firmware/br-ext-chip-ingenic/board/t40/kernel/patches/00000-include_linux_mfd_ingenic-tcu.h.patch

diff -drupN a/include/linux/mfd/ingenic-tcu.h b/include/linux/mfd/ingenic-tcu.h
--- a/include/linux/mfd/ingenic-tcu.h	1970-01-01 03:00:00.000000000 +0300
+++ b/include/linux/mfd/ingenic-tcu.h	2022-06-09 05:02:35.000000000 +0300
@@ -0,0 +1,202 @@
+#ifndef __INGENIC_TCU_H__
+#define __INGENIC_TCU_H__
+
+#include <dt-bindings/clock/ingenic-tcu.h>
+
+#define NR_TCU_CHNS TCU_NR_IRQS
+
+enum irq_bit {
+	FULL_BIT,
+	HALF_BIT,
+};
+enum tcu_prescale {
+	TCU_PRESCALE_1,
+	TCU_PRESCALE_4,
+	TCU_PRESCALE_16,
+	TCU_PRESCALE_64,
+	TCU_PRESCALE_256,
+	TCU_PRESCALE_1024
+};
+
+enum tcu_clksrc {
+	TCU_CLKSRC_PCK = 1,
+	TCU_CLKSRC_RTC = 2,
+	TCU_CLKSRC_EXT = 4
+};
+
+enum tcu_irq_type {
+	NULL_IRQ_MODE,
+	FULL_IRQ_MODE,
+	HALF_IRQ_MODE,
+	FULL_HALF_IRQ_MODE,
+};
+
+struct info_bits {
+	unsigned int id:CHANNEL_BASE_OFF*2;
+	unsigned int mode:CHANNEL_BASE_OFF;
+	unsigned int func:CHANNEL_BASE_OFF;
+	unsigned int pwmin:CHANNEL_BASE_OFF;
+};
+
+struct ingenic_tcu_chn {
+	union {
+		unsigned int chn_info;
+		struct info_bits cib;
+	};
+    unsigned int index;
+	char virq[2];
+	char irq_type;
+	char clk_src;
+
+	char clk_div;
+	char init_level;
+	char shutdown_mode;
+	char pwm_bapass_mode;
+
+	char is_pwm;
+	char is_count_clear;
+	char pwm_in_en;
+	char work_sleep;
+
+	int half_num;
+	int full_num;
+	struct device_node *np;
+	void (*enable)(int id);
+	void (*disable)(int id);
+};
+
+void tcu_start_counter(int id);
+void tcu_stop_counter(int id);
+void tcu_set_counter(int id, unsigned int val);
+int tcu_get_counter(int id);
+void tcu_enable_counter(int id);
+void tcu_disable_counter(int id);
+
+/**
+ * ingenic_tcu_set_full_num - set the number of tcu Timer Data FULL Register (TDFR)
+ *
+ * @id:		tcu channel id.
+ * @full_num:	the number of set TDFR.
+ *
+ */
+void ingenic_tcu_set_period(int id, uint16_t period);
+/**
+ * ingenic_tcu_set_half_num - set the number of tcu Timer Data FULL Register (TDHR)
+ *
+ * @id:		tcu channel id.
+ * @half_num:	the number of set TDFR.
+ *
+ */
+void ingenic_tcu_set_duty(int id, uint16_t duty);
+/**
+ * ingenic_tcu_set_prescale - set clk div of TCU prescale.
+ * Don‘t call the function  when the channel is running.
+ *
+ * @id:		tcu channel id.
+ * @prescale:	the div of clk value.
+ *
+ */
+void ingenic_tcu_set_prescale(int id, enum tcu_prescale prescale);
+/**
+ * ingenic_tcu_set_pwm_output_init_level - set an initial output level for PWM output.
+ *
+ * @id:		tcu channel id.
+ * @level:	0 LOW, 1 HIGH.
+ *
+ */
+void ingenic_tcu_set_pwm_output_init_level(int id, int level);
+/**
+ * ingenic_tcu_set_clksrc - set clk soruce of the timer clock input.
+ * Don‘t call the function  when the channel is running.
+ *
+ * @id:		tcu channel id.
+ * @src:	the clk source;0 PCLK, 1 RTC, 2 EXT.
+ *
+ */
+void ingenic_tcu_set_clksrc(int id, enum tcu_clksrc src);
+/**
+ * ingenic_tcu_channel_to_virq - get virtual irq though to tcu channel id
+ * (channel 0 ~ 4, 6 ~ 7 use common hardware irq(TCU2))
+ *
+ * @tcu_chn: the struct of request cell(TCU channel).
+ *
+ * Search for a virq in a irq domain and save irq to struct ingenic_tcu_chn
+ * ->virq[2].
+ */
+void ingenic_tcu_channel_to_virq(struct ingenic_tcu_chn *tcu_chn);
+/**
+ * ingenic_tcu_get_count - get the value of the timer counter (TCNT).
+ *
+ * @id:		tcu channel id.
+ *
+ * Returns number of timer counter on sucess,
+ * -EINVAL if The value read from counter 1 or 2 is a false value.
+ *
+ */
+int ingenic_tcu_get_count(int id);
+/**
+ * ingenic_tcu_config - init the current channel struct.
+ *
+ * @tcu_chn:		tcu channel struct.
+ *
+ * Returns 0 on sucess,
+ * Returns < 0 if init failed.
+ *
+ */
+int ingenic_tcu_config(struct ingenic_tcu_chn *tcu_chn);
+/**
+ * ingenic_tcu_counter_begin - begin counting up, if channel function is pwm, enable pwm.
+ *
+ * @tcu_chn:		tcu channel struct.
+ *
+ */
+int ingenic_tcu_counter_begin(struct ingenic_tcu_chn *tcu_chn);
+/**
+ * ingenic_tcu_counter_stop - stop counting up, if channel function is pwm, disable pwm.
+ *
+ * @tcu_chn:		tcu channel struct.
+ *
+ * Explain：
+ * TCU count stop, is the next stop after match, not immediately stop.
+ * If you want to stop immediately, you can use cell->disable.
+ *
+ */
+void ingenic_tcu_counter_stop(struct ingenic_tcu_chn *tcu_chn);
+
+/**
+ * ingenic_watchdog_set_count - setwatchdog timer counter.
+ * This function is only used for watchdog.
+ *
+ * @value:		the number of set watchdog counter.
+ *
+ */
+void ingenic_watchdog_set_count(unsigned int value);
+/**
+ * ingenic_watchdog_config - init watchdog.
+ * This function is only used for watchdog.
+ *
+ * @tcsr_val:		the number of set watchdog TCSR.
+ * @timeout_value:		the number of set watchdog TCNT.
+ *
+ */
+void ingenic_watchdog_config(unsigned int tcsr_val, unsigned int timeout_value);
+
+/**
+ * request_cell - request tcu channel cell.
+ *
+ * @id:		tcu channel id.
+ *
+ * Returns struct cell on sucess,
+ * NULL if The channel busy.
+ *
+ */
+struct mfd_cell *request_cell(int id);
+/**
+ * free_cell - free tcu channel cell.
+ *
+ * @id:		tcu channel id.
+ *
+ */
+void free_cell(int id);
+
+#endif /* __INGENIC_TCU_H__ */