imx233/fuze+: set a few recommended power bits by Freescale, remove some uneeded headers, implement audio path selection for playback and radio

Change-Id: If926ead9b776504a58eb102fcc0e9acadf4f7379

firmware/target/arm/imx233/power-imx233.c

@@ -25,6 +25,7 @@
 #include "string.h"
 #include "usb.h"
 #include "system-target.h"
+#include "power-imx233.h"
 
 struct current_step_bit_t
 {
@@ -99,6 +100,10 @@ void power_init(void)
     __FIELD_SET(HW_POWER_VDDDCTRL, LINREG_OFFSET, 2);
     __FIELD_SET(HW_POWER_VDDACTRL, LINREG_OFFSET, 2);
     __FIELD_SET(HW_POWER_VDDIOCTRL, LINREG_OFFSET, 2);
+    /* enable a few bits controlling the DC-DC as recommended by Freescale */
+    __REG_SET(HW_POWER_LOOPCTRL) = HW_POWER_LOOPCTRL__TOGGLE_DIF |
+        HW_POWER_LOOPCTRL__EN_CM_HYST;
+    __FIELD_SET(HW_POWER_LOOPCTRL, EN_RCSCALE, HW_POWER_LOOPCTRL__EN_RCSCALE__2X);
 }
 
 void power_off(void)

firmware/target/arm/imx233/power-imx233.h

@@ -52,6 +52,8 @@
 #define HW_POWER_5VCTRL__PWD_CHARGE_4P2     (1 << 20)
 
 #define HW_POWER_MINPWR         (*(volatile uint32_t *)(HW_POWER_BASE + 0x20))
+#define HW_POWER_MINPWR__HALF_FETS  (1 << 5)
+#define HW_POWER_MINPWR__DOUBLE_FETS    (1 << 6)
 
 #define HW_POWER_CHARGE         (*(volatile uint32_t *)(HW_POWER_BASE + 0x30))
 #define HW_POWER_CHARGE__BATTCHRG_I_BP  0
@@ -129,6 +131,27 @@
 #define HW_POWER_MISC__FREQSEL__21p6MHz     6
 #define HW_POWER_MISC__FREQSEL__17p28MHz    7
 
+#define HW_POWER_LOOPCTRL       (*(volatile uint32_t *)(HW_POWER_BASE + 0xb0))
+#define HW_POWER_LOOPCTRL__DC_C_BP  0
+#define HW_POWER_LOOPCTRL__DC_C_BM  0x3
+#define HW_POWER_LOOPCTRL__DC_R_BP  4
+#define HW_POWER_LOOPCTRL__DC_R_BM  0xf0
+#define HW_POWER_LOOPCTRL__DC_FF_BP 8
+#define HW_POWER_LOOPCTRL__DC_FF_BM (0x7 << 8)
+#define HW_POWER_LOOPCTRL__EN_RCSCALE_BP    12
+#define HW_POWER_LOOPCTRL__EN_RCSCALE_BM    (0x3 << 12)
+#define HW_POWER_LOOPCTRL__EN_RCSCALE__DISABLED 0
+#define HW_POWER_LOOPCTRL__EN_RCSCALE__2X       1
+#define HW_POWER_LOOPCTRL__EN_RCSCALE__4X       2
+#define HW_POWER_LOOPCTRL__EN_RCSCALE__8X       3
+#define HW_POWER_LOOPCTRL__RCSCALE_THRESH   (1 << 14)
+#define HW_POWER_LOOPCTRL__DF_HYST_THRESH   (1 << 15)
+#define HW_POWER_LOOPCTRL__CM_HYST_THRESH   (1 << 16)
+#define HW_POWER_LOOPCTRL__EN_DF_HYST       (1 << 17)
+#define HW_POWER_LOOPCTRL__EN_CM_HYST       (1 << 18)
+#define HW_POWER_LOOPCTRL__HYST_SIGN        (1 << 19)
+#define HW_POWER_LOOPCTRL__TOGGLE_DIF       (1 << 20)
+
 #define HW_POWER_STS            (*(volatile uint32_t *)(HW_POWER_BASE + 0xc0))
 #define HW_POWER_STS__VBUSVALID     (1 << 1)
 #define HW_POWER_STS__CHRGSTS       (1 << 11)
@@ -148,6 +171,17 @@ void imx233_power_set_charge_current(unsigned current); /* in mA */
 void imx233_power_set_stop_current(unsigned current); /* in mA */
 void imx233_power_enable_batadj(bool enable);
 
