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-rw-r--r--drivers/i2c/busses/Kconfig2
-rw-r--r--drivers/i2c/busses/i2c-davinci.c2
-rw-r--r--drivers/i2c/busses/i2c-imx.c2
-rw-r--r--drivers/i2c/busses/i2c-iop3xx.c121
-rw-r--r--drivers/i2c/busses/i2c-mpc.c12
-rw-r--r--drivers/i2c/busses/i2c-nuc900.c2
-rw-r--r--drivers/i2c/busses/i2c-omap.c3
-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c2
-rw-r--r--drivers/i2c/busses/i2c-tegra.c130
9 files changed, 166 insertions, 110 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 970a1612e795..42d9fdd63de0 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -551,7 +551,7 @@ config I2C_PMCMSP
config I2C_PNX
tristate "I2C bus support for Philips PNX and NXP LPC targets"
- depends on ARCH_PNX4008 || ARCH_LPC32XX
+ depends on ARCH_LPC32XX
help
This driver supports the Philips IP3204 I2C IP block master and/or
slave controller
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 79b4bcb3b85c..79a2542d8c41 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -40,7 +40,7 @@
#include <linux/gpio.h>
#include <mach/hardware.h>
-#include <mach/i2c.h>
+#include <linux/platform_data/i2c-davinci.h>
/* ----- global defines ----------------------------------------------- */
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 0722f869465c..b7907ba7448a 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -54,7 +54,7 @@
#include <linux/pinctrl/consumer.h>
#include <mach/hardware.h>
-#include <mach/i2c.h>
+#include <linux/platform_data/i2c-imx.h>
/** Defines ********************************************************************
*******************************************************************************/
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 93f147a96b62..2f99613fd677 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -4,13 +4,13 @@
/* Copyright (C) 2003 Peter Milne, D-TACQ Solutions Ltd
* <Peter dot Milne at D hyphen TACQ dot com>
*
- * With acknowledgements to i2c-algo-ibm_ocp.c by
+ * With acknowledgements to i2c-algo-ibm_ocp.c by
* Ian DaSilva, MontaVista Software, Inc. idasilva@mvista.com
*
* And i2c-algo-pcf.c, which was created by Simon G. Vogl and Hans Berglund:
*
* Copyright (C) 1995-1997 Simon G. Vogl, 1998-2000 Hans Berglund
- *
+ *
* And which acknowledged Kyösti Mälkki <kmalkki@cc.hut.fi>,
* Frodo Looijaard <frodol@dds.nl>, Martin Bailey<mbailey@littlefeet-inc.com>
*
@@ -39,14 +39,15 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/io.h>
+#include <linux/gpio.h>
#include "i2c-iop3xx.h"
/* global unit counter */
static int i2c_id;
-static inline unsigned char
-iic_cook_addr(struct i2c_msg *msg)
+static inline unsigned char
+iic_cook_addr(struct i2c_msg *msg)
{
unsigned char addr;
@@ -55,38 +56,38 @@ iic_cook_addr(struct i2c_msg *msg)
if (msg->flags & I2C_M_RD)
addr |= 1;
- return addr;
+ return addr;
}
-static void
+static void
iop3xx_i2c_reset(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
/* Follows devman 9.3 */
__raw_writel(IOP3XX_ICR_UNIT_RESET, iop3xx_adap->ioaddr + CR_OFFSET);
__raw_writel(IOP3XX_ISR_CLEARBITS, iop3xx_adap->ioaddr + SR_OFFSET);
__raw_writel(0, iop3xx_adap->ioaddr + CR_OFFSET);
-}
+}
-static void
+static void
iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
u32 cr = IOP3XX_ICR_GCD | IOP3XX_ICR_SCLEN | IOP3XX_ICR_UE;
- /*
+ /*
* Every time unit enable is asserted, GPOD needs to be cleared
* on IOP3XX to avoid data corruption on the bus.
