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meta-elphel393
Commit 7fcfc245 authored by Andrey Filippov's avatar Andrey Filippov
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Started driver for SI5338

parent 1de86cbf
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Showing with 331 additions and 9 deletions
conf/machine/boards/common/elphel393_defconfig_3.10.cfg
View file @ 7fcfc245
......@@ -876,6 +876,7 @@ CONFIG_SRAM=y
# CONFIG_C2PORT is not set
##
CONFIG_VSC330X=y
CONFIG_SI5338=y
#
# EEPROM support
......
conf/machine/boards/elphel393/elphel393.dts
View file @ 7fcfc245
......@@ -176,6 +176,10 @@
0xff750001 /* un-freeze configuration to apply connection modifications */
>;
};
si5338@70 {
compatible = "sil,si5338";
reg = <0x70>;
};
} ;
ps7_gpio_0: ps7-gpio@e000a000 {
......
recipes-kernel/linux/linux-xlnx/vsc3304.patch
View file @ 7fcfc245
Index: git/drivers/misc/Kconfig
===================================================================
--- git.orig/drivers/misc/Kconfig 2013-11-28 00:49:54.229912368 -0700
+++ git/drivers/misc/Kconfig 2013-11-28 00:49:57.261912399 -0700
@@ -549,6 +549,13 @@
--- 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
@@ -549,6 +549,19 @@
their requirements.
If unsure, say N
......@@ -13,22 +13,29 @@ Index: git/drivers/misc/Kconfig
+ To compile this driver as a module, choose M here: the
+ module will be called vsc330x.
+
+config SI5338
+ tristate "Support Silicon Laboratories SI5338 Quad Clock Generator"
+ help
+ Say Y here if you have a SI5338 cQuad Clock Generator IC on the I2C bus.
+ To compile this driver as a module, choose M here: the
+ module will be called si5338.
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
Index: git/drivers/misc/Makefile
===================================================================
--- git.orig/drivers/misc/Makefile 2013-11-28 00:49:54.233912368 -0700
+++ git/drivers/misc/Makefile 2013-11-28 00:49:57.261912399 -0700
@@ -55,3 +55,4 @@
--- 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
@@ -55,3 +55,5 @@
obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
obj-$(CONFIG_SRAM) += sram.o
obj-$(CONFIG_XILINX_TRAFGEN) += xilinx_trafgen.o
+obj-$(CONFIG_VSC330X) += vsc330x.o
+obj-$(CONFIG_SI5338) += si5338.o
Index: git/drivers/misc/vsc330x.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/drivers/misc/vsc330x.c 2013-11-28 00:56:30.913916483 -0700
+++ git/drivers/misc/vsc330x.c 2013-11-28 23:02:30.142741696 -0700
@@ -0,0 +1,872 @@
+/*!***************************************************************************
+ *! FILE NAME : vsc330x.c
......@@ -767,7 +774,7 @@ Index: git/drivers/misc/vsc330x.c
+{
+ int rc;
+ dev_dbg(&client->dev,"reg=0x%x, val=0x%x, mask=0x%x\n", (int) reg, (int) val, (int) mask);
+ if (val !=0xff){
+ if (mask !=0xff){
+ if (((rc=read_reg(client, reg)))<0) return rc;
+ val=((val ^ rc) & mask)^ rc;
+ }
......@@ -902,3 +909,313 @@ Index: git/drivers/misc/vsc330x.c
+MODULE_ALIAS("i2c:vsc330x");
+
+
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 @@
+/*!***************************************************************************
+ *! FILE NAME : si5338.c
+ *! DESCRIPTION: control of the Silicon Laboratories SI5338 clock generator
+ *! Copyright (C) 2013 Elphel, Inc.
+ *! -----------------------------------------------------------------------------**
+ *!
+ *! This program is free software: you can redistribute it and/or modify
+ *! it under the terms of the GNU General Public License as published by
+ *! the Free Software Foundation, either version 3 of the License, or
+ *! (at your option) any later version.
+ *!
