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ptp: idt82p33: use rsmu driver to access i2c/spi bus 

rsmu (Renesas Synchronization Management Unit ) driver is located in
drivers/mfd and responsible for creating multiple devices including
idt82p33 phc, which will then use the exposed regmap and mutex
handle to access i2c/spi bus.

Signed-off-by: Min Li <min.li.xe@renesas.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/1646748651-16811-1-git-send-email-min.li.xe@renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Min Li 2022-03-08 09:10:51 -05:00 committed by Jakub Kicinski
parent e18058ea99
commit 013a3e7c79
3 changed files with 144 additions and 384 deletions
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348
drivers/ptp/ptp_idt82p33.c
View File

@ -6,13 +6,17 @@
#define pr_fmt(fmt) "IDT_82p33xxx: " fmt
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/timekeeping.h>
#include <linux/bitops.h>
#include <linux/of.h>
#include <linux/mfd/rsmu.h>
#include <linux/mfd/idt82p33_reg.h>
#include "ptp_private.h"
#include "ptp_idt82p33.h"
@ -24,15 +28,25 @@ MODULE_LICENSE("GPL");
MODULE_FIRMWARE(FW_FILENAME);
/* Module Parameters */
static u32 sync_tod_timeout = SYNC_TOD_TIMEOUT_SEC;
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)");
static u32 phase_snap_threshold = SNAP_THRESHOLD_NS;
module_param(phase_snap_threshold, uint, 0);
MODULE_PARM_DESC(phase_snap_threshold,
"threshold (150000ns by default) below which adjtime would ignore");
"threshold (10000ns by default) below which adjtime would use double dco");
static char *firmware;
module_param(firmware, charp, 0);
static inline int idt82p33_read(struct idt82p33 *idt82p33, u16 regaddr,
u8 *buf, u16 count)
{
return regmap_bulk_read(idt82p33->regmap, regaddr, buf, count);
}
static inline int idt82p33_write(struct idt82p33 *idt82p33, u16 regaddr,
u8 *buf, u16 count)
{
return regmap_bulk_write(idt82p33->regmap, regaddr, buf, count);
}
static void idt82p33_byte_array_to_timespec(struct timespec64 *ts,
u8 buf[TOD_BYTE_COUNT])
@ -78,110 +92,6 @@ static void idt82p33_timespec_to_byte_array(struct timespec64 const *ts,
}
}
static int idt82p33_xfer_read(struct idt82p33 *idt82p33,
unsigned char regaddr,
unsigned char *buf,
unsigned int count)
{
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;
msg[1].flags = I2C_M_RD;
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;
}
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;
}
static int idt82p33_page_offset(struct idt82p33 *idt82p33, unsigned char val)
{
int err;
if (idt82p33->page_offset == val)
return 0;
err = idt82p33_xfer_write(idt82p33, PAGE_ADDR, &val, sizeof(val));
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)
return err;
if (write)
return idt82p33_xfer_write(idt82p33, offset, buf, count);
return idt82p33_xfer_read(idt82p33, offset, buf, count);
}
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)
{
@ -206,7 +116,7 @@ static int idt82p33_dpll_set_mode(struct idt82p33_channel *channel,
if (err)
return err;
channel->pll_mode = dpll_mode;
channel->pll_mode = mode;
return 0;
}