+static inline void imx233_power_set_dcdc_freq(bool pll, unsigned freq)
+{
+    HW_POWER_MISC &= ~(HW_POWER_MISC__SEL_PLLCLK | HW_POWER_MISC__FREQSEL_BM);
+    /* WARNING: HW_POWER_MISC does have a SET/CLR variant ! */
+    if(pll)
+    {
+        HW_POWER_MISC |= freq << HW_POWER_MISC__FREQSEL_BP;
+        HW_POWER_MISC |= HW_POWER_MISC__SEL_PLLCLK;
+    }
+}
+
 struct imx233_power_info_t
 {
     int vddd; /* in mV */

firmware/target/arm/imx233/sansa-fuzeplus/audio-fuzeplus.c

@@ -25,13 +25,31 @@
 #include "audioout-imx233.h"
 #include "audioin-imx233.h"
 
+static int input_source = AUDIO_SRC_PLAYBACK;
+static unsigned input_flags = 0;
+static int output_source = AUDIO_SRC_PLAYBACK;
+
+static void select_audio_path(void)
+{
+    if(input_source == AUDIO_SRC_PLAYBACK)
+        imx233_audiout_select_hp_input(false);
+    else
+        imx233_audiout_select_hp_input(true);
+}
+
 void audio_input_mux(int source, unsigned flags)
 {
     (void) source;
     (void) flags;
+    input_source = source;
+    input_flags = flags;
+    select_audio_path();
 }
   
 void audio_set_output_source(int source)
 {
     (void) source;
+    output_source = source;
+    select_audio_path();
 }
+

firmware/target/arm/imx233/sansa-fuzeplus/button-fuzeplus.c

@@ -27,6 +27,7 @@
 #include "lcd.h"
 #include "string.h"
 #include "usb.h"
+#include "power-imx233.h"
 
 #ifndef BOOTLOADER
 

firmware/target/arm/imx233/sansa-fuzeplus/power-fuzeplus.c

@@ -24,6 +24,7 @@
 #include "tuner.h"
 #include "fmradio_i2c.h"
 #include "pinctrl-imx233.h"
+#include "power-imx233.h"
 
 static bool tuner_enable = false;
 
@@ -37,6 +38,7 @@ bool tuner_power(bool enable)
         imx233_enable_gpio_output(0, 29, enable);
         imx233_set_gpio_output(0, 29, enable);
         tuner_enable = enable;
+        //imx233_power_set_dcdc_freq(enable, HW_POWER_MISC__FREQSEL__24MHz);
     }
     return tuner_enable;
 }

firmware/target/arm/imx233/system-target.h

@@ -24,10 +24,8 @@
 #include "system-arm.h"
 #include "mmu-arm.h"
 #include "panic.h"
-
-#include "clock-target.h" /* CPUFREQ_* are defined here */
 #include "clkctrl-imx233.h"
-#include "power-imx233.h"
+#include "clock-target.h" /* CPUFREQ_* are defined here */
 
 /* Digital control */
 #define HW_DIGCTL_BASE          0x8001C000

firmware/target/arm/imx233/usb-imx233.c

@@ -28,7 +28,7 @@
 #include "system.h"
 #include "system-target.h"
 #include "clkctrl-imx233.h"
-
+#include "power-imx233.h"
 
 void usb_insert_int(void)
 {