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1040 lines
28 KiB
1040 lines
28 KiB
---
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drivers/rtc/rtc-isl1208.c | 357 +++++++++++++++++++++-------------------------
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1 file changed, 170 insertions(+), 187 deletions(-)
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Index: linux-2.6.24-arm/drivers/rtc/rtc-isl1208.c
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===================================================================
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--- linux-2.6.24-arm.orig/drivers/rtc/rtc-isl1208.c 2008-02-01 13:33:11.000000000 +1030
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+++ linux-2.6.24-arm/drivers/rtc/rtc-isl1208.c 2008-02-01 13:36:24.000000000 +1030
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@@ -15,16 +15,15 @@
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#include <linux/bcd.h>
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#include <linux/rtc.h>
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-#define DRV_NAME "isl1208"
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-#define DRV_VERSION "0.2"
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+#define DRV_VERSION "0.3"
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/* Register map */
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/* rtc section */
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#define ISL1208_REG_SC 0x00
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#define ISL1208_REG_MN 0x01
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#define ISL1208_REG_HR 0x02
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-#define ISL1208_REG_HR_MIL (1<<7) /* 24h/12h mode */
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-#define ISL1208_REG_HR_PM (1<<5) /* PM/AM bit in 12h mode */
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+#define ISL1208_REG_HR_MIL (1<<7) /* 24h/12h mode */
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+#define ISL1208_REG_HR_PM (1<<5) /* PM/AM bit in 12h mode */
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#define ISL1208_REG_DT 0x03
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#define ISL1208_REG_MO 0x04
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#define ISL1208_REG_YR 0x05
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@@ -33,14 +32,14 @@
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/* control/status section */
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#define ISL1208_REG_SR 0x07
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-#define ISL1208_REG_SR_ARST (1<<7) /* auto reset */
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-#define ISL1208_REG_SR_XTOSCB (1<<6) /* crystal oscillator */
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-#define ISL1208_REG_SR_WRTC (1<<4) /* write rtc */
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-#define ISL1208_REG_SR_ALM (1<<2) /* alarm */
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-#define ISL1208_REG_SR_BAT (1<<1) /* battery */
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-#define ISL1208_REG_SR_RTCF (1<<0) /* rtc fail */
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+#define ISL1208_REG_SR_ARST (1<<7) /* auto reset */
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+#define ISL1208_REG_SR_XTOSCB (1<<6) /* crystal oscillator */
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+#define ISL1208_REG_SR_WRTC (1<<4) /* write rtc */
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+#define ISL1208_REG_SR_ALM (1<<2) /* alarm */
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+#define ISL1208_REG_SR_BAT (1<<1) /* battery */
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+#define ISL1208_REG_SR_RTCF (1<<0) /* rtc fail */
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#define ISL1208_REG_INT 0x08
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-#define ISL1208_REG_09 0x09 /* reserved */
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+#define ISL1208_REG_09 0x09 /* reserved */
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#define ISL1208_REG_ATR 0x0a
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#define ISL1208_REG_DTR 0x0b
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@@ -58,35 +57,18 @@
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#define ISL1208_REG_USR2 0x13
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#define ISL1208_USR_SECTION_LEN 2
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-/* i2c configuration */
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-#define ISL1208_I2C_ADDR 0xde
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-
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-static unsigned short normal_i2c[] = {
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- ISL1208_I2C_ADDR>>1, I2C_CLIENT_END
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-};
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-I2C_CLIENT_INSMOD; /* defines addr_data */
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-
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-static int isl1208_attach_adapter(struct i2c_adapter *adapter);
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-static int isl1208_detach_client(struct i2c_client *client);
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-
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-static struct i2c_driver isl1208_driver = {
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- .driver = {
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- .name = DRV_NAME,
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- },
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- .id = I2C_DRIVERID_ISL1208,
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- .attach_adapter = &isl1208_attach_adapter,
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- .detach_client = &isl1208_detach_client,
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-};
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+static struct i2c_driver isl1208_driver;
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/* block read */
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static int