*/
#if defined(CONFIG_ARCH_IOP32X) || defined(CONFIG_ARCH_IOP33X)
if (iop3xx_adap->id == 0) {
- gpio_line_set(IOP3XX_GPIO_LINE(7), GPIO_LOW);
- gpio_line_set(IOP3XX_GPIO_LINE(6), GPIO_LOW);
+ gpio_set_value(7, 0);
+ gpio_set_value(6, 0);
} else {
- gpio_line_set(IOP3XX_GPIO_LINE(5), GPIO_LOW);
- gpio_line_set(IOP3XX_GPIO_LINE(4), GPIO_LOW);
+ gpio_set_value(5, 0);
+ gpio_set_value(4, 0);
}
#endif
/* NB SR bits not same position as CR IE bits :-( */
- iop3xx_adap->SR_enabled =
+ iop3xx_adap->SR_enabled =
IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD |
IOP3XX_ISR_RXFULL | IOP3XX_ISR_TXEMPTY;
@@ -96,23 +97,23 @@ iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}
-static void
+static void
iop3xx_i2c_transaction_cleanup(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
-
- cr &= ~(IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE |
+
+ cr &= ~(IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE |
IOP3XX_ICR_MSTOP | IOP3XX_ICR_SCLEN);
__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}
-/*
- * NB: the handler has to clear the source of the interrupt!
+/*
+ * NB: the handler has to clear the source of the interrupt!
* Then it passes the SR flags of interest to BH via adap data
*/
-static irqreturn_t
-iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
+static irqreturn_t
+iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = dev_id;
u32 sr = __raw_readl(iop3xx_adap->ioaddr + SR_OFFSET);
@@ -126,7 +127,7 @@ iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
}
/* check all error conditions, clear them , report most important */
-static int
+static int
iop3xx_i2c_error(u32 sr)
{
int rc = 0;
@@ -135,12 +136,12 @@ iop3xx_i2c_error(u32 sr)
if ( !rc ) rc = -I2C_ERR_BERR;
}
if ((sr & IOP3XX_ISR_ALD)) {
- if ( !rc ) rc = -I2C_ERR_ALD;
+ if ( !rc ) rc = -I2C_ERR_ALD;
}
- return rc;
+ return rc;
}
-static inline u32
+static inline u32
iop3xx_i2c_get_srstat(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
unsigned long flags;
@@ -161,8 +162,8 @@ iop3xx_i2c_get_srstat(struct i2c_algo_iop3xx_data *iop3xx_adap)
typedef int (* compare_func)(unsigned test, unsigned mask);
/* returns 1 on correct comparison */
-static int
-iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
+static int
+iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
unsigned flags, unsigned* status,
compare_func compare)
{
@@ -192,47 +193,47 @@ iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
}
/*
- * Concrete compare_funcs
+ * Concrete compare_funcs
*/
-static int
+static int
all_bits_clear(unsigned test, unsigned mask)
{
return (test & mask) == 0;
}
-static int
+static int
any_bits_set(unsigned test, unsigned mask)
{
return (test & mask) != 0;
}
-static int
+static int
iop3xx_i2c_wait_tx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
- iop3xx_adap,
+ return iop3xx_i2c_wait_event(
+ iop3xx_adap,
IOP3XX_ISR_TXEMPTY | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
status, any_bits_set);
}
-static int
+static int
iop3xx_i2c_wait_rx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
- iop3xx_adap,
+ return iop3xx_i2c_wait_event(
+ iop3xx_adap,
IOP3XX_ISR_RXFULL | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
status, any_bits_set);
}
-static int
+static int
iop3xx_i2c_wait_idle(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
+ return iop3xx_i2c_wait_event(
iop3xx_adap, IOP3XX_ISR_UNITBUSY, status, all_bits_clear);
}
-static int
-iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
