Skip to content

M
meta-elphel393
Commit 2c1cd93e authored by Andrey Filippov's avatar Andrey Filippov
Browse files
Options

finalized basic register-map based support of si5338, including DT register initialization support

parent 7fcfc245
Hide whitespace changes
Inline Side-by-side
Showing with 110 additions and 30 deletions
conf/machine/boards/elphel393/elphel393.dts
View file @ 2c1cd93e
......@@ -179,6 +179,10 @@
si5338@70 {
compatible = "sil,si5338";
reg = <0x70>;
si5338,configuration_data=<
0x1ffcf0 /* just for testing: write data 0xfc with write enable mask 0xf0 to register 0x01f */
0x20a0f0 /* just for testing: write data 0xa0 with write enable mask 0xf0 to register 0x020 */
>;
};
} ;
......
recipes-kernel/linux/linux-xlnx/vsc3304.patch
View file @ 2c1cd93e
Index: git/drivers/misc/Kconfig
===================================================================
--- git.orig/drivers/misc/Kconfig 2013-11-28 23:02:27.094741664 -0700
+++ git/drivers/misc/Kconfig 2013-11-28 23:02:30.142741696 -0700
--- git.orig/drivers/misc/Kconfig 2013-11-29 17:23:40.563426999 -0700
+++ git/drivers/misc/Kconfig 2013-11-29 17:23:44.899427043 -0700
@@ -549,6 +549,19 @@
their requirements.
......@@ -24,8 +24,8 @@ Index: git/drivers/misc/Kconfig
source "drivers/misc/eeprom/Kconfig"
Index: git/drivers/misc/Makefile
===================================================================
--- git.orig/drivers/misc/Makefile 2013-11-28 23:02:27.094741664 -0700
+++ git/drivers/misc/Makefile 2013-11-28 23:02:30.142741696 -0700
--- git.orig/drivers/misc/Makefile 2013-11-29 17:23:40.563426999 -0700
+++ git/drivers/misc/Makefile 2013-11-29 17:23:44.899427043 -0700
@@ -55,3 +55,5 @@
obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
obj-$(CONFIG_SRAM) += sram.o
......@@ -35,7 +35,7 @@ Index: git/drivers/misc/Makefile
Index: git/drivers/misc/vsc330x.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/drivers/misc/vsc330x.c 2013-11-28 23:02:30.142741696 -0700
+++ git/drivers/misc/vsc330x.c 2013-11-29 17:23:44.899427043 -0700
@@ -0,0 +1,872 @@
+/*!***************************************************************************
+ *! FILE NAME : vsc330x.c
......@@ -778,7 +778,7 @@ Index: git/drivers/misc/vsc330x.c
+ if (((rc=read_reg(client, reg)))<0) return rc;
+ val=((val ^ rc) & mask)^ rc;
+ }
+ return write_reg(client, reg, rc);
+ return write_reg(client, reg, val);
+}
+
+static int write_page_with_mask(struct i2c_client *client, int page, u8 reg, u8 val , u8 mask)
......@@ -912,8 +912,8 @@ Index: git/drivers/misc/vsc330x.c
Index: git/drivers/misc/si5338.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/drivers/misc/si5338.c 2013-11-28 23:42:24.350766529 -0700
@@ -0,0 +1,305 @@
+++ git/drivers/misc/si5338.c 2013-11-29 18:25:55.975465743 -0700
@@ -0,0 +1,381 @@
+/*!***************************************************************************
+ *! FILE NAME : si5338.c
+ *! DESCRIPTION: control of the Silicon Laboratories SI5338 clock generator
......@@ -957,6 +957,12 @@ Index: git/drivers/misc/si5338.c
+#define REG5338_DEV_CONFIG2_VAL 38 /* last 2 digits of part number */
+
+
+#define FVCOMIN 2200000000L
+#define FVCOMAX 2840000000L
+
+
+
+
+static ssize_t raw_address_show (struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t raw_address_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
+static ssize_t raw_data_show (struct device *dev, struct device_attribute *attr, char *buf);
......@@ -966,7 +972,12 @@ Index: git/drivers/misc/si5338.c
+static ssize_t raw_hex_data_show (struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t raw_hex_data_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
