On some BYT PLatform the PWM is controlled using CRC PMIC. Add a lookup
entry for the same to be used by the consumer (Intel GFX)
CC: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Alexandre Courbot <gnurou@xxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
---
drivers/mfd/intel_soc_pmic_core.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
index 365d5de..b140e3c 100644
--- a/drivers/mfd/intel_soc_pmic_core.c
+++ b/drivers/mfd/intel_soc_pmic_core.c
@@ -25,6 +25,7 @@
#include <linux/regmap.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/gpio/machine.h>
+#include <linux/pwm.h>
#include "intel_soc_pmic_core.h"
/* Lookup table for the Panel Enable/Disable line as GPIO signals */
@@ -37,6 +38,11 @@ struct gpiod_lookup_table panel_gpio_table = {
},
};
+/* PWM consumed by the Intel GFX */
+static struct pwm_lookup crc_pwm_lookup[] = {
+ PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_backlight", 0, PWM_POLARITY_NORMAL),
+};
+
/*
* On some boards the PMIC interrupt may come from a GPIO line.
* Try to lookup the ACPI table and see if such connection exists. If not,
@@ -99,6 +105,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
/* Add lookup table binding for Panel Control to the GPIO Chip */
gpiod_add_lookup_table(&panel_gpio_table);
+ /* Add lookup table for crc-pwm */
+ pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup));
+
ret = mfd_add_devices(dev, -1, config->cell_dev,
config->n_cell_devs, NULL, 0,
regmap_irq_get_domain(pmic->irq_chip_data));
--
2.1.0
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