@ -467,7 +377,7 @@ static int idt82p33_measure_tod_write_overhead(struct idt82p33_channel *channel)
err = idt82p33_measure_settime_gettime_gap_overhead(channel, &gap_ns);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
@ -499,8 +409,8 @@ static int idt82p33_check_and_set_masks(struct idt82p33 *idt82p33,
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);
dev_err(idt82p33->dev,
"Invalid PLL mask 0x%x\n", val);
err = -EINVAL;
} else {
idt82p33->pll_mask = val;
@ -520,14 +430,14 @@ static void idt82p33_display_masks(struct idt82p33 *idt82p33)
{
u8 mask, i;
dev_info(&idt82p33->client->dev,
dev_info(idt82p33->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,
dev_info(idt82p33->dev,
"PLL%d output_mask = 0x%04x\n",
i, idt82p33->channel[i].output_mask);
}
@ -539,11 +449,6 @@ static int idt82p33_sync_tod(struct idt82p33_channel *channel, bool enable)
u8 sync_cnfg;
int err;
/* Turn it off after sync_tod_timeout seconds */
if (enable && sync_tod_timeout)
ptp_schedule_worker(channel->ptp_clock,
sync_tod_timeout * HZ);
err = idt82p33_read(idt82p33, channel->dpll_sync_cnfg,
&sync_cnfg, sizeof(sync_cnfg));
if (err)
@ -557,22 +462,6 @@ static int idt82p33_sync_tod(struct idt82p33_channel *channel, bool enable)
&sync_cnfg, sizeof(sync_cnfg));
}
static long idt82p33_sync_tod_work_handler(struct ptp_clock_info *ptp)
{
struct idt82p33_channel *channel =
container_of(ptp, struct idt82p33_channel, caps);
struct idt82p33 *idt82p33 = channel->idt82p33;
mutex_lock(&idt82p33->reg_lock);
(void)idt82p33_sync_tod(channel, false);
mutex_unlock(&idt82p33->reg_lock);
/* Return a negative value here to not reschedule */
return -1;
}
static int idt82p33_output_enable(struct idt82p33_channel *channel,
bool enable, unsigned int outn)
{
@ -634,18 +523,11 @@ 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);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
@ -673,16 +555,14 @@ static void idt82p33_ptp_clock_unregister_all(struct idt82p33 *idt82p33)
}
static int idt82p33_enable(struct ptp_clock_info *ptp,
struct ptp_clock_request *rq, int on)
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;
int err = -EOPNOTSUPP;
err = -EOPNOTSUPP;
mutex_lock(&idt82p33->reg_lock);
mutex_lock(idt82p33->lock);
if (rq->type == PTP_CLK_REQ_PEROUT) {
if (!on)
@ -690,15 +570,18 @@ static int idt82p33_enable(struct ptp_clock_info *ptp,
&rq->perout);
/* Only accept a 1-PPS aligned to the second. */
else if (rq->perout.start.nsec || rq->perout.period.sec != 1 ||
rq->perout.period.nsec) {
rq->perout.period.nsec)
err = -ERANGE;
} else
else
err = idt82p33_perout_enable(channel, true,
&rq->perout);
}
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
if (err)
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
@ -727,11 +610,11 @@ static int idt82p33_adjwritephase(struct ptp_clock_info *ptp, s32 offset_ns)
val[3] = (offset_regval >> 24) & 0x1F;
val[3] |= PH_OFFSET_EN;
mutex_lock(&idt82p33->reg_lock);
mutex_lock(idt82p33->lock);
err = idt82p33_dpll_set_mode(channel, PLL_MODE_WPH);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
goto out;
}