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isl1208_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[],
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- unsigned len)
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+ unsigned len)
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{
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u8 reg_addr[1] = { reg };
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struct i2c_msg msgs[2] = {
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- { client->addr, client->flags, sizeof(reg_addr), reg_addr },
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- { client->addr, client->flags | I2C_M_RD, len, buf }
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+ {client->addr, client->flags, sizeof(reg_addr), reg_addr}
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+ ,
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+ {client->addr, client->flags | I2C_M_RD, len, buf}
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};
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int ret;
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@@ -103,15 +85,14 @@
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/* block write */
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static int
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isl1208_i2c_set_regs(struct i2c_client *client, u8 reg, u8 const buf[],
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- unsigned len)
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+ unsigned len)
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{
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u8 i2c_buf[ISL1208_REG_USR2 + 2];
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struct i2c_msg msgs[1] = {
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- { client->addr, client->flags, len + 1, i2c_buf }
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+ {client->addr, client->flags, len + 1, i2c_buf}
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};
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int ret;
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- BUG_ON(len == 0);
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BUG_ON(reg > ISL1208_REG_USR2);
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BUG_ON(reg + len > ISL1208_REG_USR2 + 1);
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@@ -125,7 +106,8 @@
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}
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/* simple check to see wether we have a isl1208 */
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-static int isl1208_i2c_validate_client(struct i2c_client *client)
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+static int
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+isl1208_i2c_validate_client(struct i2c_client *client)
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{
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u8 regs[ISL1208_RTC_SECTION_LEN] = { 0, };
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u8 zero_mask[ISL1208_RTC_SECTION_LEN] = {
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@@ -139,24 +121,29 @@
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return ret;
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for (i = 0; i < ISL1208_RTC_SECTION_LEN; ++i) {
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- if (regs[i] & zero_mask[i]) /* check if bits are cleared */
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+ if (regs[i] & zero_mask[i]) /* check if bits are cleared */
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return -ENODEV;
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}
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return 0;
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}
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-static int isl1208_i2c_get_sr(struct i2c_client *client)
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+static int
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+isl1208_i2c_get_sr(struct i2c_client *client)
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{
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- return i2c_smbus_read_byte_data(client, ISL1208_REG_SR) == -1 ? -EIO:0;
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+ int sr = i2c_smbus_read_byte_data(client, ISL1208_REG_SR);
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+ if (sr < 0)
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+ return -EIO;
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+
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+ return sr;
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}
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-static int isl1208_i2c_get_atr(struct i2c_client *client)
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+static int
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+isl1208_i2c_get_atr(struct i2c_client *client)
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{
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int atr = i2c_smbus_read_byte_data(client, ISL1208_REG_ATR);
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-
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if (atr < 0)
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- return -EIO;
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+ return atr;
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/* The 6bit value in the ATR register controls the load
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* capacitance C_load * in steps of 0.25pF
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@@ -169,51 +156,54 @@
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*
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*/
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- atr &= 0x3f; /* mask out lsb */
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- atr ^= 1<<5; /* invert 6th bit */
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- atr += 2*9; /* add offset of 4.5pF; unit[atr] = 0.25pF */
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+ atr &= 0x3f; /* mask out lsb */
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+ atr ^= 1 << 5; /* invert 6th bit */
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+ atr += 2 * 9; /* add offset of 4.5pF; unit[atr] = 0.25pF */
