[PATCH v3 2/2] ptp: Add a ptp clock driver for IDT ClockMatrix.
From: vincent . cheng . xh
Date: Mon Oct 21 2019 - 15:58:39 EST
From: Vincent Cheng <vincent.cheng.xh@xxxxxxxxxxx>
The IDT ClockMatrix (TM) family includes integrated devices that provide
eight PLL channels. Each PLL channel can be independently configured as a
frequency synthesizer, jitter attenuator, digitally controlled
oscillator (DCO), or a digital phase lock loop (DPLL). Typically
these devices are used as timing references and clock sources for PTP
applications. This patch adds support for the device.
Co-developed-by: Richard Cochran <richardcochran@xxxxxxxxx>
Signed-off-by: Richard Cochran <richardcochran@xxxxxxxxx>
Signed-off-by: Vincent Cheng <vincent.cheng.xh@xxxxxxxxxxx>
---
Changes since v2:
- As suggested by Andrew Lunn:
1. 'err' is an int, replace s32 with int.
2. Return -EINVAL instead of -1
3. Remove indirection that is used only for unit testing.
- As suggested by Rob Herring:
1. Remove '-ptp' from compatible string
2. Replace wildcard 'x' with the part numbers.
Changes since v1:
- Reported-by: kbuild test robot <lkp@xxxxxxxxx>
1. Fix ARCH=i386 build failure: ERROR: "__divdi3" undefined!
- As suggested by Andrew Lunn:
1. Replace pr_err with dev_err because we are an i2c device
2. Replace set_current_state()+schedule_timeout() with
msleep_interruptable()
3. Downgrade pr_info to dev_dbg where appropriate
---
drivers/ptp/Kconfig | 12 +
drivers/ptp/Makefile | 1 +
drivers/ptp/idt8a340_reg.h | 659 +++++++++++++++++++
drivers/ptp/ptp_clockmatrix.c | 1424 +++++++++++++++++++++++++++++++++++++++++
drivers/ptp/ptp_clockmatrix.h | 104 +++
5 files changed, 2200 insertions(+)
create mode 100644 drivers/ptp/idt8a340_reg.h
create mode 100644 drivers/ptp/ptp_clockmatrix.c
create mode 100644 drivers/ptp/ptp_clockmatrix.h
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 0517272..c48ad23 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -119,4 +119,16 @@ config PTP_1588_CLOCK_KVM
To compile this driver as a module, choose M here: the module
will be called ptp_kvm.
+config PTP_1588_CLOCK_IDTCM
+ tristate "IDT CLOCKMATRIX as PTP clock"
+ select PTP_1588_CLOCK
+ default n
+ help
+ This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
+ clock. This clock is only useful if your time stamping MAC
+ is connected to the IDT chip.
+
+ To compile this driver as a module, choose M here: the module
+ will be called ptp_clockmatrix.
+
endmenu
diff --git a/drivers/ptp/Makefile b/drivers/ptp/Makefile
index 677d1d1..69a06f8 100644
--- a/drivers/ptp/Makefile
+++ b/drivers/ptp/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_PTP_1588_CLOCK_KVM) += ptp_kvm.o
obj-$(CONFIG_PTP_1588_CLOCK_QORIQ) += ptp-qoriq.o
ptp-qoriq-y += ptp_qoriq.o
ptp-qoriq-$(CONFIG_DEBUG_FS) += ptp_qoriq_debugfs.o
+obj-$(CONFIG_PTP_1588_CLOCK_IDTCM) += ptp_clockmatrix.o
\ No newline at end of file
diff --git a/drivers/ptp/idt8a340_reg.h b/drivers/ptp/idt8a340_reg.h
new file mode 100644
index 0000000..9263bc3
--- /dev/null
+++ b/drivers/ptp/idt8a340_reg.h
@@ -0,0 +1,659 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* idt8a340_reg.h
+ *
+ * Originally generated by regen.tcl on Thu Feb 14 19:23:44 PST 2019
+ * https://github.com/richardcochran/regen
+ *
+ * Hand modified to include some HW registers.
+ * Based on 4.8.0, SCSR rev C commit a03c7ae5
+ */
+#ifndef HAVE_IDT8A340_REG
+#define HAVE_IDT8A340_REG
+
+#define PAGE_ADDR_BASE 0x0000
+#define PAGE_ADDR 0x00fc
+
+#define HW_REVISION 0x8180
+#define REV_ID 0x007a
+
+#define HW_DPLL_0 (0x8a00)
+#define HW_DPLL_1 (0x8b00)
+#define HW_DPLL_2 (0x8c00)
+#define HW_DPLL_3 (0x8d00)
+
+#define HW_DPLL_TOD_SW_TRIG_ADDR__0 (0x080)
+#define HW_DPLL_TOD_CTRL_1 (0x089)
+#define HW_DPLL_TOD_CTRL_2 (0x08A)
+#define HW_DPLL_TOD_OVR__0 (0x098)
+#define HW_DPLL_TOD_OUT_0__0 (0x0B0)
+
+#define HW_Q0_Q1_CH_SYNC_CTRL_0 (0xa740)
+#define HW_Q0_Q1_CH_SYNC_CTRL_1 (0xa741)
+#define HW_Q2_Q3_CH_SYNC_CTRL_0 (0xa742)
+#define HW_Q2_Q3_CH_SYNC_CTRL_1 (0xa743)
+#define HW_Q4_Q5_CH_SYNC_CTRL_0 (0xa744)
+#define HW_Q4_Q5_CH_SYNC_CTRL_1 (0xa745)
+#define HW_Q6_Q7_CH_SYNC_CTRL_0 (0xa746)
+#define HW_Q6_Q7_CH_SYNC_CTRL_1 (0xa747)
+#define HW_Q8_CH_SYNC_CTRL_0 (0xa748)
+#define HW_Q8_CH_SYNC_CTRL_1 (0xa749)
+#define HW_Q9_CH_SYNC_CTRL_0 (0xa74a)
+#define HW_Q9_CH_SYNC_CTRL_1 (0xa74b)
+#define HW_Q10_CH_SYNC_CTRL_0 (0xa74c)
+#define HW_Q10_CH_SYNC_CTRL_1 (0xa74d)
+#define HW_Q11_CH_SYNC_CTRL_0 (0xa74e)
+#define HW_Q11_CH_SYNC_CTRL_1 (0xa74f)
+
+#define SYNC_SOURCE_DPLL0_TOD_PPS 0x14
+#define SYNC_SOURCE_DPLL1_TOD_PPS 0x15
+#define SYNC_SOURCE_DPLL2_TOD_PPS 0x16
+#define SYNC_SOURCE_DPLL3_TOD_PPS 0x17
+
+#define SYNCTRL1_MASTER_SYNC_RST BIT(7)
+#define SYNCTRL1_MASTER_SYNC_TRIG BIT(5)
+#define SYNCTRL1_TOD_SYNC_TRIG BIT(4)
+#define SYNCTRL1_FBDIV_FRAME_SYNC_TRIG BIT(3)
+#define SYNCTRL1_FBDIV_SYNC_TRIG BIT(2)
+#define SYNCTRL1_Q1_DIV_SYNC_TRIG BIT(1)
+#define SYNCTRL1_Q0_DIV_SYNC_TRIG BIT(0)
+
+#define RESET_CTRL 0xc000
+#define SM_RESET 0x0012
+#define SM_RESET_CMD 0x5A
+
+#define GENERAL_STATUS 0xc014
+#define HW_REV_ID 0x000A
+#define BOND_ID 0x000B
+#define HW_CSR_ID 0x000C
+#define HW_IRQ_ID 0x000E
+
+#define MAJ_REL 0x0010
+#define MIN_REL 0x0011
+#define HOTFIX_REL 0x0012
+
+#define PIPELINE_ID 0x0014
+#define BUILD_ID 0x0018
+
+#define JTAG_DEVICE_ID 0x001c
+#define PRODUCT_ID 0x001e
+
+#define STATUS 0xc03c
+#define USER_GPIO0_TO_7_STATUS 0x008a
+#define USER_GPIO8_TO_15_STATUS 0x008b
+
+#define GPIO_USER_CONTROL 0xc160
+#define GPIO0_TO_7_OUT 0x0000
+#define GPIO8_TO_15_OUT 0x0001
+
+#define STICKY_STATUS_CLEAR 0xc164
+
+#define GPIO_TOD_NOTIFICATION_CLEAR 0xc16c
+
+#define ALERT_CFG 0xc188
+
+#define SYS_DPLL_XO 0xc194
+
+#define SYS_APLL 0xc19c
+
+#define INPUT_0 0xc1b0
+
+#define INPUT_1 0xc1c0
+
+#define INPUT_2 0xc1d0
+
+#define INPUT_3 0xc200
+
+#define INPUT_4 0xc210
+
+#define INPUT_5 0xc220
+
+#define INPUT_6 0xc230
+
+#define INPUT_7 0xc240
+
+#define INPUT_8 0xc250
+
+#define INPUT_9 0xc260
+
+#define INPUT_10 0xc280
+
+#define INPUT_11 0xc290
+
+#define INPUT_12 0xc2a0
+
+#define INPUT_13 0xc2b0
+
+#define INPUT_14 0xc2c0
+
+#define INPUT_15 0xc2d0
+
+#define REF_MON_0 0xc2e0
