renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
Code
32953df7a6
linux-next/drivers/ptp/ptp_idt82p33.c

1111 lines
24 KiB
C
Raw Normal View History

ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
// SPDX-License-Identifier: GPL-2.0
//
// Copyright (C) 2018 Integrated Device Technology, Inc
//
#define pr_fmt(fmt) "IDT_82p33xxx: " fmt
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/timekeeping.h>
#include <linux/bitops.h>
#include "ptp_private.h"
#include "ptp_idt82p33.h"
MODULE_DESCRIPTION("Driver for IDT 82p33xxx clock devices");
MODULE_AUTHOR("IDT support-1588 <IDT-support-1588@lm.renesas.com>");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
MODULE_FIRMWARE(FW_FILENAME);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
/* Module Parameters */
ptp: idt82p33: Make two variables static Fix sparse warnings: drivers/ptp/ptp_idt82p33.c:26:5: warning: symbol 'sync_tod_timeout' was not declared. Should it be static? drivers/ptp/ptp_idt82p33.c:31:5: warning: symbol 'phase_snap_threshold' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-18 10:01:49 +08:00
static u32 sync_tod_timeout = SYNC_TOD_TIMEOUT_SEC;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
module_param(sync_tod_timeout, uint, 0);
MODULE_PARM_DESC(sync_tod_timeout,
"duration in second to keep SYNC_TOD on (set to 0 to keep it always on)");
ptp: idt82p33: Make two variables static Fix sparse warnings: drivers/ptp/ptp_idt82p33.c:26:5: warning: symbol 'sync_tod_timeout' was not declared. Should it be static? drivers/ptp/ptp_idt82p33.c:31:5: warning: symbol 'phase_snap_threshold' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-18 10:01:49 +08:00
static u32 phase_snap_threshold = SNAP_THRESHOLD_NS;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
module_param(phase_snap_threshold, uint, 0);
MODULE_PARM_DESC(phase_snap_threshold,
"threshold (150000ns by default) below which adjtime would ignore");
static void idt82p33_byte_array_to_timespec(struct timespec64 *ts,
u8 buf[TOD_BYTE_COUNT])
{
time64_t sec;
s32 nsec;
u8 i;
nsec = buf[3];
for (i = 0; i < 3; i++) {
nsec <<= 8;
nsec |= buf[2 - i];
}
sec = buf[9];
for (i = 0; i < 5; i++) {
sec <<= 8;
sec |= buf[8 - i];
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
static void idt82p33_timespec_to_byte_array(struct timespec64 const *ts,
u8 buf[TOD_BYTE_COUNT])
{
time64_t sec;
s32 nsec;
u8 i;
nsec = ts->tv_nsec;
sec = ts->tv_sec;
for (i = 0; i < 4; i++) {
buf[i] = nsec & 0xff;
nsec >>= 8;
}
for (i = 4; i < TOD_BYTE_COUNT; i++) {
buf[i] = sec & 0xff;
sec >>= 8;
}
}
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
static int idt82p33_xfer_read(struct idt82p33 *idt82p33,
unsigned char regaddr,
unsigned char *buf,
unsigned int count)
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
{
struct i2c_client *client = idt82p33->client;
struct i2c_msg msg[2];
int cnt;
msg[0].addr = client->addr;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = &regaddr;
msg[1].addr = client->addr;
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
msg[1].flags = I2C_M_RD;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
msg[1].len = count;
msg[1].buf = buf;
cnt = i2c_transfer(client->adapter, msg, 2);
if (cnt < 0) {
dev_err(&client->dev, "i2c_transfer returned %d\n", cnt);
return cnt;
} else if (cnt != 2) {
dev_err(&client->dev,
"i2c_transfer sent only %d of %d messages\n", cnt, 2);
return -EIO;
}
return 0;
}
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
static int idt82p33_xfer_write(struct idt82p33 *idt82p33,
u8 regaddr,
u8 *buf,
u16 count)
{
struct i2c_client *client = idt82p33->client;
/* we add 1 byte for device register */
u8 msg[IDT82P33_MAX_WRITE_COUNT + 1];
int err;
if (count > IDT82P33_MAX_WRITE_COUNT)
return -EINVAL;
msg[0] = regaddr;