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return atr;
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}
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-static int isl1208_i2c_get_dtr(struct i2c_client *client)
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+static int
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+isl1208_i2c_get_dtr(struct i2c_client *client)
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{
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int dtr = i2c_smbus_read_byte_data(client, ISL1208_REG_DTR);
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-
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if (dtr < 0)
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return -EIO;
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/* dtr encodes adjustments of {-60,-40,-20,0,20,40,60} ppm */
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- dtr = ((dtr & 0x3) * 20) * (dtr & (1<<2) ? -1 : 1);
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+ dtr = ((dtr & 0x3) * 20) * (dtr & (1 << 2) ? -1 : 1);
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return dtr;
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}
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-static int isl1208_i2c_get_usr(struct i2c_client *client)
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+static int
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+isl1208_i2c_get_usr(struct i2c_client *client)
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{
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u8 buf[ISL1208_USR_SECTION_LEN] = { 0, };
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int ret;
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- ret = isl1208_i2c_read_regs (client, ISL1208_REG_USR1, buf,
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- ISL1208_USR_SECTION_LEN);
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+ ret = isl1208_i2c_read_regs(client, ISL1208_REG_USR1, buf,
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+ ISL1208_USR_SECTION_LEN);
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if (ret < 0)
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return ret;
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return (buf[1] << 8) | buf[0];
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}
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-static int isl1208_i2c_set_usr(struct i2c_client *client, u16 usr)
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+static int
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+isl1208_i2c_set_usr(struct i2c_client *client, u16 usr)
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{
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u8 buf[ISL1208_USR_SECTION_LEN];
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buf[0] = usr & 0xff;
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buf[1] = (usr >> 8) & 0xff;
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- return isl1208_i2c_set_regs (client, ISL1208_REG_USR1, buf,
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- ISL1208_USR_SECTION_LEN);
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+ return isl1208_i2c_set_regs(client, ISL1208_REG_USR1, buf,
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+ ISL1208_USR_SECTION_LEN);
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}
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-static int isl1208_rtc_proc(struct device *dev, struct seq_file *seq)
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+static int
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+isl1208_rtc_proc(struct device *dev, struct seq_file *seq)
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{
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struct i2c_client *const client = to_i2c_client(dev);
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int sr, dtr, atr, usr;
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@@ -230,20 +220,19 @@
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(sr & ISL1208_REG_SR_ALM) ? " ALM" : "",
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(sr & ISL1208_REG_SR_WRTC) ? " WRTC" : "",
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(sr & ISL1208_REG_SR_XTOSCB) ? " XTOSCB" : "",
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- (sr & ISL1208_REG_SR_ARST) ? " ARST" : "",
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- sr);
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+ (sr & ISL1208_REG_SR_ARST) ? " ARST" : "", sr);
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seq_printf(seq, "batt_status\t: %s\n",
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(sr & ISL1208_REG_SR_RTCF) ? "bad" : "okay");
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dtr = isl1208_i2c_get_dtr(client);
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- if (dtr >= 0 -1)
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+ if (dtr >= 0 - 1)
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seq_printf(seq, "digital_trim\t: %d ppm\n", dtr);
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atr = isl1208_i2c_get_atr(client);
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if (atr >= 0)
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seq_printf(seq, "analog_trim\t: %d.%.2d pF\n",
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- atr>>2, (atr&0x3)*25);
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+ atr >> 2, (atr & 0x3) * 25);
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usr = isl1208_i2c_get_usr(client);
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if (usr >= 0)
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@@ -252,9 +241,8 @@
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return 0;
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}
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-
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-static int isl1208_i2c_read_time(struct i2c_client *client,
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- struct rtc_time *tm)
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+static int
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+isl1208_i2c_read_time(struct i2c_client *client, struct rtc_time *tm)
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{