+
+#define REF_MON_1 0xc2ec
+
+#define REF_MON_2 0xc300
+
+#define REF_MON_3 0xc30c
+
+#define REF_MON_4 0xc318
+
+#define REF_MON_5 0xc324
+
+#define REF_MON_6 0xc330
+
+#define REF_MON_7 0xc33c
+
+#define REF_MON_8 0xc348
+
+#define REF_MON_9 0xc354
+
+#define REF_MON_10 0xc360
+
+#define REF_MON_11 0xc36c
+
+#define REF_MON_12 0xc380
+
+#define REF_MON_13 0xc38c
+
+#define REF_MON_14 0xc398
+
+#define REF_MON_15 0xc3a4
+
+#define DPLL_0 0xc3b0
+#define DPLL_CTRL_REG_0 0x0002
+#define DPLL_CTRL_REG_1 0x0003
+#define DPLL_CTRL_REG_2 0x0004
+#define DPLL_TOD_SYNC_CFG 0x0031
+#define DPLL_COMBO_SLAVE_CFG_0 0x0032
+#define DPLL_COMBO_SLAVE_CFG_1 0x0033
+#define DPLL_SLAVE_REF_CFG 0x0034
+#define DPLL_REF_MODE 0x0035
+#define DPLL_PHASE_MEASUREMENT_CFG 0x0036
+#define DPLL_MODE 0x0037
+
+#define DPLL_1 0xc400
+
+#define DPLL_2 0xc438
+
+#define DPLL_3 0xc480
+
+#define DPLL_4 0xc4b8
+
+#define DPLL_5 0xc500
+
+#define DPLL_6 0xc538
+
+#define DPLL_7 0xc580
+
+#define SYS_DPLL 0xc5b8
+
+#define DPLL_CTRL_0 0xc600
+#define DPLL_CTRL_DPLL_MANU_REF_CFG 0x0001
+
+#define DPLL_CTRL_1 0xc63c
+
+#define DPLL_CTRL_2 0xc680
+
+#define DPLL_CTRL_3 0xc6bc
+
+#define DPLL_CTRL_4 0xc700
+
+#define DPLL_CTRL_5 0xc73c
+
+#define DPLL_CTRL_6 0xc780
+
+#define DPLL_CTRL_7 0xc7bc
+
+#define SYS_DPLL_CTRL 0xc800
+
+#define DPLL_PHASE_0 0xc818
+
+/* Signed 42-bit FFO in units of 2^(-53) */
+#define DPLL_WR_PHASE 0x0000
+
+#define DPLL_PHASE_1 0xc81c
+
+#define DPLL_PHASE_2 0xc820
+
+#define DPLL_PHASE_3 0xc824
+
+#define DPLL_PHASE_4 0xc828
+
+#define DPLL_PHASE_5 0xc82c
+
+#define DPLL_PHASE_6 0xc830
+
+#define DPLL_PHASE_7 0xc834
+
+#define DPLL_FREQ_0 0xc838
+
+/* Signed 42-bit FFO in units of 2^(-53) */
+#define DPLL_WR_FREQ 0x0000
+
+#define DPLL_FREQ_1 0xc840
+
+#define DPLL_FREQ_2 0xc848
+
+#define DPLL_FREQ_3 0xc850
+
+#define DPLL_FREQ_4 0xc858
+
+#define DPLL_FREQ_5 0xc860
+
+#define DPLL_FREQ_6 0xc868
+
+#define DPLL_FREQ_7 0xc870
+
+#define DPLL_PHASE_PULL_IN_0 0xc880
+#define PULL_IN_OFFSET 0x0000 /* Signed 32 bit */
+#define PULL_IN_SLOPE_LIMIT 0x0004 /* Unsigned 24 bit */
+#define PULL_IN_CTRL 0x0007
+
+#define DPLL_PHASE_PULL_IN_1 0xc888
+
+#define DPLL_PHASE_PULL_IN_2 0xc890
+
+#define DPLL_PHASE_PULL_IN_3 0xc898
+
+#define DPLL_PHASE_PULL_IN_4 0xc8a0
+
+#define DPLL_PHASE_PULL_IN_5 0xc8a8
+
+#define DPLL_PHASE_PULL_IN_6 0xc8b0
+
+#define DPLL_PHASE_PULL_IN_7 0xc8b8
+
+#define GPIO_CFG 0xc8c0
+#define GPIO_CFG_GBL 0x0000
+
+#define GPIO_0 0xc8c2
+#define GPIO_DCO_INC_DEC 0x0000
+#define GPIO_OUT_CTRL_0 0x0001
+#define GPIO_OUT_CTRL_1 0x0002
+#define GPIO_TOD_TRIG 0x0003
+#define GPIO_DPLL_INDICATOR 0x0004
+#define GPIO_LOS_INDICATOR 0x0005
+#define GPIO_REF_INPUT_DSQ_0 0x0006
+#define GPIO_REF_INPUT_DSQ_1 0x0007
+#define GPIO_REF_INPUT_DSQ_2 0x0008
+#define GPIO_REF_INPUT_DSQ_3 0x0009
+#define GPIO_MAN_CLK_SEL_0 0x000a
+#define GPIO_MAN_CLK_SEL_1 0x000b
+#define GPIO_MAN_CLK_SEL_2 0x000c
+#define GPIO_SLAVE 0x000d
+#define GPIO_ALERT_OUT_CFG 0x000e
+#define GPIO_TOD_NOTIFICATION_CFG 0x000f
+#define GPIO_CTRL 0x0010
+
+#define GPIO_1 0xc8d4
+
+#define GPIO_2 0xc8e6
+
+#define GPIO_3 0xc900
+
+#define GPIO_4 0xc912
+
+#define GPIO_5 0xc924
+
+#define GPIO_6 0xc936
+
+#define GPIO_7 0xc948
+
+#define GPIO_8 0xc95a
+
+#define GPIO_9 0xc980
+
+#define GPIO_10 0xc992
+
+#define GPIO_11 0xc9a4
+
+#define GPIO_12 0xc9b6
+
+#define GPIO_13 0xc9c8
+
+#define GPIO_14 0xc9da
+
+#define GPIO_15 0xca00
+
+#define OUT_DIV_MUX 0xca12
+
+#define OUTPUT_0 0xca14
+/* FOD frequency output divider value */
+#define OUT_DIV 0x0000
+#define OUT_DUTY_CYCLE_HIGH 0x0004
+#define OUT_CTRL_0 0x0008
+#define OUT_CTRL_1 0x0009
+/* Phase adjustment in FOD cycles */
+#define OUT_PHASE_ADJ 0x000c
+
+#define OUTPUT_1 0xca24
+
+#define OUTPUT_2 0xca34
+
+#define OUTPUT_3 0xca44
+
+#define OUTPUT_4 0xca54
+
+#define OUTPUT_5 0xca64
+
+#define OUTPUT_6 0xca80
+
+#define OUTPUT_7 0xca90
+
+#define OUTPUT_8 0xcaa0
+
+#define OUTPUT_9 0xcab0
+
+#define OUTPUT_10 0xcac0
+
+#define OUTPUT_11 0xcad0
+
+#define SERIAL 0xcae0
+
+#define PWM_ENCODER_0 0xcb00
+
+#define PWM_ENCODER_1 0xcb08
+
+#define PWM_ENCODER_2 0xcb10
+
+#define PWM_ENCODER_3 0xcb18
+
+#define PWM_ENCODER_4 0xcb20
+
+#define PWM_ENCODER_5 0xcb28
+
+#define PWM_ENCODER_6 0xcb30
+
+#define PWM_ENCODER_7 0xcb38
+
+#define PWM_DECODER_0 0xcb40
+
+#define PWM_DECODER_1 0xcb48
+
+#define PWM_DECODER_2 0xcb50
+
+#define PWM_DECODER_3 0xcb58
+
+#define PWM_DECODER_4 0xcb60
+
+#define PWM_DECODER_5 0xcb68
+
+#define PWM_DECODER_6 0xcb70
+
+#define PWM_DECODER_7 0xcb80
+
+#define PWM_DECODER_8 0xcb88
+
+#define PWM_DECODER_9 0xcb90
+
+#define PWM_DECODER_10 0xcb98
+
+#define PWM_DECODER_11 0xcba0
+
+#define PWM_DECODER_12 0xcba8
+
+#define PWM_DECODER_13 0xcbb0
+
+#define PWM_DECODER_14 0xcbb8
+
+#define PWM_DECODER_15 0xcbc0
+
+#define PWM_USER_DATA 0xcbc8
+
+#define TOD_0 0xcbcc
+
+/* Enable TOD counter, output channel sync and even-PPS mode */
+#define TOD_CFG 0x0000
+
+#define TOD_1 0xcbce
+
+#define TOD_2 0xcbd0
+
+#define TOD_3 0xcbd2
+
+
+#define TOD_WRITE_0 0xcc00
+/* 8-bit subns, 32-bit ns, 48-bit seconds */
+#define TOD_WRITE 0x0000
+/* Counter increments after TOD write is completed */
+#define TOD_WRITE_COUNTER 0x000c
+/* TOD write trigger configuration */
+#define TOD_WRITE_SELECT_CFG_0 0x000d
+/* TOD write trigger selection */
+#define TOD_WRITE_CMD 0x000f
+
+#define TOD_WRITE_1 0xcc10
+
+#define TOD_WRITE_2 0xcc20
+
+#define TOD_WRITE_3 0xcc30
+
+#define TOD_READ_PRIMARY_0 0xcc40
+/* 8-bit subns, 32-bit ns, 48-bit seconds */
+#define TOD_READ_PRIMARY 0x0000
+/* Counter increments after TOD write is completed */
+#define TOD_READ_PRIMARY_COUNTER 0x000b
+/* Read trigger configuration */
+#define TOD_READ_PRIMARY_SEL_CFG_0 0x000c
+/* Read trigger selection */
+#define TOD_READ_PRIMARY_CMD 0x000e
+
+#define TOD_READ_PRIMARY_1 0xcc50
+
+#define TOD_READ_PRIMARY_2 0xcc60
+
+#define TOD_READ_PRIMARY_3 0xcc80
+
+#define TOD_READ_SECONDARY_0 0xcc90
+
+#define TOD_READ_SECONDARY_1 0xcca0
+
+#define TOD_READ_SECONDARY_2 0xccb0
+
+#define TOD_READ_SECONDARY_3 0xccc0
+
+#define OUTPUT_TDC_CFG 0xccd0
+
+#define OUTPUT_TDC_0 0xcd00
+
