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128 lines
3.2 KiB
Diff
128 lines
3.2 KiB
Diff
From 1353cd9749377dbcc8290dab5c098deec66fb956 Mon Sep 17 00:00:00 2001
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From: Kurt Mahan <kmahan@freescale.com>
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Date: Thu, 15 May 2008 13:24:58 -0600
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Subject: [PATCH] Add RTC RV5C387A driver for MCF547x and MCF548x.
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LTIBName: m547x-8x-rtc-rv5c387a
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Signed-off-by: Kurt Mahan <kmahan@freescale.com>
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Signed-off-by: Shrek Wu <b16972@freescale.com>
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---
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drivers/rtc/rtc-rs5c372.c | 67 +++++++++++++++++++++++++++++++++++++++++---
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1 files changed, 62 insertions(+), 5 deletions(-)
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--- a/drivers/rtc/rtc-rs5c372.c
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+++ b/drivers/rtc/rtc-rs5c372.c
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@@ -15,7 +15,6 @@
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#define DRV_VERSION "0.5"
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-
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/*
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* Ricoh has a family of I2C based RTCs, which differ only slightly from
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* each other. Differences center on pinout (e.g. how many interrupts,
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@@ -60,6 +59,15 @@
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/* to read (style 1) or write registers starting at R */
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#define RS5C_ADDR(R) (((R) << 4) | 0)
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+#ifdef CONFIG_M547X_8X
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+#define DRV_NAME "rv5c387a"
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+/* i2c configuration */
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+#define RV5C387_I2C_ADDR 0x32
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+static unsigned short normal_i2c[] = {
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+ RV5C387_I2C_ADDR, I2C_CLIENT_END
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+};
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+I2C_CLIENT_INSMOD; /* defines addr_data */
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+#endif
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enum rtc_type {
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rtc_undef = 0,
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@@ -506,14 +514,14 @@ static int rs5c372_probe(struct i2c_clie
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err = -ENODEV;
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goto exit;
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}
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-
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- if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) {
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+ rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL);
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+ if (!rs5c372) {
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err = -ENOMEM;
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goto exit;
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}
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/* we read registers 0x0f then 0x00-0x0f; skip the first one */
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- rs5c372->regs=&rs5c372->buf[1];
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+ rs5c372->regs = &rs5c372->buf[1];
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rs5c372->client = client;
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i2c_set_clientdata(client, rs5c372);
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@@ -605,7 +613,7 @@ static int rs5c372_probe(struct i2c_clie
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case rtc_rv5c386: s = "rv5c386"; break;
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case rtc_rv5c387a: s = "rv5c387a"; break;
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default: s = "chip"; break;
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- }; s;}),
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+ }; s; }),
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rs5c372->time24 ? "24hr" : "am/pm"
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);
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@@ -645,12 +653,61 @@ static int rs5c372_remove(struct i2c_cli
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return 0;
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}
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+#ifdef CONFIG_M547X_8X
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+static int rv5c387_probe(struct i2c_adapter *adapter, int addr, int kind)
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+{
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+ int rc = 0;
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+ struct i2c_client *new_client = NULL;
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+
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+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
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+ rc = -ENODEV;
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+ printk(KERN_DEBUG "%s i2c_check_functionality\n", __FUNCTION__);
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+ goto failout;
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+ }
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+
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+ new_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
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+ if (new_client == NULL) {
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+ rc = -ENOMEM;
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+ printk(KERN_DEBUG "%s kzalloc new_client\n", __FUNCTION__);
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+ goto failout;
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+ }
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+
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+ new_client->addr = addr;
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+ new_client->adapter = adapter;
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+ new_client->driver = &rs5c372_driver;
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+ new_client->flags = 0;
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+ strcpy(new_client->name, DRV_NAME);
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+
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+ rc = i2c_attach_client(new_client);
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+ if (rc < 0) {
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+ printk(KERN_DEBUG "%s i2c_attach_client\n", __FUNCTION__);
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+ goto failout;
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+ }
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+
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+ rs5c372_probe(new_client);
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+ return 0;
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+failout:
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+ kfree(new_client);
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+ return rc;
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+}
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+
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+static int
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+rv5c387_attach_adapter(struct i2c_adapter *adapter)
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+{
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+ return i2c_probe(adapter, &addr_data, rv5c387_probe);
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+}
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+#endif
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+
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static struct i2c_driver rs5c372_driver = {
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.driver = {
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.name = "rtc-rs5c372",
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},
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+#ifdef CONFIG_M547X_8X
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+ .attach_adapter = &rv5c387_attach_adapter,
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+#else
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.probe = rs5c372_probe,
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.remove = rs5c372_remove,
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+#endif
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};
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static __init int rs5c372_init(void)
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