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int sr;
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u8 regs[ISL1208_RTC_SECTION_LEN] = { 0, };
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@@ -274,27 +262,30 @@
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tm->tm_sec = BCD2BIN(regs[ISL1208_REG_SC]);
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tm->tm_min = BCD2BIN(regs[ISL1208_REG_MN]);
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- { /* HR field has a more complex interpretation */
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+
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+ /* HR field has a more complex interpretation */
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+ {
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const u8 _hr = regs[ISL1208_REG_HR];
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- if (_hr & ISL1208_REG_HR_MIL) /* 24h format */
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+ if (_hr & ISL1208_REG_HR_MIL) /* 24h format */
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tm->tm_hour = BCD2BIN(_hr & 0x3f);
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- else { // 12h format
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+ else {
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+ /* 12h format */
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tm->tm_hour = BCD2BIN(_hr & 0x1f);
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- if (_hr & ISL1208_REG_HR_PM) /* PM flag set */
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+ if (_hr & ISL1208_REG_HR_PM) /* PM flag set */
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tm->tm_hour += 12;
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}
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}
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tm->tm_mday = BCD2BIN(regs[ISL1208_REG_DT]);
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- tm->tm_mon = BCD2BIN(regs[ISL1208_REG_MO]) - 1; /* rtc starts at 1 */
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+ tm->tm_mon = BCD2BIN(regs[ISL1208_REG_MO]) - 1; /* rtc starts at 1 */
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tm->tm_year = BCD2BIN(regs[ISL1208_REG_YR]) + 100;
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tm->tm_wday = BCD2BIN(regs[ISL1208_REG_DW]);
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return 0;
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}
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-static int isl1208_i2c_read_alarm(struct i2c_client *client,
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- struct rtc_wkalrm *alarm)
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+static int
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+isl1208_i2c_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alarm)
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{
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struct rtc_time *const tm = &alarm->time;
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u8 regs[ISL1208_ALARM_SECTION_LEN] = { 0, };
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@@ -307,7 +298,7 @@
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}
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sr = isl1208_i2c_read_regs(client, ISL1208_REG_SCA, regs,
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- ISL1208_ALARM_SECTION_LEN);
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+ ISL1208_ALARM_SECTION_LEN);
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if (sr < 0) {
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dev_err(&client->dev, "%s: reading alarm section failed\n",
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__func__);
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@@ -315,23 +306,25 @@
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}
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/* MSB of each alarm register is an enable bit */
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- tm->tm_sec = BCD2BIN(regs[ISL1208_REG_SCA-ISL1208_REG_SCA] & 0x7f);
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- tm->tm_min = BCD2BIN(regs[ISL1208_REG_MNA-ISL1208_REG_SCA] & 0x7f);
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- tm->tm_hour = BCD2BIN(regs[ISL1208_REG_HRA-ISL1208_REG_SCA] & 0x3f);
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- tm->tm_mday = BCD2BIN(regs[ISL1208_REG_DTA-ISL1208_REG_SCA] & 0x3f);
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- tm->tm_mon = BCD2BIN(regs[ISL1208_REG_MOA-ISL1208_REG_SCA] & 0x1f)-1;
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- tm->tm_wday = BCD2BIN(regs[ISL1208_REG_DWA-ISL1208_REG_SCA] & 0x03);
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+ tm->tm_sec = BCD2BIN(regs[ISL1208_REG_SCA - ISL1208_REG_SCA] & 0x7f);
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+ tm->tm_min = BCD2BIN(regs[ISL1208_REG_MNA - ISL1208_REG_SCA] & 0x7f);
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+ tm->tm_hour = BCD2BIN(regs[ISL1208_REG_HRA - ISL1208_REG_SCA] & 0x3f);
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+ tm->tm_mday = BCD2BIN(regs[ISL1208_REG_DTA - ISL1208_REG_SCA] & 0x3f);
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+ tm->tm_mon =
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+ BCD2BIN(regs[ISL1208_REG_MOA - ISL1208_REG_SCA] & 0x1f) - 1;
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+ tm->tm_wday = BCD2BIN(regs[ISL1208_REG_DWA - ISL1208_REG_SCA] & 0x03);
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return 0;
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}
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-static int isl1208_rtc_read_time(struct device *dev, struct rtc_time *tm)
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+static int
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+isl1208_rtc_read_time(struct device *dev, struct rtc_time *tm)
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{
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return isl1208_i2c_read_time(to_i2c_client(dev), tm);
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}
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-static int isl1208_i2c_set_time(struct i2c_client *client,
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- struct rtc_time const *tm)