+static int
+iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
struct i2c_msg* msg)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -247,7 +248,7 @@ iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
}
__raw_writel(iic_cook_addr(msg), iop3xx_adap->ioaddr + DBR_OFFSET);
-
+
cr &= ~(IOP3XX_ICR_MSTOP | IOP3XX_ICR_NACK);
cr |= IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE;
@@ -257,8 +258,8 @@ iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
return rc;
}
-static int
-iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
+static int
+iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
int stop)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -277,10 +278,10 @@ iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
rc = iop3xx_i2c_wait_tx_done(iop3xx_adap, &status);
return rc;
-}
+}
-static int
-iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
+static int
+iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
int stop)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -304,19 +305,19 @@ iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
return rc;
}
-static int
+static int
iop3xx_i2c_writebytes(struct i2c_adapter *i2c_adap, const char *buf, int count)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
int ii;
int rc = 0;
- for (ii = 0; rc == 0 && ii != count; ++ii)
+ for (ii = 0; rc == 0 && ii != count; ++ii)
rc = iop3xx_i2c_write_byte(iop3xx_adap, buf[ii], ii==count-1);
return rc;
}
-static int
+static int
iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
@@ -325,7 +326,7 @@ iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
for (ii = 0; rc == 0 && ii != count; ++ii)
rc = iop3xx_i2c_read_byte(iop3xx_adap, &buf[ii], ii==count-1);
-
+
return rc;
}
@@ -336,8 +337,8 @@ iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
* Each transfer (i.e. a read or a write) is separated by a repeated start
* condition.
*/
-static int
-iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
+static int
+iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
int rc;
@@ -357,8 +358,8 @@ iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
/*
* master_xfer() - main read/write entry
*/
-static int
-iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
+static int
+iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
int num)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
@@ -375,14 +376,14 @@ iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
}
iop3xx_i2c_transaction_cleanup(iop3xx_adap);
-
+
if(ret)
return ret;
- return im;
+ return im;
}
-static u32
+static u32
iop3xx_i2c_func(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
@@ -393,11 +394,11 @@ static const struct i2c_algorithm iop3xx_i2c_algo = {
.functionality = iop3xx_i2c_func,
};
-static int
+static int
iop3xx_i2c_remove(struct platform_device *pdev)
{
struct i2c_adapter *padapter = platform_get_drvdata(pdev);
- struct i2c_algo_iop3xx_data *adapter_data =
+ struct i2c_algo_iop3xx_data *adapter_data =
(struct i2c_algo_iop3xx_data *)padapter->algo_data;
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
unsigned long cr = __raw_readl(adapter_data->ioaddr + CR_OFFSET);
@@ -419,7 +420,7 @@ iop3xx_i2c_remove(struct platform_device *pdev)
return 0;
}
-static int
+static int
iop3xx_i2c_probe(struct platform_device *pdev)
{
struct resource *res;
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index b76731edbf10..57f7703ce2e8 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -647,7 +647,7 @@ static int __devinit fsl_i2c_probe(struct platform_device *op)