@ -740,7 +623,7 @@ static int idt82p33_adjwritephase(struct ptp_clock_info *ptp, s32 offset_ns)
sizeof(val));
out:
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
return err;
}
@ -751,12 +634,12 @@ static int idt82p33_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
mutex_lock(idt82p33->lock);
err = _idt82p33_adjfine(channel, scaled_ppm);
mutex_unlock(idt82p33->lock);
if (err)
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
mutex_unlock(&idt82p33->reg_lock);
return err;
}
@ -768,29 +651,20 @@ static int idt82p33_adjtime(struct ptp_clock_info *ptp, s64 delta_ns)
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
mutex_lock(idt82p33->lock);
if (abs(delta_ns) < phase_snap_threshold) {
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
return 0;
}
err = _idt82p33_adjtime(channel, delta_ns);
if (err) {
mutex_unlock(&idt82p33->reg_lock);
dev_err(&idt82p33->client->dev,
"Adjtime failed in %s with err %d!\n", __func__, err);
return err;
}
mutex_unlock(idt82p33->lock);
err = idt82p33_sync_tod(channel, true);
if (err)
dev_err(&idt82p33->client->dev,
"Sync_tod failed in %s with err %d!\n", __func__, err);
mutex_unlock(&idt82p33->reg_lock);
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
@ -801,31 +675,31 @@ static int idt82p33_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
struct idt82p33 *idt82p33 = channel->idt82p33;
int err;
mutex_lock(&idt82p33->reg_lock);
mutex_lock(idt82p33->lock);
err = _idt82p33_gettime(channel, ts);
if (err)
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
if (err)
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
static int idt82p33_settime(struct ptp_clock_info *ptp,
const struct timespec64 *ts)
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);
mutex_lock(idt82p33->lock);
err = _idt82p33_settime(channel, ts);
if (err)
dev_err(&idt82p33->client->dev,
"Failed in %s with err %d!\n", __func__, err);
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
if (err)
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
@ -864,7 +738,7 @@ static int idt82p33_channel_init(struct idt82p33_channel *channel, int index)
static void idt82p33_caps_init(struct ptp_clock_info *caps)
{
caps->owner = THIS_MODULE;
caps->max_adj = 92000;
caps->max_adj = DCO_MAX_PPB;
caps->n_per_out = 11;
caps->adjphase = idt82p33_adjwritephase;
caps->adjfine = idt82p33_adjfine;
@ -872,7 +746,6 @@ static void idt82p33_caps_init(struct ptp_clock_info *caps)
caps->gettime64 = idt82p33_gettime;
caps->settime64 = idt82p33_settime;
caps->enable = idt82p33_enable;
caps->do_aux_work = idt82p33_sync_tod_work_handler;
}
static int idt82p33_enable_channel(struct idt82p33 *idt82p33, u32 index)
@ -887,7 +760,7 @@ static int idt82p33_enable_channel(struct idt82p33 *idt82p33, u32 index)
err = idt82p33_channel_init(channel, index);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Channel_init failed in %s with err %d!\n",
__func__, err);
return err;
@ -912,7 +785,7 @@ static int idt82p33_enable_channel(struct idt82p33 *idt82p33, u32 index)
err = idt82p33_dpll_set_mode(channel, PLL_MODE_DCO);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Dpll_set_mode failed in %s with err %d!\n",