+#define OUTPUT_TDC_1 0xcd08
+
+#define OUTPUT_TDC_2 0xcd10
+
+#define OUTPUT_TDC_3 0xcd18
+
+#define INPUT_TDC 0xcd20
+
+#define SCRATCH 0xcf50
+
+#define EEPROM 0xcf68
+
+#define OTP 0xcf70
+
+#define BYTE 0xcf80
+
+/* Bit definitions for the MAJ_REL register */
+#define MAJOR_SHIFT (1)
+#define MAJOR_MASK (0x7f)
+#define PR_BUILD BIT(0)
+
+/* Bit definitions for the USER_GPIO0_TO_7_STATUS register */
+#define GPIO0_LEVEL BIT(0)
+#define GPIO1_LEVEL BIT(1)
+#define GPIO2_LEVEL BIT(2)
+#define GPIO3_LEVEL BIT(3)
+#define GPIO4_LEVEL BIT(4)
+#define GPIO5_LEVEL BIT(5)
+#define GPIO6_LEVEL BIT(6)
+#define GPIO7_LEVEL BIT(7)
+
+/* Bit definitions for the USER_GPIO8_TO_15_STATUS register */
+#define GPIO8_LEVEL BIT(0)
+#define GPIO9_LEVEL BIT(1)
+#define GPIO10_LEVEL BIT(2)
+#define GPIO11_LEVEL BIT(3)
+#define GPIO12_LEVEL BIT(4)
+#define GPIO13_LEVEL BIT(5)
+#define GPIO14_LEVEL BIT(6)
+#define GPIO15_LEVEL BIT(7)
+
+/* Bit definitions for the GPIO0_TO_7_OUT register */
+#define GPIO0_DRIVE_LEVEL BIT(0)
+#define GPIO1_DRIVE_LEVEL BIT(1)
+#define GPIO2_DRIVE_LEVEL BIT(2)
+#define GPIO3_DRIVE_LEVEL BIT(3)
+#define GPIO4_DRIVE_LEVEL BIT(4)
+#define GPIO5_DRIVE_LEVEL BIT(5)
+#define GPIO6_DRIVE_LEVEL BIT(6)
+#define GPIO7_DRIVE_LEVEL BIT(7)
+
+/* Bit definitions for the GPIO8_TO_15_OUT register */
+#define GPIO8_DRIVE_LEVEL BIT(0)
+#define GPIO9_DRIVE_LEVEL BIT(1)
+#define GPIO10_DRIVE_LEVEL BIT(2)
+#define GPIO11_DRIVE_LEVEL BIT(3)
+#define GPIO12_DRIVE_LEVEL BIT(4)
+#define GPIO13_DRIVE_LEVEL BIT(5)
+#define GPIO14_DRIVE_LEVEL BIT(6)
+#define GPIO15_DRIVE_LEVEL BIT(7)
+
+/* Bit definitions for the DPLL_TOD_SYNC_CFG register */
+#define TOD_SYNC_SOURCE_SHIFT (1)
+#define TOD_SYNC_SOURCE_MASK (0x3)
+#define TOD_SYNC_EN BIT(0)
+
+/* Bit definitions for the DPLL_MODE register */
+#define WRITE_TIMER_MODE BIT(6)
+#define PLL_MODE_SHIFT (3)
+#define PLL_MODE_MASK (0x7)
+#define STATE_MODE_SHIFT (0)
+#define STATE_MODE_MASK (0x7)
+
+/* Bit definitions for the GPIO_CFG_GBL register */
+#define SUPPLY_MODE_SHIFT (0)
+#define SUPPLY_MODE_MASK (0x3)
+
+/* Bit definitions for the GPIO_DCO_INC_DEC register */
+#define INCDEC_DPLL_INDEX_SHIFT (0)
+#define INCDEC_DPLL_INDEX_MASK (0x7)
+
+/* Bit definitions for the GPIO_OUT_CTRL_0 register */
+#define CTRL_OUT_0 BIT(0)
+#define CTRL_OUT_1 BIT(1)
+#define CTRL_OUT_2 BIT(2)
+#define CTRL_OUT_3 BIT(3)
+#define CTRL_OUT_4 BIT(4)
+#define CTRL_OUT_5 BIT(5)
+#define CTRL_OUT_6 BIT(6)
+#define CTRL_OUT_7 BIT(7)
+
+/* Bit definitions for the GPIO_OUT_CTRL_1 register */
+#define CTRL_OUT_8 BIT(0)
+#define CTRL_OUT_9 BIT(1)
+#define CTRL_OUT_10 BIT(2)
+#define CTRL_OUT_11 BIT(3)
+#define CTRL_OUT_12 BIT(4)
+#define CTRL_OUT_13 BIT(5)
+#define CTRL_OUT_14 BIT(6)
+#define CTRL_OUT_15 BIT(7)
+
+/* Bit definitions for the GPIO_TOD_TRIG register */
+#define TOD_TRIG_0 BIT(0)
+#define TOD_TRIG_1 BIT(1)
+#define TOD_TRIG_2 BIT(2)
+#define TOD_TRIG_3 BIT(3)
+
+/* Bit definitions for the GPIO_DPLL_INDICATOR register */
+#define IND_DPLL_INDEX_SHIFT (0)
+#define IND_DPLL_INDEX_MASK (0x7)
+
+/* Bit definitions for the GPIO_LOS_INDICATOR register */
+#define REFMON_INDEX_SHIFT (0)
+#define REFMON_INDEX_MASK (0xf)
+/* Active level of LOS indicator, 0=low 1=high */
+#define ACTIVE_LEVEL BIT(4)
+
+/* Bit definitions for the GPIO_REF_INPUT_DSQ_0 register */
+#define DSQ_INP_0 BIT(0)
+#define DSQ_INP_1 BIT(1)
+#define DSQ_INP_2 BIT(2)
+#define DSQ_INP_3 BIT(3)
+#define DSQ_INP_4 BIT(4)
+#define DSQ_INP_5 BIT(5)
+#define DSQ_INP_6 BIT(6)
+#define DSQ_INP_7 BIT(7)
+
+/* Bit definitions for the GPIO_REF_INPUT_DSQ_1 register */
+#define DSQ_INP_8 BIT(0)
+#define DSQ_INP_9 BIT(1)
+#define DSQ_INP_10 BIT(2)
+#define DSQ_INP_11 BIT(3)
+#define DSQ_INP_12 BIT(4)
+#define DSQ_INP_13 BIT(5)
+#define DSQ_INP_14 BIT(6)
+#define DSQ_INP_15 BIT(7)
+
+/* Bit definitions for the GPIO_REF_INPUT_DSQ_2 register */
+#define DSQ_DPLL_0 BIT(0)
+#define DSQ_DPLL_1 BIT(1)
+#define DSQ_DPLL_2 BIT(2)
+#define DSQ_DPLL_3 BIT(3)
+#define DSQ_DPLL_4 BIT(4)
+#define DSQ_DPLL_5 BIT(5)
+#define DSQ_DPLL_6 BIT(6)
+#define DSQ_DPLL_7 BIT(7)
+
+/* Bit definitions for the GPIO_REF_INPUT_DSQ_3 register */
+#define DSQ_DPLL_SYS BIT(0)
+#define GPIO_DSQ_LEVEL BIT(1)
+
+/* Bit definitions for the GPIO_TOD_NOTIFICATION_CFG register */
+#define DPLL_TOD_SHIFT (0)
+#define DPLL_TOD_MASK (0x3)
+#define TOD_READ_SECONDARY BIT(2)
+#define GPIO_ASSERT_LEVEL BIT(3)
+
+/* Bit definitions for the GPIO_CTRL register */
+#define GPIO_FUNCTION_EN BIT(0)
+#define GPIO_CMOS_OD_MODE BIT(1)
+#define GPIO_CONTROL_DIR BIT(2)
+#define GPIO_PU_PD_MODE BIT(3)
+#define GPIO_FUNCTION_SHIFT (4)
+#define GPIO_FUNCTION_MASK (0xf)
+
+/* Bit definitions for the OUT_CTRL_1 register */
+#define OUT_SYNC_DISABLE BIT(7)
+#define SQUELCH_VALUE BIT(6)
+#define SQUELCH_DISABLE BIT(5)
+#define PAD_VDDO_SHIFT (2)
+#define PAD_VDDO_MASK (0x7)
+#define PAD_CMOSDRV_SHIFT (0)
+#define PAD_CMOSDRV_MASK (0x3)
+
+/* Bit definitions for the TOD_CFG register */
+#define TOD_EVEN_PPS_MODE BIT(2)
+#define TOD_OUT_SYNC_ENABLE BIT(1)
+#define TOD_ENABLE BIT(0)
+
+/* Bit definitions for the TOD_WRITE_SELECT_CFG_0 register */
+#define WR_PWM_DECODER_INDEX_SHIFT (4)
+#define WR_PWM_DECODER_INDEX_MASK (0xf)
+#define WR_REF_INDEX_SHIFT (0)
+#define WR_REF_INDEX_MASK (0xf)
+
+/* Bit definitions for the TOD_WRITE_CMD register */
+#define TOD_WRITE_SELECTION_SHIFT (0)
+#define TOD_WRITE_SELECTION_MASK (0xf)
+
+/* Bit definitions for the TOD_READ_PRIMARY_SEL_CFG_0 register */
+#define RD_PWM_DECODER_INDEX_SHIFT (4)
+#define RD_PWM_DECODER_INDEX_MASK (0xf)
+#define RD_REF_INDEX_SHIFT (0)
+#define RD_REF_INDEX_MASK (0xf)
+
+/* Bit definitions for the TOD_READ_PRIMARY_CMD register */
+#define TOD_READ_TRIGGER_MODE BIT(4)
+#define TOD_READ_TRIGGER_SHIFT (0)
+#define TOD_READ_TRIGGER_MASK (0xf)
+
+#endif
diff --git a/drivers/ptp/ptp_clockmatrix.c b/drivers/ptp/ptp_clockmatrix.c
new file mode 100644
index 0000000..31883b1
--- /dev/null
+++ b/drivers/ptp/ptp_clockmatrix.c
@@ -0,0 +1,1424 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * PTP hardware clock driver for the IDT ClockMatrix(TM) family of timing and
+ * synchronization devices.