+static ssize_t raw_hex_all_show (struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t raw_hex_adwe_show (struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t raw_hex_adwe_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
+
+static void si5338_init_of(struct i2c_client *client);
+
+static int write_adwe(struct i2c_client *client, u32 adwe);
+static int write_reg(struct i2c_client *client, u16 reg, u8 val, u8 mask);
+static int read_reg(struct i2c_client *client, u16 reg);
+
......@@ -977,6 +988,7 @@ Index: git/drivers/misc/si5338.c
+static DEVICE_ATTR(hex_address, SYSFS_PERMISSIONS, raw_hex_address_show, raw_hex_address_store);
+static DEVICE_ATTR(hex_data, SYSFS_PERMISSIONS, raw_hex_data_show, raw_hex_data_store);
+static DEVICE_ATTR(hex_all, SYSFS_PERMISSIONS & SYSFS_READONLY, raw_hex_all_show, NULL);
+static DEVICE_ATTR(hex_adwe, SYSFS_PERMISSIONS, raw_hex_adwe_show, raw_hex_adwe_store);
+
+static struct attribute *raw_dev_attrs[] = {
+ &dev_attr_address.attr,
......@@ -984,6 +996,7 @@ Index: git/drivers/misc/si5338.c
+ &dev_attr_hex_address.attr,
+ &dev_attr_hex_data.attr,
+ &dev_attr_hex_all.attr,
+ &dev_attr_hex_adwe.attr,
+ NULL
+};
+
......@@ -1000,6 +1013,7 @@ Index: git/drivers/misc/si5338.c
+struct si5338_data_t {
+ int reg_addr; /* used for raw register r/w */
+ int last_page; /* value of last page accessed (bit 0 of register 255) */
+ struct mutex lock;
+};
+
+
......@@ -1078,7 +1092,7 @@ Index: git/drivers/misc/si5338.c
+{
+ int low_addr=0,reg,data,rc,high_addr=348,len=0, count=PAGE_SIZE;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+// struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ for (reg=low_addr;reg<high_addr;reg++) if (count>10){
+ if ((reg & 0xf) ==0){
+ rc=sprintf(buf, "%03x: ",reg);
......@@ -1102,33 +1116,57 @@ Index: git/drivers/misc/si5338.c
+ }
+ return len;
+}
+/*
+ * int reg, port_mask, rc=0, len=0, count=PAGE_SIZE;
+ *
+ for (reg=0;reg<MAX_PORTS;reg++) if ((port_mask & (1<<reg)) && (count>5)) {
+ dev_dbg(dev, "name='%s' reg=0x%x, page=0x%x, ls_bit_num=0x%x, width=0x%x\n",
+ attr->attr.name, reg, page, ls_bit_num, width);
+ rc = read_page_field(client, page, reg, ls_bit_num, width);
+// rc=field_show_reg(dev, buf, page, reg, ls_bit_num, width);
+ if (rc<0) return rc;
+ rc=sprintf(buf, "%d ", rc);
+ buf+=rc;
+ len+=rc;
+ count-=rc;
+
+ }
+static ssize_t raw_hex_adwe_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf,"Write only, provide single or multiple hex values in the form [0x]AAADDWW, where AAA is register address\n" \
+ "DD - data byte and WW - write enable bits ( 1 - write, 0 - keep old)\n");
+
+}
+/*
+ * accepts single or multiple data, each [0x]AAADDWW - AAA - register address, DD - data byte, WW - write enable mask (1 - write, 0 - keep).
+ * Ignores any other characters, so same format as in dts with hex data is OK
+ */
+static ssize_t raw_hex_adwe_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ const char digits[]="0123456789";
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ int adwe,rc=0;
+ int left=count,num_bytes;
+ const char * cp;
+ mutex_lock(&clientdata->lock);
+ while ((left>0) && ((cp=strpbrk(buf,digits))) && cp[0]){
+ left -= (cp-buf);
+ buf = cp;
+ dev_dbg(dev,"left=%d", left);
+ sscanf(buf, "%x%n", &adwe,&num_bytes);
+ left-=num_bytes;
+ buf+=num_bytes;
+ dev_dbg(dev,"left=%d num_bytes=%d, adwe=0x%08x", left,num_bytes,adwe);
+ if (((rc=write_adwe(client, adwe)))<0) {
+ mutex_unlock(&clientdata->lock);
+ return rc;
+ }
+ }
+ mutex_unlock(&clientdata->lock);
+ return count;
+}
+
+static int write_adwe(struct i2c_client *client, u32 adwe)
+{
+ u8 we= adwe & 0xff;
+ u8 data= (adwe>>8) & 0xff;
+ u16 reg= (adwe>>16) & (0xff | (REG5338_PAGE_MASK << 8)); /* 0x1ff */
+ return write_reg(client, reg, data, we);