}
if (match->data) {
- struct mpc_i2c_data *data = match->data;
+ const struct mpc_i2c_data *data = match->data;
data->setup(op->dev.of_node, i2c, clock, data->prescaler);
} else {
/* Backwards compatibility */
@@ -730,24 +730,24 @@ static int mpc_i2c_resume(struct device *dev)
SIMPLE_DEV_PM_OPS(mpc_i2c_pm_ops, mpc_i2c_suspend, mpc_i2c_resume);
#endif
-static struct mpc_i2c_data mpc_i2c_data_512x __devinitdata = {
+static const struct mpc_i2c_data mpc_i2c_data_512x __devinitdata = {
.setup = mpc_i2c_setup_512x,
};
-static struct mpc_i2c_data mpc_i2c_data_52xx __devinitdata = {
+static const struct mpc_i2c_data mpc_i2c_data_52xx __devinitdata = {
.setup = mpc_i2c_setup_52xx,
};
-static struct mpc_i2c_data mpc_i2c_data_8313 __devinitdata = {
+static const struct mpc_i2c_data mpc_i2c_data_8313 __devinitdata = {
.setup = mpc_i2c_setup_8xxx,
};
-static struct mpc_i2c_data mpc_i2c_data_8543 __devinitdata = {
+static const struct mpc_i2c_data mpc_i2c_data_8543 __devinitdata = {
.setup = mpc_i2c_setup_8xxx,
.prescaler = 2,
};
-static struct mpc_i2c_data mpc_i2c_data_8544 __devinitdata = {
+static const struct mpc_i2c_data mpc_i2c_data_8544 __devinitdata = {
.setup = mpc_i2c_setup_8xxx,
.prescaler = 3,
};
diff --git a/drivers/i2c/busses/i2c-nuc900.c b/drivers/i2c/busses/i2c-nuc900.c
index a26dfb8cd586..f41502ef3f55 100644
--- a/drivers/i2c/busses/i2c-nuc900.c
+++ b/drivers/i2c/busses/i2c-nuc900.c
@@ -29,7 +29,7 @@
#include <linux/io.h>
#include <mach/mfp.h>
-#include <mach/i2c.h>
+#include <linux/platform_data/i2c-nuc900.h>
/* nuc900 i2c registers offset */
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 5d19a49803c1..a0e49f6aaf96 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -944,7 +944,8 @@ omap_i2c_probe(struct platform_device *pdev)
struct omap_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem, *irq, *ioarea;
- struct omap_i2c_bus_platform_data *pdata = pdev->dev.platform_data;
+ const struct omap_i2c_bus_platform_data *pdata =
+ pdev->dev.platform_data;
struct device_node *node = pdev->dev.of_node;
const struct of_device_id *match;
irq_handler_t isr;
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 5ae3b0236bd3..4d07dea9bca9 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -42,7 +42,7 @@
#include <asm/irq.h>
#include <plat/regs-iic.h>
-#include <plat/iic.h>
+#include <linux/platform_data/i2c-s3c2410.h>
/* Treat S3C2410 as baseline hardware, anything else is supported via quirks */
#define QUIRK_S3C2440 (1 << 0)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 9a08c57bc936..f981ac4e6783 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/i2c-tegra.h>
#include <linux/of_i2c.h>
+#include <linux/of_device.h>
#include <linux/module.h>
#include <asm/unaligned.h>
@@ -114,11 +115,21 @@ enum msg_end_type {
};
/**
+ * struct tegra_i2c_hw_feature : Different HW support on Tegra
+ * @has_continue_xfer_support: Continue transfer supports.
+ */
+
+struct tegra_i2c_hw_feature {
+ bool has_continue_xfer_support;
+};
+
+/**
* struct tegra_i2c_dev - per device i2c context
* @dev: device reference for power management
+ * @hw: Tegra i2c hw feature.
* @adapter: core i2c layer adapter information
- * @clk: clock reference for i2c controller
- * @i2c_clk: clock reference for i2c bus
+ * @div_clk: clock reference for div clock of i2c controller.
+ * @fast_clk: clock reference for fast clock of i2c controller.