+ *
+ * Copyright (C) 2019 Integrated Device Technology, Inc., a Renesas Company.
+ */
+#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 "ptp_private.h"
+#include "ptp_clockmatrix.h"
+
+MODULE_DESCRIPTION("Driver for IDT ClockMatrix(TM) family");
+MODULE_AUTHOR("Richard Cochran <richardcochran@xxxxxxxxx>");
+MODULE_AUTHOR("IDT support-1588 <IDT-support-1588@xxxxxxxxxxxxxx>");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");
+
+#define SETTIME_CORRECTION (0)
+
+static int char_array_to_timespec(u8 *buf,
+ u8 count,
+ struct timespec64 *ts)
+{
+ u8 i;
+ u64 nsec;
+ time64_t sec;
+
+ if (count < TOD_BYTE_COUNT)
+ return 1;
+
+ /* Sub-nanoseconds are in buf[0]. */
+ nsec = buf[4];
+ for (i = 0; i < 3; i++) {
+ nsec <<= 8;
+ nsec |= buf[3 - i];
+ }
+
+ sec = buf[10];
+ for (i = 0; i < 5; i++) {
+ sec <<= 8;
+ sec |= buf[9 - i];
+ }
+
+ ts->tv_sec = sec;
+ ts->tv_nsec = nsec;
+
+ return 0;
+}
+
+static int timespec_to_char_array(struct timespec64 const *ts,
+ u8 *buf,
+ u8 count)
+{
+ u8 i;
+ s32 nsec;
+ time64_t sec;
+
+ if (count < TOD_BYTE_COUNT)
+ return 1;
+
+ nsec = ts->tv_nsec;
+ sec = ts->tv_sec;
+
+ /* Sub-nanoseconds are in buf[0]. */
+ buf[0] = 0;
+ for (i = 1; i < 5; i++) {
+ buf[i] = nsec & 0xff;
+ nsec >>= 8;
+ }
+
+ for (i = 5; i < TOD_BYTE_COUNT; i++) {
+
+ buf[i] = sec & 0xff;
+ sec >>= 8;
+ }
+
+ return 0;
+}
+
+static int idtcm_xfer(struct idtcm *idtcm,
+ u8 regaddr,
+ u8 *buf,
+ u16 count,
+ bool write)
+{
+ struct i2c_client *client = idtcm->client;
+ struct i2c_msg msg[2];
+ int cnt;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 1;
+ msg[0].buf = ®addr;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = write ? 0 : 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 idtcm_page_offset(struct idtcm *idtcm, u8 val)
+{
+ u8 buf[4];
+ int err;
+
+ if (idtcm->page_offset == val)
+ return 0;
+
+ buf[0] = 0x0;
+ buf[1] = val;
+ buf[2] = 0x10;
+ buf[3] = 0x20;
+
+ err = idtcm_xfer(idtcm, PAGE_ADDR, buf, sizeof(buf), 1);
+
+ if (err)
+ dev_err(&idtcm->client->dev, "failed to set page offset\n");
+ else
+ idtcm->page_offset = val;
+
+ return err;
+}
+
+static int _idtcm_rdwr(struct idtcm *idtcm,
+ u16 regaddr,
+ u8 *buf,
+ u16 count,
+ bool write)
+{
+ u8 hi;
+ u8 lo;
+ int err;
+
+ hi = (regaddr >> 8) & 0xff;
+ lo = regaddr & 0xff;
+
+ err = idtcm_page_offset(idtcm, hi);
+
+ if (err)
+ goto out;
+
+ err = idtcm_xfer(idtcm, lo, buf, count, write);
+out:
+ return err;
+}
+
+static int idtcm_read(struct idtcm *idtcm,
+ u16 module,
+ u16 regaddr,
+ u8 *buf,
+ u16 count)
+{
+ return _idtcm_rdwr(idtcm, module + regaddr, buf, count, false);
+}
+
+static int idtcm_write(struct idtcm *idtcm,
+ u16 module,
+ u16 regaddr,
+ u8 *buf,
+ u16 count)
+{
+ return _idtcm_rdwr(idtcm, module + regaddr, buf, count, true);
+}
+
+static int _idtcm_gettime(struct idtcm_channel *channel,
+ struct timespec64 *ts)
+{
+ struct idtcm *idtcm = channel->idtcm;
+ u8 buf[TOD_BYTE_COUNT];
+ u8 trigger;
+ int err;
+
+ err = idtcm_read(idtcm, channel->tod_read_primary,
+ TOD_READ_PRIMARY_CMD, &trigger, sizeof(trigger));
+ if (err)
+ return err;
+
+ trigger &= ~(TOD_READ_TRIGGER_MASK << TOD_READ_TRIGGER_SHIFT);
+ trigger |= (1 << TOD_READ_TRIGGER_SHIFT);
+ trigger |= TOD_READ_TRIGGER_MODE;
+
+ err = idtcm_write(idtcm, channel->tod_read_primary,
+ TOD_READ_PRIMARY_CMD, &trigger, sizeof(trigger));
+
+ if (err)
+ return err;
+
+ if (idtcm->calculate_overhead_flag)
+ idtcm->start_time = ktime_get_raw();
+
+ err = idtcm_read(idtcm, channel->tod_read_primary,
+ TOD_READ_PRIMARY, buf, sizeof(buf));
+
+ if (err)
+ return err;
+
+ err = char_array_to_timespec(buf, sizeof(buf), ts);
+
+ return err;
+}
+
+static int _sync_pll_output(struct idtcm *idtcm,
+ u8 pll,
+ u8 sync_src,
+ u8 qn,
+ u8 qn_plus_1)
+{
+ int err;
+ u8 val;
+ u16 sync_ctrl0;
+ u16 sync_ctrl1;
+
+ if ((qn == 0) && (qn_plus_1 == 0))
+ return 0;
+
+ switch (pll) {
+ case 0:
+ sync_ctrl0 = HW_Q0_Q1_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q0_Q1_CH_SYNC_CTRL_1;
+ break;
+ case 1:
+ sync_ctrl0 = HW_Q2_Q3_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q2_Q3_CH_SYNC_CTRL_1;
+ break;
+ case 2:
+ sync_ctrl0 = HW_Q4_Q5_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q4_Q5_CH_SYNC_CTRL_1;
+ break;
+ case 3:
+ sync_ctrl0 = HW_Q6_Q7_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q6_Q7_CH_SYNC_CTRL_1;
+ break;
+ case 4:
+ sync_ctrl0 = HW_Q8_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q8_CH_SYNC_CTRL_1;
+ break;
+ case 5:
+ sync_ctrl0 = HW_Q9_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q9_CH_SYNC_CTRL_1;
+ break;
+ case 6:
+ sync_ctrl0 = HW_Q10_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q10_CH_SYNC_CTRL_1;
+ break;
+ case 7:
+ sync_ctrl0 = HW_Q11_CH_SYNC_CTRL_0;
+ sync_ctrl1 = HW_Q11_CH_SYNC_CTRL_1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ val = SYNCTRL1_MASTER_SYNC_RST;
+
+ /* Place master sync in reset */
+ err = idtcm_write(idtcm, 0, sync_ctrl1, &val, sizeof(val));
+ if (err)
+ return err;
+
+ err = idtcm_write(idtcm, 0, sync_ctrl0, &sync_src, sizeof(sync_src));
+ if (err)
+ return err;
+
+ /* Set sync trigger mask */
+ val |= SYNCTRL1_FBDIV_FRAME_SYNC_TRIG | SYNCTRL1_FBDIV_SYNC_TRIG;
+
+ if (qn)
+ val |= SYNCTRL1_Q0_DIV_SYNC_TRIG;
+
+ if (qn_plus_1)
+ val |= SYNCTRL1_Q1_DIV_SYNC_TRIG;
+
+ err = idtcm_write(idtcm, 0, sync_ctrl1, &val, sizeof(val));
+ if (err)
+ return err;
+
+ /* Place master sync out of reset */
+ val &= ~(SYNCTRL1_MASTER_SYNC_RST);
+ err = idtcm_write(idtcm, 0, sync_ctrl1, &val, sizeof(val));
+
+ return err;
+}
+
+static int idtcm_sync_pps_output(struct idtcm_channel *channel)
+{
+ struct idtcm *idtcm = channel->idtcm;
+
+ u8 pll;
+ u8 sync_src;
+ u8 qn;
+ u8 qn_plus_1;
+ int err = 0;
+
+ u16 output_mask = channel->output_mask;
+
+ switch (channel->dpll_n) {
+ case DPLL_0:
+ sync_src = SYNC_SOURCE_DPLL0_TOD_PPS;
+ break;
+ case DPLL_1:
+ sync_src = SYNC_SOURCE_DPLL1_TOD_PPS;
+ break;
+ case DPLL_2:
+ sync_src = SYNC_SOURCE_DPLL2_TOD_PPS;
+ break;
+ case DPLL_3:
+ sync_src = SYNC_SOURCE_DPLL3_TOD_PPS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (pll = 0; pll < 8; pll++) {
+
+ qn = output_mask & 0x1;
+ output_mask = output_mask >> 1;
+
+ if (pll < 4) {
+ /* First 4 pll has 2 outputs */
+ qn_plus_1 = output_mask & 0x1;
+ output_mask = output_mask >> 1;
+ } else {
+ qn_plus_1 = 0;
+ }
+
+ if ((qn != 0) || (qn_plus_1 != 0))
+ err = _sync_pll_output(idtcm, pll, sync_src, qn,
+ qn_plus_1);
+
+ if (err)
+ return err;
+ }
+
+ return err;
+}
+
+static int _idtcm_set_dpll_tod(struct idtcm_channel *channel,
+ struct timespec64 const *ts,
+ enum hw_tod_write_trig_sel wr_trig)
+{
+ struct idtcm *idtcm = channel->idtcm;
+
+ u8 buf[TOD_BYTE_COUNT];
+ u8 cmd;
+ int err;
+ struct timespec64 local_ts = *ts;
+ s64 total_overhead_ns;
+
+ /* Configure HW TOD write trigger. */
