Received-SPF: pass (google.com: domain of linux-kernel+bounces-8679-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
From: Sagi Maimon <maimon.sagi@gmail.com>
To: richardcochran@gmail.com,
	jonathan.lemon@gmail.com,
	vadfed@fb.com
Cc: netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	maimon.sagi@gmail.com
Subject: [PATCH v1] ptp: ocp: add Adva timecard support
Date: Thu, 21 Dec 2023 17:37:55 +0200
Message-Id: <20231221153755.2690-1-maimon.sagi@gmail.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Adding support for the Adva timecard.
The card uses different drivers to provide access to the
firmware SPI flash (Altera based).
Other parts of the code are the same and could be reused.

Signed-off-by: Sagi Maimon <maimon.sagi@gmail.com>
---
 drivers/ptp/ptp_ocp.c | 257 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 247 insertions(+), 10 deletions(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 4021d3d325f9..73e91b8a2887 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -34,6 +34,9 @@
 #define PCI_VENDOR_ID_OROLIA			0x1ad7
 #define PCI_DEVICE_ID_OROLIA_ARTCARD		0xa000
 
+#define PCI_VENDOR_ID_ADVA			0xad5a
+#define PCI_DEVICE_ID_ADVA_TIMECARD		0x0400
+
 static struct class timecard_class = {
 	.name		= "timecard",
 };
@@ -63,6 +66,13 @@ struct ocp_reg {
 	u32	status_drift;
 };
 
+struct servo_val {
+	u32	servo_offset_p_val;
+	u32	servo_offset_i_val;
+	u32	servo_drift_p_val;
+	u32	servo_drift_i_val;
+};
+
 #define OCP_CTRL_ENABLE		BIT(0)
 #define OCP_CTRL_ADJUST_TIME	BIT(1)
 #define OCP_CTRL_ADJUST_OFFSET	BIT(2)
@@ -401,6 +411,12 @@ static const struct ocp_attr_group fb_timecard_groups[];
 
 static const struct ocp_attr_group art_timecard_groups[];
 
+static int ptp_ocp_adva_board_init(struct ptp_ocp *bp, struct ocp_resource *r);
+
+static const struct ocp_attr_group adva_timecard_groups[];
+
+static const struct ocp_sma_op ocp_adva_sma_op;
+
 struct ptp_ocp_eeprom_map {
 	u16	off;
 	u16	len;
@@ -835,10 +851,122 @@ static struct ocp_resource ocp_art_resource[] = {
 	{ }
 };
 
