[ARM] 5258/1: [AT91] PWM controller initialization

Add platform_devices and configuration of the PWM controller found on
Atmel AT91CAP9, SAM9263 and SAM9RL processors.
SAM9263 support by Sedji Gaouaou.
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-at91/at91cap9.c

@@ -141,8 +141,8 @@ static struct clk tcb_clk = {
 	.pmc_mask	= 1 << AT91CAP9_ID_TCB,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
-static struct clk pwmc_clk = {
-	.name		= "pwmc_clk",
+static struct clk pwm_clk = {
+	.name		= "pwm_clk",
 	.pmc_mask	= 1 << AT91CAP9_ID_PWMC,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
@@ -207,7 +207,7 @@ static struct clk *periph_clocks[] __initdata = {
 	&ssc1_clk,
 	&ac97_clk,
 	&tcb_clk,
-	&pwmc_clk,
+	&pwm_clk,
 	&macb_clk,
 	&aestdes_clk,
 	&adc_clk,

arch/arm/mach-at91/at91cap9_devices.c

@@ -718,6 +718,60 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  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 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
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9263.c

@@ -129,8 +129,8 @@ static struct clk tcb_clk = {
 	.pmc_mask	= 1 << AT91SAM9263_ID_TCB,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
-static struct clk pwmc_clk = {
-	.name		= "pwmc_clk",
+static struct clk pwm_clk = {
+	.name		= "pwm_clk",
 	.pmc_mask	= 1 << AT91SAM9263_ID_PWMC,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
@@ -187,7 +187,7 @@ static struct clk *periph_clocks[] __initdata = {
 	&ssc1_clk,
 	&ac97_clk,
 	&tcb_clk,
-	&pwmc_clk,
+	&pwm_clk,
 	&macb_clk,
 	&twodge_clk,
 	&udc_clk,

arch/arm/mach-at91/at91sam9263_devices.c

@@ -885,6 +885,59 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  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 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
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9rl.c

@@ -131,8 +131,8 @@ static struct clk tc2_clk = {
 	.pmc_mask	= 1 << AT91SAM9RL_ID_TC2,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
-static struct clk pwmc_clk = {
-	.name		= "pwmc_clk",
+static struct clk pwm_clk = {
+	.name		= "pwm_clk",
 	.pmc_mask	= 1 << AT91SAM9RL_ID_PWMC,
 	.type		= CLK_TYPE_PERIPHERAL,
 };
@@ -180,7 +180,7 @@ static struct clk *periph_clocks[] __initdata = {
 	&tc0_clk,
 	&tc1_clk,
 	&tc2_clk,
-	&pwmc_clk,
+	&pwm_clk,
 	&tsc_clk,
 	&dma_clk,
 	&udphs_clk,

arch/arm/mach-at91/at91sam9rl_devices.c

@@ -591,6 +591,59 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  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 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
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/include/mach/board.h

@@ -132,6 +132,16 @@ struct atmel_uart_data {
 };
 extern void __init at91_add_device_serial(void);
 
+/*
+ * PWM
+ */
+#define AT91_PWM0	0
+#define AT91_PWM1	1
+#define AT91_PWM2	2
+#define AT91_PWM3	3
+
+extern void __init at91_add_device_pwm(u32 mask);
+
 /*
  * SSC -- accessed through ssc_request(id).  Drivers don't bind to SSC
  * platform devices.  Their SSC ID is part of their configuration data,