+ err = idtcm_read(idtcm, channel->hw_dpll_n, HW_DPLL_TOD_CTRL_1,
+ &cmd, sizeof(cmd));
+
+ if (err)
+ return err;
+
+ cmd &= ~(0x0f);
+ cmd |= wr_trig | 0x08;
+
+ err = idtcm_write(idtcm, channel->hw_dpll_n, HW_DPLL_TOD_CTRL_1,
+ &cmd, sizeof(cmd));
+
+ if (err)
+ return err;
+
+ if (wr_trig != HW_TOD_WR_TRIG_SEL_MSB) {
+
+ err = timespec_to_char_array(&local_ts, buf, sizeof(buf));
+
+ if (err)
+ return err;
+
+ err = idtcm_write(idtcm, channel->hw_dpll_n,
+ HW_DPLL_TOD_OVR__0, buf, sizeof(buf));
+
+ if (err)
+ return err;
+ }
+
+ /* ARM HW TOD write trigger. */
+ cmd &= ~(0x08);
+
+ err = idtcm_write(idtcm, channel->hw_dpll_n, HW_DPLL_TOD_CTRL_1,
+ &cmd, sizeof(cmd));
+
+ if (wr_trig == HW_TOD_WR_TRIG_SEL_MSB) {
+
+ if (idtcm->calculate_overhead_flag) {
+ total_overhead_ns = ktime_to_ns(ktime_get_raw()
+ - idtcm->start_time)
+ + idtcm->tod_write_overhead_ns
+ + SETTIME_CORRECTION;
+
+ timespec64_add_ns(&local_ts, total_overhead_ns);
+
+ idtcm->calculate_overhead_flag = 0;
+ }
+
+ err = timespec_to_char_array(&local_ts, buf, sizeof(buf));
+
+ if (err)
+ return err;
+
+ err = idtcm_write(idtcm, channel->hw_dpll_n,
+ HW_DPLL_TOD_OVR__0, buf, sizeof(buf));
+ }
+
+ return err;
+}
+
+static int _idtcm_settime(struct idtcm_channel *channel,
+ struct timespec64 const *ts,
+ enum hw_tod_write_trig_sel wr_trig)
+{
+ struct idtcm *idtcm = channel->idtcm;
+ s32 retval;
+ int err;
+ int i;
+ u8 trig_sel;
+
+ err = _idtcm_set_dpll_tod(channel, ts, wr_trig);
+
+ if (err)
+ return err;
+
+ /* Wait for the operation to complete. */
+ for (i = 0; i < 10000; i++) {
+ err = idtcm_read(idtcm, channel->hw_dpll_n,
+ HW_DPLL_TOD_CTRL_1, &trig_sel,
+ sizeof(trig_sel));
+
+ if (err)
+ return err;
+
+ if (trig_sel == 0x4a)
+ break;
+
+ err = 1;
+ }
+
+ if (err)
+ return err;
+
+ retval = idtcm_sync_pps_output(channel);
+
+ return retval;
+}
+
+static int idtcm_set_phase_pull_in_offset(struct idtcm_channel *channel,
+ s32 offset_ns)
+{
+ int err;
+ int i;
+ struct idtcm *idtcm = channel->idtcm;
+
+ u8 buf[4];
+
+ for (i = 0; i < 4; i++) {
+ buf[i] = 0xff & (offset_ns);
+ offset_ns >>= 8;
+ }
+
+ err = idtcm_write(idtcm, channel->dpll_phase_pull_in, PULL_IN_OFFSET,
+ buf, sizeof(buf));
+
+ return err;
+}
+
+static int idtcm_set_phase_pull_in_slope_limit(struct idtcm_channel *channel,
+ u32 max_ffo_ppb)
+{
+ int err;
+ u8 i;
+ struct idtcm *idtcm = channel->idtcm;
+
+ u8 buf[3];
+
+ if (max_ffo_ppb & 0xff000000)
+ max_ffo_ppb = 0;
+
+ for (i = 0; i < 3; i++) {
+ buf[i] = 0xff & (max_ffo_ppb);
+ max_ffo_ppb >>= 8;
+ }
+
+ err = idtcm_write(idtcm, channel->dpll_phase_pull_in,
+ PULL_IN_SLOPE_LIMIT, buf, sizeof(buf));
+
+ return err;
+}
+
+static int idtcm_start_phase_pull_in(struct idtcm_channel *channel)
+{
+ int err;
+ struct idtcm *idtcm = channel->idtcm;
+
+ u8 buf;
+
+ err = idtcm_read(idtcm, channel->dpll_phase_pull_in, PULL_IN_CTRL,
+ &buf, sizeof(buf));
+
+ if (err)
+ return err;
+
+ if (buf == 0) {
+ buf = 0x01;
+ err = idtcm_write(idtcm, channel->dpll_phase_pull_in,
+ PULL_IN_CTRL, &buf, sizeof(buf));
+ } else {
+ err = -EBUSY;
+ }
+
+ return err;
+}
+
+static int idtcm_do_phase_pull_in(struct idtcm_channel *channel,
+ s32 offset_ns,
+ u32 max_ffo_ppb)
+{
+ int err;
+
+ err = idtcm_set_phase_pull_in_offset(channel, -offset_ns);
+
+ if (err)
+ return err;
+
+ err = idtcm_set_phase_pull_in_slope_limit(channel, max_ffo_ppb);
+
+ if (err)
+ return err;
+
+ err = idtcm_start_phase_pull_in(channel);
+
+ return err;
+}
+
+static int _idtcm_adjtime(struct idtcm_channel *channel, s64 delta)
+{
+ int err;
+ struct idtcm *idtcm = channel->idtcm;
+ struct timespec64 ts;
+ s64 now;
+
+ if (abs(delta) < PHASE_PULL_IN_THRESHOLD_NS) {
+ err = idtcm_do_phase_pull_in(channel, delta, 0);
+ } else {
+ idtcm->calculate_overhead_flag = 1;
+
+ err = _idtcm_gettime(channel, &ts);
+
+ if (err)
+ return err;
+
+ now = timespec64_to_ns(&ts);
+ now += delta;
+
+ ts = ns_to_timespec64(now);
+
+ err = _idtcm_settime(channel, &ts, HW_TOD_WR_TRIG_SEL_MSB);
+ }
+
+ return err;
+}
+
+static int idtcm_state_machine_reset(struct idtcm *idtcm)
+{
+ int err;
+ u8 byte = SM_RESET_CMD;
+
+ err = idtcm_write(idtcm, RESET_CTRL, SM_RESET, &byte, sizeof(byte));
+
+ if (!err)
+ msleep_interruptible(POST_SM_RESET_DELAY_MS);
+
+ return err;
+}
+
+static int idtcm_read_hw_rev_id(struct idtcm *idtcm, u8 *hw_rev_id)
+{
+ return idtcm_read(idtcm,
+ GENERAL_STATUS,
+ HW_REV_ID,
+ hw_rev_id,
+ sizeof(u8));
+}
+
+static int idtcm_read_bond_id(struct idtcm *idtcm, u8 *bond_id)
+{
+ return idtcm_read(idtcm,
+ GENERAL_STATUS,
+ BOND_ID,
+ bond_id,
+ sizeof(u8));
+}
+
+static int idtcm_read_hw_csr_id(struct idtcm *idtcm, u16 *hw_csr_id)
+{
+ int err;
+ u8 buf[2] = {0};
+
+ err = idtcm_read(idtcm, GENERAL_STATUS, HW_CSR_ID, buf, sizeof(buf));
+
+ *hw_csr_id = (buf[1] << 8) | buf[0];
+
+ return err;
+}
+
+static int idtcm_read_hw_irq_id(struct idtcm *idtcm, u16 *hw_irq_id)
+{
+ int err;
+ u8 buf[2] = {0};
+
+ err = idtcm_read(idtcm, GENERAL_STATUS, HW_IRQ_ID, buf, sizeof(buf));
+
+ *hw_irq_id = (buf[1] << 8) | buf[0];
+
+ return err;
+}
+
+static int idtcm_read_product_id(struct idtcm *idtcm, u16 *product_id)
+{
+ int err;
+ u8 buf[2] = {0};
+
+ err = idtcm_read(idtcm, GENERAL_STATUS, PRODUCT_ID, buf, sizeof(buf));
+
+ *product_id = (buf[1] << 8) | buf[0];
+
+ return err;
+}
+
+static int idtcm_read_major_release(struct idtcm *idtcm, u8 *major)
+{
+ int err;
+ u8 buf = 0;
+
+ err = idtcm_read(idtcm, GENERAL_STATUS, MAJ_REL, &buf, sizeof(buf));
+
+ *major = buf >> 1;
+
+ return err;
+}
+
+static int idtcm_read_minor_release(struct idtcm *idtcm, u8 *minor)
+{
+ return idtcm_read(idtcm, GENERAL_STATUS, MIN_REL, minor, sizeof(u8));
+}
+
+static int idtcm_read_hotfix_release(struct idtcm *idtcm, u8 *hotfix)
+{
+ return idtcm_read(idtcm,
+ GENERAL_STATUS,
+ HOTFIX_REL,
+ hotfix,
+ sizeof(u8));
+}
+
+static int idtcm_read_pipeline(struct idtcm *idtcm, u32 *pipeline)
+{
+ int err;
+ u8 buf[4] = {0};
+
+ err = idtcm_read(idtcm,
+ GENERAL_STATUS,
+ PIPELINE_ID,
+ &buf[0],
+ sizeof(buf));
+
+ *pipeline = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
+
+ return err;
+}
+
+static int process_pll_mask(struct idtcm *idtcm, u32 addr, u8 val, u8 *mask)
+{
+ int err = 0;
+
+ if (addr == PLL_MASK_ADDR) {
+ if ((val & 0xf0) || !(val & 0xf)) {
+ dev_err(&idtcm->client->dev,
+ "Invalid PLL mask 0x%hhx\n", val);
+ err = -EINVAL;
+ }
+ *mask = val;
+ }
+
+ return err;
+}
+
+static int set_pll_output_mask(struct idtcm *idtcm, u16 addr, u8 val)
+{
+ int err = 0;
+
+ switch (addr) {
+ case OUTPUT_MASK_PLL0_ADDR:
+ SET_U16_LSB(idtcm->channel[0].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL0_ADDR + 1:
+ SET_U16_MSB(idtcm->channel[0].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL1_ADDR:
+ SET_U16_LSB(idtcm->channel[1].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL1_ADDR + 1:
+ SET_U16_MSB(idtcm->channel[1].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL2_ADDR:
+ SET_U16_LSB(idtcm->channel[2].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL2_ADDR + 1:
+ SET_U16_MSB(idtcm->channel[2].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL3_ADDR:
+ SET_U16_LSB(idtcm->channel[3].output_mask, val);
+ break;
+ case OUTPUT_MASK_PLL3_ADDR + 1:
+ SET_U16_MSB(idtcm->channel[3].output_mask, val);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ return err;
+}
+
+static int check_and_set_masks(struct idtcm *idtcm,
+ u16 regaddr,
+ u8 val)
+{
+ int err = 0;
+
+ if (set_pll_output_mask(idtcm, regaddr, val)) {
+ /* Not an output mask, check for pll mask */
+ err = process_pll_mask(idtcm, regaddr, val, &idtcm->pll_mask);
+ }
+
+ return err;
+}
+
+static void display_pll_and_output_masks(struct idtcm *idtcm)
+{
+ u8 i;
+ u8 mask;
+
+ dev_dbg(&idtcm->client->dev, "pllmask = 0x%02x\n", idtcm->pll_mask);
+
+ for (i = 0; i < MAX_PHC_PLL; i++) {
+ mask = 1 << i;
+
+ if (mask & idtcm->pll_mask)
+ dev_dbg(&idtcm->client->dev,
+ "PLL%d output_mask = 0x%04x\n",
+ i, idtcm->channel[i].output_mask);
+ }
+}
+
+static int idtcm_load_firmware(struct idtcm *idtcm,
+ struct device *dev)
+{
+ const struct firmware *fw;
+ struct idtcm_fwrc *rec;
+ u32 regaddr;
+ int err;
+ s32 len;
+ u8 val;
+ u8 loaddr;
+
+ dev_dbg(&idtcm->client->dev, "requesting firmware '%s'\n", FW_FILENAME);
+
+ err = request_firmware(&fw, FW_FILENAME, dev);
+
+ if (err)
+ return err;
+
+ dev_dbg(&idtcm->client->dev, "firmware size %zu bytes\n", fw->size);
+
+ rec = (struct idtcm_fwrc *) fw->data;
+
+ if (fw->size > 0)
+ idtcm_state_machine_reset(idtcm);
+
+ for (len = fw->size; len > 0; len -= sizeof(*rec)) {
+
+ if (rec->reserved) {
+ dev_err(&idtcm->client->dev,
+ "bad firmware, reserved field non-zero\n");
+ err = -EINVAL;
+ } else {
+ regaddr = rec->hiaddr << 8;
+ regaddr |= rec->loaddr;
+
+ val = rec->value;
+ loaddr = rec->loaddr;
+
+ rec++;
+
+ err = check_and_set_masks(idtcm, regaddr, val);
+ }
+
+ if (err == 0) {
+ /* Top (status registers) and bottom are read-only */
+ if ((regaddr < GPIO_USER_CONTROL)
+ || (regaddr >= SCRATCH))
+ continue;
+
+ /* Page size 128, last 4 bytes of page skipped */
+ if (((loaddr > 0x7b) && (loaddr <= 0x7f))
+ || ((loaddr > 0xfb) && (loaddr <= 0xff)))
+ continue;
+
+ err = idtcm_write(idtcm, regaddr, 0, &val, sizeof(val));
+ }
+
+ if (err)
+ goto out;
+ }
+
+ display_pll_and_output_masks(idtcm);
+
+out:
+ release_firmware(fw);
+ return err;
+}
+
+static int idtcm_pps_enable(struct idtcm_channel *channel, bool enable)
+{
+ struct idtcm *idtcm = channel->idtcm;
+ u32 module;
+ u8 val;
+ int err;
+
+ /*
+ * This assumes that the 1-PPS is on the second of the two
+ * output. But is this always true?
+ */
+ switch (channel->dpll_n) {
+ case DPLL_0:
+ module = OUTPUT_1;
+ break;
+ case DPLL_1:
+ module = OUTPUT_3;
+ break;
+ case DPLL_2:
+ module = OUTPUT_5;
+ break;
+ case DPLL_3:
+ module = OUTPUT_7;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = idtcm_read(idtcm, module, OUT_CTRL_1, &val, sizeof(val));
+
+ if (err)
+ return err;
+
+ if (enable)
+ val |= SQUELCH_DISABLE;
+ else
+ val &= ~SQUELCH_DISABLE;
+
+ err = idtcm_write(idtcm, module, OUT_CTRL_1, &val, sizeof(val));
+
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int idtcm_set_pll_mode(struct idtcm_channel *channel,
+ enum pll_mode pll_mode)
+{
+ struct idtcm *idtcm = channel->idtcm;
+ int err;
+ u8 dpll_mode;
+
+ err = idtcm_read(idtcm, channel->dpll_n, DPLL_MODE,
+ &dpll_mode, sizeof(dpll_mode));
+ if (err)
+ return err;
+
+ dpll_mode &= ~(PLL_MODE_MASK << PLL_MODE_SHIFT);
+
+ dpll_mode |= (pll_mode << PLL_MODE_SHIFT);
+
+ channel->pll_mode = pll_mode;
+
+ err = idtcm_write(idtcm, channel->dpll_n, DPLL_MODE,
+ &dpll_mode, sizeof(dpll_mode));
+ if (err)
+ return err;
+
+ return 0;
+}
+
+/* PTP Hardware Clock interface */
+static int idtcm_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ struct idtcm_channel *channel =
+ container_of(ptp, struct idtcm_channel, caps);
+ struct idtcm *idtcm = channel->idtcm;
+ u8 i;
+ bool neg_adj = 0;
+ int err;
+ u8 buf[6] = {0};
+ s64 fcw;
+
+ if (channel->pll_mode != PLL_MODE_WRITE_FREQUENCY) {
+ err = idtcm_set_pll_mode(channel, PLL_MODE_WRITE_FREQUENCY);
+ if (err)
+ return err;
+ }
+
+ /*
+ * Frequency Control Word unit is: 1.11 * 10^-10 ppm
+ *
+ * adjfreq:
+ * ppb * 10^9
+ * FCW = ----------
+ * 111
+ *
+ * adjfine:
+ * ppm_16 * 5^12
+ * FCW = -------------
+ * 111 * 2^4
+ */
+ if (ppb < 0) {
+ neg_adj = 1;
+ ppb = -ppb;
+ }
+
+ /* 2 ^ -53 = 1.1102230246251565404236316680908e-16 */
+ fcw = ppb * 1000000000000ULL;
+
+ fcw = div_u64(fcw, 111022);
+
+ if (neg_adj)
+ fcw = -fcw;
+
+ for (i = 0; i < 6; i++) {
+ buf[i] = fcw & 0xff;
+ fcw >>= 8;
+ }
+
+ mutex_lock(&idtcm->reg_lock);
+
+ err = idtcm_write(idtcm, channel->dpll_freq, DPLL_WR_FREQ,
+ buf, sizeof(buf));
+
+ mutex_unlock(&idtcm->reg_lock);
+ return err;
+}
+
+static int idtcm_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
+{
+ struct idtcm_channel *channel =
+ container_of(ptp, struct idtcm_channel, caps);
+ struct idtcm *idtcm = channel->idtcm;
+ int err;
+
+ mutex_lock(&idtcm->reg_lock);
+
+ err = _idtcm_gettime(channel, ts);
+
+ mutex_unlock(&idtcm->reg_lock);
+
+ return err;
+}
+
+static int idtcm_settime(struct ptp_clock_info *ptp,
+ const struct timespec64 *ts)
+{
+ struct idtcm_channel *channel =
+ container_of(ptp, struct idtcm_channel, caps);
+ struct idtcm *idtcm = channel->idtcm;
+ int err;
+
+ mutex_lock(&idtcm->reg_lock);
+
+ err = _idtcm_settime(channel, ts, HW_TOD_WR_TRIG_SEL_MSB);
+
+ mutex_unlock(&idtcm->reg_lock);
+
+ return err;
+}
+
+static int idtcm_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ struct idtcm_channel *channel =
+ container_of(ptp, struct idtcm_channel, caps);
+ struct idtcm *idtcm = channel->idtcm;
+ int err;
+
+ mutex_lock(&idtcm->reg_lock);
+
+ err = _idtcm_adjtime(channel, delta);
+
+ mutex_unlock(&idtcm->reg_lock);
+
+ return err;
+}
+
+static int idtcm_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq, int on)
+{
+ struct idtcm_channel *channel =
+ container_of(ptp, struct idtcm_channel, caps);
+
+ switch (rq->type) {
+ case PTP_CLK_REQ_PEROUT:
+ if (!on)
+ return idtcm_pps_enable(channel, false);
+
+ /* Only accept a 1-PPS aligned to the second. */
+ if (rq->perout.start.nsec || rq->perout.period.sec != 1 ||
+ rq->perout.period.nsec)
+ return -ERANGE;
+
+ return idtcm_pps_enable(channel, true);
+ default:
+ break;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int idtcm_enable_tod(struct idtcm_channel *channel)
+{
+ struct idtcm *idtcm = channel->idtcm;
+ struct timespec64 ts = {0, 0};
+ u8 cfg;
+ int err;
+
+ err = idtcm_pps_enable(channel, false);
+ if (err)
+ return err;
+
+ /*
+ * Start the TOD clock ticking.
