os/arch/arm/src/amebasmart: I2C/I2S integrate with PM

- Prepare pre/post sleep process for I2C/I2S

os/arch/arm/src/amebasmart/amebasmart_i2c.c

@@ -1226,3 +1226,50 @@ int up_i2creset(FAR struct i2c_dev_s *dev)
 	return 0;
 }
 #endif							/* CONFIG_I2C_RESET */
+
+/****************************************************************************
+ * Name: rtk_i2c_suspend/resume
+ *
+ * Description:
+ *   Suspend or resume i2c peripherals for/from sleep modes.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+static uint32_t rtk_i2c_suspend(uint32_t expected_idle_time, void *param)
+{
+	(void)expected_idle_time;
+	(void)param;
+
+	/* Need to destroy semaphore and release i2c object to prevent memory leak */
+#ifdef CONFIG_AMEBASMART_I2C1
+	up_i2cuninitialize(&amebasmart_i2c1_priv);
+#endif
+#ifdef CONFIG_AMEBASMART_I2C2
+	up_i2cuninitialize(&amebasmart_i2c2_priv);
+#endif
+	return 1;
+}
+
+static uint32_t rtk_i2c_resume(uint32_t expected_idle_time, void *param)
+{
+	(void)expected_idle_time;
+	(void)param;
+	/* For PG Sleep, I2C 1/2 HW will be lost power, thus a reinitialization is required here 
+	I2C0 is under SYSON block, so it will not require to be reinitialized*/
+#ifdef CONFIG_AMEBASMART_I2C1
+	(void) up_i2cinitialize(1);
+#endif
+#ifdef CONFIG_AMEBASMART_I2C2
+	(void) up_i2cinitialize(2);
+#endif
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_PM
+void i2c_pminitialize(void)
+{
+	pmu_register_sleep_callback(PMU_I2C_DEVICE, (PSM_HOOK_FUN)rtk_i2c_suspend, NULL, (PSM_HOOK_FUN)rtk_i2c_resume, NULL);
+}
+#endif

os/arch/arm/src/amebasmart/amebasmart_i2s.c

@@ -41,6 +41,9 @@
 #include <tinyara/wqueue.h>
 #include <tinyara/audio/audio.h>
 #include <tinyara/audio/i2s.h>
+#ifdef CONFIG_AUDIO_ALC1019
+#include <tinyara/audio/alc1019.h>
+#endif
 
 #include "irq/irq.h"
 
@@ -1706,7 +1709,7 @@ static int i2s_allocate_wd(struct amebasmart_i2s_s *priv)
  ****************************************************************************/
 
 /****************************************************************************
- * Name:
+ * Name: amebasmart_i2s_initialize
  *
  * Description:
  *   Initialize the selected i2s port
@@ -1809,3 +1812,86 @@ struct i2s_dev_s *amebasmart_i2s_initialize(uint16_t port)
 }
 #endif /* I2S_HAVE_RX || I2S_HAVE_TX */
 #endif /* CONFIG_AUDIO */
+
+#ifdef CONFIG_PM
+static void amebasmart_i2s_reinitialize(uint16_t port)
+{
+	struct amebasmart_i2s_config_s *hw_config_s = NULL;
+	struct amebasmart_i2s_s *priv;
+
+	/* Assign HW configuration */
+	if (port == I2S_NUM_2) {
+		hw_config_s = (struct amebasmart_i2s_config_s *)&amebasmart_i2s2_config;
+	} else if (port == I2S_NUM_3) {
+		hw_config_s = (struct amebasmart_i2s_config_s *)&amebasmart_i2s3_config;
+	} else {
+		i2serr("Please select I2S2 or I2S3 bus\n");
+		return NULL;
+	}
+
+	/* If we the I2S structure is NULL, we should have faced some problem */
+	DEBUGASSERT(g_i2sdevice[port] == NULL);
+
+	priv = g_i2sdevice[port];
+
+	/* Get default configuration */
+	i2s_getdefaultconfig(priv);
+
+	/* I2s object reinitialization */
+	i2s_init(&priv->i2s_object, hw_config_s->i2s_sclk_pin, hw_config_s->i2s_ws_pin, hw_config_s->i2s_sd_tx_pin, hw_config_s->i2s_sd_rx_pin, hw_config_s->i2s_mclk_pin);
+
+	/* Initialize buffering */
+#if defined(I2S_HAVE_TX) && (0 < I2S_HAVE_TX)
+	i2s_set_dma_buffer(&priv->i2s_object, (char *)priv->i2s_tx_buf, NULL, I2S_DMA_PAGE_NUM, I2S_DMA_PAGE_SIZE); /* Allocate DMA Buffer for TX */
+#endif
+
+	/* configures IRQ */
+#if defined(I2S_HAVE_RX) && (0 < I2S_HAVE_RX)
+	priv->rx_isr_handler = (i2s_irq_handler)&i2s_transfer_rx_handleirq;
+#endif
+
+#if defined(I2S_HAVE_TX) && (0 < I2S_HAVE_TX)
+	priv->tx_isr_handler = (i2s_irq_handler)&i2s_transfer_tx_handleirq;
+#endif
+
+	ret = amebasmart_i2s_isr_initialize(priv);
+	if (ret != OK) {
+		i2serr("I2S initialize: isr fails\n");
+		goto errout_with_alloc;
+	}
+
+	i2s_disable(&priv->i2s_object);
+}
+
+static uint32_t rtk_i2s_suspend(uint32_t expected_idle_time, void *param)
+{
+	(void)expected_idle_time;
+	(void)param;
+	/* Nothing to do here */
+
+	return 1;
+}
+
+static uint32_t rtk_i2s_resume(uint32_t expected_idle_time, void *param)
+{
+	(void)expected_idle_time;
+	(void)param;
+
+	/* For PG Sleep, I2S HW will be lost power, thus a reinitialization is required here */
+#ifdef CONFIG_AMEBASMART_I2S2
+	amebasmart_i2s_reinitialize(I2S_NUM_2);
+#endif
+#ifdef CONFIG_AMEBASMART_I2S3
+	amebasmart_i2s_reinitialize(I2S_NUM_3);
+#endif
+
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_PM
+void i2s_pminitialize(void)
+{
+	pmu_register_sleep_callback(PMU_I2S_DEVICE, (PSM_HOOK_FUN)rtk_i2s_suspend, NULL, (PSM_HOOK_FUN)rtk_i2s_resume, NULL);
+}
+#endif