+static struct ocp_resource ocp_adva_resource[] = {
+	{
+		OCP_MEM_RESOURCE(reg),
+		.offset = 0x01000000, .size = 0x10000,
+	},
+	{
+		OCP_EXT_RESOURCE(ts0),
+		.offset = 0x01010000, .size = 0x10000, .irq_vec = 1,
+		.extra = &(struct ptp_ocp_ext_info) {
+			.index = 0,
+			.irq_fcn = ptp_ocp_ts_irq,
+			.enable = ptp_ocp_ts_enable,
+		},
+	},
+	{
+		OCP_EXT_RESOURCE(ts1),
+		.offset = 0x01020000, .size = 0x10000, .irq_vec = 2,
+		.extra = &(struct ptp_ocp_ext_info) {
+			.index = 1,
+			.irq_fcn = ptp_ocp_ts_irq,
+			.enable = ptp_ocp_ts_enable,
+		},
+	},
+	{
+		OCP_EXT_RESOURCE(ts2),
+		.offset = 0x01060000, .size = 0x10000, .irq_vec = 6,
+		.extra = &(struct ptp_ocp_ext_info) {
+			.index = 2,
+			.irq_fcn = ptp_ocp_ts_irq,
+			.enable = ptp_ocp_ts_enable,
+		},
+	},
+	/* Timestamp for PHC and/or PPS generator */
+	{
+		OCP_EXT_RESOURCE(pps),
+		.offset = 0x010C0000, .size = 0x10000, .irq_vec = 0,
+		.extra = &(struct ptp_ocp_ext_info) {
+			.index = 5,
+			.irq_fcn = ptp_ocp_ts_irq,
+			.enable = ptp_ocp_ts_enable,
+		},
+	},
+	{
+		OCP_EXT_RESOURCE(signal_out[0]),
+		.offset = 0x010D0000, .size = 0x10000, .irq_vec = 11,
+		.extra = &(struct ptp_ocp_ext_info) {
+			.index = 1,
+			.irq_fcn = ptp_ocp_signal_irq,
+			.enable = ptp_ocp_signal_enable,
+		},
+	},
+	{
+		OCP_MEM_RESOURCE(pps_to_ext),
+		.offset = 0x01030000, .size = 0x10000,
+	},
+	{
+		OCP_MEM_RESOURCE(pps_to_clk),
+		.offset = 0x01040000, .size = 0x10000,
+	},
+	{
+		OCP_MEM_RESOURCE(tod),
+		.offset = 0x01050000, .size = 0x10000,
+	},
+	{
+		OCP_MEM_RESOURCE(image),
+		.offset = 0x00020000, .size = 0x1000,
+	},
+	{
+		OCP_MEM_RESOURCE(pps_select),
+		.offset = 0x00130000, .size = 0x1000,
+	},
+	{
+		OCP_MEM_RESOURCE(sma_map1),
+		.offset = 0x00140000, .size = 0x1000,
+	},
+	{
+		OCP_MEM_RESOURCE(sma_map2),
+		.offset = 0x00220000, .size = 0x1000,
+	},
+	{
+		OCP_SERIAL_RESOURCE(gnss_port),
+		.offset = 0x00160000 + 0x1000, .irq_vec = 3,
+		.extra = &(struct ptp_ocp_serial_port) {
+			.baud = 9600,
+		},
+	},
+	{
+			OCP_MEM_RESOURCE(freq_in[0]),
+			.offset = 0x01200000, .size = 0x10000,
+	},
+	{
+			OCP_SPI_RESOURCE(spi_flash),
+			.offset = 0x00310400, .size = 0x10000, .irq_vec = 9,
+			.extra = &(struct ptp_ocp_flash_info) {
+				.name = "spi_altera", .pci_offset = 0,
+				.data_size = sizeof(struct altera_spi_platform_data),
+				.data = &(struct altera_spi_platform_data) {
+					.num_chipselect = 1,
+					.num_devices = 1,
+					.devices = &(struct spi_board_info) {
+						.modalias = "spi-nor",
+					},
+				},
+			},
+	},
+	{
+		.setup = ptp_ocp_adva_board_init,
+	},
+	{ }
+};
+
 static const struct pci_device_id ptp_ocp_pcidev_id[] = {
 	{ PCI_DEVICE_DATA(FACEBOOK, TIMECARD, &ocp_fb_resource) },
 	{ PCI_DEVICE_DATA(CELESTICA, TIMECARD, &ocp_fb_resource) },
 	{ PCI_DEVICE_DATA(OROLIA, ARTCARD, &ocp_art_resource) },
+	{ PCI_DEVICE_DATA(ADVA, TIMECARD, &ocp_adva_resource) },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, ptp_ocp_pcidev_id);
@@ -917,6 +1045,27 @@ static const struct ocp_selector ptp_ocp_art_sma_out[] = {
 	{ }
 };
 