* @base: ioremapped registers cookie
* @cont_id: i2c controller id, used for for packet header
* @irq: irq number of transfer complete interrupt
@@ -133,9 +144,10 @@ enum msg_end_type {
*/
struct tegra_i2c_dev {
struct device *dev;
+ const struct tegra_i2c_hw_feature *hw;
struct i2c_adapter adapter;
- struct clk *clk;
- struct clk *i2c_clk;
+ struct clk *div_clk;
+ struct clk *fast_clk;
void __iomem *base;
int cont_id;
int irq;
@@ -351,16 +363,40 @@ static void tegra_dvc_init(struct tegra_i2c_dev *i2c_dev)
dvc_writel(i2c_dev, val, DVC_CTRL_REG1);
}
+static inline int tegra_i2c_clock_enable(struct tegra_i2c_dev *i2c_dev)
+{
+ int ret;
+ ret = clk_prepare_enable(i2c_dev->fast_clk);
+ if (ret < 0) {
+ dev_err(i2c_dev->dev,
+ "Enabling fast clk failed, err %d\n", ret);
+ return ret;
+ }
+ ret = clk_prepare_enable(i2c_dev->div_clk);
+ if (ret < 0) {
+ dev_err(i2c_dev->dev,
+ "Enabling div clk failed, err %d\n", ret);
+ clk_disable_unprepare(i2c_dev->fast_clk);
+ }
+ return ret;
+}
+
+static inline void tegra_i2c_clock_disable(struct tegra_i2c_dev *i2c_dev)
+{
+ clk_disable_unprepare(i2c_dev->div_clk);
+ clk_disable_unprepare(i2c_dev->fast_clk);
+}
+
static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
{
u32 val;
int err = 0;
- clk_prepare_enable(i2c_dev->clk);
+ tegra_i2c_clock_enable(i2c_dev);
- tegra_periph_reset_assert(i2c_dev->clk);
+ tegra_periph_reset_assert(i2c_dev->div_clk);
udelay(2);
- tegra_periph_reset_deassert(i2c_dev->clk);
+ tegra_periph_reset_deassert(i2c_dev->div_clk);
if (i2c_dev->is_dvc)
tegra_dvc_init(i2c_dev);
@@ -369,7 +405,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
(0x2 << I2C_CNFG_DEBOUNCE_CNT_SHIFT);
i2c_writel(i2c_dev, val, I2C_CNFG);
i2c_writel(i2c_dev, 0, I2C_INT_MASK);
- clk_set_rate(i2c_dev->clk, i2c_dev->bus_clk_rate * 8);
+ clk_set_rate(i2c_dev->div_clk, i2c_dev->bus_clk_rate * 8);
if (!i2c_dev->is_dvc) {
u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
@@ -387,7 +423,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
if (tegra_i2c_flush_fifos(i2c_dev))
err = -ETIMEDOUT;
- clk_disable_unprepare(i2c_dev->clk);
+ tegra_i2c_clock_disable(i2c_dev);
if (i2c_dev->irq_disabled) {
i2c_dev->irq_disabled = 0;
@@ -563,7 +599,7 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
if (i2c_dev->is_suspended)
return -EBUSY;
- clk_prepare_enable(i2c_dev->clk);
+ tegra_i2c_clock_enable(i2c_dev);
for (i = 0; i < num; i++) {
enum msg_end_type end_type = MSG_END_STOP;
if (i < (num - 1)) {
@@ -576,14 +612,19 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
if (ret)
break;
}
- clk_disable_unprepare(i2c_dev->clk);
+ tegra_i2c_clock_disable(i2c_dev);
return ret ?: i;
}
static u32 tegra_i2c_func(struct i2c_adapter *adap)
{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
- I2C_FUNC_PROTOCOL_MANGLING | I2C_FUNC_NOSTART;
+ struct tegra_i2c_dev *i2c_dev = i2c_get_adapdata(adap);
+ u32 ret = I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
+ I2C_FUNC_PROTOCOL_MANGLING;
+
+ if (i2c_dev->hw->has_continue_xfer_support)
+ ret |= I2C_FUNC_NOSTART;
+ return ret;
}
static const struct i2c_algorithm tegra_i2c_algo = {
@@ -591,13 +632,32 @@ static const struct i2c_algorithm tegra_i2c_algo = {
.functionality = tegra_i2c_func,
};
+static const struct tegra_i2c_hw_feature tegra20_i2c_hw = {
+ .has_continue_xfer_support = false,
+};
+
+static const struct tegra_i2c_hw_feature tegra30_i2c_hw = {
+ .has_continue_xfer_support = true,
+};
+
+#if defined(CONFIG_OF)
+/* Match table for of_platform binding */
+static const struct of_device_id tegra_i2c_of_match[] __devinitconst = {
+ { .compatible = "nvidia,tegra30-i2c", .data = &tegra30_i2c_hw, },
+ { .compatible = "nvidia,tegra20-i2c", .data = &tegra20_i2c_hw, },
+ { .compatible = "nvidia,tegra20-i2c-dvc", .data = &tegra20_i2c_hw, },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
+#endif
+
static int __devinit tegra_i2c_probe(struct platform_device *pdev)
{
struct tegra_i2c_dev *i2c_dev;
struct tegra_i2c_platform_data *pdata = pdev->dev.platform_data;
struct resource *res;
- struct clk *clk;
- struct clk *i2c_clk;
+ struct clk *div_clk;
+ struct clk *fast_clk;
const unsigned int *prop;
void __iomem *base;
int irq;
@@ -622,16 +682,16 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
}
irq = res->start;
- clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(clk)) {
+ div_clk = devm_clk_get(&pdev->dev, "div-clk");
+ if (IS_ERR(div_clk)) {
dev_err(&pdev->dev, "missing controller clock");
- return PTR_ERR(clk);
+ return PTR_ERR(div_clk);
}
- i2c_clk = devm_clk_get(&pdev->dev, "i2c");
- if (IS_ERR(i2c_clk)) {
+ fast_clk = devm_clk_get(&pdev->dev, "fast-clk");
+ if (IS_ERR(fast_clk)) {
dev_err(&pdev->dev, "missing bus clock");
- return PTR_ERR(i2c_clk);
+ return PTR_ERR(fast_clk);
}
i2c_dev = devm_kzalloc(&pdev->dev, sizeof(*i2c_dev), GFP_KERNEL);
@@ -641,8 +701,8 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
}
i2c_dev->base = base;
- i2c_dev->clk = clk;
- i2c_dev->i2c_clk = i2c_clk;
+ i2c_dev->div_clk = div_clk;
+ i2c_dev->fast_clk = fast_clk;
i2c_dev->adapter.algo = &tegra_i2c_algo;
i2c_dev->irq = irq;
i2c_dev->cont_id = pdev->id;
@@ -659,11 +719,18 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
i2c_dev->bus_clk_rate = be32_to_cpup(prop);
}
- if (pdev->dev.of_node)
+ i2c_dev->hw = &tegra20_i2c_hw;
+
+ if (pdev->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_device(of_match_ptr(tegra_i2c_of_match),
+ &pdev->dev);
+ i2c_dev->hw = match->data;
i2c_dev->is_dvc = of_device_is_compatible(pdev->dev.of_node,
"nvidia,tegra20-i2c-dvc");
- else if (pdev->id == 3)
+ } else if (pdev->id == 3) {
i2c_dev->is_dvc = 1;
+ }
init_completion(&i2c_dev->msg_complete);
platform_set_drvdata(pdev, i2c_dev);
@@ -681,8 +748,6 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
return ret;
}
- clk_prepare_enable(i2c_dev->i2c_clk);
-
i2c_set_adapdata(&i2c_dev->adapter, i2c_dev);
i2c_dev->adapter.owner = THIS_MODULE;
i2c_dev->adapter.class = I2C_CLASS_HWMON;
@@ -696,7 +761,6 @@ static int __devinit tegra_i2c_probe(struct platform_device *pdev)
ret = i2c_add_numbered_adapter(&i2c_dev->adapter);
if (ret) {
dev_err(&pdev->dev, "Failed to add I2C adapter\n");
- clk_disable_unprepare(i2c_dev->i2c_clk);
return ret;
}
@@ -751,16 +815,6 @@ static SIMPLE_DEV_PM_OPS(tegra_i2c_pm, tegra_i2c_suspend, tegra_i2c_resume);
#define TEGRA_I2C_PM NULL
#endif
-#if defined(CONFIG_OF)
-/* Match table for of_platform binding */
-static const struct of_device_id tegra_i2c_of_match[] __devinitconst = {
- { .compatible = "nvidia,tegra20-i2c", },
- { .compatible = "nvidia,tegra20-i2c-dvc", },
- {},
-};
-MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
-#endif
-
static struct platform_driver tegra_i2c_driver = {
.probe = tegra_i2c_probe,
.remove = __devexit_p(tegra_i2c_remove),
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-25 01:31:39 +0000