summaryrefslogtreecommitdiff
path: root/arch/arm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/at91sam9g45.dtsi37
-rw-r--r--arch/arm/boot/dts/at91sam9x5.dtsi38
-rw-r--r--arch/arm/mach-at91/at91sam9260.c8
-rw-r--r--arch/arm/mach-at91/at91sam9260_devices.c90
-rw-r--r--arch/arm/mach-at91/at91sam9g45.c9
-rw-r--r--arch/arm/mach-at91/at91sam9g45_devices.c101
-rw-r--r--arch/arm/mach-at91/at91sam9x5.c6
-rw-r--r--arch/arm/mach-at91/board-sam9g20ek.c14
-rw-r--r--arch/arm/mach-at91/board-sam9m10g45ek.c12
9 files changed, 315 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index c8042147eaa..7dbccaf199f 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -199,6 +199,43 @@
interrupts = <25 4>;
status = "disabled";
};
+
+ adc0: adc@fffb0000 {
+ compatible = "atmel,at91sam9260-adc";
+ reg = <0xfffb0000 0x100>;
+ interrupts = <20 4>;
+ atmel,adc-use-external-triggers;
+ atmel,adc-channels-used = <0xff>;
+ atmel,adc-vref = <3300>;
+ atmel,adc-num-channels = <8>;
+ atmel,adc-startup-time = <40>;
+ atmel,adc-channel-base = <0x30>;
+ atmel,adc-drdy-mask = <0x10000>;
+ atmel,adc-status-register = <0x1c>;
+ atmel,adc-trigger-register = <0x08>;
+
+ trigger@0 {
+ trigger-name = "external-rising";
+ trigger-value = <0x1>;
+ trigger-external;
+ };
+ trigger@1 {
+ trigger-name = "external-falling";
+ trigger-value = <0x2>;
+ trigger-external;
+ };
+
+ trigger@2 {
+ trigger-name = "external-any";
+ trigger-value = <0x3>;
+ trigger-external;
+ };
+
+ trigger@3 {
+ trigger-name = "continuous";
+ trigger-value = <0x6>;
+ };
+ };
};
nand0: nand@40000000 {
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index dd4ed748469..6b3ef4339ae 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -190,6 +190,44 @@
interrupts = <27 4>;
status = "disabled";
};
+
+ adc0: adc@f804c000 {
+ compatible = "atmel,at91sam9260-adc";
+ reg = <0xf804c000 0x100>;
+ interrupts = <19 4>;
+ atmel,adc-use-external;
+ atmel,adc-channels-used = <0xffff>;
+ atmel,adc-vref = <3300>;
+ atmel,adc-num-channels = <12>;
+ atmel,adc-startup-time = <40>;
+ atmel,adc-channel-base = <0x50>;
+ atmel,adc-drdy-mask = <0x1000000>;
+ atmel,adc-status-register = <0x30>;
+ atmel,adc-trigger-register = <0xc0>;
+
+ trigger@0 {
+ trigger-name = "external-rising";
+ trigger-value = <0x1>;
+ trigger-external;
+ };
+
+ trigger@1 {
+ trigger-name = "external-falling";
+ trigger-value = <0x2>;
+ trigger-external;
+ };
+
+ trigger@2 {
+ trigger-name = "external-any";
+ trigger-value = <0x3>;
+ trigger-external;
+ };
+
+ trigger@3 {
+ trigger-name = "continuous";
+ trigger-value = <0x6>;
+ };
+ };
};
nand0: nand@40000000 {
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index a27bbec50ca..2b1e438ed87 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -55,6 +55,13 @@ static struct clk adc_clk = {
.pmc_mask = 1 << AT91SAM9260_ID_ADC,
.type = CLK_TYPE_PERIPHERAL,
};
+
+static struct clk adc_op_clk = {
+ .name = "adc_op_clk",
+ .type = CLK_TYPE_PERIPHERAL,
+ .rate_hz = 5000000,
+};
+
static struct clk usart0_clk = {
.name = "usart0_clk",
.pmc_mask = 1 << AT91SAM9260_ID_US0,
@@ -166,6 +173,7 @@ static struct clk *periph_clocks[] __initdata = {
&pioB_clk,