+static const struct ocp_selector ptp_ocp_adva_sma_in[] = {
+	{ .name = "10Mhz",	.value = 0x0000,      .frequency = 10000000},
+	{ .name = "PPS1",	.value = 0x0001,      .frequency = 1 },
+	{ .name = "PPS2",	.value = 0x0002,      .frequency = 1 },
+	{ .name = "TS1",	.value = 0x0004,      .frequency = 0 },
+	{ .name = "TS2",	.value = 0x0008,      .frequency = 0 },
+	{ .name = "FREQ1",	.value = 0x0100,      .frequency = 0 },
+	{ .name = "None",	.value = SMA_DISABLE, .frequency = 0 },
+	{ }
+};
+
+static const struct ocp_selector ptp_ocp_adva_sma_out[] = {
+	{ .name = "10Mhz",	.value = 0x0000,  .frequency = 10000000},
+	{ .name = "PHC",	.value = 0x0001,  .frequency = 1 },
+	{ .name = "GNSS1",	.value = 0x0004,  .frequency = 1 },
+	{ .name = "GEN1",	.value = 0x0040 },
+	{ .name = "GND",	.value = 0x2000 },
+	{ .name = "VCC",	.value = 0x4000 },
+	{ }
+};
+
 struct ocp_sma_op {
 	const struct ocp_selector *tbl[2];
 	void (*init)(struct ptp_ocp *bp);
@@ -1363,20 +1512,20 @@ ptp_ocp_estimate_pci_timing(struct ptp_ocp *bp)
 }
 
 static int
-ptp_ocp_init_clock(struct ptp_ocp *bp)
+ptp_ocp_init_clock(struct ptp_ocp *bp, struct servo_val *servo_vals)
 {
 	struct timespec64 ts;
 	u32 ctrl;
 
+
 	ctrl = OCP_CTRL_ENABLE;
 	iowrite32(ctrl, &bp->reg->ctrl);
 
-	/* NO DRIFT Correction */
-	/* offset_p:i 1/8, offset_i: 1/16, drift_p: 0, drift_i: 0 */
-	iowrite32(0x2000, &bp->reg->servo_offset_p);
-	iowrite32(0x1000, &bp->reg->servo_offset_i);
-	iowrite32(0,	  &bp->reg->servo_drift_p);
-	iowrite32(0,	  &bp->reg->servo_drift_i);
+	/* servo configuration */
+	iowrite32(servo_vals->servo_offset_p_val, &bp->reg->servo_offset_p);
+	iowrite32(servo_vals->servo_offset_i_val, &bp->reg->servo_offset_i);
+	iowrite32(servo_vals->servo_drift_p_val, &bp->reg->servo_drift_p);
+	iowrite32(servo_vals->servo_drift_p_val, &bp->reg->servo_drift_i);
 
 	/* latch servo values */
 	ctrl |= OCP_CTRL_ADJUST_SERVO;
@@ -2362,6 +2511,14 @@ static const struct ocp_sma_op ocp_fb_sma_op = {
 	.set_output	= ptp_ocp_sma_fb_set_output,
 };
 
+static const struct ocp_sma_op ocp_adva_sma_op = {
+	.tbl		= { ptp_ocp_adva_sma_in, ptp_ocp_adva_sma_out },
+	.init		= ptp_ocp_sma_fb_init,
+	.get		= ptp_ocp_sma_fb_get,
+	.set_inputs	= ptp_ocp_sma_fb_set_inputs,
+	.set_output	= ptp_ocp_sma_fb_set_output,
+};
+
 static int
 ptp_ocp_set_pins(struct ptp_ocp *bp)
 {
@@ -2420,6 +2577,7 @@ static int
 ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
 {
 	int err;
+	struct servo_val servo_vals;
 
 	bp->flash_start = 1024 * 4096;
 	bp->eeprom_map = fb_eeprom_map;
@@ -2441,7 +2599,14 @@ ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
 		return err;
 	ptp_ocp_sma_init(bp);
 
-	return ptp_ocp_init_clock(bp);
+	/* NO DRIFT Correction */
+	/* offset_p:i 1/8, offset_i: 1/16, drift_p: 0, drift_i: 0 */
+	servo_vals.servo_offset_p_val = 0x2000;
+	servo_vals.servo_offset_i_val = 0x1000;
+	servo_vals.servo_drift_p_val = 0;
+	servo_vals.servo_drift_p_val = 0;
+
+	return ptp_ocp_init_clock(bp, &servo_vals);
 }
 
 static bool
@@ -2583,6 +2748,7 @@ static int
 ptp_ocp_art_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
 {
 	int err;
+	struct servo_val servo_vals;
 
 	bp->flash_start = 0x1000000;
 	bp->eeprom_map = art_eeprom_map;
@@ -2603,7 +2769,49 @@ ptp_ocp_art_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
 	if (err)
 		return err;
 
