[v5,1/7] i3c: add addr and lvr to i2c_dev_desc structure

Commit Message

Przemysław Gaj June 22, 2019, 8:54 p.m. UTC

I need to store address and lvr value for I2C devices without static definition
in DT. This allows secondary master to transmit DEFSLVS command properly.

Main changes between v4 and v5:
- Change in defslvs to use addr and lvr from i2c_dev_desc structure
- Change in CDNS and DW drivers to use addr and lvr from i2c_dev_desc structure

Signed-off-by: Przemyslaw Gaj <[e-mail]>
---
 drivers/i3c/master.c                 | 10 ++++++----
 drivers/i3c/master/dw-i3c-master.c   |  4 ++--
 drivers/i3c/master/i3c-master-cdns.c |  4 ++--
 include/linux/i3c/master.h           |  5 +++++
 4 files changed, 15 insertions(+), 8 deletions(-)

Patch

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 2f9a54d..0f7c31e 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -620,6 +620,8 @@  i3c_master_alloc_i2c_dev(struct i3c_master_controller *master,
 
 	dev->common.master = master;
 	dev->boardinfo = boardinfo;
+	dev->addr = boardinfo->base.addr;
+	dev->lvr = boardinfo->lvr;
 
 	return dev;
 }
@@ -939,8 +941,8 @@  int i3c_master_defslvs_locked(struct i3c_master_controller *master)
 
 	desc = defslvs->slaves;
 	i3c_bus_for_each_i2cdev(bus, i2cdev) {
-		desc->lvr = i2cdev->boardinfo->lvr;
-		desc->static_addr = i2cdev->boardinfo->base.addr << 1;
+		desc->lvr = i2cdev->lvr;
+		desc->static_addr = i2cdev->addr << 1;
 		desc++;
 	}
 
@@ -1607,8 +1609,8 @@  static void i3c_master_detach_free_devs(struct i3c_master_controller *master)
 				 common.node) {
 		i3c_master_detach_i2c_dev(i2cdev);
 		i3c_bus_set_addr_slot_status(&master->bus,
-					i2cdev->boardinfo->base.addr,
-					I3C_ADDR_SLOT_FREE);
+					     i2cdev->addr,
+					     I3C_ADDR_SLOT_FREE);
 		i3c_master_free_i2c_dev(i2cdev);
 	}
 }
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 9934a12..22ac305 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -1041,12 +1041,12 @@  static int dw_i3c_master_attach_i2c_dev(struct i2c_dev_desc *dev)
 		return -ENOMEM;
 
 	data->index = pos;
-	master->addrs[pos] = dev->boardinfo->base.addr;
+	master->addrs[pos] = dev->addr;
 	master->free_pos &= ~BIT(pos);
 	i2c_dev_set_master_data(dev, data);
 
 	writel(DEV_ADDR_TABLE_LEGACY_I2C_DEV |
-	       DEV_ADDR_TABLE_STATIC_ADDR(dev->boardinfo->base.addr),
+	       DEV_ADDR_TABLE_STATIC_ADDR(dev->addr),
 	       master->regs +
 	       DEV_ADDR_TABLE_LOC(master->datstartaddr, data->index));
 
diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c
index 237f24a..5aee315 100644
--- a/drivers/i3c/master/i3c-master-cdns.c
+++ b/drivers/i3c/master/i3c-master-cdns.c
@@ -1005,9 +1005,9 @@  static int cdns_i3c_master_attach_i2c_dev(struct i2c_dev_desc *dev)
 	master->free_rr_slots &= ~BIT(slot);
 	i2c_dev_set_master_data(dev, data);
 
-	writel(prepare_rr0_dev_address(dev->boardinfo->base.addr),
+	writel(prepare_rr0_dev_address(dev->addr),
 	       master->regs + DEV_ID_RR0(data->id));
-	writel(dev->boardinfo->lvr, master->regs + DEV_ID_RR2(data->id));
+	writel(dev->lvr, master->regs + DEV_ID_RR2(data->id));
 	writel(readl(master->regs + DEVS_CTRL) |
 	       DEVS_CTRL_DEV_ACTIVE(data->id),
 	       master->regs + DEVS_CTRL);
diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index d480ab7..42bb215 100644
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -71,6 +71,9 @@  struct i2c_dev_boardinfo {
  * @common: common part of the I2C device descriptor
  * @boardinfo: pointer to the boardinfo attached to this I2C device
  * @dev: I2C device object registered to the I2C framework
+ * @addr: I2C device address
+ * @lvr: LVR (Legacy Virtual Register) needed by the I3C core to know about
+ *	 the I2C device limitations
  *
  * Each I2C device connected on the bus will have an i2c_dev_desc.
  * This object is created by the core and later attached to the controller
@@ -84,6 +87,8 @@  struct i2c_dev_desc {
 	struct i3c_i2c_dev_desc common;
 	const struct i2c_dev_boardinfo *boardinfo;
 	struct i2c_client *dev;
+	u16 addr;
+	u8 lvr;
 };
 
 /**