memcpy(&msg[1], buf, count);
err = i2c_master_send(client, msg, count + 1);
if (err < 0) {
dev_err(&client->dev, "i2c_master_send returned %d\n", err);
return err;
}
return 0;
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
static int idt82p33_page_offset(struct idt82p33 *idt82p33, unsigned char val)
{
int err;
if (idt82p33->page_offset == val)
return 0;
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
err = idt82p33_xfer_write(idt82p33, PAGE_ADDR, &val, sizeof(val));
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
if (err)
dev_err(&idt82p33->client->dev,
"failed to set page offset %d\n", val);
else
idt82p33->page_offset = val;
return err;
}
static int idt82p33_rdwr(struct idt82p33 *idt82p33, unsigned int regaddr,
unsigned char *buf, unsigned int count, bool write)
{
u8 offset, page;
int err;
page = _PAGE(regaddr);
offset = _OFFSET(regaddr);
err = idt82p33_page_offset(idt82p33, page);
if (err)
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
return err;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
ptp: idt82p33: use i2c_master_send for bus write Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:08 +08:00
if (write)
return idt82p33_xfer_write(idt82p33, offset, buf, count);
return idt82p33_xfer_read(idt82p33, offset, buf, count);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
static int idt82p33_read(struct idt82p33 *idt82p33, unsigned int regaddr,
unsigned char *buf, unsigned int count)
{
return idt82p33_rdwr(idt82p33, regaddr, buf, count, false);
}
static int idt82p33_write(struct idt82p33 *idt82p33, unsigned int regaddr,
unsigned char *buf, unsigned int count)
{
return idt82p33_rdwr(idt82p33, regaddr, buf, count, true);
}
static int idt82p33_dpll_set_mode(struct idt82p33_channel *channel,
enum pll_mode mode)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
u8 dpll_mode;
int err;
if (channel->pll_mode == mode)
return 0;
err = idt82p33_read(idt82p33, channel->dpll_mode_cnfg,
&dpll_mode, sizeof(dpll_mode));
if (err)
return err;
dpll_mode &= ~(PLL_MODE_MASK << PLL_MODE_SHIFT);
dpll_mode |= (mode << PLL_MODE_SHIFT);
err = idt82p33_write(idt82p33, channel->dpll_mode_cnfg,
&dpll_mode, sizeof(dpll_mode));
if (err)
return err;
channel->pll_mode = dpll_mode;
return 0;
}
static int _idt82p33_gettime(struct idt82p33_channel *channel,
struct timespec64 *ts)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
u8 buf[TOD_BYTE_COUNT];
u8 trigger;
int err;
trigger = TOD_TRIGGER(HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG,
HW_TOD_RD_TRIG_SEL_LSB_TOD_STS);
err = idt82p33_write(idt82p33, channel->dpll_tod_trigger,
&trigger, sizeof(trigger));
if (err)
return err;
if (idt82p33->calculate_overhead_flag)
idt82p33->start_time = ktime_get_raw();
err = idt82p33_read(idt82p33, channel->dpll_tod_sts, buf, sizeof(buf));
if (err)
return err;
idt82p33_byte_array_to_timespec(ts, buf);
return 0;
}
/*
* TOD Trigger:
* Bits[7:4] Write 0x9, MSB write
* Bits[3:0] Read 0x9, LSB read
*/
static int _idt82p33_settime(struct idt82p33_channel *channel,
struct timespec64 const *ts)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
struct timespec64 local_ts = *ts;
char buf[TOD_BYTE_COUNT];
s64 dynamic_overhead_ns;
unsigned char trigger;
int err;
u8 i;
trigger = TOD_TRIGGER(HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG,
HW_TOD_RD_TRIG_SEL_LSB_TOD_STS);
err = idt82p33_write(idt82p33, channel->dpll_tod_trigger,
&trigger, sizeof(trigger));
if (err)
return err;
if (idt82p33->calculate_overhead_flag) {
dynamic_overhead_ns = ktime_to_ns(ktime_get_raw())
- ktime_to_ns(idt82p33->start_time);
timespec64_add_ns(&local_ts, dynamic_overhead_ns);
idt82p33->calculate_overhead_flag = 0;
}
idt82p33_timespec_to_byte_array(&local_ts, buf);
/*
* Store the new time value.