+ */
+ err = idtcm_read(idtcm, channel->tod_n, TOD_CFG, &cfg, sizeof(cfg));
+ if (err)
+ return err;
+
+ cfg |= TOD_ENABLE;
+
+ err = idtcm_write(idtcm, channel->tod_n, TOD_CFG, &cfg, sizeof(cfg));
+ if (err)
+ return err;
+
+ return _idtcm_settime(channel, &ts, HW_TOD_WR_TRIG_SEL_MSB);
+}
+
+static void idtcm_display_version_info(struct idtcm *idtcm)
+{
+ u8 major;
+ u8 minor;
+ u8 hotfix;
+ u32 pipeline;
+ u16 product_id;
+ u16 csr_id;
+ u16 irq_id;
+ u8 hw_rev_id;
+ u8 bond_id;
+
+ idtcm_read_major_release(idtcm, &major);
+ idtcm_read_minor_release(idtcm, &minor);
+ idtcm_read_hotfix_release(idtcm, &hotfix);
+ idtcm_read_pipeline(idtcm, &pipeline);
+
+ idtcm_read_product_id(idtcm, &product_id);
+ idtcm_read_hw_rev_id(idtcm, &hw_rev_id);
+ idtcm_read_bond_id(idtcm, &bond_id);
+ idtcm_read_hw_csr_id(idtcm, &csr_id);
+ idtcm_read_hw_irq_id(idtcm, &irq_id);
+
+ dev_info(&idtcm->client->dev, "Version: %d.%d.%d, Pipeline %u\t"
+ "0x%04x, Rev %d, Bond %d, CSR %d, IRQ %d\n",
+ major, minor, hotfix, pipeline,
+ product_id, hw_rev_id, bond_id, csr_id, irq_id);
+}
+
+static struct ptp_clock_info idtcm_caps = {
+ .owner = THIS_MODULE,
+ .max_adj = 244000,
+ .n_per_out = 1,
+ .adjfreq = &idtcm_adjfreq,
+ .adjtime = &idtcm_adjtime,
+ .gettime64 = &idtcm_gettime,
+ .settime64 = &idtcm_settime,
+ .enable = &idtcm_enable,
+};
+
+static int idtcm_enable_channel(struct idtcm *idtcm, u32 index)
+{
+ struct idtcm_channel *channel;
+ int err;
+
+ if (!(index < MAX_PHC_PLL))
+ return -EINVAL;
+
+ channel = &idtcm->channel[index];
+
+ switch (index) {
+ case 0:
+ channel->dpll_freq = DPLL_FREQ_0;
+ channel->dpll_n = DPLL_0;
+ channel->tod_read_primary = TOD_READ_PRIMARY_0;
+ channel->tod_write = TOD_WRITE_0;
+ channel->tod_n = TOD_0;
+ channel->hw_dpll_n = HW_DPLL_0;
+ channel->dpll_phase = DPLL_PHASE_0;
+ channel->dpll_ctrl_n = DPLL_CTRL_0;
+ channel->dpll_phase_pull_in = DPLL_PHASE_PULL_IN_0;
+ break;
+ case 1:
+ channel->dpll_freq = DPLL_FREQ_1;
+ channel->dpll_n = DPLL_1;
+ channel->tod_read_primary = TOD_READ_PRIMARY_1;
+ channel->tod_write = TOD_WRITE_1;
+ channel->tod_n = TOD_1;
+ channel->hw_dpll_n = HW_DPLL_1;
+ channel->dpll_phase = DPLL_PHASE_1;
+ channel->dpll_ctrl_n = DPLL_CTRL_1;
+ channel->dpll_phase_pull_in = DPLL_PHASE_PULL_IN_1;
+ break;
+ case 2:
+ channel->dpll_freq = DPLL_FREQ_2;
+ channel->dpll_n = DPLL_2;
+ channel->tod_read_primary = TOD_READ_PRIMARY_2;
+ channel->tod_write = TOD_WRITE_2;
+ channel->tod_n = TOD_2;
+ channel->hw_dpll_n = HW_DPLL_2;
+ channel->dpll_phase = DPLL_PHASE_2;
+ channel->dpll_ctrl_n = DPLL_CTRL_2;
+ channel->dpll_phase_pull_in = DPLL_PHASE_PULL_IN_2;
+ break;
+ case 3:
+ channel->dpll_freq = DPLL_FREQ_3;
+ channel->dpll_n = DPLL_3;
+ channel->tod_read_primary = TOD_READ_PRIMARY_3;
+ channel->tod_write = TOD_WRITE_3;
+ channel->tod_n = TOD_3;
+ channel->hw_dpll_n = HW_DPLL_3;
+ channel->dpll_phase = DPLL_PHASE_3;
+ channel->dpll_ctrl_n = DPLL_CTRL_3;
+ channel->dpll_phase_pull_in = DPLL_PHASE_PULL_IN_3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ channel->idtcm = idtcm;
+
+ channel->caps = idtcm_caps;
+ snprintf(channel->caps.name, sizeof(channel->caps.name),
+ "IDT CM PLL%u", index);
+
+ err = idtcm_set_pll_mode(channel, PLL_MODE_WRITE_FREQUENCY);
+ if (err)
+ return err;
+
+ err = idtcm_enable_tod(channel);
+ if (err)
+ return err;
+
+ 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;
+
+ dev_info(&idtcm->client->dev, "PLL%d registered as ptp%d\n",
+ index, channel->ptp_clock->index);
+
+ return 0;
+}
+
+static void ptp_clock_unregister_all(struct idtcm *idtcm)
+{
+ u8 i;
+ struct idtcm_channel *channel;
+
+ for (i = 0; i < MAX_PHC_PLL; i++) {
+
+ channel = &idtcm->channel[i];
+
+ if (channel->ptp_clock)
+ ptp_clock_unregister(channel->ptp_clock);
+ }
+}
+
+static void set_default_masks(struct idtcm *idtcm)
+{
+ idtcm->pll_mask = DEFAULT_PLL_MASK;
+
+ idtcm->channel[0].output_mask = DEFAULT_OUTPUT_MASK_PLL0;
+ idtcm->channel[1].output_mask = DEFAULT_OUTPUT_MASK_PLL1;
+ idtcm->channel[2].output_mask = DEFAULT_OUTPUT_MASK_PLL2;
+ idtcm->channel[3].output_mask = DEFAULT_OUTPUT_MASK_PLL3;
+}
+
+static int set_tod_write_overhead(struct idtcm *idtcm)
+{
+ int err;
+ u8 i;
+
+ s64 total_ns = 0;
+
+ ktime_t start;
+ ktime_t stop;
+
+ char buf[TOD_BYTE_COUNT];
+
+ struct idtcm_channel *channel = &idtcm->channel[2];
+
+ /* Set page offset */
+ idtcm_write(idtcm, channel->hw_dpll_n, HW_DPLL_TOD_OVR__0,
+ buf, sizeof(buf));
+
+ for (i = 0; i < TOD_WRITE_OVERHEAD_COUNT_MAX; i++) {
+
+ start = ktime_get_raw();
+
+ err = idtcm_write(idtcm, channel->hw_dpll_n,
+ HW_DPLL_TOD_OVR__0, buf, sizeof(buf));
+
+ if (err)
+ return err;
+
+ stop = ktime_get_raw();
+
+ total_ns += ktime_to_ns(stop - start);
+ }
+
+ idtcm->tod_write_overhead_ns = div_s64(total_ns,
+ TOD_WRITE_OVERHEAD_COUNT_MAX);
+
+ return err;
+}
+
+static int idtcm_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct idtcm *idtcm;
+ int err;
+ u8 i;
+
+ /* Unused for now */
+ (void)id;
+
+ idtcm = devm_kzalloc(&client->dev, sizeof(struct idtcm), GFP_KERNEL);
+
+ if (!idtcm)
+ return -ENOMEM;
+
+ idtcm->client = client;
+ idtcm->page_offset = 0xff;
+ idtcm->calculate_overhead_flag = 0;
+
+ set_default_masks(idtcm);
+
+ mutex_init(&idtcm->reg_lock);
+ mutex_lock(&idtcm->reg_lock);
+
+ idtcm_display_version_info(idtcm);
+
+ err = set_tod_write_overhead(idtcm);
+
+ if (err)
+ return err;
+
+ err = idtcm_load_firmware(idtcm, &client->dev);
+
+ if (err)
+ dev_warn(&idtcm->client->dev,
+ "loading firmware failed with %d\n", err);