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+static int
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+isl1208_i2c_set_time(struct i2c_client *client, struct rtc_time const *tm)
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{
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int sr;
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u8 regs[ISL1208_RTC_SECTION_LEN] = { 0, };
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@@ -353,7 +346,7 @@
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}
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/* set WRTC */
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- sr = i2c_smbus_write_byte_data (client, ISL1208_REG_SR,
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+ sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR,
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sr | ISL1208_REG_SR_WRTC);
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if (sr < 0) {
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dev_err(&client->dev, "%s: writing SR failed\n", __func__);
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@@ -369,7 +362,7 @@
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}
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/* clear WRTC again */
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- sr = i2c_smbus_write_byte_data (client, ISL1208_REG_SR,
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+ sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR,
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sr & ~ISL1208_REG_SR_WRTC);
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if (sr < 0) {
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dev_err(&client->dev, "%s: writing SR failed\n", __func__);
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@@ -380,70 +373,69 @@
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}
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-static int isl1208_rtc_set_time(struct device *dev, struct rtc_time *tm)
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+static int
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+isl1208_rtc_set_time(struct device *dev, struct rtc_time *tm)
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{
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return isl1208_i2c_set_time(to_i2c_client(dev), tm);
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}
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-static int isl1208_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
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+static int
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+isl1208_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
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{
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return isl1208_i2c_read_alarm(to_i2c_client(dev), alarm);
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}
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static const struct rtc_class_ops isl1208_rtc_ops = {
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- .proc = isl1208_rtc_proc,
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- .read_time = isl1208_rtc_read_time,
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- .set_time = isl1208_rtc_set_time,
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- .read_alarm = isl1208_rtc_read_alarm,
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- //.set_alarm = isl1208_rtc_set_alarm,
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+ .proc = isl1208_rtc_proc,
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+ .read_time = isl1208_rtc_read_time,
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+ .set_time = isl1208_rtc_set_time,
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+ .read_alarm = isl1208_rtc_read_alarm,
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+ /*.set_alarm = isl1208_rtc_set_alarm, */
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};
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/* sysfs interface */
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-static ssize_t isl1208_sysfs_show_atrim(struct device *dev,
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- struct device_attribute *attr,
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- char *buf)
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+static ssize_t
|
|
+isl1208_sysfs_show_atrim(struct device *dev,
|
|
+ struct device_attribute *attr, char *buf)
|
|
{
|
|
- int atr;
|
|
-
|
|
- atr = isl1208_i2c_get_atr(to_i2c_client(dev));
|
|
+ int atr = isl1208_i2c_get_atr(to_i2c_client(dev));
|
|
if (atr < 0)
|
|
return atr;
|
|
|
|
- return sprintf(buf, "%d.%.2d pF\n", atr>>2, (atr&0x3)*25);
|
|
+ return sprintf(buf, "%d.%.2d pF\n", atr >> 2, (atr & 0x3) * 25);
|
|
}
|
|
+
|
|
static DEVICE_ATTR(atrim, S_IRUGO, isl1208_sysfs_show_atrim, NULL);
|
|
|
|
-static ssize_t isl1208_sysfs_show_dtrim(struct device *dev,
|
|
- struct device_attribute *attr,
|
|
- char *buf)
|
|
+static ssize_t
|
|
+isl1208_sysfs_show_dtrim(struct device *dev,
|
|
+ struct device_attribute *attr, char *buf)
|
|
{
|
|
- int dtr;
|
|
-
|
|
- dtr = isl1208_i2c_get_dtr(to_i2c_client(dev));
|
|
+ int dtr = isl1208_i2c_get_dtr(to_i2c_client(dev));
|
|
if (dtr < 0)
|
|
return dtr;
|
|
|
|
return sprintf(buf, "%d ppm\n", dtr);
|
|
}
|
|
+
|
|
static DEVICE_ATTR(dtrim, S_IRUGO, isl1208_sysfs_show_dtrim, NULL);
|
|
|
|
-static ssize_t isl1208_sysfs_show_usr(struct device *dev,
|
|
- struct device_attribute *attr,
|
|
- char *buf)
|
|
+static ssize_t
|
|
+isl1208_sysfs_show_usr(struct device *dev,
|
|
+ struct device_attribute *attr, char *buf)
|
|
{
|
|
- int usr;
|
|
-
|
|
- usr = isl1208_i2c_get_usr(to_i2c_client(dev));
|
|
+ int usr = isl1208_i2c_get_usr(to_i2c_client(dev));
|
|
if (usr < 0)
|
|
return usr;
|
|
|
|
return sprintf(buf, "0x%.4x\n", usr);
|
|
}
|
|
|
|
-static ssize_t isl1208_sysfs_store_usr(struct device *dev,
|
|
- struct device_attribute *attr,
|
|
- const char *buf, size_t count)
|
|
+static ssize_t
|
|
+isl1208_sysfs_store_usr(struct device *dev,
|
|
+ struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
{
|
|
int usr = -1;
|
|
|
|
@@ -460,124 +452,116 @@
|
|
|
|
return isl1208_i2c_set_usr(to_i2c_client(dev), usr) ? -EIO : count;
|
|
}
|
|