+ *! This program is distributed in the hope that it will be useful,
+ *! but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *! GNU General Public License for more details.
+ *!
+ *! You should have received a copy of the GNU General Public License
+ *! along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/of.h>
+
+#define DRV_VERSION "1.0"
+#define SYSFS_PERMISSIONS 0644 /* default permissions for sysfs files */
+#define SYSFS_READONLY 0444
+#define SYSFS_WRITEONLY 0222
+
+
+
+#define REG5338_PAGE 255
+#define REG5338_PAGE_MASK 1
+#define REG5338_DEV_CONFIG2 2
+#define REG5338_DEV_CONFIG2_MASK 0x3f
+#define REG5338_DEV_CONFIG2_VAL 38 /* last 2 digits of part number */
+
+
+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);
+static ssize_t raw_data_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
+static ssize_t raw_hex_address_show (struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t raw_hex_address_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
+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 int write_reg(struct i2c_client *client, u16 reg, u8 val, u8 mask);
+static int read_reg(struct i2c_client *client, u16 reg);
+
+
+/* raw access to i2c registers, need to set address (9 bits) first, then r/w data */
+static DEVICE_ATTR(address, SYSFS_PERMISSIONS, raw_address_show, raw_address_store);
+static DEVICE_ATTR(data, SYSFS_PERMISSIONS, raw_data_show, raw_data_store);
+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 struct attribute *raw_dev_attrs[] = {
+ &dev_attr_address.attr,
+ &dev_attr_data.attr,
+ &dev_attr_hex_address.attr,
+ &dev_attr_hex_data.attr,
+ &dev_attr_hex_all.attr,
+ NULL
+};
+
+static const struct attribute_group dev_attr_raw_group = {
+ .attrs = raw_dev_attrs,
+ .name = "raw",
+};
+
+static const struct i2c_device_id si5338_id[] = {
+ { "si5338", 0 },
+ { }
+};
+
+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) */
+};
+
+
+static int si5338_sysfs_register(struct device *dev)
+{
+// struct i2c_client *client = to_i2c_client(dev);
+// struct vsc330x_data_t *clientdata = i2c_get_clientdata(client);
+ int retval=0;
+ if (&dev->kobj) {
+ if (((retval = sysfs_create_group(&dev->kobj, &dev_attr_raw_group)))<0) return retval;
+ }
+ return retval;
+}
+
+
+
+static ssize_t raw_address_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct si5338_data_t *clientdata=i2c_get_clientdata(to_i2c_client(dev));
+ return sprintf(buf, "%d\n",clientdata->reg_addr);
+}
+static ssize_t raw_address_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct si5338_data_t *clientdata=i2c_get_clientdata(to_i2c_client(dev));
+ sscanf(buf, "%du", &clientdata->reg_addr);
+ return count;
+}
+
+static ssize_t raw_data_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ int data= read_reg(client, clientdata->reg_addr);
+ return sprintf(buf, "%d\n",data);
+}
+static ssize_t raw_data_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ int data;
+ sscanf(buf, "%du", &data);
+ write_reg(client, clientdata->reg_addr, data, 0xff); /* write all register, it is up to user to do R-mod-W */
+ return count;
+}
+
+static ssize_t raw_hex_address_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct si5338_data_t *clientdata=i2c_get_clientdata(to_i2c_client(dev));
+ return sprintf(buf, "0x%03x\n",clientdata->reg_addr);
+}
+static ssize_t raw_hex_address_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct si5338_data_t *clientdata=i2c_get_clientdata(to_i2c_client(dev));
+ sscanf(buf, "%x", &clientdata->reg_addr);
+ return count;
+}
+
+static ssize_t raw_hex_data_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ int data= read_reg(client, clientdata->reg_addr);