*/
for (i = 0; i < TOD_BYTE_COUNT; i++) {
err = idt82p33_write(idt82p33, channel->dpll_tod_cnfg + i,
&buf[i], sizeof(buf[i]));
if (err)
return err;
}
return err;
}
static int _idt82p33_adjtime(struct idt82p33_channel *channel, s64 delta_ns)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
struct timespec64 ts;
s64 now_ns;
int err;
idt82p33->calculate_overhead_flag = 1;
err = _idt82p33_gettime(channel, &ts);
if (err)
return err;
now_ns = timespec64_to_ns(&ts);
now_ns += delta_ns + idt82p33->tod_write_overhead_ns;
ts = ns_to_timespec64(now_ns);
err = _idt82p33_settime(channel, &ts);
return err;
}
static int _idt82p33_adjfine(struct idt82p33_channel *channel, long scaled_ppm)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
unsigned char buf[5] = {0};
int err, i;
s64 fcw;
if (scaled_ppm == channel->current_freq_ppb)
return 0;
/*
* Frequency Control Word unit is: 1.68 * 10^-10 ppm
*
* adjfreq:
* ppb * 10^9
* FCW = ----------
* 168
*
* adjfine:
* scaled_ppm * 5^12
* FCW = -------------
* 168 * 2^4
*/
fcw = scaled_ppm * 244140625ULL;
ptp: idt82p33: optimize _idt82p33_adjfine Use div_s64 so that the neg_adj is not needed. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-3-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:09 +08:00
fcw = div_s64(fcw, 2688);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
for (i = 0; i < 5; i++) {
buf[i] = fcw & 0xff;
fcw >>= 8;
}
err = idt82p33_dpll_set_mode(channel, PLL_MODE_DCO);
if (err)
return err;
err = idt82p33_write(idt82p33, channel->dpll_freq_cnfg,
buf, sizeof(buf));
if (err == 0)
channel->current_freq_ppb = scaled_ppm;
return err;
}
static int idt82p33_measure_one_byte_write_overhead(
struct idt82p33_channel *channel, s64 *overhead_ns)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
ktime_t start, stop;
s64 total_ns;
u8 trigger;
int err;
u8 i;
total_ns = 0;
*overhead_ns = 0;
trigger = TOD_TRIGGER(HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG,
HW_TOD_RD_TRIG_SEL_LSB_TOD_STS);
for (i = 0; i < MAX_MEASURMENT_COUNT; i++) {
start = ktime_get_raw();
err = idt82p33_write(idt82p33, channel->dpll_tod_trigger,
&trigger, sizeof(trigger));
stop = ktime_get_raw();
if (err)
return err;
total_ns += ktime_to_ns(stop) - ktime_to_ns(start);
}
*overhead_ns = div_s64(total_ns, MAX_MEASURMENT_COUNT);
return err;
}
static int idt82p33_measure_tod_write_9_byte_overhead(
struct idt82p33_channel *channel)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
u8 buf[TOD_BYTE_COUNT];
ktime_t start, stop;
s64 total_ns;
int err = 0;
u8 i, j;
total_ns = 0;
idt82p33->tod_write_overhead_ns = 0;
for (i = 0; i < MAX_MEASURMENT_COUNT; i++) {
start = ktime_get_raw();
/* Need one less byte for applicable overhead */
for (j = 0; j < (TOD_BYTE_COUNT - 1); j++) {
err = idt82p33_write(idt82p33,
channel->dpll_tod_cnfg + i,
&buf[i], sizeof(buf[i]));
if (err)
return err;
}
stop = ktime_get_raw();
total_ns += ktime_to_ns(stop) - ktime_to_ns(start);
}
idt82p33->tod_write_overhead_ns = div_s64(total_ns,
MAX_MEASURMENT_COUNT);
return err;
}
static int idt82p33_measure_settime_gettime_gap_overhead(
struct idt82p33_channel *channel, s64 *overhead_ns)
{
struct timespec64 ts1 = {0, 0};
struct timespec64 ts2;
int err;
*overhead_ns = 0;
err = _idt82p33_settime(channel, &ts1);
if (err)
return err;
err = _idt82p33_gettime(channel, &ts2);
if (!err)
*overhead_ns = timespec64_to_ns(&ts2) - timespec64_to_ns(&ts1);
return err;
}
static int idt82p33_measure_tod_write_overhead(struct idt82p33_channel *channel)
{
s64 trailing_overhead_ns, one_byte_write_ns, gap_ns;
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
idt82p33->tod_write_overhead_ns = 0;
err = idt82p33_measure_settime_gettime_gap_overhead(channel, &gap_ns);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err) {
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
return err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
err = idt82p33_measure_one_byte_write_overhead(channel,
