = 0;
+ int value;
- spi->cs = fdtdec_get_int(blob, node, "reg", -1);
- spi->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", 0);
+ 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"))
mode |= SPI_CPOL;
if (fdtdec_get_bool(blob, node, "spi-cpha"))
mode |= SPI_CPHA;
if (fdtdec_get_bool(blob, node, "spi-cs-high"))
mode |= SPI_CS_HIGH;
+ if (fdtdec_get_bool(blob, node, "spi-3wire"))
+ mode |= SPI_3WIRE;
if (fdtdec_get_bool(blob, node, "spi-half-duplex"))
mode |= SPI_PREAMBLE;
- spi->mode = mode;
+
+ /* Device DUAL/QUAD mode */
+ value = fdtdec_get_uint(blob, node, "spi-tx-bus-width", 1);
+ switch (value) {
+ case 1:
+ break;
+ case 2:
+ mode |= SPI_TX_DUAL;
+ break;
+ case 4:
+ mode |= SPI_TX_QUAD;
+ break;
+ default:
+ error("spi-tx-bus-width %d not supported\n", value);
+ break;
+ }
+
+ plat->mode = mode;
+
+ value = fdtdec_get_uint(blob, node, "spi-rx-bus-width", 1);
+ switch (value) {
+ case 1:
+ break;
+ case 2:
+ mode_rx |= SPI_RX_DUAL;
+ break;
+ case 4:
+ mode_rx |= SPI_RX_QUAD;
+ break;
+ default:
+ error("spi-rx-bus-width %d not supported\n", value);
+ break;
+ }
+
+ plat->mode_rx = mode_rx;
return 0;
}
UCLASS_DRIVER(spi) = {
.id = UCLASS_SPI,
.name = "spi",
- .post_bind = spi_post_bind,
+ .flags = DM_UC_FLAG_SEQ_ALIAS,
+ .post_bind = dm_scan_fdt_dev,
.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),
+ .child_post_bind = spi_child_post_bind,
};
UCLASS_DRIVER(spi_generic) = {
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