Hi all,
I have converted the isp1301_omap driver to a new-style i2c driver. The
problem is that I don't have an OMAP system nor even an ARM compiler,
so I cannot test my work at all. So, I would appreciate if someone with
access to an OMAP system could test if the isp1301_omap driver still
builds and works fine after applying the two attached patches.
Thanks,
--
Jean Delvare
From: Felipe Balbi <me@xxxxxxxxxxxxxxx>
Subject: i2c/isp1301_omap: Convert to a new-style i2c driver, part 1
Based on David Brownell's patch for tps65010, this patch
starts converting isp1301_omap.c to new-style i2c driver.
Signed-off-by: Felipe Balbi <me@xxxxxxxxxxxxxxx>
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
---
This needs testing! Both build-time and run-time.
drivers/i2c/chips/isp1301_omap.c | 59 +++++++++++++++++++-------------------
1 file changed, 30 insertions(+), 29 deletions(-)
--- linux-2.6.26-rc6.orig/drivers/i2c/chips/isp1301_omap.c 2008-05-04 09:49:48.000000000 +0200
+++ linux-2.6.26-rc6/drivers/i2c/chips/isp1301_omap.c 2008-06-17 16:07:46.000000000 +0200
@@ -49,7 +49,8 @@ MODULE_LICENSE("GPL");
struct isp1301 {
struct otg_transceiver otg;
- struct i2c_client client;
+ struct i2c_client *client;
+ struct i2c_client c;
void (*i2c_release)(struct device *dev);
int irq;
@@ -153,25 +154,25 @@ static struct i2c_driver isp1301_driver;
static inline u8
isp1301_get_u8(struct isp1301 *isp, u8 reg)
{
- return i2c_smbus_read_byte_data(&isp->client, reg + 0);
+ return i2c_smbus_read_byte_data(isp->client, reg + 0);
}
static inline int
isp1301_get_u16(struct isp1301 *isp, u8 reg)
{
- return i2c_smbus_read_word_data(&isp->client, reg);
+ return i2c_smbus_read_word_data(isp->client, reg);
}
static inline int
isp1301_set_bits(struct isp1301 *isp, u8 reg, u8 bits)
{
- return i2c_smbus_write_byte_data(&isp->client, reg + 0, bits);
+ return i2c_smbus_write_byte_data(isp->client, reg + 0, bits);
}
static inline int
isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits)
{
- return i2c_smbus_write_byte_data(&isp->client, reg + 1, bits);
+ return i2c_smbus_write_byte_data(isp->client, reg + 1, bits);
}
/*-------------------------------------------------------------------------*/
@@ -349,10 +350,10 @@ isp1301_defer_work(struct isp1301 *isp,
int status;
if (isp && !test_and_set_bit(work, &isp->todo)) {
- (void) get_device(&isp->client.dev);
+ (void) get_device(&isp->client->dev);
status = schedule_work(&isp->work);
if (!status && !isp->working)
- dev_vdbg(&isp->client.dev,
+ dev_vdbg(&isp->client->dev,
"work item %d may be lost\n", work);
}
}
@@ -1107,7 +1108,7 @@ isp1301_work(struct work_struct *work)
/* transfer state from otg engine to isp1301 */
if (test_and_clear_bit(WORK_UPDATE_ISP, &isp->todo)) {
otg_update_isp(isp);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
#endif
/* transfer state from isp1301 to otg engine */
@@ -1115,7 +1116,7 @@ isp1301_work(struct work_struct *work)
u8 stat = isp1301_clear_latch(isp);
isp_update_otg(isp, stat);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_HOST_RESUME, &isp->todo)) {
@@ -1150,7 +1151,7 @@ isp1301_work(struct work_struct *work)
}
host_resume(isp);
// mdelay(10);
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_TIMER, &isp->todo)) {
@@ -1159,15 +1160,15 @@ isp1301_work(struct work_struct *work)
if (!stop)
mod_timer(&isp->timer, jiffies + TIMER_JIFFIES);
#endif
- put_device(&isp->client.dev);
+ put_device(&isp->client->dev);
}
if (isp->todo)
- dev_vdbg(&isp->client.dev,
+ dev_vdbg(&isp->client->dev,
"work done, todo = 0x%lx\n",
isp->todo);
if (stop) {
- dev_dbg(&isp->client.dev, "stop\n");
+ dev_dbg(&isp->client->dev, "stop\n");
break;
}