+
+ if (idtcm->pll_mask) {
+ for (i = 0; i < MAX_PHC_PLL; i++) {
+ if (idtcm->pll_mask & (1 << i)) {
+ err = idtcm_enable_channel(idtcm, i);
+ if (err)
+ break;
+ }
+ }
+ } else {
+ dev_err(&idtcm->client->dev,
+ "no PLLs flagged as PHCs, nothing to do\n");
+ err = -ENODEV;
+ }
+
+ mutex_unlock(&idtcm->reg_lock);
+
+ if (err) {
+ ptp_clock_unregister_all(idtcm);
+ return err;
+ }
+
+ i2c_set_clientdata(client, idtcm);
+
+ return 0;
+}
+
+static int idtcm_remove(struct i2c_client *client)
+{
+ struct idtcm *idtcm = i2c_get_clientdata(client);
+
+ ptp_clock_unregister_all(idtcm);
+
+ mutex_destroy(&idtcm->reg_lock);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id idtcm_dt_id[] = {
+ { .compatible = "idt,8a34000" },
+ { .compatible = "idt,8a34001" },
+ { .compatible = "idt,8a34002" },
+ { .compatible = "idt,8a34003" },
+ { .compatible = "idt,8a34004" },
+ { .compatible = "idt,8a34005" },
+ { .compatible = "idt,8a34006" },
+ { .compatible = "idt,8a34007" },
+ { .compatible = "idt,8a34008" },
+ { .compatible = "idt,8a34009" },
+ { .compatible = "idt,8a34010" },
+ { .compatible = "idt,8a34011" },
+ { .compatible = "idt,8a34012" },
+ { .compatible = "idt,8a34013" },
+ { .compatible = "idt,8a34014" },
+ { .compatible = "idt,8a34015" },
+ { .compatible = "idt,8a34016" },
+ { .compatible = "idt,8a34017" },
+ { .compatible = "idt,8a34018" },
+ { .compatible = "idt,8a34019" },
+ { .compatible = "idt,8a34040" },
+ { .compatible = "idt,8a34041" },
+ { .compatible = "idt,8a34042" },
+ { .compatible = "idt,8a34043" },
+ { .compatible = "idt,8a34044" },
+ { .compatible = "idt,8a34045" },
+ { .compatible = "idt,8a34046" },
+ { .compatible = "idt,8a34047" },
+ { .compatible = "idt,8a34048" },
+ { .compatible = "idt,8a34049" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, idtcm_dt_id);
+#endif
+
+static const struct i2c_device_id idtcm_i2c_id[] = {
+ { "8a34000" },
+ { "8a34001" },
+ { "8a34002" },
+ { "8a34003" },
+ { "8a34004" },
+ { "8a34005" },
+ { "8a34006" },
+ { "8a34007" },
+ { "8a34008" },
+ { "8a34009" },
+ { "8a34010" },
+ { "8a34011" },
+ { "8a34012" },
+ { "8a34013" },
+ { "8a34014" },
+ { "8a34015" },
+ { "8a34016" },
+ { "8a34017" },
+ { "8a34018" },
+ { "8a34019" },
+ { "8a34040" },
+ { "8a34041" },
+ { "8a34042" },
+ { "8a34043" },
+ { "8a34044" },
+ { "8a34045" },
+ { "8a34046" },
+ { "8a34047" },
+ { "8a34048" },
+ { "8a34049" },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, idtcm_i2c_id);
+
+static struct i2c_driver idtcm_driver = {
+ .driver = {
+ .of_match_table = of_match_ptr(idtcm_dt_id),
+ .name = "idtcm",
+ },
+ .probe = idtcm_probe,
+ .remove = idtcm_remove,
+ .id_table = idtcm_i2c_id,
+};
+
+module_i2c_driver(idtcm_driver);
diff --git a/drivers/ptp/ptp_clockmatrix.h b/drivers/ptp/ptp_clockmatrix.h
new file mode 100644
index 0000000..6c1f93a
--- /dev/null
+++ b/drivers/ptp/ptp_clockmatrix.h
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * PTP hardware clock driver for the IDT ClockMatrix(TM) family of timing and
+ * synchronization devices.
+ *
+ * Copyright (C) 2019 Integrated Device Technology, Inc., a Renesas Company.
+ */
+#ifndef PTP_IDTCLOCKMATRIX_H
+#define PTP_IDTCLOCKMATRIX_H
+
+#include <linux/ktime.h>
+
+#include "idt8a340_reg.h"
+
+#define FW_FILENAME "idtcm.bin"
+#define MAX_PHC_PLL 4
+
+#define PLL_MASK_ADDR (0xFFA5)
+#define DEFAULT_PLL_MASK (0x04)
+
+#define SET_U16_LSB(orig, val8) (orig = (0xff00 & (orig)) | (val8))
+#define SET_U16_MSB(orig, val8) (orig = (0x00ff & (orig)) | (val8 << 8))
+
+#define OUTPUT_MASK_PLL0_ADDR (0xFFB0)
+#define OUTPUT_MASK_PLL1_ADDR (0xFFB2)
+#define OUTPUT_MASK_PLL2_ADDR (0xFFB4)
+#define OUTPUT_MASK_PLL3_ADDR (0xFFB6)
+
+#define DEFAULT_OUTPUT_MASK_PLL0 (0x003)
+#define DEFAULT_OUTPUT_MASK_PLL1 (0x00c)
+#define DEFAULT_OUTPUT_MASK_PLL2 (0x030)
+#define DEFAULT_OUTPUT_MASK_PLL3 (0x0c0)
+
+#define POST_SM_RESET_DELAY_MS (3000)
+#define PHASE_PULL_IN_THRESHOLD_NS (150000)
+#define TOD_WRITE_OVERHEAD_COUNT_MAX (5)
+#define TOD_BYTE_COUNT (11)
+
+/* Values of DPLL_N.DPLL_MODE.PLL_MODE */
+enum pll_mode {
+ PLL_MODE_MIN = 0,
+ PLL_MODE_NORMAL = PLL_MODE_MIN,
+ PLL_MODE_WRITE_PHASE = 1,
+ PLL_MODE_WRITE_FREQUENCY = 2,
+ PLL_MODE_GPIO_INC_DEC = 3,
+ PLL_MODE_SYNTHESIS = 4,
+ PLL_MODE_PHASE_MEASUREMENT = 5,
+ PLL_MODE_MAX = PLL_MODE_PHASE_MEASUREMENT,
+};
+
+enum hw_tod_write_trig_sel {
+ HW_TOD_WR_TRIG_SEL_MIN = 0,
+ HW_TOD_WR_TRIG_SEL_MSB = HW_TOD_WR_TRIG_SEL_MIN,
+ HW_TOD_WR_TRIG_SEL_RESERVED = 1,
+ HW_TOD_WR_TRIG_SEL_TOD_PPS = 2,
+ HW_TOD_WR_TRIG_SEL_IRIGB_PPS = 3,
+ HW_TOD_WR_TRIG_SEL_PWM_PPS = 4,
+ HW_TOD_WR_TRIG_SEL_GPIO = 5,
+ HW_TOD_WR_TRIG_SEL_FOD_SYNC = 6,
+ WR_TRIG_SEL_MAX = HW_TOD_WR_TRIG_SEL_FOD_SYNC,
+};
+
+struct idtcm;
+
+struct idtcm_channel {
+ struct ptp_clock_info caps;
+ struct ptp_clock *ptp_clock;
+ struct idtcm *idtcm;
+ u16 dpll_phase;
+ u16 dpll_freq;
+ u16 dpll_n;
+ u16 dpll_ctrl_n;
+ u16 dpll_phase_pull_in;
+ u16 tod_read_primary;
+ u16 tod_write;
+ u16 tod_n;
+ u16 hw_dpll_n;
+ enum pll_mode pll_mode;
+ u16 output_mask;
+};
+
+struct idtcm {
+ struct idtcm_channel channel[MAX_PHC_PLL];
+ struct i2c_client *client;
+ u8 page_offset;
+ u8 pll_mask;
+
+ /* Overhead calculation for adjtime */
+ u8 calculate_overhead_flag;
+ s64 tod_write_overhead_ns;
+ ktime_t start_time;
+
+ /* Protects I2C read/modify/write registers from concurrent access */
+ struct mutex reg_lock;
+};
+
+struct idtcm_fwrc {
+ u8 hiaddr;
+ u8 loaddr;
+ u8 value;
+ u8 reserved;
+} __packed;
+
+#endif /* PTP_IDTCLOCKMATRIX_H */
--
2.7.4