-	return ptp_ocp_init_clock(bp);
+	/* NO DRIFT Correction */
+	/* offset_p:i 1/8, offset_i: 1/16, drift_p: 0, drift_i: 0 */
+	servo_vals.servo_offset_p_val = 0x2000;
+	servo_vals.servo_offset_i_val = 0x1000;
+	servo_vals.servo_drift_p_val = 0;
+	servo_vals.servo_drift_p_val = 0;
+
+	return ptp_ocp_init_clock(bp, &servo_vals);
+}
+
+/* ADVA specific board initializers; last "resource" registered. */
+static int
+ptp_ocp_adva_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+	int err;
+	struct servo_val servo_vals;
+
+	bp->flash_start = 0xA00000;
+	bp->fw_version = ioread32(&bp->image->version);
+	bp->sma_op = &ocp_adva_sma_op;
+
+	ptp_ocp_fb_set_version(bp);
+
+	ptp_ocp_tod_init(bp);
+	ptp_ocp_nmea_out_init(bp);
+	ptp_ocp_signal_init(bp);
+
+	err = ptp_ocp_attr_group_add(bp, adva_timecard_groups);
+	if (err)
+		return err;
+
+	err = ptp_ocp_set_pins(bp);
+	if (err)
+		return err;
+	ptp_ocp_sma_init(bp);
+
+	/* offset_p:i 3/4, offset_i: 1/16, drift_p: 0, drift_i: 0 */
+	servo_vals.servo_offset_p_val = 0xc000;
+	servo_vals.servo_offset_i_val = 0x1000;
+	servo_vals.servo_drift_p_val = 0;
+	servo_vals.servo_drift_p_val = 0;
+
+	return ptp_ocp_init_clock(bp, &servo_vals);
 }
 
 static ssize_t
@@ -3578,6 +3786,35 @@ static const struct ocp_attr_group art_timecard_groups[] = {
 	{ },
 };
 
+static struct attribute *adva_timecard_attrs[] = {
+	&dev_attr_serialnum.attr,
+	&dev_attr_gnss_sync.attr,
+	&dev_attr_clock_source.attr,
+	&dev_attr_available_clock_sources.attr,
+	&dev_attr_sma1.attr,
+	&dev_attr_sma2.attr,
+	&dev_attr_sma3.attr,
+	&dev_attr_sma4.attr,
+	&dev_attr_available_sma_inputs.attr,
+	&dev_attr_available_sma_outputs.attr,
+	&dev_attr_clock_status_drift.attr,
+	&dev_attr_clock_status_offset.attr,
+	&dev_attr_ts_window_adjust.attr,
+	&dev_attr_tod_correction.attr,
+	NULL,
+};
+
+static const struct attribute_group adva_timecard_group = {
+	.attrs = adva_timecard_attrs,
+};
+
+static const struct ocp_attr_group adva_timecard_groups[] = {
+	{ .cap = OCP_CAP_BASIC,	    .group = &adva_timecard_group },
+	{ .cap = OCP_CAP_SIGNAL,    .group = &fb_timecard_signal0_group },
+	{ .cap = OCP_CAP_FREQ,	    .group = &fb_timecard_freq0_group },
+	{ },
+};
+
 static void
 gpio_input_map(char *buf, struct ptp_ocp *bp, u16 map[][2], u16 bit,
 	       const char *def)
@@ -4492,7 +4729,7 @@ ptp_ocp_remove(struct pci_dev *pdev)
 	cancel_delayed_work_sync(&bp->sync_work);
 	for (i = 0; i < OCP_SMA_NUM; i++) {
 		if (bp->sma[i].dpll_pin) {
-			dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, bp);
+			dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, &bp->sma[i]);
 			dpll_pin_put(bp->sma[i].dpll_pin);
 		}
 	}
-- 
2.26.3