} while (isp->todo);
@@ -1191,7 +1192,7 @@ static void isp1301_release(struct devic
{
struct isp1301 *isp;
- isp = container_of(dev, struct isp1301, client.dev);
+ isp = device_get_drvdata(dev);
/* ugly -- i2c hijacks our memory hook to wait_for_completion() */
if (isp->i2c_release)
@@ -1205,7 +1206,7 @@ static int isp1301_detach_client(struct
{
struct isp1301 *isp;
- isp = container_of(i2c, struct isp1301, client);
+ isp = i2c_get_clientdata(i2c);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
@@ -1257,7 +1258,7 @@ static int isp1301_otg_enable(struct isp
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
INTR_VBUS_VLD | INTR_SESS_VLD | INTR_ID_GND);
- dev_info(&isp->client.dev, "ready for dual-role USB ...\n");
+ dev_info(&isp->client->dev, "ready for dual-role USB ...\n");
return 0;
}
@@ -1282,7 +1283,7 @@ isp1301_set_host(struct otg_transceiver
#ifdef CONFIG_USB_OTG
isp->otg.host = host;
- dev_dbg(&isp->client.dev, "registered host\n");
+ dev_dbg(&isp->client->dev, "registered host\n");
host_suspend(isp);
if (isp->otg.gadget)
return isp1301_otg_enable(isp);
@@ -1297,7 +1298,7 @@ isp1301_set_host(struct otg_transceiver
if (machine_is_omap_h2())
isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0);
- dev_info(&isp->client.dev, "A-Host sessions ok\n");
+ dev_info(&isp->client->dev, "A-Host sessions ok\n");
isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING,
INTR_ID_GND);
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
@@ -1315,7 +1316,7 @@ isp1301_set_host(struct otg_transceiver
return 0;
#else
- dev_dbg(&isp->client.dev, "host sessions not allowed\n");
+ dev_dbg(&isp->client->dev, "host sessions not allowed\n");
return -EINVAL;
#endif
@@ -1341,7 +1342,7 @@ isp1301_set_peripheral(struct otg_transc
#ifdef CONFIG_USB_OTG
isp->otg.gadget = gadget;
- dev_dbg(&isp->client.dev, "registered gadget\n");
+ dev_dbg(&isp->client->dev, "registered gadget\n");
/* gadget driver may be suspended until vbus_connect () */
if (isp->otg.host)
return isp1301_otg_enable(isp);
@@ -1364,7 +1365,7 @@ isp1301_set_peripheral(struct otg_transc
INTR_SESS_VLD);
isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
INTR_VBUS_VLD);
- dev_info(&isp->client.dev, "B-Peripheral sessions ok\n");
+ dev_info(&isp->client->dev, "B-Peripheral sessions ok\n");
dump_regs(isp, __func__);
/* If this has a Mini-AB connector, this mode is highly
@@ -1377,7 +1378,7 @@ isp1301_set_peripheral(struct otg_transc
return 0;
#else
- dev_dbg(&isp->client.dev, "peripheral sessions not allowed\n");
+ dev_dbg(&isp->client->dev, "peripheral sessions not allowed\n");
return -EINVAL;
#endif
}
@@ -1493,12 +1494,12 @@ static int isp1301_probe(struct i2c_adap
isp->timer.data = (unsigned long) isp;
isp->irq = -1;
- isp->client.addr = address;
- i2c_set_clientdata(&isp->client, isp);
- isp->client.adapter = bus;
- isp->client.driver = &isp1301_driver;
- strlcpy(isp->client.name, DRIVER_NAME, I2C_NAME_SIZE);
- i2c = &isp->client;
+ isp->c.addr = address;
+ i2c_set_clientdata(&isp->c, isp);
+ isp->c.adapter = bus;
+ isp->c.driver = &isp1301_driver;
+ strlcpy(isp->c.name, DRIVER_NAME, I2C_NAME_SIZE);
+ isp->client = i2c = &isp->c;
/* if this is a true probe, verify the chip ... */
if (kind < 0) {
@@ -1583,7 +1584,7 @@ fail2:
goto fail1;
}
- isp->otg.dev = &isp->client.dev;
+ isp->otg.dev = &isp->client->dev;
isp->otg.label = DRIVER_NAME;
isp->otg.set_host = isp1301_set_host,
From: Jean Delvare <khali@xxxxxxxxxxxx>
Subject: i2c/isp1301_omap: Convert to a new-style i2c driver, part 2
Based on David Brownell's patch for tps65010 and previous work by
Felipe Balbi, this patch finishes conversting isp1301_omap to a
new-style i2c driver.