+
|
|
static DEVICE_ATTR(usr, S_IRUGO | S_IWUSR, isl1208_sysfs_show_usr,
|
|
isl1208_sysfs_store_usr);
|
|
|
|
static int
|
|
-isl1208_probe(struct i2c_adapter *adapter, int addr, int kind)
|
|
+isl1208_sysfs_register(struct device *dev)
|
|
{
|
|
- int rc = 0;
|
|
- struct i2c_client *new_client = NULL;
|
|
- struct rtc_device *rtc = NULL;
|
|
+ int err;
|
|
+
|
|
+ err = device_create_file(dev, &dev_attr_atrim);
|
|
+ if (err)
|
|
+ return err;
|
|
|
|
- if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
|
|
- rc = -ENODEV;
|
|
- goto failout;
|
|
+ err = device_create_file(dev, &dev_attr_dtrim);
|
|
+ if (err) {
|
|
+ device_remove_file(dev, &dev_attr_atrim);
|
|
+ return err;
|
|
}
|
|
|
|
- new_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
- if (new_client == NULL) {
|
|
- rc = -ENOMEM;
|
|
- goto failout;
|
|
+ err = device_create_file(dev, &dev_attr_usr);
|
|
+ if (err) {
|
|
+ device_remove_file(dev, &dev_attr_atrim);
|
|
+ device_remove_file(dev, &dev_attr_dtrim);
|
|
}
|
|
|
|
- new_client->addr = addr;
|
|
- new_client->adapter = adapter;
|
|
- new_client->driver = &isl1208_driver;
|
|
- new_client->flags = 0;
|
|
- strcpy(new_client->name, DRV_NAME);
|
|
+ return 0;
|
|
+}
|
|
|
|
- if (kind < 0) {
|
|
- rc = isl1208_i2c_validate_client(new_client);
|
|
- if (rc < 0)
|
|
- goto failout;
|
|
- }
|
|
+static int
|
|
+isl1208_sysfs_unregister(struct device *dev)
|
|
+{
|
|
+ device_remove_file(dev, &dev_attr_atrim);
|
|
+ device_remove_file(dev, &dev_attr_atrim);
|
|
+ device_remove_file(dev, &dev_attr_usr);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+isl1208_probe(struct i2c_client *client)
|
|
+{
|
|
+ int rc = 0;
|
|
+ struct rtc_device *rtc;
|
|
|
|
- rc = i2c_attach_client(new_client);
|
|
- if (rc < 0)
|
|
- goto failout;
|
|
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
|
|
+ return -ENODEV;
|
|
|
|
- dev_info(&new_client->dev,
|
|
+ if (isl1208_i2c_validate_client(client) < 0)
|
|
+ return -ENODEV;
|
|
+
|
|
+ dev_info(&client->dev,
|
|
"chip found, driver version " DRV_VERSION "\n");
|
|
|
|
rtc = rtc_device_register(isl1208_driver.driver.name,
|
|
- &new_client->dev,
|
|
- &isl1208_rtc_ops, THIS_MODULE);
|
|
-
|
|
- if (IS_ERR(rtc)) {
|
|
- rc = PTR_ERR(rtc);
|
|
- goto failout_detach;
|
|
- }
|
|
+ &client->dev, &isl1208_rtc_ops,
|
|
+ THIS_MODULE);
|
|
+ if (IS_ERR(rtc))
|
|
+ return PTR_ERR(rtc);
|
|
|
|
- i2c_set_clientdata(new_client, rtc);
|
|
+ i2c_set_clientdata(client, rtc);
|
|
|
|
- rc = isl1208_i2c_get_sr(new_client);
|
|
+ rc = isl1208_i2c_get_sr(client);
|
|
if (rc < 0) {
|
|
- dev_err(&new_client->dev, "reading status failed\n");
|
|
- goto failout_unregister;
|
|
+ dev_err(&client->dev, "reading status failed\n");
|
|
+ goto exit_unregister;
|
|
}
|
|
|
|
if (rc & ISL1208_REG_SR_RTCF)
|
|
- dev_warn(&new_client->dev, "rtc power failure detected, "
|
|
+ dev_warn(&client->dev, "rtc power failure detected, "
|
|
"please set clock.\n");
|
|
|
|
- rc = device_create_file(&new_client->dev, &dev_attr_atrim);
|
|
- if (rc < 0)
|
|
- goto failout_unregister;
|
|
- rc = device_create_file(&new_client->dev, &dev_attr_dtrim);
|
|
- if (rc < 0)
|
|
- goto failout_atrim;
|
|
- rc = device_create_file(&new_client->dev, &dev_attr_usr);
|
|
- if (rc < 0)
|
|
- goto failout_dtrim;
|
|
+ rc = isl1208_sysfs_register(&client->dev);
|
|
+ if (rc)
|
|
+ goto exit_unregister;
|
|
|
|
return 0;
|
|
|
|
- failout_dtrim:
|
|
- device_remove_file(&new_client->dev, &dev_attr_dtrim);
|
|
- failout_atrim:
|
|
- device_remove_file(&new_client->dev, &dev_attr_atrim);
|
|
- failout_unregister:
|
|
+ exit_unregister:
|
|
rtc_device_unregister(rtc);
|
|
- failout_detach:
|
|
- i2c_detach_client(new_client);
|
|
- failout:
|
|
- kfree(new_client);
|
|
- return rc;
|
|
-}
|
|
|
|
-static int
|
|
-isl1208_attach_adapter (struct i2c_adapter *adapter)
|
|
-{
|
|
- return i2c_probe(adapter, &addr_data, isl1208_probe);
|
|
+ return rc;
|
|
}
|
|
|
|
static int
|
|
-isl1208_detach_client(struct i2c_client *client)
|
|
+isl1208_remove(struct i2c_client *client)
|
|
{
|
|
- int rc;
|
|
- struct rtc_device *const rtc = i2c_get_clientdata(client);
|
|
-
|
|
- if (rtc)
|
|
- rtc_device_unregister(rtc); /* do we need to kfree? */
|
|
-
|
|
- rc = i2c_detach_client(client);
|
|
- if (rc)
|
|
- return rc;
|
|
+ struct rtc_device *rtc = i2c_get_clientdata(client);
|
|
|
|
- kfree(client);
|
|
+ isl1208_sysfs_unregister(&client->dev);
|
|
+ rtc_device_unregister(rtc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
-/* module management */
|
|
+static struct i2c_driver isl1208_driver = {
|
|
+ .driver = {
|
|
+ .name = "rtc-isl1208",
|
|
+ },
|
|
+ .probe = isl1208_probe,
|
|
+ .remove = isl1208_remove,
|
|
+};
|
|
|
|
-static int __init isl1208_init(void)
|
|
+static int __init
|
|
+isl1208_init(void)
|
|
{
|
|
return i2c_add_driver(&isl1208_driver);
|
|
}
|
|
|
|
-static void __exit isl1208_exit(void)
|
|
+static void __exit
|
|
+isl1208_exit(void)
|
|
{
|
|
i2c_del_driver(&isl1208_driver);
|
|
}
|
|
---
|
|
drivers/rtc/rtc-pcf8563.c | 109 +++++++++++++---------------------------------
|
|
1 file changed, 32 insertions(+), 77 deletions(-)
|
|
|
|
Index: linux-2.6.24-armeb/drivers/rtc/rtc-pcf8563.c
|
|
===================================================================
|
|
--- linux-2.6.24-armeb.orig/drivers/rtc/rtc-pcf8563.c 2008-01-30 13:50:01.000000000 +1030
|
|
+++ linux-2.6.24-armeb/drivers/rtc/rtc-pcf8563.c 2008-01-30 13:51:55.000000000 +1030
|
|
@@ -18,17 +18,7 @@
|
|
#include <linux/bcd.h>
|
|
#include <linux/rtc.h>
|
|
|
|
-#define DRV_VERSION "0.4.2"
|
|
-
|
|
-/* Addresses to scan: none
|
|
- * This chip cannot be reliably autodetected. An empty eeprom
|
|
- * located at 0x51 will pass the validation routine due to
|
|
- * the way the registers are implemented.
|
|
- */
|
|
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
|
|
-
|
|
-/* Module parameters */
|
|
-I2C_CLIENT_INSMOD;
|
|
+#define DRV_VERSION "0.4.3"
|
|
|
|
#define PCF8563_REG_ST1 0x00 /* status */
|
|
#define PCF8563_REG_ST2 0x01
|
|
@@ -53,8 +43,10 @@
|
|
#define PCF8563_SC_LV 0x80 /* low voltage */
|
|
#define PCF8563_MO_C 0x80 /* century */
|
|
|
|
+static struct i2c_driver pcf8563_driver;
|
|
+
|
|
struct pcf8563 {
|
|
- struct i2c_client client;
|
|
+ struct rtc_device *rtc;
|
|
/*
|
|
* The meaning of MO_C bit varies by the chip type.