__func__, err);
return err;
@ -920,13 +793,13 @@ static int idt82p33_enable_channel(struct idt82p33 *idt82p33, u32 index)
err = idt82p33_enable_tod(channel);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Enable_tod failed in %s with err %d!\n",
__func__, err);
return err;
}
dev_info(&idt82p33->client->dev, "PLL%d registered as ptp%d\n",
dev_info(idt82p33->dev, "PLL%d registered as ptp%d\n",
index, channel->ptp_clock->index);
return 0;
@ -940,25 +813,24 @@ static int idt82p33_load_firmware(struct idt82p33 *idt82p33)
int err;
s32 len;
dev_dbg(&idt82p33->client->dev,
"requesting firmware '%s'\n", FW_FILENAME);
dev_dbg(idt82p33->dev, "requesting firmware '%s'\n", FW_FILENAME);
err = request_firmware(&fw, FW_FILENAME, &idt82p33->client->dev);
err = request_firmware(&fw, FW_FILENAME, idt82p33->dev);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n", __func__, err);
return err;
}
dev_dbg(&idt82p33->client->dev, "firmware size %zu bytes\n", fw->size);
dev_dbg(idt82p33->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,
dev_err(idt82p33->dev,
"bad firmware, reserved field non-zero\n");
err = -EINVAL;
} else {
@ -973,16 +845,11 @@ static int idt82p33_load_firmware(struct idt82p33 *idt82p33)
}
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))
|| loaddr > 0xfb)
if (loaddr > 0x7b)
continue;
err = idt82p33_write(idt82p33, _ADDR(page, loaddr),
err = idt82p33_write(idt82p33, REG_ADDR(page, loaddr),
&val, sizeof(val));
}
@ -997,36 +864,34 @@ out:
}
static int idt82p33_probe(struct i2c_client *client,
const struct i2c_device_id *id)
static int idt82p33_probe(struct platform_device *pdev)
{
struct rsmu_ddata *ddata = dev_get_drvdata(pdev->dev.parent);
struct idt82p33 *idt82p33;
int err;
u8 i;
(void)id;
idt82p33 = devm_kzalloc(&client->dev,
idt82p33 = devm_kzalloc(&pdev->dev,
sizeof(struct idt82p33), GFP_KERNEL);
if (!idt82p33)
return -ENOMEM;
mutex_init(&idt82p33->reg_lock);
idt82p33->client = client;
idt82p33->page_offset = 0xff;
idt82p33->dev = &pdev->dev;
idt82p33->mfd = pdev->dev.parent;
idt82p33->lock = &ddata->lock;
idt82p33->regmap = ddata->regmap;
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);
mutex_lock(idt82p33->lock);
err = idt82p33_load_firmware(idt82p33);
if (err)
dev_warn(&idt82p33->client->dev,
dev_warn(idt82p33->dev,
"loading firmware failed with %d\n", err);
if (idt82p33->pll_mask) {
@ -1034,7 +899,7 @@ static int idt82p33_probe(struct i2c_client *client,
if (idt82p33->pll_mask & (1 << i)) {
err = idt82p33_enable_channel(idt82p33, i);
if (err) {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"Failed in %s with err %d!\n",
__func__, err);
break;
@ -1042,69 +907,38 @@ static int idt82p33_probe(struct i2c_client *client,
}
}
} else {
dev_err(&idt82p33->client->dev,
dev_err(idt82p33->dev,
"no PLLs flagged as PHCs, nothing to do\n");
err = -ENODEV;
}
mutex_unlock(&idt82p33->reg_lock);
mutex_unlock(idt82p33->lock);
if (err) {
idt82p33_ptp_clock_unregister_all(idt82p33);
return err;
}
i2c_set_clientdata(client, idt82p33);
platform_set_drvdata(pdev, idt82p33);
