[RFC PATCH 13/23] at91: Make PWM device common
Ryan Mallon
ryan at bluewatersys.com
Tue Apr 19 21:10:17 EDT 2011
Replace the individual PWM code for each at91 variant with a single
implementation in devices.c
Signed-off-by: Ryan Mallon <ryan at bluewatersys.com>
---
arch/arm/mach-at91/at91cap9_devices.c | 56 +++++-------------------------
arch/arm/mach-at91/at91sam9263_devices.c | 55 +++++------------------------
arch/arm/mach-at91/at91sam9g45_devices.c | 55 +++++------------------------
arch/arm/mach-at91/at91sam9rl_devices.c | 55 +++++------------------------
arch/arm/mach-at91/devices.c | 55 +++++++++++++++++++++++++++++
arch/arm/mach-at91/devices.h | 7 ++++
6 files changed, 98 insertions(+), 185 deletions(-)
diff --git a/arch/arm/mach-at91/at91cap9_devices.c b/arch/arm/mach-at91/at91cap9_devices.c
index 9aa7b40..d127f5b 100644
--- a/arch/arm/mach-at91/at91cap9_devices.c
+++ b/arch/arm/mach-at91/at91cap9_devices.c
@@ -302,56 +302,17 @@ static struct __initdata at91_dev_table_rtt device_rtt = {
* PWM
* --------------------------------------------------------------------*/
-#if defined(CONFIG_ATMEL_PWM)
-static u32 pwm_mask;
-
-static struct resource pwm_resources[] = {
- [0] = {
- .start = AT91CAP9_BASE_PWMC,
- .end = AT91CAP9_BASE_PWMC + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = AT91CAP9_ID_PWMC,
- .end = AT91CAP9_ID_PWMC,
- .flags = IORESOURCE_IRQ,
+static struct __initdata at91_dev_table_pwm device_pwm = {
+ .mmio_base = AT91CAP9_BASE_PWMC,
+ .irq = AT91CAP9_ID_PWMC,
+ .pwm_pins = {
+ {AT91_PIN_PB19, AT91_PIN_PERIPH_A, 1, 0, 0},
+ {AT91_PIN_PB8, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PC29, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PA11, AT91_PIN_PERIPH_B, 1, 0, 0},
},
};
-static struct platform_device at91cap9_pwm0_device = {
- .name = "atmel_pwm",
- .id = -1,
- .dev = {
- .platform_data = &pwm_mask,
- },
- .resource = pwm_resources,
- .num_resources = ARRAY_SIZE(pwm_resources),
-};
-
-void __init at91_add_device_pwm(u32 mask)
-{
- if (mask & (1 << AT91_PWM0))
- at91_set_A_periph(AT91_PIN_PB19, 1); /* enable PWM0 */
-
- if (mask & (1 << AT91_PWM1))
- at91_set_B_periph(AT91_PIN_PB8, 1); /* enable PWM1 */
-
- if (mask & (1 << AT91_PWM2))
- at91_set_B_periph(AT91_PIN_PC29, 1); /* enable PWM2 */
-
- if (mask & (1 << AT91_PWM3))
- at91_set_B_periph(AT91_PIN_PA11, 1); /* enable PWM3 */
-
- pwm_mask = mask;
-
- platform_device_register(&at91cap9_pwm0_device);
-}
-#else
-void __init at91_add_device_pwm(u32 mask) {}
-#endif
-
-
-
/* --------------------------------------------------------------------
* AC97
* -------------------------------------------------------------------- */
@@ -679,6 +640,7 @@ static struct at91_device_table __initdata at91cap9_device_table = {
.uart[0] = &device_uart0,
.uart[1] = &device_uart1,
.uart[2] = &device_uart2,
+ .pwm = &device_pwm,
};
void __init at91cap9_init_devices(void)
diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index e5f0164..1ffd044 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -536,55 +536,17 @@ static struct __initdata at91_dev_table_rtt device_rtt1 = {
* PWM
* --------------------------------------------------------------------*/
-#if defined(CONFIG_ATMEL_PWM)
-static u32 pwm_mask;
-
-static struct resource pwm_resources[] = {
- [0] = {
- .start = AT91SAM9263_BASE_PWMC,
- .end = AT91SAM9263_BASE_PWMC + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = AT91SAM9263_ID_PWMC,
- .end = AT91SAM9263_ID_PWMC,
- .flags = IORESOURCE_IRQ,
+static struct __initdata at91_dev_table_pwm device_pwm = {
+ .mmio_base = AT91SAM9263_BASE_PWMC,
+ .irq = AT91SAM9263_ID_PWMC,
+ .pwm_pins = {
+ {AT91_PIN_PB7, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PB8, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PC29, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PB29, AT91_PIN_PERIPH_B, 1, 0, 0},
},
};
