From 9a1e8eb1f0b76b5e72a2343ad881c81b08dd6410 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Fri, 8 Feb 2008 04:21:21 -0800 Subject: Basic PWM driver for AVR32 and AT91 PWM device setup, and a simple PWM driver exposing a programming interface giving access to each channel's full capabilities. Note that this doesn't support starting several channels in synch. [hskinnemoen@atmel.com: allocate platform device dynamically] [hskinnemoen@atmel.com: Kconfig fix] Signed-off-by: David Brownell Signed-off-by: Haavard Skinnemoen Cc: Andrew Victor Cc: Nicolas Ferre Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/avr32/mach-at32ap/at32ap700x.c | 54 +++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'arch/avr32/mach-at32ap/at32ap700x.c') diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index 14e61f05e1f..7678fee9a88 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1185,6 +1185,59 @@ err_dup_modedb: } #endif +/* -------------------------------------------------------------------- + * PWM + * -------------------------------------------------------------------- */ +static struct resource atmel_pwm0_resource[] __initdata = { + PBMEM(0xfff01400), + IRQ(24), +}; +static struct clk atmel_pwm0_mck = { + .name = "mck", + .parent = &pbb_clk, + .mode = pbb_clk_mode, + .get_rate = pbb_clk_get_rate, + .index = 5, +}; + +struct platform_device *__init at32_add_device_pwm(u32 mask) +{ + struct platform_device *pdev; + + if (!mask) + return NULL; + + pdev = platform_device_alloc("atmel_pwm", 0); + if (!pdev) + return NULL; + + if (platform_device_add_resources(pdev, atmel_pwm0_resource, + ARRAY_SIZE(atmel_pwm0_resource))) + goto out_free_pdev; + + if (platform_device_add_data(pdev, &mask, sizeof(mask))) + goto out_free_pdev; + + if (mask & (1 << 0)) + select_peripheral(PA(28), PERIPH_A, 0); + if (mask & (1 << 1)) + select_peripheral(PA(29), PERIPH_A, 0); + if (mask & (1 << 2)) + select_peripheral(PA(21), PERIPH_B, 0); + if (mask & (1 << 3)) + select_peripheral(PA(22), PERIPH_B, 0); + + atmel_pwm0_mck.dev = &pdev->dev; + + platform_device_add(pdev); + + return pdev; + +out_free_pdev: + platform_device_put(pdev); + return NULL; +} + /* -------------------------------------------------------------------- * SSC * -------------------------------------------------------------------- */ @@ -1646,6 +1699,7 @@ struct clk *at32_clock_list[] = { &atmel_usart1_usart, &atmel_usart2_usart, &atmel_usart3_usart, + &atmel_pwm0_mck, #if defined(CONFIG_CPU_AT32AP7000) &macb0_hclk, &macb0_pclk, -- cgit v1.2.3