&one_byte_write_ns);
if (err)
return err;
err = idt82p33_measure_tod_write_9_byte_overhead(channel);
if (err)
return err;
trailing_overhead_ns = gap_ns - (2 * one_byte_write_ns);
idt82p33->tod_write_overhead_ns -= trailing_overhead_ns;
return err;
}
static int idt82p33_check_and_set_masks(struct idt82p33 *idt82p33,
u8 page,
u8 offset,
u8 val)
{
int err = 0;
if (page == PLLMASK_ADDR_HI && offset == PLLMASK_ADDR_LO) {
if ((val & 0xfc) || !(val & 0x3)) {
dev_err(&idt82p33->client->dev,
"Invalid PLL mask 0x%hhx\n", val);
err = -EINVAL;
} else {
idt82p33->pll_mask = val;
}
} else if (page == PLL0_OUTMASK_ADDR_HI &&
offset == PLL0_OUTMASK_ADDR_LO) {
idt82p33->channel[0].output_mask = val;
} else if (page == PLL1_OUTMASK_ADDR_HI &&
offset == PLL1_OUTMASK_ADDR_LO) {
idt82p33->channel[1].output_mask = val;
}
return err;
}
static void idt82p33_display_masks(struct idt82p33 *idt82p33)
{
u8 mask, i;
dev_info(&idt82p33->client->dev,
"pllmask = 0x%02x\n", idt82p33->pll_mask);
for (i = 0; i < MAX_PHC_PLL; i++) {
mask = 1 << i;
if (mask & idt82p33->pll_mask)
dev_info(&idt82p33->client->dev,
"PLL%d output_mask = 0x%04x\n",
i, idt82p33->channel[i].output_mask);
}
}
static int idt82p33_sync_tod(struct idt82p33_channel *channel, bool enable)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
u8 sync_cnfg;
int err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
/* Turn it off after sync_tod_timeout seconds */
if (enable && sync_tod_timeout)
ptp_schedule_worker(channel->ptp_clock,
sync_tod_timeout * HZ);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
err = idt82p33_read(idt82p33, channel->dpll_sync_cnfg,
&sync_cnfg, sizeof(sync_cnfg));
if (err)
return err;
sync_cnfg &= ~SYNC_TOD;
if (enable)
sync_cnfg |= SYNC_TOD;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
return idt82p33_write(idt82p33, channel->dpll_sync_cnfg,
&sync_cnfg, sizeof(sync_cnfg));
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
static long idt82p33_sync_tod_work_handler(struct ptp_clock_info *ptp)
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
{
struct idt82p33_channel *channel =
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
container_of(ptp, struct idt82p33_channel, caps);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
struct idt82p33 *idt82p33 = channel->idt82p33;
mutex_lock(&idt82p33->reg_lock);
(void)idt82p33_sync_tod(channel, false);
mutex_unlock(&idt82p33->reg_lock);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
/* Return a negative value here to not reschedule */
return -1;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
static int idt82p33_output_enable(struct idt82p33_channel *channel,
bool enable, unsigned int outn)
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
{
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
u8 val;
err = idt82p33_read(idt82p33, OUT_MUX_CNFG(outn), &val, sizeof(val));
if (err)
return err;
if (enable)
val &= ~SQUELCH_ENABLE;
else
val |= SQUELCH_ENABLE;
return idt82p33_write(idt82p33, OUT_MUX_CNFG(outn), &val, sizeof(val));
}
static int idt82p33_output_mask_enable(struct idt82p33_channel *channel,
bool enable)
{
u16 mask;
int err;
u8 outn;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mask = channel->output_mask;
outn = 0;
while (mask) {
if (mask & 0x1) {
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
err = idt82p33_output_enable(channel, enable, outn);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
if (err)
return err;
}
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mask >>= 0x1;
outn++;
}
return 0;
}
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
static int idt82p33_perout_enable(struct idt82p33_channel *channel,
bool enable,
struct ptp_perout_request *perout)
{
unsigned int flags = perout->flags;
/* Enable/disable output based on output_mask */
if (flags == PEROUT_ENABLE_OUTPUT_MASK)
return idt82p33_output_mask_enable(channel, enable);
/* Enable/disable individual output instead */