&pioC_clk,
&adc_clk,
+ &adc_op_clk,
&usart0_clk,
&usart1_clk,
&usart2_clk,
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index d556de14111..0ded951f785 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -17,12 +17,15 @@
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>
+#include <linux/platform_data/at91_adc.h>
+
#include <mach/board.h>
#include <mach/cpu.h>
#include <mach/at91sam9260.h>
#include <mach/at91sam9260_matrix.h>
#include <mach/at91_matrix.h>
#include <mach/at91sam9_smc.h>
+#include <mach/at91_adc.h>
#include "generic.h"
@@ -1340,6 +1343,93 @@ void __init at91_add_device_cf(struct at91_cf_data *data)
void __init at91_add_device_cf(struct at91_cf_data * data) {}
#endif
+/* --------------------------------------------------------------------
+ * ADCs
+ * -------------------------------------------------------------------- */
+
+#if IS_ENABLED(CONFIG_AT91_ADC)
+static struct at91_adc_data adc_data;
+
+static struct resource adc_resources[] = {
+ [0] = {
+ .start = AT91SAM9260_BASE_ADC,
+ .end = AT91SAM9260_BASE_ADC + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91SAM9260_ID_ADC,
+ .end = AT91SAM9260_ID_ADC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91_adc_device = {
+ .name = "at91_adc",
+ .id = -1,
+ .dev = {
+ .platform_data = &adc_data,
+ },
+ .resource = adc_resources,
+ .num_resources = ARRAY_SIZE(adc_resources),
+};
+
+static struct at91_adc_trigger at91_adc_triggers[] = {
+ [0] = {
+ .name = "timer-counter-0",
+ .value = AT91_ADC_TRGSEL_TC0 | AT91_ADC_TRGEN,
+ },
+ [1] = {
+ .name = "timer-counter-1",
+ .value = AT91_ADC_TRGSEL_TC1 | AT91_ADC_TRGEN,
+ },
+ [2] = {
+ .name = "timer-counter-2",
+ .value = AT91_ADC_TRGSEL_TC2 | AT91_ADC_TRGEN,
+ },
+ [3] = {
+ .name = "external",
+ .value = AT91_ADC_TRGSEL_EXTERNAL | AT91_ADC_TRGEN,
+ .is_external = true,
+ },
+};
+
+static struct at91_adc_reg_desc at91_adc_register_g20 = {
+ .channel_base = AT91_ADC_CHR(0),
+ .drdy_mask = AT91_ADC_DRDY,
+ .status_register = AT91_ADC_SR,
+ .trigger_register = AT91_ADC_MR,
+};
+
+void __init at91_add_device_adc(struct at91_adc_data *data)
+{
+ if (!data)
+ return;
+
+ if (test_bit(0, &data->channels_used))
+ at91_set_A_periph(AT91_PIN_PC0, 0);
+ if (test_bit(1, &data->channels_used))
+ at91_set_A_periph(AT91_PIN_PC1, 0);
+ if (test_bit(2, &data->channels_used))
+ at91_set_A_periph(AT91_PIN_PC2, 0);
+ if (test_bit(3, &data->channels_used))
+ at91_set_A_periph(AT91_PIN_PC3, 0);
+
+ if (data->use_external_triggers)
+ at91_set_A_periph(AT91_PIN_PA22, 0);
+
+ data->num_channels = 4;
+ data->startup_time = 10;
+ data->registers = &at91_adc_register_g20;
+ data->trigger_number = 4;
+ data->trigger_list = at91_adc_triggers;
+
+ adc_data = *data;
+ platform_device_register(&at91_adc_device);
+}
+#else
+void __init at91_add_device_adc(struct at91_adc_data *data) {}
+#endif
+
/* -------------------------------------------------------------------- */
/*
* These devices are always present and don't need any board-specific
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index f2054495a65..4792682d52b 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -176,6 +176,12 @@ static struct clk vdec_clk = {
