[PATCH net-next v5 7/7] ptp: ocp: Add Time Card V9 I2C peripheral topology

[Ahmad Byagowi]

Time Card V9 boards use the same mux infrastructure with a BME280,
a BNO055, and an IS32FL3207 at a different address.

Describe six RGB groups. The first two expose the GNSS1 and GNSS2
status LEDs on outputs 0 through 5; the remaining four expose the SMA
indicator LEDs on outputs 6 through 17.

Select the profile only when the fixed-width board ID exactly matches
TIMECARD-V9 with zero or erased-byte padding. Older revisions share the
detectable I2C devices but not the V9 LED wiring.

Signed-off-by: Ahmad Byagowi <ahmadexp@xxxxxxxxx>
---
 drivers/ptp/ptp_ocp.c | 87 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 5ae50ad83bda..5100278f164d 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -643,6 +643,73 @@ static const struct ptp_ocp_i2c_profile ptp_ocp_r4006_profile = {
 	.led_max_microamp = 8150,
 };
 
+static const struct ptp_ocp_i2c_device ptp_ocp_v9_sensors[] = {
+	{ "pressure@76", "bosch,bme280", "bme280", 1, 0x76 },
+	{ "imu@29", "bosch,bno055", "bno055", 1, 0x29 },
+};
+
+static const struct ptp_ocp_led ptp_ocp_v9_leds[] = {
+	{
+		.node_name = "multi-led@0",
+		.function = LED_FUNCTION_STATUS,
+		.function_enumerator = 1,
+		.has_function_enumerator = true,
+		.channel = { 0, 1, 2 },
+	},
+	{
+		.node_name = "multi-led@3",
+		.function = LED_FUNCTION_STATUS,
+		.function_enumerator = 2,
+		.has_function_enumerator = true,
+		.channel = { 3, 4, 5 },
+	},
+	{
+		.node_name = "multi-led@6",
+		.function = LED_FUNCTION_INDICATOR,
+		.function_enumerator = 1,
+		.has_function_enumerator = true,
+		.channel = { 6, 7, 8 },
+	},
+	{
+		.node_name = "multi-led@9",
+		.function = LED_FUNCTION_INDICATOR,
+		.function_enumerator = 2,
+		.has_function_enumerator = true,
+		.channel = { 9, 10, 11 },
+	},
+	{
+		.node_name = "multi-led@c",
+		.function = LED_FUNCTION_INDICATOR,
+		.function_enumerator = 3,
+		.has_function_enumerator = true,
+		.channel = { 12, 13, 14 },
+	},
+	{
+		.node_name = "multi-led@f",
+		.function = LED_FUNCTION_INDICATOR,
+		.function_enumerator = 4,
+		.has_function_enumerator = true,
+		.channel = { 15, 16, 17 },
+	},
+};
+
+static_assert(ARRAY_SIZE(ptp_ocp_v9_sensors) <=
+	      OCP_I2C_MAX_SENSOR_COUNT);
+static_assert(ARRAY_SIZE(ptp_ocp_v9_leds) <= OCP_I2C_MAX_LED_COUNT);
+
+static const struct ptp_ocp_i2c_profile ptp_ocp_v9_profile = {
+	.name = "v9",
+	.sensors = ptp_ocp_v9_sensors,
+	.sensor_count = ARRAY_SIZE(ptp_ocp_v9_sensors),
+	.leds = ptp_ocp_v9_leds,
+	.led_count = ARRAY_SIZE(ptp_ocp_v9_leds),
+	.led_node_name = "led-controller@37",
+	.led_mux_channel = 1,
+	.led_address = 0x37,
+	.led_riset_ohms = 4700,
+	.led_max_microamp = 8100,
+};
+
 #define bp_assign_entry(bp, res, val) ({				\
 	uintptr_t addr = (uintptr_t)(bp) + (res)->bp_offset;		\
 	*(typeof(val) *)addr = val;					\
@@ -2243,6 +2310,22 @@ ptp_ocp_i2c_supported(struct ptp_ocp *bp)
 		bp->pdev->device == PCI_DEVICE_ID_CELESTICA_TIMECARD);
 }
 
+static bool
+ptp_ocp_board_id_matches(const u8 *board_id, const char *id)
+{
+	size_t len = strlen(id);
+	unsigned int i;
+
+	if (len > OCP_BOARD_ID_LEN || memcmp(board_id, id, len))
+		return false;
+
+	for (i = len; i < OCP_BOARD_ID_LEN; i++)
+		if (board_id[i] != 0 && board_id[i] != 0xff)
+			return false;
+
+	return true;
+}
+
 static const struct ptp_ocp_i2c_profile *
 ptp_ocp_i2c_select_profile(struct ptp_ocp *bp)
 {
@@ -2254,6 +2337,10 @@ ptp_ocp_i2c_select_profile(struct ptp_ocp *bp)
 	if (!memcmp(bp->board_id, "R4006", 5))
 		return &ptp_ocp_r4006_profile;
 
+	/* Older revisions share V9's I2C devices but not its LED wiring. */
+	if (ptp_ocp_board_id_matches(bp->board_id, "TIMECARD-V9"))
+		return &ptp_ocp_v9_profile;
+
 	return NULL;
 }
 
-- 
2.50.1 (Apple Git-155)