return idt82p33_output_enable(channel, enable, perout->index);
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
static int idt82p33_enable_tod(struct idt82p33_channel *channel)
{
struct idt82p33 *idt82p33 = channel->idt82p33;
struct timespec64 ts = {0, 0};
int err;
u8 val;
val = 0;
err = idt82p33_write(idt82p33, channel->dpll_input_mode_cnfg,
&val, sizeof(val));
if (err)
return err;
err = idt82p33_measure_tod_write_overhead(channel);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err) {
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
return err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
err = _idt82p33_settime(channel, &ts);
if (err)
return err;
return idt82p33_sync_tod(channel, true);
}
static void idt82p33_ptp_clock_unregister_all(struct idt82p33 *idt82p33)
{
struct idt82p33_channel *channel;
u8 i;
for (i = 0; i < MAX_PHC_PLL; i++) {
channel = &idt82p33->channel[i];
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (channel->ptp_clock)
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
ptp_clock_unregister(channel->ptp_clock);
}
}
static int idt82p33_enable(struct ptp_clock_info *ptp,
struct ptp_clock_request *rq, int on)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
err = -EOPNOTSUPP;
mutex_lock(&idt82p33->reg_lock);
if (rq->type == PTP_CLK_REQ_PEROUT) {
if (!on)
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
err = idt82p33_perout_enable(channel, false,
&rq->perout);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
/* Only accept a 1-PPS aligned to the second. */
else if (rq->perout.start.nsec || rq->perout.period.sec != 1 ||
rq->perout.period.nsec) {
err = -ERANGE;
} else
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
err = idt82p33_perout_enable(channel, true,
&rq->perout);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
mutex_unlock(&idt82p33->reg_lock);
return err;
}
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
static int idt82p33_adjwritephase(struct ptp_clock_info *ptp, s32 offset_ns)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
s64 offset_regval, offset_fs;
u8 val[4] = {0};
int err;
offset_fs = (s64)(-offset_ns) * 1000000;
if (offset_fs > WRITE_PHASE_OFFSET_LIMIT)
offset_fs = WRITE_PHASE_OFFSET_LIMIT;
else if (offset_fs < -WRITE_PHASE_OFFSET_LIMIT)
offset_fs = -WRITE_PHASE_OFFSET_LIMIT;
/* Convert from phaseoffset_fs to register value */
offset_regval = div_s64(offset_fs * 1000, IDT_T0DPLL_PHASE_RESOL);
val[0] = offset_regval & 0xFF;
val[1] = (offset_regval >> 8) & 0xFF;
val[2] = (offset_regval >> 16) & 0xFF;
val[3] = (offset_regval >> 24) & 0x1F;
val[3] |= PH_OFFSET_EN;
mutex_lock(&idt82p33->reg_lock);
err = idt82p33_dpll_set_mode(channel, PLL_MODE_WPH);
if (err) {
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
goto out;
}
err = idt82p33_write(idt82p33, channel->dpll_phase_cnfg, val,
sizeof(val));
out:
mutex_unlock(&idt82p33->reg_lock);
return err;
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
static int idt82p33_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
err = _idt82p33_adjfine(channel, scaled_ppm);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err)
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mutex_unlock(&idt82p33->reg_lock);
return err;
}
static int idt82p33_adjtime(struct ptp_clock_info *ptp, s64 delta_ns)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
if (abs(delta_ns) < phase_snap_threshold) {
mutex_unlock(&idt82p33->reg_lock);
return 0;
}
err = _idt82p33_adjtime(channel, delta_ns);
if (err) {
mutex_unlock(&idt82p33->reg_lock);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
dev_err(&idt82p33->client->dev,
"Adjtime failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
return err;
}
err = idt82p33_sync_tod(channel, true);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err)
dev_err(&idt82p33->client->dev,
"Sync_tod failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mutex_unlock(&idt82p33->reg_lock);