return 0;
}
static int idt82p33_remove(struct i2c_client *client)
static int idt82p33_remove(struct platform_device *pdev)
{
struct idt82p33 *idt82p33 = i2c_get_clientdata(client);
struct idt82p33 *idt82p33 = platform_get_drvdata(pdev);
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 = {
static struct platform_driver idt82p33_driver = {
.driver = {
.of_match_table = of_match_ptr(idt82p33_dt_id),
.name = "idt82p33",
.name = "82p33x1x-phc",
},
.probe = idt82p33_probe,
.remove = idt82p33_remove,
.id_table = idt82p33_i2c_id,
.probe = idt82p33_probe,
.remove = idt82p33_remove,
};
module_i2c_driver(idt82p33_driver);
module_platform_driver(idt82p33_driver);

177
drivers/ptp/ptp_idt82p33.h
View File

@ -8,94 +8,19 @@
#define PTP_IDT82P33_H
#include <linux/ktime.h>
#include <linux/workqueue.h>
#include <linux/mfd/idt82p33_reg.h>
#include <linux/regmap.h>
/* Register Map - AN888_SMUforIEEE_SynchEther_82P33xxx_RevH.pdf */
#define PAGE_NUM (8)
#define _ADDR(page, offset) (((page) << 0x7) | ((offset) & 0x7f))
#define _PAGE(addr) (((addr) >> 0x7) & 0x7)
#define _OFFSET(addr) ((addr) & 0x7f)
#define DPLL1_TOD_CNFG 0x134
#define DPLL2_TOD_CNFG 0x1B4
#define DPLL1_TOD_STS 0x10B
#define DPLL2_TOD_STS 0x18B
#define DPLL1_TOD_TRIGGER 0x115
#define DPLL2_TOD_TRIGGER 0x195
#define DPLL1_OPERATING_MODE_CNFG 0x120
#define DPLL2_OPERATING_MODE_CNFG 0x1A0
#define DPLL1_HOLDOVER_FREQ_CNFG 0x12C
#define DPLL2_HOLDOVER_FREQ_CNFG 0x1AC
#define DPLL1_PHASE_OFFSET_CNFG 0x143
#define DPLL2_PHASE_OFFSET_CNFG 0x1C3
#define DPLL1_SYNC_EDGE_CNFG 0X140
#define DPLL2_SYNC_EDGE_CNFG 0X1C0
#define DPLL1_INPUT_MODE_CNFG 0X116
#define DPLL2_INPUT_MODE_CNFG 0X196
#define OUT_MUX_CNFG(outn) _ADDR(0x6, (0xC * (outn)))
#define PAGE_ADDR 0x7F
/* Register Map end */
/* Register definitions - AN888_SMUforIEEE_SynchEther_82P33xxx_RevH.pdf*/
#define TOD_TRIGGER(wr_trig, rd_trig) ((wr_trig & 0xf) << 4 | (rd_trig & 0xf))
#define SYNC_TOD BIT(1)
#define PH_OFFSET_EN BIT(7)
#define SQUELCH_ENABLE BIT(5)
/* Bit definitions for the DPLL_MODE register */
#define PLL_MODE_SHIFT (0)
#define PLL_MODE_MASK (0x1F)
#define PEROUT_ENABLE_OUTPUT_MASK (0xdeadbeef)
enum pll_mode {
PLL_MODE_MIN = 0,
PLL_MODE_AUTOMATIC = PLL_MODE_MIN,
PLL_MODE_FORCE_FREERUN = 1,
PLL_MODE_FORCE_HOLDOVER = 2,
PLL_MODE_FORCE_LOCKED = 4,
PLL_MODE_FORCE_PRE_LOCKED2 = 5,
PLL_MODE_FORCE_PRE_LOCKED = 6,
PLL_MODE_FORCE_LOST_PHASE = 7,
PLL_MODE_DCO = 10,
PLL_MODE_WPH = 18,
PLL_MODE_MAX = PLL_MODE_WPH,
};
enum hw_tod_trig_sel {
HW_TOD_TRIG_SEL_MIN = 0,
HW_TOD_TRIG_SEL_NO_WRITE = HW_TOD_TRIG_SEL_MIN,
HW_TOD_TRIG_SEL_SYNC_SEL = 1,
HW_TOD_TRIG_SEL_IN12 = 2,
HW_TOD_TRIG_SEL_IN13 = 3,
HW_TOD_TRIG_SEL_IN14 = 4,
HW_TOD_TRIG_SEL_TOD_PPS = 5,
HW_TOD_TRIG_SEL_TIMER_INTERVAL = 6,
HW_TOD_TRIG_SEL_MSB_PHASE_OFFSET_CNFG = 7,
HW_TOD_TRIG_SEL_MSB_HOLDOVER_FREQ_CNFG = 8,
HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG = 9,
HW_TOD_RD_TRIG_SEL_LSB_TOD_STS = HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG,
WR_TRIG_SEL_MAX = HW_TOD_WR_TRIG_SEL_MSB_TOD_CNFG,
};
/* Register bit definitions end */
#define FW_FILENAME "idt82p33xxx.bin"
