code: plan9front

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imx8/sai, aux/wm8960: expose jack detect status in #A/audiostat

--- a/sys/src/9/imx8/sai.c

+++ b/sys/src/9/imx8/sai.c

@@ -67,6 +67,7 @@

 struct Ctlr {

 	u32int *reg;

 	Audio *adev;

+	int hp;

 	Ring w;

 	int wactive;

@@ -354,6 +355,7 @@

 		(v & TCSR_FWF) ? " fifo_warn" : "",

 		(v & TCSR_FRF) ? " fifo_req" : ""

 	);

+	s = seprint(s, e, "hp %d\n", ctlr->hp);

 	return s - (char*)a;

 }

@@ -366,6 +368,14 @@

 	return buffered(&ctlr->w);

 }

+static void

+jacksense(uint pin, void *a)

+{

+	Ctlr *ctlr = a;

+

+	ctlr->hp = gpioin(pin);

+}

+

 static int

 saiprobe(Audio *adev)

 {

@@ -390,10 +400,11 @@

 	adev->status = saistatus;

 	adev->ctl = saictl;

+	intrenable(IRQsai2, saiinterrupt, ctlr, BUSUNKNOWN, "sai2");

+	ctlr->hp = gpioin(GPIO_PIN(4, 21));

+	gpiointrenable(GPIO_PIN(4, 21), GpioEdge, jacksense, ctlr);

 	saireset(ctlr);

-	intrenable(IRQsai2, saiinterrupt, ctlr, BUSUNKNOWN, "sai2");

-

 	return 0;

 }

@@ -400,15 +411,14 @@

 void

 sailink(void)

 {

-	iomuxpad("pad_sai2_rxfs", "sai2_rx_sync", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_rxc", "sai2_rx_bclk", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_rxd0", "sai2_rx_data0", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_txfs", "sai2_tx_sync", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_txc", "sai2_tx_bclk", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_txd0", "sai2_tx_data0", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

-	iomuxpad("pad_sai2_mclk", "sai2_mclk", "SION ~LVTTL HYS PUE ~ODE FAST 45_OHM VSEL_0");

+	iomuxpad("pad_sai2_rxfs", "gpio4_io21", "SION ~LVTTL HYS ~PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_rxc", "sai2_rx_bclk", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_rxd0", "sai2_rx_data0", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_txfs", "sai2_tx_sync", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_txc", "sai2_tx_bclk", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_txd0", "sai2_tx_data0", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

+	iomuxpad("pad_sai2_mclk", "sai2_mclk", "~LVTTL HYS PUE ~ODE FAST 45_OHM");

-	setclkgate("sai2.ipg_clk", 0);

 	setclkrate("sai2.ipg_clk", "audio_pll1_clk", 25*Mhz);

 	setclkgate("sai2.ipg_clk", 1);

--- a/sys/src/cmd/aux/wm8960.c

+++ b/sys/src/cmd/aux/wm8960.c

@@ -192,10 +192,7 @@

 	wr(0x1c, 1<<3); /* done with anti-pop */

 	wr(0x19, 1<<7 | 1<<6); /* Vref on */

-	/*

-	 * Debounced jack detect output on gpio - no that it is used, but it

-	 * could be soldered to SoC's input and actually become useful.

-	 */

+	wr(0x09, 1<<6); /* adclrc → gpio (for jack detect output) */

 	wr(0x30, 3<<4 | 2<<2 | 1<<1); /* JD2 jack detect in; Tsense on */

 	wr(0x1b, 1<<3); /* HP_[LR] responsive to jack detect */

 	wr(0x18, 1<<6); /* HP switch on; high = HP */