init

2025-12-11 09:43:42 +08:00
commit d8b2974133
1822 changed files with 280037 additions and 0 deletions
--- a/sw_usb_audio/shared/cs2100.h
+++ b/sw_usb_audio/shared/cs2100.h
@@ -0,0 +1,93 @@
+#ifndef CS2100_I2C_DEVICE_ADDR
+#define CS2100_I2C_DEVICE_ADDR      (0x9c>>1)
+#endif
+
+#define CS2100_DEVICE_CONTROL       (0x02)
+#define CS2100_DEVICE_CONFIG_1      (0x03)
+#define CS2100_GLOBAL_CONFIG        (0x05)
+#define CS2100_RATIO_1              (0x06)
+#define CS2100_RATIO_2              (0x07)
+#define CS2100_RATIO_3              (0x08)
+#define CS2100_RATIO_4              (0x09)
+#define CS2100_FUNC_CONFIG_1        (0x16)
+#define CS2100_FUNC_CONFIG_2        (0x17)
+
+/* TODO this is a key frequency and should be moved into lib_xua */
+#if (XUA_SYNCMODE == XUA_SYNCMODE_SYNC)
+    #define PLL_SYNC_FREQ           (500)
+#else
+    #if (XUA_SPDIF_RX_EN || XUA_ADAT_RX_EN)
+    /* Choose a frequency the xcore can easily generate internally */
+    #define PLL_SYNC_FREQ           (300)
+    #else
+    #define PLL_SYNC_FREQ           (1000000)
+    #endif
+#endif
+
+#ifndef CS2100_REGREAD
+#define CS2100_REGREAD(reg, data)  {data[0] = i2c.read_reg(CS2100_I2C_DEVICE_ADDR, reg, result);}
+#endif
+
+#ifndef CS2100_REGREAD_ASSERT
+#define CS2100_REGREAD_ASSERT(reg, data, expected)  {data[0] = i2c.read_reg(CS2100_I2C_DEVICE_ADDR, reg, result); assert(data[0] == expected);}
+#endif
+
+#ifndef CS2100_REGWRITE
+#define CS2100_REGWRITE(reg, val) {result = i2c.write_reg(CS2100_I2C_DEVICE_ADDR, reg, val);}
+#endif
+
+#ifndef UNSAFE
+#define UNSAFE
+#endif
+
+
+/* Init of CS2100 */
+void PllInit(UNSAFE client interface i2c_master_if i2c)
+{
+    UNSAFE
+    {
+    unsigned char data[1] = {0};
+    i2c_regop_res_t result;
+
+    /* Enable init */
+    CS2100_REGWRITE(CS2100_DEVICE_CONFIG_1, 0x07);
+    CS2100_REGWRITE(CS2100_GLOBAL_CONFIG, 0x01);
+    CS2100_REGWRITE(CS2100_FUNC_CONFIG_1, 0x08);
+    CS2100_REGWRITE(CS2100_FUNC_CONFIG_2, 0x00); //0x10 for always gen clock even when unlocked
+
+    /* Read back and check */
+    CS2100_REGREAD_ASSERT(CS2100_DEVICE_CONFIG_1, data, 0x07);
+    CS2100_REGREAD_ASSERT(CS2100_GLOBAL_CONFIG, data, 0x01);
+    CS2100_REGREAD_ASSERT(CS2100_FUNC_CONFIG_1, data, 0x08);
+    CS2100_REGREAD_ASSERT(CS2100_FUNC_CONFIG_2, data, 0x00);
+
+    //i2c.shutdown();
+    }
+}
+
+/* Setup PLL multiplier */
+void PllMult(unsigned output, unsigned ref, UNSAFE client interface i2c_master_if i2c)
+{
+    UNSAFE
+
+    {
+    unsigned char data[1] = {0};
+    i2c_regop_res_t result;
+
+    /* PLL expects 12:20 format, convert output and ref to 12:20 */
+    /* Shift up the dividend by 12 to retain format... */
+    unsigned mult = (unsigned) ((((unsigned long long)output) << 32) / (((unsigned long long)ref) << 20));
+
+    CS2100_REGWRITE(CS2100_RATIO_1, (mult >> 24) & 0xFF);
+    CS2100_REGWRITE(CS2100_RATIO_2, (mult >> 16) & 0xFF);
+    CS2100_REGWRITE(CS2100_RATIO_3, (mult >> 8) & 0xFF);
+    CS2100_REGWRITE(CS2100_RATIO_4, (mult & 0xFF));
+
+	/* Read back and check */
+    CS2100_REGREAD_ASSERT(CS2100_RATIO_1, data, ((mult >> 24) & 0xFF));
+    CS2100_REGREAD_ASSERT(CS2100_RATIO_2, data, ((mult >> 16) & 0xFF));
+    CS2100_REGREAD_ASSERT(CS2100_RATIO_3, data, ((mult >> 8) & 0xFF));
+    CS2100_REGREAD_ASSERT(CS2100_RATIO_4, data, (mult & 0xFF));
+    }
+}
+