#define MAX_PHC_PLL (2)
#define TOD_BYTE_COUNT (10)
#define MAX_MEASURMENT_COUNT (5)
#define SNAP_THRESHOLD_NS (150000)
#define SYNC_TOD_TIMEOUT_SEC (5)
#define IDT82P33_MAX_WRITE_COUNT (512)
#define MAX_PHC_PLL (2)
#define TOD_BYTE_COUNT (10)
#define DCO_MAX_PPB (92000)
#define MAX_MEASURMENT_COUNT (5)
#define SNAP_THRESHOLD_NS (10000)
#define IMMEDIATE_SNAP_THRESHOLD_NS (50000)
#define DDCO_THRESHOLD_NS (5)
#define IDT82P33_MAX_WRITE_COUNT (512)
#define PEROUT_ENABLE_OUTPUT_MASK (0xdeadbeef)
#define PLLMASK_ADDR_HI 0xFF
#define PLLMASK_ADDR_LO 0xA5
@ -116,47 +41,6 @@ enum hw_tod_trig_sel {
#define DEFAULT_OUTPUT_MASK_PLL0 (0xc0)
#define DEFAULT_OUTPUT_MASK_PLL1 DEFAULT_OUTPUT_MASK_PLL0
/* PTP Hardware Clock interface */
struct idt82p33_channel {
struct ptp_clock_info caps;
struct ptp_clock *ptp_clock;
struct idt82p33 *idt82p33;
enum pll_mode pll_mode;
/* task to turn off SYNC_TOD bit after pps sync */
struct delayed_work sync_tod_work;
bool sync_tod_on;
s32 current_freq_ppb;
u8 output_mask;
u16 dpll_tod_cnfg;
u16 dpll_tod_trigger;
u16 dpll_tod_sts;
u16 dpll_mode_cnfg;
u16 dpll_freq_cnfg;
u16 dpll_phase_cnfg;
u16 dpll_sync_cnfg;
u16 dpll_input_mode_cnfg;
};
struct idt82p33 {
struct idt82p33_channel channel[MAX_PHC_PLL];
struct i2c_client *client;
u8 page_offset;
u8 pll_mask;
ktime_t start_time;
int calculate_overhead_flag;
s64 tod_write_overhead_ns;
/* Protects I2C read/modify/write registers from concurrent access */
struct mutex reg_lock;
};
/* firmware interface */
struct idt82p33_fwrc {
u8 hiaddr;
u8 loaddr;
u8 value;
u8 reserved;
} __packed;
/**
* @brief Maximum absolute value for write phase offset in femtoseconds
*/
@ -170,5 +54,44 @@ struct idt82p33_fwrc {
*/
#define IDT_T0DPLL_PHASE_RESOL 74506
/* PTP Hardware Clock interface */
struct idt82p33_channel {
struct ptp_clock_info caps;
struct ptp_clock *ptp_clock;
struct idt82p33 *idt82p33;
enum pll_mode pll_mode;
s32 current_freq_ppb;
u8 output_mask;
u16 dpll_tod_cnfg;
u16 dpll_tod_trigger;
u16 dpll_tod_sts;
u16 dpll_mode_cnfg;
u16 dpll_freq_cnfg;
u16 dpll_phase_cnfg;
u16 dpll_sync_cnfg;
u16 dpll_input_mode_cnfg;
};
struct idt82p33 {
struct idt82p33_channel channel[MAX_PHC_PLL];
struct device *dev;
u8 pll_mask;
/* Mutex to protect operations from being interrupted */
struct mutex *lock;
struct regmap *regmap;
struct device *mfd;
/* Overhead calculation for adjtime */
ktime_t start_time;
int calculate_overhead_flag;
s64 tod_write_overhead_ns;
};
/* firmware interface */
struct idt82p33_fwrc {
u8 hiaddr;
u8 loaddr;
u8 value;
u8 reserved;
} __packed;
#endif /* PTP_IDT82P33_H */

3
include/linux/mfd/idt82p33_reg.h
View File

@ -7,6 +7,8 @@
#ifndef HAVE_IDT82P33_REG
#define HAVE_IDT82P33_REG
#define REG_ADDR(page, offset) (((page) << 0x7) | ((offset) & 0x7f))
/* Register address */
#define DPLL1_TOD_CNFG 0x134
#define DPLL2_TOD_CNFG 0x1B4
@ -41,6 +43,7 @@
#define REG_SOFT_RESET 0X381
#define OUT_MUX_CNFG(outn) REG_ADDR(0x6, (0xC * (outn)))
#define TOD_TRIGGER(wr_trig, rd_trig) ((wr_trig & 0xf) << 4 | (rd_trig & 0xf))
/* Register bit definitions */
#define SYNC_TOD BIT(1)