[PATCH 04/11] i2c-mpc: Add MPC5121 I2C bus support
From: Anatolij Gustschin <agust@denx.de>
Date: 2010-01-19 20:24:23
Also in:
linux-i2c
Subsystem:
freescale mpc i2c driver, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Chris Packham, Andi Shyti, Linus Torvalds
From: Piotr Ziecik <redacted>
- Update Kconfig for i2c-mpc driver.
- Enable I2C interrupts on MPC5121.
Signed-off-by: Piotr Ziecik <redacted>
Signed-off-by: Wolfgang Denk <redacted>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: <redacted>
Cc: Grant Likely <redacted>
Cc: John Rigby <redacted>
---
drivers/i2c/busses/Kconfig | 9 +++++----
drivers/i2c/busses/i2c-mpc.c | 23 +++++++++++++++++++++++
2 files changed, 28 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 5f318ce..f481f30 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig@@ -418,13 +418,14 @@ config I2C_IXP2000 instead. config I2C_MPC - tristate "MPC107/824x/85xx/52xx/86xx" + tristate "MPC107/824x/85xx/512x/52xx/86xx" depends on PPC32 help If you say yes to this option, support will be included for the - built-in I2C interface on the MPC107/Tsi107/MPC8240/MPC8245 and - MPC85xx/MPC8641 family processors. The driver may also work on 52xx - family processors, though interrupts are known not to work. + built-in I2C interface on the MPC107/Tsi107/MPC8240/MPC8245, + MPC85xx/MPC8641 and MPC512x family processors. The driver may + also work on 52xx family processors, though interrupts are known + not to work. This driver can also be built as a module. If so, the module will be called i2c-mpc.
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index f627001..84eeb25 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c@@ -540,6 +540,29 @@ static int __devinit fsl_i2c_probe(struct of_device *op, } } + if (of_device_is_compatible(op->node, "fsl,mpc5121-i2c")) { + struct device_node *np; + void __iomem *i2cctl; + + /* Enable I2C interrupts */ + np = of_find_compatible_node(NULL, NULL, + "fsl,mpc5121-i2c-ctrl"); + if (np) { + i2cctl = of_iomap(np, 0); + if (i2cctl) { + /* + * Set interrupt enable bits: + * - I2C-0: bit 24, + * - I2C-1: bit 26, + * - I2C-2: bit 28. + */ + out_be32(i2cctl, 0x15000000); + iounmap(i2cctl); + } + of_node_put(np); + } + } + dev_set_drvdata(&op->dev, i2c); i2c->adap = mpc_ops;
--
1.5.6.3