forked from Minki/linux
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 converting 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@linux-fr.org> Acked-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Jean Delvare
Jean Delvare
parent
a5f08a327a
commit
9df013b3e4
@ -476,6 +476,10 @@ static struct i2c_board_info __initdata h3_i2c_board_info[] = {
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I2C_BOARD_INFO("tps65013", 0x48),
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/* .irq = OMAP_GPIO_IRQ(??), */
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},
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{
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I2C_BOARD_INFO("isp1301_omap", 0x2d),
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.irq = OMAP_GPIO_IRQ(14),
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},
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};
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static struct omap_gpio_switch h3_gpio_switches[] __initdata = {
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@ -18,6 +18,7 @@
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#include <linux/mtd/partitions.h>
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#include <linux/delay.h>
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#include <linux/workqueue.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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@ -391,6 +392,13 @@ static struct omap_board_config_kernel h4_config[] = {
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{ OMAP_TAG_LCD, &h4_lcd_config },
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};
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static struct i2c_board_info __initdata h4_i2c_board_info[] = {
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{
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I2C_BOARD_INFO("isp1301_omap", 0x2d),
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.irq = OMAP_GPIO_IRQ(125),
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},
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};
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static void __init omap_h4_init(void)
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{
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/*
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@ -411,6 +419,9 @@ static void __init omap_h4_init(void)
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}
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#endif
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i2c_register_board_info(1, h4_i2c_board_info,
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ARRAY_SIZE(h4_i2c_board_info));
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platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
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omap_board_config = h4_config;
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omap_board_config_size = ARRAY_SIZE(h4_config);
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@ -50,10 +50,8 @@ MODULE_LICENSE("GPL");
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struct isp1301 {
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struct otg_transceiver otg;
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struct i2c_client *client;
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struct i2c_client c;
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void (*i2c_release)(struct device *dev);
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int irq;
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int irq_type;
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u32 last_otg_ctrl;
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@ -139,14 +137,6 @@ static inline void notresponding(struct isp1301 *isp)
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/*-------------------------------------------------------------------------*/
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/* only two addresses possible */
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#define ISP_BASE 0x2c
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static unsigned short normal_i2c[] = {
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ISP_BASE, ISP_BASE + 1,
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I2C_CLIENT_END };
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I2C_CLIENT_INSMOD;
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static struct i2c_driver isp1301_driver;
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/* smbus apis are used for portability */
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@ -1230,7 +1220,7 @@ static void isp1301_release(struct device *dev)
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static struct isp1301 *the_transceiver;
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static int isp1301_detach_client(struct i2c_client *i2c)
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static int __exit isp1301_remove(struct i2c_client *i2c)
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{
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struct isp1301 *isp;
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@ -1238,7 +1228,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
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isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
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isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
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free_irq(isp->irq, isp);
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free_irq(i2c->irq, isp);
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#ifdef CONFIG_USB_OTG
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otg_unbind(isp);
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#endif
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@ -1253,7 +1243,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
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put_device(&i2c->dev);
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the_transceiver = 0;
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return i2c_detach_client(i2c);
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return 0;
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}
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/*-------------------------------------------------------------------------*/
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@ -1509,12 +1499,10 @@ isp1301_start_hnp(struct otg_transceiver *dev)
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/*-------------------------------------------------------------------------*/
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/* no error returns, they'd just make bus scanning stop */
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static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
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static int __init isp1301_probe(struct i2c_client *i2c)
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{
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int status;
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struct isp1301 *isp;
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struct i2c_client *i2c;
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if (the_transceiver)
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return 0;
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@ -1528,37 +1516,19 @@ static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
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isp->timer.function = isp1301_timer;
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isp->timer.data = (unsigned long) isp;
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isp->irq = -1;
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isp->c.addr = address;
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i2c_set_clientdata(&isp->c, isp);
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isp->c.adapter = bus;
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isp->c.driver = &isp1301_driver;
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strlcpy(isp->c.name, DRIVER_NAME, I2C_NAME_SIZE);
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isp->client = i2c = &isp->c;
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i2c_set_clientdata(i2c, isp);
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isp->client = i2c;
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/* if this is a true probe, verify the chip ... */
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if (kind < 0) {
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status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
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if (status != I2C_VENDOR_ID_PHILIPS) {
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dev_dbg(&bus->dev, "addr %d not philips id: %d\n",
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address, status);
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goto fail1;
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}
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status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
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if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
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dev_dbg(&bus->dev, "%d not isp1301, %d\n",
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address, status);
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goto fail1;
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}
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/* verify the chip (shouldn't be necesary) */
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status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
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if (status != I2C_VENDOR_ID_PHILIPS) {
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dev_dbg(&i2c->dev, "not philips id: %d\n", status);
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goto fail;
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}
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status = i2c_attach_client(i2c);
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if (status < 0) {
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dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
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DRIVER_NAME, address, status);
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fail1:
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kfree(isp);
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return 0;
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status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
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if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
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dev_dbg(&i2c->dev, "not isp1301, %d\n", status);
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goto fail;
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}
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isp->i2c_release = i2c->dev.release;
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i2c->dev.release = isp1301_release;
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@ -1587,7 +1557,7 @@ fail1:
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status = otg_bind(isp);
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if (status < 0) {
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dev_dbg(&i2c->dev, "can't bind OTG\n");
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goto fail2;
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goto fail;
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}
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#endif
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@ -1600,26 +1570,21 @@ fail1:
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/* IRQ wired at M14 */
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omap_cfg_reg(M14_1510_GPIO2);
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isp->irq = OMAP_GPIO_IRQ(2);
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if (gpio_request(2, "isp1301") == 0)
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gpio_direction_input(2);
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isp->irq_type = IRQF_TRIGGER_FALLING;
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}
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isp->irq_type |= IRQF_SAMPLE_RANDOM;
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status = request_irq(isp->irq, isp1301_irq,
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status = request_irq(i2c->irq, isp1301_irq,
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isp->irq_type, DRIVER_NAME, isp);
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if (status < 0) {
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dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",
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isp->irq, status);
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#ifdef CONFIG_USB_OTG
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fail2:
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#endif
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i2c_detach_client(i2c);
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goto fail1;
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i2c->irq, status);
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goto fail;
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}
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isp->otg.dev = &isp->client->dev;
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isp->otg.dev = &i2c->dev;
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isp->otg.label = DRIVER_NAME;
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isp->otg.set_host = isp1301_set_host,
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@ -1650,22 +1615,25 @@ fail2:
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status);
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return 0;
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fail:
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kfree(isp);
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return -ENODEV;
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}
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static int isp1301_scan_bus(struct i2c_adapter *bus)
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{
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if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA
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| I2C_FUNC_SMBUS_READ_WORD_DATA))
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return -EINVAL;
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return i2c_probe(bus, &addr_data, isp1301_probe);
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}
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static const struct i2c_device_id isp1301_id[] = {
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{ "isp1301_omap", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, isp1301_id);
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static struct i2c_driver isp1301_driver = {
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.driver = {
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.name = "isp1301_omap",
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},
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.attach_adapter = isp1301_scan_bus,
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.detach_client = isp1301_detach_client,
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.probe = isp1301_probe,
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.remove = __exit_p(isp1301_remove),
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.id_table = isp1301_id,
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};
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/*-------------------------------------------------------------------------*/
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