return err;
}
static int idt82p33_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
err = _idt82p33_gettime(channel, ts);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err)
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mutex_unlock(&idt82p33->reg_lock);
return err;
}
static int idt82p33_settime(struct ptp_clock_info *ptp,
const struct timespec64 *ts)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
err = _idt82p33_settime(channel, ts);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err)
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
mutex_unlock(&idt82p33->reg_lock);
return err;
}
static int idt82p33_channel_init(struct idt82p33_channel *channel, int index)
{
switch (index) {
case 0:
channel->dpll_tod_cnfg = DPLL1_TOD_CNFG;
channel->dpll_tod_trigger = DPLL1_TOD_TRIGGER;
channel->dpll_tod_sts = DPLL1_TOD_STS;
channel->dpll_mode_cnfg = DPLL1_OPERATING_MODE_CNFG;
channel->dpll_freq_cnfg = DPLL1_HOLDOVER_FREQ_CNFG;
channel->dpll_phase_cnfg = DPLL1_PHASE_OFFSET_CNFG;
channel->dpll_sync_cnfg = DPLL1_SYNC_EDGE_CNFG;
channel->dpll_input_mode_cnfg = DPLL1_INPUT_MODE_CNFG;
break;
case 1:
channel->dpll_tod_cnfg = DPLL2_TOD_CNFG;
channel->dpll_tod_trigger = DPLL2_TOD_TRIGGER;
channel->dpll_tod_sts = DPLL2_TOD_STS;
channel->dpll_mode_cnfg = DPLL2_OPERATING_MODE_CNFG;
channel->dpll_freq_cnfg = DPLL2_HOLDOVER_FREQ_CNFG;
channel->dpll_phase_cnfg = DPLL2_PHASE_OFFSET_CNFG;
channel->dpll_sync_cnfg = DPLL2_SYNC_EDGE_CNFG;
channel->dpll_input_mode_cnfg = DPLL2_INPUT_MODE_CNFG;
break;
default:
return -EINVAL;
}
channel->current_freq_ppb = 0;
return 0;
}
static void idt82p33_caps_init(struct ptp_clock_info *caps)
{
caps->owner = THIS_MODULE;
caps->max_adj = 92000;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
caps->n_per_out = 11;
caps->adjphase = idt82p33_adjwritephase;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
caps->adjfine = idt82p33_adjfine;
caps->adjtime = idt82p33_adjtime;
caps->gettime64 = idt82p33_gettime;
caps->settime64 = idt82p33_settime;
caps->enable = idt82p33_enable;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
caps->do_aux_work = idt82p33_sync_tod_work_handler;
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
static int idt82p33_enable_channel(struct idt82p33 *idt82p33, u32 index)
{
struct idt82p33_channel *channel;
int err;
if (!(index < MAX_PHC_PLL))
return -EINVAL;
channel = &idt82p33->channel[index];
err = idt82p33_channel_init(channel, index);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err) {
dev_err(&idt82p33->client->dev,
"Channel_init failed in %s with err %d!\n",
__func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
return err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
channel->idt82p33 = idt82p33;
idt82p33_caps_init(&channel->caps);
snprintf(channel->caps.name, sizeof(channel->caps.name),
"IDT 82P33 PLL%u", index);
channel->ptp_clock = ptp_clock_register(&channel->caps, NULL);
if (IS_ERR(channel->ptp_clock)) {
err = PTR_ERR(channel->ptp_clock);
channel->ptp_clock = NULL;
return err;
}
if (!channel->ptp_clock)
return -ENOTSUPP;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
err = idt82p33_dpll_set_mode(channel, PLL_MODE_DCO);
if (err) {
dev_err(&idt82p33->client->dev,
"Dpll_set_mode failed in %s with err %d!\n",
__func__, err);
return err;
}
err = idt82p33_enable_tod(channel);
if (err) {
dev_err(&idt82p33->client->dev,
"Enable_tod failed in %s with err %d!\n",
__func__, err);
return err;
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
dev_info(&idt82p33->client->dev, "PLL%d registered as ptp%d\n",
index, channel->ptp_clock->index);
return 0;
}
static int idt82p33_load_firmware(struct idt82p33 *idt82p33)
{
const struct firmware *fw;
struct idt82p33_fwrc *rec;
u8 loaddr, page, val;
int err;
s32 len;
dev_dbg(&idt82p33->client->dev,
"requesting firmware '%s'\n", FW_FILENAME);
err = request_firmware(&fw, FW_FILENAME, &idt82p33->client->dev);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err) {
