[PATCH net-next v3 5/5] ptp: ocp: Add Time Card V9 I2C peripheral topology

[Ahmad Byagowi]

Time Card V9 places a BME280 at 0x76, a BNO055 at 0x29, and an
IS32FL3207 at 0x37 on PCA9546 channel 1.

Describe GNSS1 and GNSS2 as RGB LEDs on outputs 0 through 5 and SMA1
through SMA4 on outputs 6 through 17. The board uses a 4.7 kohm RISET
resistor, sequential red, green, and blue output wiring, and an 8100 uA
per-output limit.

Select this profile only for the exact fixed-width EEPROM ID
"TIMECARD-V9". Earlier revisions expose the same I2C devices with
different LED routing, so probing cannot distinguish them safely. Leave
erased, malformed, and unknown board IDs unconfigured.

Signed-off-by: Ahmad Byagowi <ahmadexp@xxxxxxxxx>
---
 drivers/ptp/ptp_ocp.c | 73 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 72 insertions(+), 1 deletion(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index f2c2979daaf1..a843198796ab 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -353,7 +353,7 @@ struct ptp_ocp_serial_port {
 
 #define OCP_I2C_MUX_CHANNELS		4
 #define OCP_I2C_MAX_SENSOR_COUNT	5
-#define OCP_I2C_MAX_LED_COUNT		5
+#define OCP_I2C_MAX_LED_COUNT		6
 #define OCP_I2C_MAX_LED_COMPONENT_COUNT	(3 * OCP_I2C_MAX_LED_COUNT)
 #define OCP_I2C_MUX_NAME_LEN		32
 #define OCP_I2C_MUX_COMPATIBLE		"nxp,pca9546"
@@ -613,9 +613,61 @@ static const struct ptp_ocp_led ptp_ocp_r4006_leds[] = {
 	},
 };
 
+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_r4006_sensors) <=
 	      OCP_I2C_MAX_SENSOR_COUNT);
 static_assert(ARRAY_SIZE(ptp_ocp_r4006_leds) <= OCP_I2C_MAX_LED_COUNT);
+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_r4006_profile = {
 	.name = "r4006",
@@ -630,6 +682,19 @@ static const struct ptp_ocp_i2c_profile ptp_ocp_r4006_profile = {
 	.led_max_microamp = 8150,
 };
 
+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;					\
@@ -2230,6 +2295,7 @@ static const struct ptp_ocp_i2c_profile *
 ptp_ocp_i2c_select_profile(struct ptp_ocp *bp)
 {
 	static const char r4006_id[] = "R4006";
+	static const char v9_id[] = "TIMECARD-V9";
 	size_t board_id_len;
 
 	if (!ptp_ocp_has_eeprom_data(bp))
@@ -2242,6 +2308,11 @@ ptp_ocp_i2c_select_profile(struct ptp_ocp *bp)
 	    !memcmp(bp->board_id, r4006_id, sizeof(r4006_id) - 1))
 		return &ptp_ocp_r4006_profile;
 
+	/* Older revisions share V9's I2C devices but not its LED wiring. */
+	if (board_id_len == sizeof(v9_id) - 1 &&
+	    !memcmp(bp->board_id, v9_id, sizeof(v9_id) - 1))
+		return &ptp_ocp_v9_profile;
+
 	return NULL;
 }
 
-- 
2.50.1 (Apple Git-155)