i2c-designware-platdrv assumes that if the pdev has an apci-companion
it should use a dynamic adapter-nr and otherwise it will use pdev->id
as adapter-nr.
Before this commit the setting of the adapter.nr was somewhat convoluted,
in the acpi_companion case it was set from dw_i2c_acpi_configure, in the
non acpi_companion case it was set from dw_i2c_set_fifo_size based on
tx_fifo_depth not being set yet indicating that dw_i2c_acpi_configure was
not executed.
This cleans this up, directly setting the adapter-nr from
dw_i2c_plat_probe for both cases.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v2:
-Split out the code cleaning up the adapter.nr setting into a separate patch
---
drivers/i2c/busses/i2c-designware-platdrv.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index ead5e7de3e4d..30529839cbd2 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -86,7 +86,6 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev)
struct i2c_timings *t = &dev->timings;
u32 ss_ht = 0, fp_ht = 0, hs_ht = 0, fs_ht = 0;
- dev->adapter.nr = -1;
dev->tx_fifo_depth = 32;
dev->rx_fifo_depth = 32;
@@ -219,7 +218,7 @@ static void i2c_dw_configure_slave(struct dw_i2c_dev *dev)
dev->mode = DW_IC_SLAVE;
}
-static void dw_i2c_set_fifo_size(struct dw_i2c_dev *dev, int id)
+static void dw_i2c_set_fifo_size(struct dw_i2c_dev *dev)
{
u32 param, tx_fifo_depth, rx_fifo_depth;
@@ -233,7 +232,6 @@ static void dw_i2c_set_fifo_size(struct dw_i2c_dev *dev, int id)
if (!dev->tx_fifo_depth) {
dev->tx_fifo_depth = tx_fifo_depth;
dev->rx_fifo_depth = rx_fifo_depth;
- dev->adapter.nr = id;
} else if (tx_fifo_depth >= 2) {
dev->tx_fifo_depth = min_t(u32, dev->tx_fifo_depth,
tx_fifo_depth);
@@ -358,13 +356,17 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
div_u64(clk_khz * t->sda_hold_ns + 500000, 1000000);
}
- dw_i2c_set_fifo_size(dev, pdev->id);
+ dw_i2c_set_fifo_size(dev);
adap = &dev->adapter;
adap->owner = THIS_MODULE;
adap->class = I2C_CLASS_DEPRECATED;
ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev));
adap->dev.of_node = pdev->dev.of_node;
+ if (has_acpi_companion(&pdev->dev))
+ adap->nr = -1;
+ else
+ adap->nr = pdev->id;
dev_pm_set_driver_flags(&pdev->dev,
DPM_FLAG_SMART_PREPARE |
--
2.20.1