|
|
* From PCF8563 datasheet: this bit is toggled when the years
|
|
@@ -72,16 +64,13 @@
|
|
int c_polarity; /* 0: MO_C=1 means 19xx, otherwise MO_C=1 means 20xx */
|
|
};
|
|
|
|
-static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind);
|
|
-static int pcf8563_detach(struct i2c_client *client);
|
|
-
|
|
/*
|
|
* In the routines that deal directly with the pcf8563 hardware, we use
|
|
* rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
|
|
*/
|
|
static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm)
|
|
{
|
|
- struct pcf8563 *pcf8563 = container_of(client, struct pcf8563, client);
|
|
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
|
|
unsigned char buf[13] = { PCF8563_REG_ST1 };
|
|
|
|
struct i2c_msg msgs[] = {
|
|
@@ -138,7 +127,7 @@
|
|
|
|
static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
|
|
{
|
|
- struct pcf8563 *pcf8563 = container_of(client, struct pcf8563, client);
|
|
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
|
|
int i, err;
|
|
unsigned char buf[9];
|
|
|
|
@@ -257,100 +246,66 @@
|
|
.set_time = pcf8563_rtc_set_time,
|
|
};
|
|
|
|
-static int pcf8563_attach(struct i2c_adapter *adapter)
|
|
-{
|
|
- return i2c_probe(adapter, &addr_data, pcf8563_probe);
|
|
-}
|
|
-
|
|
-static struct i2c_driver pcf8563_driver = {
|
|
- .driver = {
|
|
- .name = "pcf8563",
|
|
- },
|
|
- .id = I2C_DRIVERID_PCF8563,
|
|
- .attach_adapter = &pcf8563_attach,
|
|
- .detach_client = &pcf8563_detach,
|
|
-};
|
|
-
|
|
-static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind)
|
|
+static int pcf8563_probe(struct i2c_client *client)
|
|
{
|
|
struct pcf8563 *pcf8563;
|
|
- struct i2c_client *client;
|
|
- struct rtc_device *rtc;
|
|
|
|
int err = 0;
|
|
|
|
- dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
|
|
+ dev_dbg(&client->dev, "%s\n", __FUNCTION__);
|
|
|
|
- if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
|
|
- err = -ENODEV;
|
|
- goto exit;
|
|
- }
|
|
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
|
|
+ return -ENODEV;
|
|
|
|
- if (!(pcf8563 = kzalloc(sizeof(struct pcf8563), GFP_KERNEL))) {
|
|
- err = -ENOMEM;
|
|
- goto exit;
|
|
- }
|
|
-
|
|
- client = &pcf8563->client;
|
|
- client->addr = address;
|
|
- client->driver = &pcf8563_driver;
|
|
- client->adapter = adapter;
|
|
-
|
|
- strlcpy(client->name, pcf8563_driver.driver.name, I2C_NAME_SIZE);
|
|
+ if (!(pcf8563 = kzalloc(sizeof(struct pcf8563), GFP_KERNEL)))
|
|
+ return -ENOMEM;
|
|
|
|
/* Verify the chip is really an PCF8563 */
|
|
- if (kind < 0) {
|
|
- if (pcf8563_validate_client(client) < 0) {
|
|
- err = -ENODEV;
|
|
- goto exit_kfree;
|
|
- }
|
|
- }
|
|
-
|
|
- /* Inform the i2c layer */
|
|
- if ((err = i2c_attach_client(client)))
|
|
+ if (pcf8563_validate_client(client) < 0) {
|
|
+ err = -ENODEV;
|
|
goto exit_kfree;
|
|
+ }
|
|
|
|
dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
|
|
|
|
- rtc = rtc_device_register(pcf8563_driver.driver.name, &client->dev,
|
|
+ pcf8563->rtc = rtc_device_register(pcf8563_driver.driver.name, &client->dev,
|
|
&pcf8563_rtc_ops, THIS_MODULE);
|
|
|
|
- if (IS_ERR(rtc)) {
|
|
- err = PTR_ERR(rtc);
|
|
- goto exit_detach;
|
|
+ if (IS_ERR(pcf8563->rtc)) {
|
|
+ err = PTR_ERR(pcf8563->rtc);
|
|
+ goto exit_kfree;
|
|
}
|
|
|
|
- i2c_set_clientdata(client, rtc);
|
|
+ i2c_set_clientdata(client, pcf8563);
|
|
|
|
return 0;
|
|
|
|
-exit_detach:
|
|
- i2c_detach_client(client);
|
|
-
|
|
exit_kfree:
|
|
kfree(pcf8563);
|
|
|
|
-exit:
|
|
return err;
|
|
}
|
|
|
|
-static int pcf8563_detach(struct i2c_client *client)
|
|
+static int pcf8563_remove(struct i2c_client *client)
|
|
{
|
|
- struct pcf8563 *pcf8563 = container_of(client, struct pcf8563, client);
|
|
- int err;
|
|
- struct rtc_device *rtc = i2c_get_clientdata(client);
|
|
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
|
|
|
|
- if (rtc)
|
|
- rtc_device_unregister(rtc);
|
|
-
|
|
- if ((err = i2c_detach_client(client)))
|
|
- return err;
|
|
+ if (pcf8563->rtc)
|
|
+ rtc_device_unregister(pcf8563->rtc);
|
|
|
|
kfree(pcf8563);
|
|
|
|
return 0;
|
|
}
|
|
|
|
+static struct i2c_driver pcf8563_driver = {
|
|
+ .driver = {
|
|
+ .name = "rtc-pcf8563",
|
|
+ },
|
|
+ .probe = pcf8563_probe,
|
|
+ .remove = pcf8563_remove,
|
|
+};
|
|
+
|
|
static int __init pcf8563_init(void)
|
|
{
|
|
return i2c_add_driver(&pcf8563_driver);
|
|
---
|
|
drivers/rtc/rtc-x1205.c | 128 ++++++++++++++++--------------------------------
|
|
1 file changed, 43 insertions(+), 85 deletions(-)
|
|
|
|
Index: linux-2.6.24-armeb/drivers/rtc/rtc-x1205.c
|
|
===================================================================
|
|
--- linux-2.6.24-armeb.orig/drivers/rtc/rtc-x1205.c 2008-01-30 13:50:44.000000000 +1030
|
|
+++ linux-2.6.24-armeb/drivers/rtc/rtc-x1205.c 2008-01-30 13:51:35.000000000 +1030
|
|
@@ -22,20 +22,7 @@
|
|
#include <linux/rtc.h>
|
|
#include <linux/delay.h>
|
|
|
|
-#define DRV_VERSION "1.0.7"
|
|
-
|
|
-/* Addresses to scan: none. This chip is located at
|
|
- * 0x6f and uses a two bytes register addressing.