-static struct platform_device at91sam9263_pwm0_device = {
- .name = "atmel_pwm",
- .id = -1,
- .dev = {
- .platform_data = &pwm_mask,
- },
- .resource = pwm_resources,
- .num_resources = ARRAY_SIZE(pwm_resources),
-};
-
-void __init at91_add_device_pwm(u32 mask)
-{
- if (mask & (1 << AT91_PWM0))
- at91_set_B_periph(AT91_PIN_PB7, 1); /* enable PWM0 */
-
- if (mask & (1 << AT91_PWM1))
- at91_set_B_periph(AT91_PIN_PB8, 1); /* enable PWM1 */
-
- if (mask & (1 << AT91_PWM2))
- at91_set_B_periph(AT91_PIN_PC29, 1); /* enable PWM2 */
-
- if (mask & (1 << AT91_PWM3))
- at91_set_B_periph(AT91_PIN_PB29, 1); /* enable PWM3 */
-
- pwm_mask = mask;
-
- platform_device_register(&at91sam9263_pwm0_device);
-}
-#else
-void __init at91_add_device_pwm(u32 mask) {}
-#endif
-
-
/* --------------------------------------------------------------------
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */
@@ -787,6 +749,7 @@ static struct at91_device_table __initdata at91sam9263_device_table = {
.uart[0] = &device_uart0,
.uart[1] = &device_uart1,
.uart[2] = &device_uart2,
+ .pwm = &device_pwm,
};
void __init at91sam9263_init_devices(void)
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index c832917..0f11c56 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -569,55 +569,17 @@ static struct __initdata at91_dev_table_rtt device_rtt = {
* PWM
* --------------------------------------------------------------------*/
-#if defined(CONFIG_ATMEL_PWM) || defined(CONFIG_ATMEL_PWM_MODULE)
-static u32 pwm_mask;
-
-static struct resource pwm_resources[] = {
- [0] = {
- .start = AT91SAM9G45_BASE_PWMC,
- .end = AT91SAM9G45_BASE_PWMC + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = AT91SAM9G45_ID_PWMC,
- .end = AT91SAM9G45_ID_PWMC,
- .flags = IORESOURCE_IRQ,
+static struct __initdata at91_dev_table_pwm device_pwm = {
+ .mmio_base = AT91SAM9G45_BASE_PWMC,
+ .irq = AT91SAM9G45_ID_PWMC,
+ .pwm_pins = {
+ {AT91_PIN_PD24, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PD31, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PD26, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PD0, AT91_PIN_PERIPH_B, 1, 0, 0},
},
};
-static struct platform_device at91sam9g45_pwm0_device = {
- .name = "atmel_pwm",
- .id = -1,
- .dev = {
- .platform_data = &pwm_mask,
- },
- .resource = pwm_resources,
- .num_resources = ARRAY_SIZE(pwm_resources),
-};
-
-void __init at91_add_device_pwm(u32 mask)
-{
- if (mask & (1 << AT91_PWM0))
- at91_set_B_periph(AT91_PIN_PD24, 1); /* enable PWM0 */
-
- if (mask & (1 << AT91_PWM1))
- at91_set_B_periph(AT91_PIN_PD31, 1); /* enable PWM1 */
-
- if (mask & (1 << AT91_PWM2))
- at91_set_B_periph(AT91_PIN_PD26, 1); /* enable PWM2 */
-
- if (mask & (1 << AT91_PWM3))
- at91_set_B_periph(AT91_PIN_PD0, 1); /* enable PWM3 */
-
- pwm_mask = mask;
-
- platform_device_register(&at91sam9g45_pwm0_device);
-}
-#else
-void __init at91_add_device_pwm(u32 mask) {}
-#endif
-
-
/* --------------------------------------------------------------------
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */
@@ -836,6 +798,7 @@ static struct at91_device_table __initdata at91sam9g45_device_table = {
.uart[1] = &device_uart1,
.uart[2] = &device_uart2,
.uart[3] = &device_uart3,
+ .pwm = &device_pwm,
};
void __init at91sam9g45_init_devices(void)
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index e7a1fe1..7890d55 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -447,55 +447,17 @@ static struct __initdata at91_dev_table_rtt device_rtt = {
* PWM
* --------------------------------------------------------------------*/
-#if defined(CONFIG_ATMEL_PWM)
-static u32 pwm_mask;
-
-static struct resource pwm_resources[] = {
- [0] = {
- .start = AT91SAM9RL_BASE_PWMC,
- .end = AT91SAM9RL_BASE_PWMC + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = AT91SAM9RL_ID_PWMC,
- .end = AT91SAM9RL_ID_PWMC,
- .flags = IORESOURCE_IRQ,
+static struct __initdata at91_dev_table_pwm device_pwm = {
+ .mmio_base = AT91SAM9RL_BASE_PWMC,
+ .irq = AT91SAM9RL_ID_PWMC,
+ .pwm_pins = {
+ {AT91_PIN_PB8, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PB9, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PD5, AT91_PIN_PERIPH_B, 1, 0, 0},
+ {AT91_PIN_PD8, AT91_PIN_PERIPH_B, 1, 0, 0},
},
};
-static struct platform_device at91sam9rl_pwm0_device = {
- .name = "atmel_pwm",
- .id = -1,
- .dev = {
- .platform_data = &pwm_mask,
- },
- .resource = pwm_resources,
- .num_resources = ARRAY_SIZE(pwm_resources),
-};
-
-void __init at91_add_device_pwm(u32 mask)
-{
- if (mask & (1 << AT91_PWM0))
- at91_set_B_periph(AT91_PIN_PB8, 1); /* enable PWM0 */
-
- if (mask & (1 << AT91_PWM1))
- at91_set_B_periph(AT91_PIN_PB9, 1); /* enable PWM1 */
-
- if (mask & (1 << AT91_PWM2))
- at91_set_B_periph(AT91_PIN_PD5, 1); /* enable PWM2 */
-
- if (mask & (1 << AT91_PWM3))
- at91_set_B_periph(AT91_PIN_PD8, 1); /* enable PWM3 */
-
- pwm_mask = mask;
-
- platform_device_register(&at91sam9rl_pwm0_device);
-}
-#else
-void __init at91_add_device_pwm(u32 mask) {}
-#endif
-
-
/* --------------------------------------------------------------------
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */
@@ -711,6 +673,7 @@ static struct at91_device_table __initdata at91sam9rl_device_table = {
.uart[1] = &device_uart1,
.uart[2] = &device_uart2,
.uart[3] = &device_uart3,
+ .pwm = &device_pwm,
};
void __init at91sam9rl_init_devices(void)
diff --git a/arch/arm/mach-at91/devices.c b/arch/arm/mach-at91/devices.c
index f94b27d..a4c29ed 100644
--- a/arch/arm/mach-at91/devices.c
+++ b/arch/arm/mach-at91/devices.c
@@ -1303,6 +1303,61 @@ void __init at91_set_serial_console(unsigned portnr) {}
void __init at91_add_device_serial(void) {}
#endif
+/* --------------------------------------------------------------------
+ * PWM
+ * --------------------------------------------------------------------*/
+
+#if defined(CONFIG_ATMEL_PWM)
+static u32 pwm_mask;
+
+static struct resource pwm_resources[] = {
+ [0] = {
+ .end = SZ_16K,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91_pwm_device = {
+ .name = "atmel_pwm",
+ .id = -1,
+ .dev = {
+ .platform_data = &pwm_mask,
+ },
+ .resource = pwm_resources,
+ .num_resources = ARRAY_SIZE(pwm_resources),
+};
+
+void __init at91_add_device_pwm(u32 mask)
+{
+ struct at91_dev_table_pwm *info = devices->pwm;
+
+ BUG_ON(!info);
+ init_resource_mem(&pwm_resources[0], info->mmio_base);
+ init_resource_irq(&pwm_resources[1], info->irq);
+
+ if (mask & (1 << AT91_PWM0))
+ at91_config_pins(&info->pwm_pins[0], 1); /* enable PWM0 */
+
+ if (mask & (1 << AT91_PWM1))
+ at91_config_pins(&info->pwm_pins[1], 1); /* enable PWM1 */
+
+ if (mask & (1 << AT91_PWM2))
+ at91_config_pins(&info->pwm_pins[2], 1); /* enable PWM2 */
+
+ if (mask & (1 << AT91_PWM3))
+ at91_config_pins(&info->pwm_pins[3], 1); /* enable PWM3 */
+
+ pwm_mask = mask;
+
+ platform_device_register(&at91_pwm_device);
+}
+#else
+void __init at91_add_device_pwm(u32 mask) {}
+#endif
+
static int __init at91_add_standard_devices(void)
{
at91_add_device_tc();
diff --git a/arch/arm/mach-at91/devices.h b/arch/arm/mach-at91/devices.h
index c535f58..52563be 100644
--- a/arch/arm/mach-at91/devices.h
+++ b/arch/arm/mach-at91/devices.h
@@ -122,6 +122,12 @@ struct at91_dev_table_uart {
struct at91_pin_config dsr_pin;
};
+struct at91_dev_table_pwm {
+ unsigned mmio_base;
+ int irq;
+ struct at91_pin_config pwm_pins[4];
+};
+
struct at91_device_table {
struct at91_dev_table_ethernet *ethernet;
struct at91_dev_table_usb_ohci *usbh_ohci;
@@ -135,6 +141,7 @@ struct at91_device_table {
struct at91_dev_table_rtt *rtt[2];
struct at91_dev_table_uart *dbgu;
struct at91_dev_table_uart *uart[6];
+ struct at91_dev_table_pwm *pwm;
};
extern void __init at91_init_devices(struct at91_device_table *device_table);
--
1.7.0.4
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