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
return err;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
dev_dbg(&idt82p33->client->dev, "firmware size %zu bytes\n", fw->size);
rec = (struct idt82p33_fwrc *) fw->data;
for (len = fw->size; len > 0; len -= sizeof(*rec)) {
if (rec->reserved) {
dev_err(&idt82p33->client->dev,
"bad firmware, reserved field non-zero\n");
err = -EINVAL;
} else {
val = rec->value;
loaddr = rec->loaddr;
page = rec->hiaddr;
rec++;
err = idt82p33_check_and_set_masks(idt82p33, page,
loaddr, val);
}
if (err == 0) {
/* maximum 8 pages */
if (page >= PAGE_NUM)
continue;
/* Page size 128, last 4 bytes of page skipped */
if (((loaddr > 0x7b) && (loaddr <= 0x7f))
ptp: idt82p33: remove unnecessary comparison The type of loaddr is u8 which is always '<=' 0xff, so the loaddr <= 0xff is always true, we can remove this comparison. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-24 16:03:48 +08:00
|| loaddr > 0xfb)
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
continue;
err = idt82p33_write(idt82p33, _ADDR(page, loaddr),
&val, sizeof(val));
}
if (err)
goto out;
}
idt82p33_display_masks(idt82p33);
out:
release_firmware(fw);
return err;
}
static int idt82p33_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct idt82p33 *idt82p33;
int err;
u8 i;
(void)id;
idt82p33 = devm_kzalloc(&client->dev,
sizeof(struct idt82p33), GFP_KERNEL);
if (!idt82p33)
return -ENOMEM;
mutex_init(&idt82p33->reg_lock);
idt82p33->client = client;
idt82p33->page_offset = 0xff;
idt82p33->tod_write_overhead_ns = 0;
idt82p33->calculate_overhead_flag = 0;
idt82p33->pll_mask = DEFAULT_PLL_MASK;
idt82p33->channel[0].output_mask = DEFAULT_OUTPUT_MASK_PLL0;
idt82p33->channel[1].output_mask = DEFAULT_OUTPUT_MASK_PLL1;
mutex_lock(&idt82p33->reg_lock);
err = idt82p33_load_firmware(idt82p33);
if (err)
dev_warn(&idt82p33->client->dev,
"loading firmware failed with %d\n", err);
if (idt82p33->pll_mask) {
for (i = 0; i < MAX_PHC_PLL; i++) {
if (idt82p33->pll_mask & (1 << i)) {
err = idt82p33_enable_channel(idt82p33, i);
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
if (err) {
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n",
__func__, err);
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
break;
ptp: idt82p33: add adjphase support Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 11:52:07 +08:00
}
ptp: Add a ptp clock driver for IDT 82P33 SMU. The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-22 04:03:51 +08:00
}
}
} else {
dev_err(&idt82p33->client->dev,
"no PLLs flagged as PHCs, nothing to do\n");
err = -ENODEV;
}
mutex_unlock(&idt82p33->reg_lock);
if (err) {
idt82p33_ptp_clock_unregister_all(idt82p33);
return err;
}
i2c_set_clientdata(client, idt82p33);
return 0;
}
static int idt82p33_remove(struct i2c_client *client)
{
struct idt82p33 *idt82p33 = i2c_get_clientdata(client);
idt82p33_ptp_clock_unregister_all(idt82p33);
mutex_destroy(&idt82p33->reg_lock);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id idt82p33_dt_id[] = {
{ .compatible = "idt,82p33810" },
{ .compatible = "idt,82p33813" },
{ .compatible = "idt,82p33814" },
{ .compatible = "idt,82p33831" },
{ .compatible = "idt,82p33910" },
{ .compatible = "idt,82p33913" },
{ .compatible = "idt,82p33914" },
{ .compatible = "idt,82p33931" },
{},
};
MODULE_DEVICE_TABLE(of, idt82p33_dt_id);
#endif
static const struct i2c_device_id idt82p33_i2c_id[] = {
{ "idt82p33810", },
{ "idt82p33813", },
{ "idt82p33814", },
{ "idt82p33831", },
{ "idt82p33910", },
{ "idt82p33913", },
{ "idt82p33914", },
{ "idt82p33931", },
{},
};
MODULE_DEVICE_TABLE(i2c, idt82p33_i2c_id);
static struct i2c_driver idt82p33_driver = {
.driver = {
.of_match_table = of_match_ptr(idt82p33_dt_id),
.name = "idt82p33",
},
.probe = idt82p33_probe,
.remove = idt82p33_remove,
.id_table = idt82p33_i2c_id,
};
module_i2c_driver(idt82p33_driver);
Copy Permalink