+ return sprintf(buf, "0x%02x\n",data);
+}
+static ssize_t raw_hex_data_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct si5338_data_t *clientdata= i2c_get_clientdata(client);
+ int data;
+ sscanf(buf, "%x", &data);
+ write_reg(client, clientdata->reg_addr, data, 0xff); /* write all register, it is up to user to do R-mod-W */
+ return count;
+}
+
+static ssize_t raw_hex_all_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ 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);
+ for (reg=low_addr;reg<high_addr;reg++) if (count>10){
+ if ((reg & 0xf) ==0){
+ rc=sprintf(buf, "%03x: ",reg);
+ buf+=rc;
+ len+=rc;
+ count-=rc;
+ }
+ if (((data= read_reg(client, reg)))<0) return data;
+ rc=sprintf(buf, "%02x",data);
+ buf+=rc;
+ len+=rc;
+ count-=rc;
+ if (((reg & 0xf) == 0xf) || (reg==(high_addr-1))){
+ rc=sprintf(buf, "\n");
+ } else {
+ rc=sprintf(buf, " ");
+ }
+ buf+=rc;
+ len+=rc;
+ count-=rc;
+ }
+ 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 int _write_single_reg(struct i2c_client *client, u8 reg, u8 val)
+{
+ struct si5338_data_t *clientdata;
+ 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);
+ clientdata->last_page=val & REG5338_PAGE_MASK;
+ }
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int write_reg(struct i2c_client *client, u16 reg, u8 val, u8 mask)
+{
+ int rc,page;
+ struct si5338_data_t *clientdata = i2c_get_clientdata(client);
+ 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_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);
+}
+
+static int read_reg(struct i2c_client *client, u16 reg)
+{
+ int rc,page;
+ struct si5338_data_t *clientdata = i2c_get_clientdata(client);
+ page=(reg >> 8) & REG5338_PAGE_MASK;
+ 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;
+ }
+ rc= i2c_smbus_read_byte_data(client, reg & 0xff);
+ dev_dbg(&client->dev,"reading i2c device : slave=0x%x, reg=0x%x -> 0x%x\n",(int) (client->addr),reg,rc);
+ if (rc<0) return rc;
+ if (clientdata && (reg==REG5338_PAGE)) {
+ clientdata->last_page= rc & REG5338_PAGE_MASK;
+ }
+ return rc;
+}
+
+
+
+static int si5338_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int rc=0;
+ struct si5338_data_t *clientdata = NULL;
+ /* initialize i2c ... */
+//#define REG5338_DEV_CONFIG2 2
+//#define REG5338_DEV_CONFIG2_MASK 0x3f
+//#define REG5338_DEV_CONFIG2_VAL 38 /* last 2 digits of part number */
+ if (((rc=_write_single_reg(client, REG5338_PAGE,0)))<0) return rc; // did not respond
+ if (((rc=read_reg(client, REG5338_DEV_CONFIG2)))<0) return rc; // did not respond
+ if ((rc & REG5338_DEV_CONFIG2_MASK)!= REG5338_DEV_CONFIG2_VAL){
+ dev_info(&client->dev,
+ "Chip returned unexpected value from reg %d: %d, expected %d. It is not %s\n",
+ REG5338_DEV_CONFIG2,rc, REG5338_DEV_CONFIG2_VAL,id->name);
+ return -EIO;
+ }
+
+ dev_info(&client->dev,
+ "Chip %s is found, driver version %s\n", id->name, DRV_VERSION);
+ clientdata = devm_kzalloc(&client->dev, sizeof(*clientdata), GFP_KERNEL);
+ 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);
+ return 0;
+}
+
+
+static int si5338_i2c_remove(struct i2c_client *client)
+{
+ return 0;
+}
+
+static struct i2c_driver si5338_i2c_driver = {
+ .driver = {
+ .name = "si5338",
+ .owner = THIS_MODULE,
+ },
+ .probe = si5338_i2c_probe,
+ .remove = si5338_i2c_remove,
+ .id_table = si5338_id,
+};
+
+module_i2c_driver(si5338_i2c_driver);
+MODULE_DEVICE_TABLE(i2c, si5338_id);
+MODULE_AUTHOR("Andrey Filippov <andrey@elphel.com>");
+MODULE_DESCRIPTION("SI5338 I2C bus driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("i2c:si5338");
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