.type = CLK_TYPE_PERIPHERAL,
};
+static struct clk adc_op_clk = {
+ .name = "adc_op_clk",
+ .type = CLK_TYPE_PERIPHERAL,
+ .rate_hz = 13200000,
+};
+
static struct clk *periph_clocks[] __initdata = {
&pioA_clk,
&pioB_clk,
@@ -204,6 +210,7 @@ static struct clk *periph_clocks[] __initdata = {
&isi_clk,
&udphs_clk,
&mmc1_clk,
+ &adc_op_clk,
// irq0
};
@@ -242,6 +249,8 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_ID("pioC", &pioC_clk),
CLKDEV_CON_ID("pioD", &pioDE_clk),
CLKDEV_CON_ID("pioE", &pioDE_clk),
+ /* Fake adc clock */
+ CLKDEV_CON_ID("adc_clk", &tsc_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 35bd42d0219..f6747246d64 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -19,9 +19,12 @@
#include <linux/i2c-gpio.h>
#include <linux/atmel-mci.h>
+#include <linux/platform_data/at91_adc.h>
+
#include <linux/fb.h>
#include <video/atmel_lcdc.h>
+#include <mach/at91_adc.h>
#include <mach/board.h>
#include <mach/at91sam9g45.h>
#include <mach/at91sam9g45_matrix.h>
@@ -1182,6 +1185,104 @@ void __init at91_add_device_tsadcc(struct at91_tsadcc_data *data) {}
/* --------------------------------------------------------------------
+ * ADC
+ * -------------------------------------------------------------------- */
+
+#if IS_ENABLED(CONFIG_AT91_ADC)
+static struct at91_adc_data adc_data;
+
+static struct resource adc_resources[] = {
+ [0] = {
+ .start = AT91SAM9G45_BASE_TSC,
+ .end = AT91SAM9G45_BASE_TSC + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91SAM9G45_ID_TSC,
+ .end = AT91SAM9G45_ID_TSC,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_device at91_adc_device = {
+ .name = "at91_adc",
+ .id = -1,
+ .dev = {
+ .platform_data = &adc_data,
+ },
+ .resource = adc_resources,
+ .num_resources = ARRAY_SIZE(adc_resources),
+};
+
+static struct at91_adc_trigger at91_adc_triggers[] = {
+ [0] = {
+ .name = "external-rising",
+ .value = 1,
+ .is_external = true,
+ },
+ [1] = {
+ .name = "external-falling",
+ .value = 2,
+ .is_external = true,
+ },
+ [2] = {
+ .name = "external-any",
+ .value = 3,
+ .is_external = true,
+ },
+ [3] = {
+ .name = "continuous",
+ .value = 6,
+ .is_external = false,
+ },
+};
+
+static struct at91_adc_reg_desc at91_adc_register_g45 = {
+ .channel_base = AT91_ADC_CHR(0),
+ .drdy_mask = AT91_ADC_DRDY,
+ .status_register = AT91_ADC_SR,
+ .trigger_register = 0x08,
+};
+
+void __init at91_add_device_adc(struct at91_adc_data *data)
+{
+ if (!data)
+ return;
+
+ if (test_bit(0, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD20, 0);
+ if (test_bit(1, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD21, 0);
+ if (test_bit(2, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD22, 0);
+ if (test_bit(3, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD23, 0);
+ if (test_bit(4, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD24, 0);
+ if (test_bit(5, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD25, 0);
+ if (test_bit(6, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD26, 0);
+ if (test_bit(7, &data->channels_used))
+ at91_set_gpio_input(AT91_PIN_PD27, 0);
+
+ if (data->use_external_triggers)