There's definitely room for further drivers cleanups, but these are
out of the scope of this patch.
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
---
This needs testing! Both build-time and run-time.
arch/arm/mach-omap1/board-h3.c | 4 +
arch/arm/mach-omap2/board-h4.c | 11 ++++
drivers/i2c/chips/isp1301_omap.c | 98 ++++++++++++--------------------------
3 files changed, 48 insertions(+), 65 deletions(-)
--- linux-2.6.26-rc6.orig/arch/arm/mach-omap1/board-h3.c 2008-06-17 16:07:25.000000000 +0200
+++ linux-2.6.26-rc6/arch/arm/mach-omap1/board-h3.c 2008-06-17 16:07:54.000000000 +0200
@@ -476,6 +476,10 @@ static struct i2c_board_info __initdata
I2C_BOARD_INFO("tps65013", 0x48),
/* .irq = OMAP_GPIO_IRQ(??), */
},
+ {
+ I2C_BOARD_INFO("isp1301_omap", 0x2d),
+ .irq = OMAP_GPIO_IRQ(14),
+ },
};
static struct omap_gpio_switch h3_gpio_switches[] __initdata = {
--- linux-2.6.26-rc6.orig/arch/arm/mach-omap2/board-h4.c 2008-06-17 16:07:25.000000000 +0200
+++ linux-2.6.26-rc6/arch/arm/mach-omap2/board-h4.c 2008-06-17 16:07:54.000000000 +0200
@@ -18,6 +18,7 @@
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
+#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/err.h>
#include <linux/clk.h>
@@ -392,6 +393,13 @@ static struct omap_board_config_kernel h
{ OMAP_TAG_LCD, &h4_lcd_config },
};
+static struct i2c_board_info __initdata h4_i2c_board_info[] = {
+ {
+ I2C_BOARD_INFO("isp1301_omap", 0x2d),
+ .irq = OMAP_GPIO_IRQ(125),
+ },
+};
+
static void __init omap_h4_init(void)
{
/*
@@ -412,6 +420,9 @@ static void __init omap_h4_init(void)
}
#endif
+ i2c_register_board_info(1, h4_i2c_board_info,
+ ARRAY_SIZE(h4_i2c_board_info));
+
platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
omap_board_config = h4_config;
omap_board_config_size = ARRAY_SIZE(h4_config);
--- linux-2.6.26-rc6.orig/drivers/i2c/chips/isp1301_omap.c 2008-06-17 16:07:46.000000000 +0200
+++ linux-2.6.26-rc6/drivers/i2c/chips/isp1301_omap.c 2008-06-17 16:19:55.000000000 +0200
@@ -50,10 +50,8 @@ MODULE_LICENSE("GPL");
struct isp1301 {
struct otg_transceiver otg;
struct i2c_client *client;
- struct i2c_client c;
void (*i2c_release)(struct device *dev);
- int irq;
int irq_type;
u32 last_otg_ctrl;
@@ -139,14 +137,6 @@ static inline void notresponding(struct
/*-------------------------------------------------------------------------*/
-/* only two addresses possible */
-#define ISP_BASE 0x2c
-static unsigned short normal_i2c[] = {
- ISP_BASE, ISP_BASE + 1,
- I2C_CLIENT_END };
-
-I2C_CLIENT_INSMOD;
-
static struct i2c_driver isp1301_driver;
/* smbus apis are used for portability */
@@ -1202,7 +1192,7 @@ static void isp1301_release(struct devic
static struct isp1301 *the_transceiver;
-static int isp1301_detach_client(struct i2c_client *i2c)
+static int __exit isp1301_remove(struct i2c_client *i2c)
{
struct isp1301 *isp;
@@ -1210,7 +1200,7 @@ static int isp1301_detach_client(struct
isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
- free_irq(isp->irq, isp);
+ free_irq(i2c->irq, isp);
#ifdef CONFIG_USB_OTG
otg_unbind(isp);
#endif
@@ -1225,7 +1215,7 @@ static int isp1301_detach_client(struct
put_device(&i2c->dev);
the_transceiver = 0;
- return i2c_detach_client(i2c);
+ return 0;
}
/*-------------------------------------------------------------------------*/
@@ -1474,12 +1464,10 @@ isp1301_start_hnp(struct otg_transceiver
/*-------------------------------------------------------------------------*/
