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Diffstat (limited to 'src/soc/qualcomm/ipq40xx/spi.c')
-rw-r--r--src/soc/qualcomm/ipq40xx/spi.c93
1 files changed, 50 insertions, 43 deletions
diff --git a/src/soc/qualcomm/ipq40xx/spi.c b/src/soc/qualcomm/ipq40xx/spi.c
index cda3bea7e6..6d044b32f2 100644
--- a/src/soc/qualcomm/ipq40xx/spi.c
+++ b/src/soc/qualcomm/ipq40xx/spi.c
@@ -226,45 +226,6 @@ static struct ipq_spi_slave *to_ipq_spi(const struct spi_slave *slave)
return NULL;
}
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
-{
- struct ipq_spi_slave *ds = NULL;
- int i;
-
- if ((bus < BLSP0_SPI) || (bus > BLSP1_SPI)
- || ((bus == BLSP0_SPI) && (cs > 2))
- || ((bus == BLSP1_SPI) && (cs > 0))) {
- printk(BIOS_ERR,
- "SPI error: unsupported bus %d (Supported busses 0, 1 and 2) "
- "or chipselect\n", bus);
- return -1;
- }
-
- for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) {
- if (spi_slave_pool[i].allocated)
- continue;
- ds = spi_slave_pool + i;
-
- ds->slave.bus = slave->bus = bus;
- ds->slave.cs = slave->cs = cs;
- ds->regs = &spi_reg[bus];
-
- /*
- * TODO(vbendeb):
- * hardcoded frequency and mode - we might need to find a way
- * to configure this
- */
- ds->freq = 10000000;
- ds->mode = SPI_MODE3;
- ds->allocated = 1;
-
- return 0;
- }
-
- printk(BIOS_ERR, "SPI error: all %d pools busy\n", i);
- return -1;
-}
-
/*
* BLSP QUPn SPI Hardware Initialisation
*/
@@ -340,7 +301,7 @@ static int spi_hw_init(struct ipq_spi_slave *ds)
return SUCCESS;
}
-int spi_claim_bus(const struct spi_slave *slave)
+static int spi_ctrlr_claim_bus(const struct spi_slave *slave)
{
struct ipq_spi_slave *ds = to_ipq_spi(slave);
unsigned int ret;
@@ -352,7 +313,7 @@ int spi_claim_bus(const struct spi_slave *slave)
return SUCCESS;
}
-void spi_release_bus(const struct spi_slave *slave)
+static void spi_ctrlr_release_bus(const struct spi_slave *slave)
{
struct ipq_spi_slave *ds = to_ipq_spi(slave);
@@ -653,8 +614,8 @@ static int blsp_spi_write(struct ipq_spi_slave *ds, u8 *cmd_buffer,
* This function is invoked with either tx_buf or rx_buf.
* Calling this function with both null does a chip select change.
*/
-int spi_xfer(const struct spi_slave *slave, const void *dout,
- size_t out_bytes, void *din, size_t in_bytes)
+static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout,
+ size_t out_bytes, void *din, size_t in_bytes)
{
struct ipq_spi_slave *ds = to_ipq_spi(slave);
u8 *txp = (u8 *)dout;
@@ -690,3 +651,49 @@ out:
return ret;
}
+
+static const struct spi_ctrlr spi_ctrlr = {
+ .claim_bus = spi_ctrlr_claim_bus,
+ .release_bus = spi_ctrlr_release_bus,
+ .xfer = spi_ctrlr_xfer,
+};
+
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+{
+ struct ipq_spi_slave *ds = NULL;
+ int i;
+
+ if ((bus < BLSP0_SPI) || (bus > BLSP1_SPI)
+ || ((bus == BLSP0_SPI) && (cs > 2))
+ || ((bus == BLSP1_SPI) && (cs > 0))) {
+ printk(BIOS_ERR,
+ "SPI error: unsupported bus %d (Supported busses 0, 1 and 2) "
+ "or chipselect\n", bus);
+ return -1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) {
+ if (spi_slave_pool[i].allocated)
+ continue;
+ ds = spi_slave_pool + i;
+
+ ds->slave.bus = slave->bus = bus;
+ ds->slave.cs = slave->cs = cs;
+ slave->ctrlr = &spi_ctrlr;
+ ds->regs = &spi_reg[bus];
+
+ /*
+ * TODO(vbendeb):
+ * hardcoded frequency and mode - we might need to find a way
+ * to configure this
+ */
+ ds->freq = 10000000;
+ ds->mode = SPI_MODE3;
+ ds->allocated = 1;
+
+ return 0;
+ }
+
+ printk(BIOS_ERR, "SPI error: all %d pools busy\n", i);
+ return -1;
+}