+ at91_set_A_periph(AT91_PIN_PD28, 0);
+
+ data->num_channels = 8;
+ data->startup_time = 40;
+ data->registers = &at91_adc_register_g45;
+ data->trigger_number = 4;
+ data->trigger_list = at91_adc_triggers;
+
+ adc_data = *data;
+ platform_device_register(&at91_adc_device);
+}
+#else
+void __init at91_add_device_adc(struct at91_adc_data *data) {}
+#endif
+
+/* --------------------------------------------------------------------
* RTT
* -------------------------------------------------------------------- */
diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c
index 13c8cae6046..1b144b4d3ce 100644
--- a/arch/arm/mach-at91/at91sam9x5.c
+++ b/arch/arm/mach-at91/at91sam9x5.c
@@ -120,6 +120,11 @@ static struct clk adc_clk = {
.pmc_mask = 1 << AT91SAM9X5_ID_ADC,
.type = CLK_TYPE_PERIPHERAL,
};
+static struct clk adc_op_clk = {
+ .name = "adc_op_clk",
+ .type = CLK_TYPE_PERIPHERAL,
+ .rate_hz = 5000000,
+};
static struct clk dma0_clk = {
.name = "dma0_clk",
.pmc_mask = 1 << AT91SAM9X5_ID_DMA0,
@@ -205,6 +210,7 @@ static struct clk *periph_clocks[] __initdata = {
&tcb0_clk,
&pwm_clk,
&adc_clk,
+ &adc_op_clk,
&dma0_clk,
&dma1_clk,
&uhphs_clk,
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index 3d615532ae5..6860d345110 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -32,6 +32,8 @@
#include <linux/regulator/fixed.h>
#include <linux/regulator/consumer.h>
+#include <linux/platform_data/at91_adc.h>
+
#include <mach/hardware.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
@@ -304,6 +306,16 @@ static void __init ek_add_device_buttons(void)
static void __init ek_add_device_buttons(void) {}
#endif
+/*
+ * ADCs
+ */
+
+static struct at91_adc_data ek_adc_data = {
+ .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3),
+ .use_external_triggers = true,
+ .vref = 3300,
+};
+
#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
REGULATOR_SUPPLY("AVDD", "0-001b"),
@@ -389,6 +401,8 @@ static void __init ek_board_init(void)
ek_add_device_gpio_leds();
/* Push Buttons */
ek_add_device_buttons();
+ /* ADCs */
+ at91_add_device_adc(&ek_adc_data);
/* PCK0 provides MCLK to the WM8731 */
at91_set_B_periph(AT91_PIN_PC1, 0);
/* SSC (for WM8731) */
diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index 9a87f0b072f..63163dc7df4 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -27,6 +27,8 @@
#include <linux/atmel-mci.h>
#include <linux/delay.h>
+#include <linux/platform_data/at91_adc.h>
+
#include <mach/hardware.h>
#include <video/atmel_lcdc.h>
#include <media/soc_camera.h>
@@ -305,6 +307,14 @@ static struct at91_tsadcc_data ek_tsadcc_data = {
.ts_sample_hold_time = 0x0a,
};
+/*
+ * ADCs
+ */
+static struct at91_adc_data ek_adc_data = {
+ .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7),
+ .use_external_triggers = true,
+ .vref = 3300,
+};
/*
* GPIO Buttons
@@ -476,6 +486,8 @@ static void __init ek_board_init(void)
at91_add_device_lcdc(&ek_lcdc_data);
/* Touch Screen */
at91_add_device_tsadcc(&ek_tsadcc_data);
+ /* ADC */
+ at91_add_device_adc(&ek_adc_data);
/* Push Buttons */
ek_add_device_buttons();
/* AC97 */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 04:01:39 +0000