-/* no error returns, they'd just make bus scanning stop */
-static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
+static int __init isp1301_probe(struct i2c_client *i2c)
{
int status;
struct isp1301 *isp;
- struct i2c_client *i2c;
if (the_transceiver)
return 0;
@@ -1493,37 +1481,19 @@ static int isp1301_probe(struct i2c_adap
isp->timer.function = isp1301_timer;
isp->timer.data = (unsigned long) isp;
- isp->irq = -1;
- isp->c.addr = address;
- i2c_set_clientdata(&isp->c, isp);
- isp->c.adapter = bus;
- isp->c.driver = &isp1301_driver;
- strlcpy(isp->c.name, DRIVER_NAME, I2C_NAME_SIZE);
- isp->client = i2c = &isp->c;
-
- /* if this is a true probe, verify the chip ... */
- if (kind < 0) {
- status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
- if (status != I2C_VENDOR_ID_PHILIPS) {
- dev_dbg(&bus->dev, "addr %d not philips id: %d\n",
- address, status);
- goto fail1;
- }
- status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
- if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
- dev_dbg(&bus->dev, "%d not isp1301, %d\n",
- address, status);
- goto fail1;
- }
- }
+ i2c_set_clientdata(i2c, isp);
+ isp->client = i2c;
- status = i2c_attach_client(i2c);
- if (status < 0) {
- dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
- DRIVER_NAME, address, status);
-fail1:
- kfree(isp);
- return 0;
+ /* verify the chip (shouldn't be necesary) */
+ status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
+ if (status != I2C_VENDOR_ID_PHILIPS) {
+ dev_dbg(&i2c->dev, "not philips id: %d\n", status);
+ goto fail;
+ }
+ status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
+ if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
+ dev_dbg(&i2c->dev, "not isp1301, %d\n", status);
+ goto fail;
}
isp->i2c_release = i2c->dev.release;
i2c->dev.release = isp1301_release;
@@ -1552,7 +1522,7 @@ fail1:
status = otg_bind(isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't bind OTG\n");
- goto fail2;
+ goto fail;
}
#endif
@@ -1565,26 +1535,21 @@ fail1:
/* IRQ wired at M14 */
omap_cfg_reg(M14_1510_GPIO2);
- isp->irq = OMAP_GPIO_IRQ(2);
if (gpio_request(2, "isp1301") == 0)
gpio_direction_input(2);
isp->irq_type = IRQF_TRIGGER_FALLING;
}
isp->irq_type |= IRQF_SAMPLE_RANDOM;
- status = request_irq(isp->irq, isp1301_irq,
+ status = request_irq(i2c->irq, isp1301_irq,
isp->irq_type, DRIVER_NAME, isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",
- isp->irq, status);
-#ifdef CONFIG_USB_OTG
-fail2:
-#endif
- i2c_detach_client(i2c);
- goto fail1;
+ i2c->irq, status);
+ goto fail;
}
- isp->otg.dev = &isp->client->dev;
+ isp->otg.dev = &i2c->dev;
isp->otg.label = DRIVER_NAME;
isp->otg.set_host = isp1301_set_host,
@@ -1615,22 +1580,25 @@ fail2:
status);
return 0;
-}
-static int isp1301_scan_bus(struct i2c_adapter *bus)
-{
- if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_READ_WORD_DATA))
- return -EINVAL;
- return i2c_probe(bus, &addr_data, isp1301_probe);
+fail:
+ kfree(isp);
+ return -ENODEV;
}
+static struct i2c_device_id isp1301_id[] = {
+ { "isp1301_omap", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, isp1301_id);
+
static struct i2c_driver isp1301_driver = {
.driver = {
.name = "isp1301_omap",
},
- .attach_adapter = isp1301_scan_bus,
- .detach_client = isp1301_detach_client,
+ .probe = isp1301_probe,
+ .remove = __exit_p(isp1301_remove),
+ .id_table = isp1301_id,
};
/*-------------------------------------------------------------------------*/