|
|
- * Two bytes need to be written to read a single register,
|
|
- * while most other chips just require one and take the second
|
|
- * one as the data to be written. To prevent corrupting
|
|
- * unknown chips, the user must explicitly set the probe parameter.
|
|
- */
|
|
-
|
|
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
|
|
-
|
|
-/* Insmod parameters */
|
|
-I2C_CLIENT_INSMOD;
|
|
+#define DRV_VERSION "1.0.8"
|
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/* offsets into CCR area */
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@@ -91,19 +78,7 @@
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#define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */
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-/* Prototypes */
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-static int x1205_attach(struct i2c_adapter *adapter);
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-static int x1205_detach(struct i2c_client *client);
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-static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
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-
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-static struct i2c_driver x1205_driver = {
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- .driver = {
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- .name = "x1205",
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- },
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- .id = I2C_DRIVERID_X1205,
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- .attach_adapter = &x1205_attach,
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- .detach_client = &x1205_detach,
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-};
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+static struct i2c_driver x1205_driver;
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/*
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* In the routines that deal directly with the x1205 hardware, we use
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@@ -497,58 +472,51 @@
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}
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static DEVICE_ATTR(dtrim, S_IRUGO, x1205_sysfs_show_dtrim, NULL);
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-static int x1205_attach(struct i2c_adapter *adapter)
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+static int x1205_sysfs_register(struct device *dev)
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+{
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+ int err;
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+
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+ err = device_create_file(dev, &dev_attr_atrim);
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+ if (err)
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+ return err;
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+
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+ err = device_create_file(dev, &dev_attr_dtrim);
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+ if (err)
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+ device_remove_file(dev, &dev_attr_atrim);
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+
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+ return err;
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+}
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+
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+static void x1205_sysfs_unregister(struct device *dev)
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{
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- return i2c_probe(adapter, &addr_data, x1205_probe);
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+ device_remove_file(dev, &dev_attr_atrim);
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+ device_remove_file(dev, &dev_attr_dtrim);
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}
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-static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
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+
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+static int x1205_probe(struct i2c_client *client)
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{
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int err = 0;
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unsigned char sr;
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- struct i2c_client *client;
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struct rtc_device *rtc;
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- dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
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+ dev_dbg(&client->dev, "%s\n", __FUNCTION__);
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- if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
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- err = -ENODEV;
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- goto exit;
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+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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+ return -ENODEV;
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}
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- if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
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- err = -ENOMEM;
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- goto exit;
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+ if (x1205_validate_client(client) < 0) {
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+ return -ENODEV;
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}
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- /* I2C client */
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- client->addr = address;
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- client->driver = &x1205_driver;
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- client->adapter = adapter;
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-
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- strlcpy(client->name, x1205_driver.driver.name, I2C_NAME_SIZE);
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-
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- /* Verify the chip is really an X1205 */
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- if (kind < 0) {
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- if (x1205_validate_client(client) < 0) {
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- err = -ENODEV;
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- goto exit_kfree;
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- }
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- }
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-
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- /* Inform the i2c layer */
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- if ((err = i2c_attach_client(client)))
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- goto exit_kfree;
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-
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dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
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rtc = rtc_device_register(x1205_driver.driver.name, &client->dev,
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&x1205_rtc_ops, THIS_MODULE);
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- if (IS_ERR(rtc)) {
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- err = PTR_ERR(rtc);
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- goto exit_detach;
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- }
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+ if (IS_ERR(rtc))
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+ return PTR_ERR(rtc);
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i2c_set_clientdata(client, rtc);
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@@ -565,45 +533,35 @@
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else
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dev_err(&client->dev, "couldn't read status\n");
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- err = device_create_file(&client->dev, &dev_attr_atrim);
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- if (err) goto exit_devreg;
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- err = device_create_file(&client->dev, &dev_attr_dtrim);
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- if (err) goto exit_atrim;
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+ err = x1205_sysfs_register(&client->dev);
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+ if (err)
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+ goto exit_devreg;
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return 0;
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-exit_atrim:
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- device_remove_file(&client->dev, &dev_attr_atrim);
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-
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exit_devreg:
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rtc_device_unregister(rtc);
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-exit_detach:
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- i2c_detach_client(client);
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-
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-exit_kfree:
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- kfree(client);
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-
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-exit:
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return err;
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}
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-static int x1205_detach(struct i2c_client *client)
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+static int x1205_remove(struct i2c_client *client)
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{
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- int err;
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struct rtc_device *rtc = i2c_get_clientdata(client);
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- if (rtc)
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- rtc_device_unregister(rtc);
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-
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- if ((err = i2c_detach_client(client)))
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- return err;
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-
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- kfree(client);
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-
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+ rtc_device_unregister(rtc);
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+ x1205_sysfs_unregister(&client->dev);
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return 0;
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}
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+static struct i2c_driver x1205_driver = {
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+ .driver = {
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+ .name = "rtc-x1205",
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+ },
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+ .probe = x1205_probe,
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+ .remove = x1205_remove,
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+};
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+
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static int __init x1205_init(void)
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{
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return i2c_add_driver(&x1205_driver);
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