1 files changed, 0 insertions, 94 deletions
diff --git a/src/lpc176x/gpio.c b/src/lpc176x/gpio.c
index 5f5f9375..e48feb01 100644
--- a/src/lpc176x/gpio.c
+++ b/src/lpc176x/gpio.c
@@ -6,9 +6,7 @@
 
 #include <string.h> // ffs
 #include "LPC17xx.h" // LPC_PINCON
-#include "autoconf.h" // CONFIG_CLOCK_FREQ
 #include "board/irq.h" // irq_save
-#include "board/misc.h" // timer_from_us
 #include "command.h" // shutdown
 #include "gpio.h" // gpio_out_setup
 #include "internal.h" // gpio_peripheral
@@ -19,10 +17,6 @@
  * Pin mappings
  ****************************************************************/
 
-#define GPIO(PORT, NUM) ((PORT) * 32 + (NUM))
-#define GPIO2PORT(PIN) ((PIN) / 32)
-#define GPIO2BIT(PIN) (1<<((PIN) % 32))
-
 static LPC_GPIO_TypeDef * const digital_regs[] = {
     LPC_GPIO0, LPC_GPIO1, LPC_GPIO2, LPC_GPIO3, LPC_GPIO4
 };
@@ -160,91 +154,3 @@ gpio_in_read(struct gpio_in g)
     LPC_GPIO_TypeDef *regs = g.regs;
     return !!(regs->FIOPIN & g.bit);
 }
-
-
-/****************************************************************
- * Analog to Digital Converter (ADC) pins
- ****************************************************************/
-
-static const uint8_t adc_pins[] = {
-    GPIO(0, 23), GPIO(0, 24), GPIO(0, 25), GPIO(0, 26),
-    GPIO(1, 30), GPIO(1, 31), GPIO(0, 3), GPIO(0, 2),
-};
-
-static const uint8_t adc_pin_funcs[] = {
-    1, 1, 1, 1, 3, 3, 2, 2
-};
-
-#define ADC_FREQ_MAX 13000000
-DECL_CONSTANT(ADC_MAX, 4095);
-
-struct gpio_adc
-gpio_adc_setup(uint8_t pin)
-{
-    // Find pin in adc_pins table
-    int chan;
-    for (chan=0; ; chan++) {
-        if (chan >= ARRAY_SIZE(adc_pins))
-            shutdown("Not a valid ADC pin");
-        if (adc_pins[chan] == pin)
-            break;
-    }
-
-    uint32_t prescal = DIV_ROUND_UP(CONFIG_CLOCK_FREQ*4, ADC_FREQ_MAX) - 1;
-    uint32_t adcr = (1<<21) | ((prescal & 0xff) << 8);
-    if (!(LPC_SC->PCONP & (1<<PCLK_ADC))) {
-        // Power up ADC
-        enable_peripheral_clock(PCLK_ADC);
-        LPC_ADC->ADCR = adcr;
-    }
-
-    gpio_peripheral(GPIO2PORT(pin), pin % 32, adc_pin_funcs[chan], 0);
-
-    return (struct gpio_adc){ .cmd = adcr | (1 << chan) | (1 << 24) };
-}
-
-static uint32_t adc_status;
-
-// Try to sample a value. Returns zero if sample ready, otherwise
-// returns the number of clock ticks the caller should wait before
-// retrying this function.
-uint32_t
-gpio_adc_sample(struct gpio_adc g)
-{
-    uint32_t status = adc_status;
-    if (status == g.cmd) {
-        // Sample already underway - check if it is ready
-        uint32_t val = LPC_ADC->ADGDR;
-        if (val & (1<<31))
-            // Sample ready
-            return 0;
-        goto need_delay;
-    }
-    if (status)
-        // ADC busy on some other channel
-        goto need_delay;
-
-    // Start new sample
-    adc_status = g.cmd;
-    LPC_ADC->ADCR = g.cmd;
-
-need_delay:
-    return (65 * DIV_ROUND_UP(CONFIG_CLOCK_FREQ*4, ADC_FREQ_MAX)
-            + timer_from_us(10));
-}
-
-// Read a value; use only after gpio_adc_sample() returns zero
-uint16_t
-gpio_adc_read(struct gpio_adc g)
-{
-    adc_status = 0;
-    return (LPC_ADC->ADGDR >> 4) & 0x0fff;
-}
-
-// Cancel a sample that may have been started with gpio_adc_sample()
-void
-gpio_adc_cancel_sample(struct gpio_adc g)
-{
-    if (adc_status == g.cmd)
-        adc_status = 0;
-}