+
+
+}
+
+static int _write_single_reg(struct i2c_client *client, u8 reg, u8 val)
+{
+ struct si5338_data_t *clientdata;
+ struct si5338_data_t *clientdata = i2c_get_clientdata(client);
+ dev_dbg(&client->dev,"device write: slave=0x%x, reg=0x%x, val=0x%x\n", (int) (client->addr),reg,val);
+ if (clientdata && (reg==REG5338_PAGE)) {
+ clientdata = i2c_get_clientdata(client);
+// dev_dbg(&client->dev,"changing page: new=0x%x, was=0x%x\n",val & REG5338_PAGE_MASK,clientdata->last_page);
+ clientdata->last_page=val & REG5338_PAGE_MASK;
+ }
+ return i2c_smbus_write_byte_data(client, reg, val);
......@@ -1138,17 +1176,18 @@ Index: git/drivers/misc/si5338.c
+{
+ int rc,page;
+ struct si5338_data_t *clientdata = i2c_get_clientdata(client);
+ if (mask==0) return 0;
+ page=(reg >> 8) & REG5338_PAGE_MASK;
+ if (page != (clientdata->last_page)) { /* set page if needed */
+ if (((rc=_write_single_reg(client, REG5338_PAGE, page)))<0) return rc;
+ }
+// dev_info(&client->dev,"reg=0x%x, val=0x%x, mask=0x%x\n", (int) reg, (int) val, (int) mask);
+ dev_dbg(&client->dev,"reg=0x%x, val=0x%x, mask=0x%x\n", (int) reg, (int) val, (int) mask);
+ if (mask==0) return 0;
+ if (mask !=0xff){
+ if (((rc=read_reg(client, reg & 0xff)))<0) return rc;
+ val=((val ^ rc) & mask)^ rc;
+ }
+ return _write_single_reg(client, reg & 0xff, rc);
+ return _write_single_reg(client, reg & 0xff, val);
+}
+
+static int read_reg(struct i2c_client *client, u16 reg)
......@@ -1156,6 +1195,7 @@ Index: git/drivers/misc/si5338.c
+ int rc,page;
+ struct si5338_data_t *clientdata = i2c_get_clientdata(client);
+ page=(reg >> 8) & REG5338_PAGE_MASK;
+ dev_dbg(&client->dev,"reading i2c device : slave=0x%x, reg=0x%x page=0x%x, last_page=0x%x\n",(int) (client->addr),reg,page,clientdata->last_page);
+ if (clientdata && (reg!=REG5338_PAGE) && (page != clientdata->last_page)) { /* set page if needed */
+ if (((rc=_write_single_reg(client, REG5338_PAGE, page)))<0) return rc;
+ }
......@@ -1168,7 +1208,41 @@ Index: git/drivers/misc/si5338.c
+ return rc;
+}
+
+
+static void si5338_init_of(struct i2c_client *client)
+{
+// struct device *dev=&client->dev;
+ const __be32 * config_data;
+ struct device_node *node = client->dev.of_node;
+ int len,i,rc;
+ u16 page_reg;
+ struct si5338_setup_data {
+ u8 page;
+ u8 reg;
+ u8 data;
+ u8 mask;
+ };
+ struct si5338_setup_data setup_data;
+ __be32 * setup_data_be32= (__be32 *) &setup_data;
+ if (node) {
+ config_data = of_get_property(client->dev.of_node, "si5338,configuration_data", &len);
+ if (config_data){
+ len /= sizeof(*config_data);
+ dev_dbg(&client->dev,"Read %d values\n",len);
+ dev_info(&client->dev,"Found %d items in 'si5338,configuration_data' in the Device Tree\n",len);
+ for (i=0;i<len;i++){
+ *setup_data_be32=config_data[i];
+ page_reg=setup_data.reg+(setup_data.page<<8);
+ dev_dbg(&client->dev,"page_reg=0x%03x, data=0x%02x, mask=0x%02x \n",
+ (int) page_reg,(int)setup_data.data,(int)setup_data.mask);
+ if (((rc=write_reg(client, page_reg, setup_data.data, setup_data.mask)))<0) return rc;
+ }
+ } else {
+ dev_info(&client->dev,"'si5338,configuration_data' not found in the Device Tree\n");
+ }
+ } else {
+ dev_info(&client->dev,"Device tree data not found for %s\n",client->name);
+ }
+}
+
+static int si5338_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
......@@ -1194,6 +1268,8 @@ Index: git/drivers/misc/si5338.c
+ i2c_set_clientdata(client, clientdata);
+ if (((rc=read_reg(client, REG5338_PAGE)))<0) return rc; // will set clientdata->last_page
+ si5338_sysfs_register(&client->dev);
+ mutex_init(&clientdata->lock);
+ si5338_init_of(client);
+ return 0;
+}
+
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment