diff options
33 files changed, 186 insertions, 1065 deletions
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c index f30290572293..f6663d6c01ec 100644 --- a/arch/arm/mach-at91/at91sam9263.c +++ b/arch/arm/mach-at91/at91sam9263.c @@ -199,6 +199,7 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk), CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260.0", &twi_clk), + CLKDEV_CON_DEV_ID(NULL, "at91sam9rl-pwm", &pwm_clk), /* fake hclk clock */ CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk), CLKDEV_CON_ID("pioA", &pioA_clk), diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c index 309390d8e2f8..cef0e2f57068 100644 --- a/arch/arm/mach-at91/at91sam9263_devices.c +++ b/arch/arm/mach-at91/at91sam9263_devices.c @@ -1131,9 +1131,7 @@ static void __init at91_add_device_watchdog(void) {} * PWM * --------------------------------------------------------------------*/ -#if defined(CONFIG_ATMEL_PWM) -static u32 pwm_mask; - +#if IS_ENABLED(CONFIG_PWM_ATMEL) static struct resource pwm_resources[] = { [0] = { .start = AT91SAM9263_BASE_PWMC, @@ -1148,11 +1146,8 @@ static struct resource pwm_resources[] = { }; static struct platform_device at91sam9263_pwm0_device = { - .name = "atmel_pwm", + .name = "at91sam9rl-pwm", .id = -1, - .dev = { - .platform_data = &pwm_mask, - }, .resource = pwm_resources, .num_resources = ARRAY_SIZE(pwm_resources), }; @@ -1171,8 +1166,6 @@ void __init at91_add_device_pwm(u32 mask) 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 diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c index 9d3d544ac19c..7300523da6ea 100644 --- a/arch/arm/mach-at91/at91sam9g45.c +++ b/arch/arm/mach-at91/at91sam9g45.c @@ -251,6 +251,7 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID(NULL, "atmel_sha", &aestdessha_clk), CLKDEV_CON_DEV_ID(NULL, "atmel_tdes", &aestdessha_clk), CLKDEV_CON_DEV_ID(NULL, "atmel_aes", &aestdessha_clk), + CLKDEV_CON_DEV_ID(NULL, "at91sam9rl-pwm", &pwm_clk), /* more usart lookup table for DT entries */ CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck), CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk), diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index 391ab6bb536a..21ab782cc8e9 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -1334,9 +1334,7 @@ static void __init at91_add_device_watchdog(void) {} * PWM * --------------------------------------------------------------------*/ -#if defined(CONFIG_ATMEL_PWM) || defined(CONFIG_ATMEL_PWM_MODULE) -static u32 pwm_mask; - +#if IS_ENABLED(CONFIG_PWM_ATMEL) static struct resource pwm_resources[] = { [0] = { .start = AT91SAM9G45_BASE_PWMC, @@ -1351,11 +1349,8 @@ static struct resource pwm_resources[] = { }; static struct platform_device at91sam9g45_pwm0_device = { - .name = "atmel_pwm", + .name = "at91sam9rl-pwm", .id = -1, - .dev = { - .platform_data = &pwm_mask, - }, .resource = pwm_resources, .num_resources = ARRAY_SIZE(pwm_resources), }; @@ -1374,8 +1369,6 @@ void __init at91_add_device_pwm(u32 mask) 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 diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c index a79960f57e6a..878d5015daab 100644 --- a/arch/arm/mach-at91/at91sam9rl.c +++ b/arch/arm/mach-at91/at91sam9rl.c @@ -200,6 +200,7 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc1_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.1", &twi1_clk), + CLKDEV_CON_DEV_ID(NULL, "at91sam9rl-pwm", &pwm_clk), CLKDEV_CON_ID("pioA", &pioA_clk), CLKDEV_CON_ID("pioB", &pioB_clk), CLKDEV_CON_ID("pioC", &pioC_clk), diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index 0b1d71a7d9bf..37d1c9ed4562 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -799,9 +799,7 @@ static void __init at91_add_device_watchdog(void) {} * PWM * --------------------------------------------------------------------*/ -#if defined(CONFIG_ATMEL_PWM) -static u32 pwm_mask; - +#if IS_ENABLED(CONFIG_PWM_ATMEL) static struct resource pwm_resources[] = { [0] = { .start = AT91SAM9RL_BASE_PWMC, @@ -816,11 +814,8 @@ static struct resource pwm_resources[] = { }; static struct platform_device at91sam9rl_pwm0_device = { - .name = "atmel_pwm", + .name = "at91sam9rl-pwm", .id = -1, - .dev = { - .platform_data = &pwm_mask, - }, .resource = pwm_resources, .num_resources = ARRAY_SIZE(pwm_resources), }; @@ -839,8 +834,6 @@ void __init at91_add_device_pwm(u32 mask) 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 diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index cd2726ee5add..fc446097f410 100644 --- a/arch/arm/mach-at91/board-sam9263ek.c +++ b/arch/arm/mach-at91/board-sam9263ek.c @@ -32,6 +32,8 @@ #include <linux/gpio_keys.h> #include <linux/input.h> #include <linux/leds.h> +#include <linux/pwm.h> +#include <linux/leds_pwm.h> #include <video/atmel_lcdc.h> @@ -369,21 +371,47 @@ static struct gpio_led ek_leds[] = { .name = "ds3", .gpio = AT91_PIN_PB7, .default_trigger = "heartbeat", + }, +#if !IS_ENABLED(CONFIG_LEDS_PWM) + { + .name = "ds1", + .gpio = AT91_PIN_PB8, + .active_low = 1, + .default_trigger = "none", } +#endif }; /* * PWM Leds */ -static struct gpio_led ek_pwm_led[] = { - /* For now only DS1 is PWM-driven (by pwm1) */ +static struct pwm_lookup pwm_lookup[] = { + PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "ds1", + 5000, PWM_POLARITY_INVERSED), +}; + +#if IS_ENABLED(CONFIG_LEDS_PWM) +static struct led_pwm pwm_leds[] = { { - .name = "ds1", - .gpio = 1, /* is PWM channel number */ - .active_low = 1, - .default_trigger = "none", - } + .name = "ds1", + .max_brightness = 255, + }, +}; + +static struct led_pwm_platform_data pwm_data = { + .num_leds = ARRAY_SIZE(pwm_leds), + .leds = pwm_leds, +}; + +static struct platform_device leds_pwm = { + .name = "leds_pwm", + .id = -1, + .dev = { + .platform_data = &pwm_data, + }, }; +#endif + /* * CAN @@ -403,6 +431,12 @@ static struct at91_can_data ek_can_data = { .transceiver_switch = sam9263ek_transceiver_switch, }; +static struct platform_device *devices[] __initdata = { +#if IS_ENABLED(CONFIG_LEDS_PWM) + &leds_pwm, +#endif +}; + static void __init ek_board_init(void) { /* Serial */ @@ -437,9 +471,14 @@ static void __init ek_board_init(void) at91_add_device_ac97(&ek_ac97_data); /* LEDs */ at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds)); - at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led)); + pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); +#if IS_ENABLED(CONFIG_LEDS_PWM) + at91_add_device_pwm(1 << AT91_PWM1); +#endif /* CAN */ at91_add_device_can(&ek_can_data); + /* Other platform devices */ + platform_add_devices(devices, ARRAY_SIZE(devices)); } MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK") diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c index 1ea61328f30d..b227732b0c83 100644 --- a/arch/arm/mach-at91/board-sam9m10g45ek.c +++ b/arch/arm/mach-at91/board-sam9m10g45ek.c @@ -26,6 +26,8 @@ #include <linux/leds.h> #include <linux/atmel-mci.h> #include <linux/delay.h> +#include <linux/pwm.h> +#include <linux/leds_pwm.h> #include <linux/platform_data/at91_adc.h> @@ -416,7 +418,7 @@ static struct gpio_led ek_leds[] = { .active_low = 1, .default_trigger = "nand-disk", }, -#if !(defined(CONFIG_LEDS_ATMEL_PWM) || defined(CONFIG_LEDS_ATMEL_PWM_MODULE)) +#if !IS_ENABLED(CONFIG_LEDS_PWM) { /* "right" led, green, userled1, pwm1 */ .name = "d7", .gpio = AT91_PIN_PD31, @@ -430,22 +432,41 @@ static struct gpio_led ek_leds[] = { /* * PWM Leds */ -static struct gpio_led ek_pwm_led[] = { -#if defined(CONFIG_LEDS_ATMEL_PWM) || defined(CONFIG_LEDS_ATMEL_PWM_MODULE) +static struct pwm_lookup pwm_lookup[] = { + PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "d7", + 5000, PWM_POLARITY_INVERSED), +}; + +#if IS_ENABLED(CONFIG_LEDS_PWM) +static struct led_pwm pwm_leds[] = { { /* "right" led, green, userled1, pwm1 */ - .name = "d7", - .gpio = 1, /* is PWM channel number */ - .active_low = 1, - .default_trigger = "none", + .name = "d7", + .max_brightness = 255, }, -#endif }; +static struct led_pwm_platform_data pwm_data = { + .num_leds = ARRAY_SIZE(pwm_leds), + .leds = pwm_leds, +}; + +static struct platform_device leds_pwm = { + .name = "leds_pwm", + .id = -1, + .dev = { + .platform_data = &pwm_data, + }, +}; +#endif + static struct platform_device *devices[] __initdata = { #if defined(CONFIG_SOC_CAMERA_OV2640) || \ defined(CONFIG_SOC_CAMERA_OV2640_MODULE) &isi_ov2640, #endif +#if IS_ENABLED(CONFIG_LEDS_PWM) + &leds_pwm, +#endif }; static void __init ek_board_init(void) @@ -486,7 +507,10 @@ static void __init ek_board_init(void) at91_add_device_ac97(&ek_ac97_data); /* LEDs */ at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds)); - at91_pwm_leds(ek_pwm_led, ARRAY_SIZE(ek_pwm_led)); + pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); +#if IS_ENABLED(CONFIG_LEDS_PWM) + at91_add_device_pwm(1 << AT91_PWM1); +#endif /* Other platform devices */ platform_add_devices(devices, ARRAY_SIZE(devices)); } diff --git a/arch/arm/mach-at91/board.h b/arch/arm/mach-at91/board.h index 4e773b55bc2d..836e9a537e0c 100644 --- a/arch/arm/mach-at91/board.h +++ b/arch/arm/mach-at91/board.h @@ -123,6 +123,5 @@ extern void __init at91_add_device_can(struct at91_can_data *data); /* LEDs */ extern void __init at91_gpio_leds(struct gpio_led *leds, int nr); -extern void __init at91_pwm_leds(struct gpio_led *leds, int nr); #endif diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c index 77c4d8fd03fd..eb22e3357e87 100644 --- a/arch/arm/mach-at91/leds.c +++ b/arch/arm/mach-at91/leds.c @@ -54,40 +54,3 @@ void __init at91_gpio_leds(struct gpio_led *leds, int nr) void __init at91_gpio_leds(struct gpio_led *leds, int nr) {} #endif - -/* ------------------------------------------------------------------------- */ - -#if defined (CONFIG_LEDS_ATMEL_PWM) - -/* - * PWM Leds - */ - -static struct gpio_led_platform_data pwm_led_data; - -static struct platform_device at91_pwm_leds_device = { - .name = "leds-atmel-pwm", - .id = -1, - .dev.platform_data = &pwm_led_data, -}; - -void __init at91_pwm_leds(struct gpio_led *leds, int nr) -{ - int i; - u32 pwm_mask = 0; - - if (!nr) - return; - - for (i = 0; i < nr; i++) - pwm_mask |= (1 << leds[i].gpio); - - pwm_led_data.leds = leds; - pwm_led_data.num_leds = nr; - - at91_add_device_pwm(pwm_mask); - platform_device_register(&at91_pwm_leds_device); -} -#else -void __init at91_pwm_leds(struct gpio_led *leds, int nr){} -#endif diff --git a/arch/avr32/boards/atngw100/mrmt.c b/arch/avr32/boards/atngw100/mrmt.c index 1ba09e4c02b1..91146b416cdb 100644 --- a/arch/avr32/boards/atngw100/mrmt.c +++ b/arch/avr32/boards/atngw100/mrmt.c @@ -17,6 +17,8 @@ #include <linux/types.h> #include <linux/fb.h> #include <linux/leds.h> +#include <linux/pwm.h> +#include <linux/leds_pwm.h> #include <linux/input.h> #include <linux/gpio_keys.h> #include <linux/atmel_serial.h> @@ -155,21 +157,28 @@ static struct platform_device rmt_ts_device = { #ifdef CONFIG_BOARD_MRMT_BL_PWM /* PWM LEDs: LCD Backlight, etc */ -static struct gpio_led rmt_pwm_led[] = { - /* here the "gpio" is actually a PWM channel */ - { .name = "backlight", .gpio = PWM_CH_BL, }, +static struct pwm_lookup pwm_lookup[] = { + PWM_LOOKUP("at91sam9rl-pwm", PWM_CH_BL, "leds_pwm", "ds1", + 5000, PWM_POLARITY_INVERSED), }; -static struct gpio_led_platform_data rmt_pwm_led_data = { - .num_leds = ARRAY_SIZE(rmt_pwm_led), - .leds = rmt_pwm_led, +static struct led_pwm pwm_leds[] = { + { + .name = "backlight", + .max_brightness = 255, + }, +}; + +static struct led_pwm_platform_data pwm_data = { + .num_leds = ARRAY_SIZE(pwm_leds), + .leds = pwm_leds, }; -static struct platform_device rmt_pwm_led_dev = { - .name = "leds-atmel-pwm", - .id = -1, - .dev = { - .platform_data = &rmt_pwm_led_data, +static struct platform_device leds_pwm = { + .name = "leds_pwm", + .id = -1, + .dev = { + .platform_data = &pwm_data, }, }; #endif @@ -325,7 +334,8 @@ static int __init mrmt1_init(void) #ifdef CONFIG_BOARD_MRMT_BL_PWM /* Use PWM for Backlight controls */ at32_add_device_pwm(1 << PWM_CH_BL); - platform_device_register(&rmt_pwm_led_dev); + pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); + platform_device_register(&leds_pwm); #else /* Backlight always on */ udelay( 1 ); diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c index 1f121497b517..234cb071c601 100644 --- a/arch/avr32/boards/favr-32/setup.c +++ b/arch/avr32/boards/favr-32/setup.c @@ -18,7 +18,10 @@ #include <linux/gpio.h> #include <linux/leds.h> #include <linux/atmel-mci.h> -#include <linux/atmel-pwm-bl.h> +#include <linux/pwm.h> +#include <linux/pwm_backlight.h> +#include <linux/regulator/fixed.h> +#include <linux/regulator/machine.h> #include <linux/spi/spi.h> #include <linux/spi/ads7846.h> @@ -33,6 +36,8 @@ #include <mach/board.h> #include <mach/portmux.h> +#define PWM_BL_CH 2 + /* Oscillator frequencies. These are board-specific */ unsigned long at32_board_osc_rates[3] = { [0] = 32768, /* 32.768 kHz on RTC osc */ @@ -227,29 +232,36 @@ void __init favr32_setup_leds(void) platform_device_register(&favr32_led_dev); } -static struct atmel_pwm_bl_platform_data atmel_pwm_bl_pdata = { - .pwm_channel = 2, - .pwm_frequency = 200000, - .pwm_compare_max = 345, - .pwm_duty_max = 345, - .pwm_duty_min = 90, - .pwm_active_low = 1, - .gpio_on = GPIO_PIN_PA(28), - .on_active_low = 0, +static struct pwm_lookup pwm_lookup[] = { + PWM_LOOKUP("at91sam9rl-pwm", PWM_BL_CH, "pwm-backlight.0", NULL, + 5000, PWM_POLARITY_INVERSED), }; -static struct platform_device atmel_pwm_bl_dev = { - .name = "atmel-pwm-bl", - .id = 0, - .dev = { - .platform_data = &atmel_pwm_bl_pdata, +static struct regulator_consumer_supply fixed_power_consumers[] = { + REGULATOR_SUPPLY("power", "pwm-backlight.0"), +}; + +static struct platform_pwm_backlight_data pwm_bl_data = { + .enable_gpio = GPIO_PIN_PA(28), + .max_brightness = 255, + .dft_brightness = 255, + .lth_brightness = 50, +}; + +static struct platform_device pwm_bl_device = { + .name = "pwm-backlight", + .dev = { + .platform_data = &pwm_bl_data, }, }; static void __init favr32_setup_atmel_pwm_bl(void) { - platform_device_register(&atmel_pwm_bl_dev); - at32_select_gpio(atmel_pwm_bl_pdata.gpio_on, 0); + pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); + regulator_register_always_on(0, "fixed", fixed_power_consumers, + ARRAY_SIZE(fixed_power_consumers), 3300000); + platform_device_register(&pwm_bl_device); + at32_select_gpio(pwm_bl_data.enable_gpio, 0); } void __init setup_board(void) @@ -339,7 +351,7 @@ static int __init favr32_init(void) set_abdac_rate(at32_add_device_abdac(0, &abdac0_data)); - at32_add_device_pwm(1 << atmel_pwm_bl_pdata.pwm_channel); + at32_add_device_pwm(1 << PWM_BL_CH); at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); at32_add_device_mci(0, &mci0_data); at32_add_device_usba(0, NULL); diff --git a/arch/avr32/boards/merisc/setup.c b/arch/avr32/boards/merisc/setup.c index ed137e335796..83d896cc2aed 100644 --- a/arch/avr32/boards/merisc/setup.c +++ b/arch/avr32/boards/merisc/setup.c @@ -22,6 +22,8 @@ #include <linux/irq.h> #include <linux/fb.h> #include <linux/atmel-mci.h> +#include <linux/pwm.h> +#include <linux/leds_pwm.h> #include <asm/io.h> #include <asm/setup.h> @@ -167,24 +169,29 @@ static struct i2c_board_info __initdata i2c_info[] = { }, }; -#ifdef CONFIG_LEDS_ATMEL_PWM -static struct gpio_led stk_pwm_led[] = { +#if IS_ENABLED(CONFIG_LEDS_PWM) +static struct pwm_lookup pwm_lookup[] = { + PWM_LOOKUP("at91sam9rl-pwm", 0, "leds_pwm", "backlight", + 5000, PWM_POLARITY_NORMAL), +}; + +static struct led_pwm pwm_leds[] = { { .name = "backlight", - .gpio = 0, /* PWM channel 0 (LCD backlight) */ + .max_brightness = 255, }, }; -static struct gpio_led_platform_data stk_pwm_led_data = { - .num_leds = ARRAY_SIZE(stk_pwm_led), - .leds = stk_pwm_led, +static struct led_pwm_platform_data pwm_data = { + .num_leds = ARRAY_SIZE(pwm_leds), + .leds = pwm_leds, }; -static struct platform_device stk_pwm_led_dev = { - .name = "leds-atmel-pwm", - .id = -1, - .dev = { - .platform_data = &stk_pwm_led_data, +static struct platform_device leds_pwm = { + .name = "leds_pwm", + .id = -1, + .dev = { + .platform_data = &pwm_data, }, }; #endif @@ -278,9 +285,10 @@ static int __init merisc_init(void) at32_add_device_mci(0, &mci0_data); -#ifdef CONFIG_LEDS_ATMEL_PWM +#if IS_ENABLED(CONFIG_LEDS_PWM) + pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); at32_add_device_pwm((1 << 0) | (1 << 2)); - platform_device_register(&stk_pwm_led_dev); + platform_device_register(&leds_pwm); #else at32_add_device_pwm((1 << 2)); #endif diff --git a/arch/avr32/configs/atngw100_mrmt_defconfig b/arch/avr32/configs/atngw100_mrmt_defconfig index 9a57da44eb6f..6838781e966f 100644 --- a/arch/avr32/configs/atngw100_mrmt_defconfig +++ b/arch/avr32/configs/atngw100_mrmt_defconfig @@ -56,7 +56,6 @@ CONFIG_MTD_CFI_AMDSTD=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_DATAFLASH=y CONFIG_BLK_DEV_LOOP=y -CONFIG_ATMEL_PWM=y CONFIG_NETDEVICES=y CONFIG_NET_ETHERNET=y CONFIG_MACB=y @@ -104,8 +103,8 @@ CONFIG_MMC=y CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=y CONFIG_LEDS_GPIO=y +CONFIG_LEDS_PWM=y CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y @@ -114,6 +113,8 @@ CONFIG_RTC_DRV_S35390A=m CONFIG_RTC_DRV_AT32AP700X=m CONFIG_DMADEVICES=y CONFIG_UIO=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT3_FS=y diff --git a/arch/avr32/configs/atstk1002_defconfig b/arch/avr32/configs/atstk1002_defconfig index 2813dd2b9138..b056820eef33 100644 --- a/arch/avr32/configs/atstk1002_defconfig +++ b/arch/avr32/configs/atstk1002_defconfig @@ -64,7 +64,6 @@ CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=m CONFIG_MISC_DEVICES=y -CONFIG_ATMEL_PWM=m CONFIG_ATMEL_TCLIB=y CONFIG_ATMEL_SSC=m # CONFIG_SCSI_PROC_FS is not set @@ -133,14 +132,16 @@ CONFIG_MMC_TEST=m CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=m CONFIG_LEDS_GPIO=m +CONFIG_LEDS_PWM=m CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=m CONFIG_LEDS_TRIGGER_HEARTBEAT=m CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AT32AP700X=y CONFIG_DMADEVICES=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set diff --git a/arch/avr32/configs/atstk1003_defconfig b/arch/avr32/configs/atstk1003_defconfig index f8ff3a3baad4..0cd23a303da1 100644 --- a/arch/avr32/configs/atstk1003_defconfig +++ b/arch/avr32/configs/atstk1003_defconfig @@ -53,7 +53,6 @@ CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=m CONFIG_MISC_DEVICES=y -CONFIG_ATMEL_PWM=m CONFIG_ATMEL_TCLIB=y CONFIG_ATMEL_SSC=m # CONFIG_SCSI_PROC_FS is not set @@ -112,14 +111,16 @@ CONFIG_MMC_TEST=m CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=m CONFIG_LEDS_GPIO=m +CONFIG_LEDS_PWM=m CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=m CONFIG_LEDS_TRIGGER_HEARTBEAT=m CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AT32AP700X=y CONFIG_DMADEVICES=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set diff --git a/arch/avr32/configs/atstk1004_defconfig b/arch/avr32/configs/atstk1004_defconfig index 992228e54e38..ac1041f5f85a 100644 --- a/arch/avr32/configs/atstk1004_defconfig +++ b/arch/avr32/configs/atstk1004_defconfig @@ -53,7 +53,6 @@ CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=m CONFIG_MISC_DEVICES=y -CONFIG_ATMEL_PWM=m CONFIG_ATMEL_TCLIB=y CONFIG_ATMEL_SSC=m # CONFIG_SCSI_PROC_FS is not set @@ -111,14 +110,16 @@ CONFIG_MMC_TEST=m CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=m CONFIG_LEDS_GPIO=m +CONFIG_LEDS_PWM=m CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=m CONFIG_LEDS_TRIGGER_HEARTBEAT=m CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AT32AP700X=y CONFIG_DMADEVICES=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set diff --git a/arch/avr32/configs/atstk1006_defconfig b/arch/avr32/configs/atstk1006_defconfig index b8e698b0d1fa..ea4f670cb995 100644 --- a/arch/avr32/configs/atstk1006_defconfig +++ b/arch/avr32/configs/atstk1006_defconfig @@ -67,7 +67,6 @@ CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=m CONFIG_MISC_DEVICES=y -CONFIG_ATMEL_PWM=m CONFIG_ATMEL_TCLIB=y CONFIG_ATMEL_SSC=m # CONFIG_SCSI_PROC_FS is not set @@ -136,14 +135,16 @@ CONFIG_MMC_TEST=m CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=m CONFIG_LEDS_GPIO=m +CONFIG_LEDS_PWM=m CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=m CONFIG_LEDS_TRIGGER_HEARTBEAT=m CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AT32AP700X=y CONFIG_DMADEVICES=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set diff --git a/arch/avr32/configs/favr-32_defconfig b/arch/avr32/configs/favr-32_defconfig index 07bed3f7eb5e..b3eb67dc05ac 100644 --- a/arch/avr32/configs/favr-32_defconfig +++ b/arch/avr32/configs/favr-32_defconfig @@ -67,7 +67,6 @@ CONFIG_MTD_PHYSMAP=y CONFIG_BLK_DEV_LOOP=m CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=m -CONFIG_ATMEL_PWM=m CONFIG_ATMEL_TCLIB=y CONFIG_ATMEL_SSC=m CONFIG_NETDEVICES=y @@ -108,7 +107,7 @@ CONFIG_FB=y CONFIG_FB_ATMEL=y CONFIG_BACKLIGHT_LCD_SUPPORT=y # CONFIG_LCD_CLASS_DEVICE is not set -CONFIG_BACKLIGHT_ATMEL_PWM=m +CONFIG_BACKLIGHT_PWM=m CONFIG_SOUND=m CONFIG_SOUND_PRIME=m # CONFIG_HID_SUPPORT is not set @@ -123,7 +122,6 @@ CONFIG_MMC=y CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=m CONFIG_LEDS_GPIO=y CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=y @@ -132,6 +130,8 @@ CONFIG_LEDS_TRIGGER_DEFAULT_ON=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AT32AP700X=y CONFIG_DMADEVICES=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set diff --git a/arch/avr32/configs/merisc_defconfig b/arch/avr32/configs/merisc_defconfig index 91df6b2986be..b9ef4cc85d08 100644 --- a/arch/avr32/configs/merisc_defconfig +++ b/arch/avr32/configs/merisc_defconfig @@ -55,7 +55,6 @@ CONFIG_MTD_ABSENT=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_BLOCK2MTD=y CONFIG_BLK_DEV_LOOP=y -CONFIG_ATMEL_PWM=y CONFIG_ATMEL_SSC=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y @@ -103,12 +102,14 @@ CONFIG_MMC=y CONFIG_MMC_ATMELMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y -CONFIG_LEDS_ATMEL_PWM=y +CONFIG_LEDS_PWM=y CONFIG_RTC_CLASS=y # CONFIG_RTC_HCTOSYS is not set CONFIG_RTC_DRV_PCF8563=y CONFIG_DMADEVICES=y CONFIG_UIO=y +CONFIG_PWM=y +CONFIG_PWM_ATMEL=m CONFIG_EXT2_FS=y # CONFIG_DNOTIFY is not set CONFIG_FUSE_FS=y diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index a1f4d1e91b52..db85b5ec3351 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1553,7 +1553,7 @@ static struct resource atmel_pwm0_resource[] __initdata = { IRQ(24), }; static struct clk atmel_pwm0_mck = { - .name = "pwm_clk", + .name = "at91sam9rl-pwm", .parent = &pbb_clk, .mode = pbb_clk_mode, .get_rate = pbb_clk_get_rate, @@ -1568,7 +1568,7 @@ struct platform_device *__init at32_add_device_pwm(u32 mask) if (!mask) return NULL; - pdev = platform_device_alloc("atmel_pwm", 0); + pdev = platform_device_alloc("at91sam9rl-pwm", 0); if (!pdev) return NULL; @@ -1576,9 +1576,6 @@ struct platform_device *__init at32_add_device_pwm(u32 mask) ARRAY_SIZE(atmel_pwm0_resource))) goto out_free_pdev; - if (platform_device_add_data(pdev, &mask, sizeof(mask))) - goto out_free_pdev; - pin_mask = 0; if (mask & (1 << 0)) pin_mask |= (1 << 28); diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index a1b044e7eaad..8736f69262f9 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -32,14 +32,6 @@ config LEDS_88PM860X This option enables support for on-chip LED drivers found on Marvell Semiconductor 88PM8606 PMIC. -config LEDS_ATMEL_PWM - tristate "LED Support using Atmel PWM outputs" - depends on LEDS_CLASS - depends on ATMEL_PWM - help - This option enables support for LEDs driven using outputs - of the dedicated PWM controller found on newer Atmel SOCs. - config LEDS_LM3530 tristate "LCD Backlight driver for LM3530" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 79c5155199a7..3c036663f17b 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -6,7 +6,6 @@ obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o # LED Platform Drivers obj-$(CONFIG_LEDS_88PM860X) += leds-88pm860x.o -obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o obj-$(CONFIG_LEDS_LM3530) += leds-lm3530.o diff --git a/drivers/leds/leds-atmel-pwm.c b/drivers/leds/leds-atmel-pwm.c deleted file mode 100644 index 56cec8d6a2ac..000000000000 --- a/drivers/leds/leds-atmel-pwm.c +++ /dev/null @@ -1,149 +0,0 @@ -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/leds.h> -#include <linux/io.h> -#include <linux/atmel_pwm.h> -#include <linux/slab.h> -#include <linux/module.h> - - -struct pwmled { - struct led_classdev cdev; - struct pwm_channel pwmc; - struct gpio_led *desc; - u32 mult; - u8 active_low; -}; - - -/* - * For simplicity, we use "brightness" as if it were a linear function - * of PWM duty cycle. However, a logarithmic function of duty cycle is - * probably a better match for perceived brightness: two is half as bright - * as four, four is half as bright as eight, etc - */ -static void pwmled_brightness(struct led_classdev *cdev, enum led_brightness b) -{ - struct pwmled *led; - - /* update the duty cycle for the *next* period */ - led = container_of(cdev, struct pwmled, cdev); - pwm_channel_writel(&led->pwmc, PWM_CUPD, led->mult * (unsigned) b); -} - -/* - * NOTE: we reuse the platform_data structure of GPIO leds, - * but repurpose its "gpio" number as a PWM channel number. - */ -static int pwmled_probe(struct platform_device *pdev) -{ - const struct gpio_led_platform_data *pdata; - struct pwmled *leds; - int i; - int status; - - pdata = dev_get_platdata(&pdev->dev); - if (!pdata || pdata->num_leds < 1) - return -ENODEV; - - leds = devm_kzalloc(&pdev->dev, pdata->num_leds * sizeof(*leds), - GFP_KERNEL); - if (!leds) - return -ENOMEM; - - for (i = 0; i < pdata->num_leds; i++) { - struct pwmled *led = leds + i; - const struct gpio_led *dat = pdata->leds + i; - u32 tmp; - - led->cdev.name = dat->name; - led->cdev.brightness = LED_OFF; - led->cdev.brightness_set = pwmled_brightness; - led->cdev.default_trigger = dat->default_trigger; - - led->active_low = dat->active_low; - - status = pwm_channel_alloc(dat->gpio, &led->pwmc); - if (status < 0) - goto err; - - /* - * Prescale clock by 2^x, so PWM counts in low MHz. - * Start each cycle with the LED active, so increasing - * the duty cycle gives us more time on (== brighter). - */ - tmp = 5; - if (!led->active_low) - tmp |= PWM_CPR_CPOL; - pwm_channel_writel(&led->pwmc, PWM_CMR, tmp); - - /* - * Pick a period so PWM cycles at 100+ Hz; and a multiplier - * for scaling duty cycle: brightness * mult. - */ - tmp = (led->pwmc.mck / (1 << 5)) / 100; - tmp /= 255; - led->mult = tmp; - pwm_channel_writel(&led->pwmc, PWM_CDTY, - led->cdev.brightness * 255); - pwm_channel_writel(&led->pwmc, PWM_CPRD, - LED_FULL * tmp); - - pwm_channel_enable(&led->pwmc); - - /* Hand it over to the LED framework */ - status = led_classdev_register(&pdev->dev, &led->cdev); - if (status < 0) { - pwm_channel_free(&led->pwmc); - goto err; - } - } - - platform_set_drvdata(pdev, leds); - return 0; - -err: - if (i > 0) { - for (i = i - 1; i >= 0; i--) { - led_classdev_unregister(&leds[i].cdev); - pwm_channel_free(&leds[i].pwmc); - } - } - - return status; -} - -static int pwmled_remove(struct platform_device *pdev) -{ - const struct gpio_led_platform_data *pdata; - struct pwmled *leds; - unsigned i; - - pdata = dev_get_platdata(&pdev->dev); - leds = platform_get_drvdata(pdev); - - for (i = 0; i < pdata->num_leds; i++) { - struct pwmled *led = leds + i; - - led_classdev_unregister(&led->cdev); - pwm_channel_free(&led->pwmc); - } - - return 0; -} - -static struct platform_driver pwmled_driver = { - .driver = { - .name = "leds-atmel-pwm", - .owner = THIS_MODULE, - }, - /* REVISIT add suspend() and resume() methods */ - .probe = pwmled_probe, - .remove = pwmled_remove, -}; - -module_platform_driver(pwmled_driver); - -MODULE_DESCRIPTION("Driver for LEDs with PWM-controlled brightness"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:leds-atmel-pwm"); diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index ee9402324a23..b841180c7c74 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -51,16 +51,6 @@ config AD525X_DPOT_SPI To compile this driver as a module, choose M here: the module will be called ad525x_dpot-spi. -config ATMEL_PWM - tristate "Atmel AT32/AT91 PWM support" - depends on HAVE_CLK - depends on AVR32 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45 - help - This option enables device driver support for the PWM channels - on certain Atmel processors. Pulse Width Modulation is used for - purposes including software controlled power-efficient backlights - on LCD displays, motor control, and waveform generation. - config ATMEL_TCLIB bool "Atmel AT32/AT91 Timer/Counter Library" depends on (AVR32 || ARCH_AT91) diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index d59ce1261b38..5497d026e651 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot.o obj-$(CONFIG_AD525X_DPOT_I2C) += ad525x_dpot-i2c.o obj-$(CONFIG_AD525X_DPOT_SPI) += ad525x_dpot-spi.o obj-$(CONFIG_INTEL_MID_PTI) += pti.o -obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o obj-$(CONFIG_BMP085) += bmp085.o diff --git a/drivers/misc/atmel_pwm.c b/drivers/misc/atmel_pwm.c deleted file mode 100644 index a6dc56e1bc58..000000000000 --- a/drivers/misc/atmel_pwm.c +++ /dev/null @@ -1,402 +0,0 @@ -#include <linux/module.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/atmel_pwm.h> - - -/* - * This is a simple driver for the PWM controller found in various newer - * Atmel SOCs, including the AVR32 series and the AT91sam9263. - * - * Chips with current Linux ports have only 4 PWM channels, out of max 32. - * AT32UC3A and AT32UC3B chips have 7 channels (but currently no Linux). - * Docs are inconsistent about the width of the channel counter registers; - * it's at least 16 bits, but several places say 20 bits. - */ -#define PWM_NCHAN 4 /* max 32 */ - -struct pwm { - spinlock_t lock; - struct platform_device *pdev; - u32 mask; - int irq; - void __iomem *base; - struct clk *clk; - struct pwm_channel *channel[PWM_NCHAN]; - void (*handler[PWM_NCHAN])(struct pwm_channel *); -}; - - -/* global PWM controller registers */ -#define PWM_MR 0x00 -#define PWM_ENA 0x04 -#define PWM_DIS 0x08 -#define PWM_SR 0x0c -#define PWM_IER 0x10 -#define PWM_IDR 0x14 -#define PWM_IMR 0x18 -#define PWM_ISR 0x1c - -static inline void pwm_writel(const struct pwm *p, unsigned offset, u32 val) -{ - __raw_writel(val, p->base + offset); -} - -static inline u32 pwm_readl(const struct pwm *p, unsigned offset) -{ - return __raw_readl(p->base + offset); -} - -static inline void __iomem *pwmc_regs(const struct pwm *p, int index) -{ - return p->base + 0x200 + index * 0x20; -} - -static struct pwm *pwm; - -static void pwm_dumpregs(struct pwm_channel *ch, char *tag) -{ - struct device *dev = &pwm->pdev->dev; - - dev_dbg(dev, "%s: mr %08x, sr %08x, imr %08x\n", - tag, - pwm_readl(pwm, PWM_MR), - pwm_readl(pwm, PWM_SR), - pwm_readl(pwm, PWM_IMR)); - dev_dbg(dev, - "pwm ch%d - mr %08x, dty %u, prd %u, cnt %u\n", - ch->index, - pwm_channel_readl(ch, PWM_CMR), - pwm_channel_readl(ch, PWM_CDTY), - pwm_channel_readl(ch, PWM_CPRD), - pwm_channel_readl(ch, PWM_CCNT)); -} - - -/** - * pwm_channel_alloc - allocate an unused PWM channel - * @index: identifies the channel - * @ch: structure to be initialized - * - * Drivers allocate PWM channels according to the board's wiring, and - * matching board-specific setup code. Returns zero or negative errno. - */ -int pwm_channel_alloc(int index, struct pwm_channel *ch) -{ - unsigned long flags; - int status = 0; - - if (!pwm) - return -EPROBE_DEFER; - - if (!(pwm->mask & 1 << index)) - return -ENODEV; - - if (index < 0 || index >= PWM_NCHAN || !ch) - return -EINVAL; - memset(ch, 0, sizeof *ch); - - spin_lock_irqsave(&pwm->lock, flags); - if (pwm->channel[index]) - status = -EBUSY; - else { - clk_enable(pwm->clk); - - ch->regs = pwmc_regs(pwm, index); - ch->index = index; - - /* REVISIT: ap7000 seems to go 2x as fast as we expect!! */ - ch->mck = clk_get_rate(pwm->clk); - - pwm->channel[index] = ch; - pwm->handler[index] = NULL; - - /* channel and irq are always disabled when we return */ - pwm_writel(pwm, PWM_DIS, 1 << index); - pwm_writel(pwm, PWM_IDR, 1 << index); - } - spin_unlock_irqrestore(&pwm->lock, flags); - return status; -} -EXPORT_SYMBOL(pwm_channel_alloc); - -static int pwmcheck(struct pwm_channel *ch) -{ - int index; - - if (!pwm) - return -ENODEV; - if (!ch) - return -EINVAL; - index = ch->index; - if (index < 0 || index >= PWM_NCHAN || pwm->channel[index] != ch) - return -EINVAL; - - return index; -} - -/** - * pwm_channel_free - release a previously allocated channel - * @ch: the channel being released - * - * The channel is completely shut down (counter and IRQ disabled), - * and made available for re-use. Returns zero, or negative errno. - */ -int pwm_channel_free(struct pwm_channel *ch) -{ - unsigned long flags; - int t; - - spin_lock_irqsave(&pwm->lock, flags); - t = pwmcheck(ch); - if (t >= 0) { - pwm->channel[t] = NULL; - pwm->handler[t] = NULL; - - /* channel and irq are always disabled when we return */ - pwm_writel(pwm, PWM_DIS, 1 << t); - pwm_writel(pwm, PWM_IDR, 1 << t); - - clk_disable(pwm->clk); - t = 0; - } - spin_unlock_irqrestore(&pwm->lock, flags); - return t; -} -EXPORT_SYMBOL(pwm_channel_free); - -int __pwm_channel_onoff(struct pwm_channel *ch, int enabled) -{ - unsigned long flags; - int t; - - /* OMITTED FUNCTIONALITY: starting several channels in synch */ - - spin_lock_irqsave(&pwm->lock, flags); - t = pwmcheck(ch); - if (t >= 0) { - pwm_writel(pwm, enabled ? PWM_ENA : PWM_DIS, 1 << t); - t = 0; - pwm_dumpregs(ch, enabled ? "enable" : "disable"); - } - spin_unlock_irqrestore(&pwm->lock, flags); - - return t; -} -EXPORT_SYMBOL(__pwm_channel_onoff); - -/** - * pwm_clk_alloc - allocate and configure CLKA or CLKB - * @prescale: from 0..10, the power of two used to divide MCK - * @div: from 1..255, the linear divisor to use - * - * Returns PWM_CPR_CLKA, PWM_CPR_CLKB, or negative errno. The allocated - * clock will run with a period of (2^prescale * div) / MCK, or twice as - * long if center aligned PWM output is used. The clock must later be - * deconfigured using pwm_clk_free(). - */ -int pwm_clk_alloc(unsigned prescale, unsigned div) -{ - unsigned long flags; - u32 mr; - u32 val = (prescale << 8) | div; - int ret = -EBUSY; - - if (prescale >= 10 || div == 0 || div > 255) - return -EINVAL; - - spin_lock_irqsave(&pwm->lock, flags); - mr = pwm_readl(pwm, PWM_MR); - if ((mr & 0xffff) == 0) { - mr |= val; - ret = PWM_CPR_CLKA; - } else if ((mr & (0xffff << 16)) == 0) { - mr |= val << 16; - ret = PWM_CPR_CLKB; - } - if (ret > 0) - pwm_writel(pwm, PWM_MR, mr); - spin_unlock_irqrestore(&pwm->lock, flags); - return ret; -} -EXPORT_SYMBOL(pwm_clk_alloc); - -/** - * pwm_clk_free - deconfigure and release CLKA or CLKB - * - * Reverses the effect of pwm_clk_alloc(). - */ -void pwm_clk_free(unsigned clk) -{ - unsigned long flags; - u32 mr; - - spin_lock_irqsave(&pwm->lock, flags); - mr = pwm_readl(pwm, PWM_MR); - if (clk == PWM_CPR_CLKA) - pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 0)); - if (clk == PWM_CPR_CLKB) - pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 16)); - spin_unlock_irqrestore(&pwm->lock, flags); -} -EXPORT_SYMBOL(pwm_clk_free); - -/** - * pwm_channel_handler - manage channel's IRQ handler - * @ch: the channel - * @handler: the handler to use, possibly NULL - * - * If the handler is non-null, the handler will be called after every - * period of this PWM channel. If the handler is null, this channel - * won't generate an IRQ. - */ -int pwm_channel_handler(struct pwm_channel *ch, - void (*handler)(struct pwm_channel *ch)) -{ - unsigned long flags; - int t; - - spin_lock_irqsave(&pwm->lock, flags); - t = pwmcheck(ch); - if (t >= 0) { - pwm->handler[t] = handler; - pwm_writel(pwm, handler ? PWM_IER : PWM_IDR, 1 << t); - t = 0; - } - spin_unlock_irqrestore(&pwm->lock, flags); - - return t; -} -EXPORT_SYMBOL(pwm_channel_handler); - -static irqreturn_t pwm_irq(int id, void *_pwm) -{ - struct pwm *p = _pwm; - irqreturn_t handled = IRQ_NONE; - u32 irqstat; - int index; - - spin_lock(&p->lock); - - /* ack irqs, then handle them */ - irqstat = pwm_readl(pwm, PWM_ISR); - - while (irqstat) { - struct pwm_channel *ch; - void (*handler)(struct pwm_channel *ch); - - index = ffs(irqstat) - 1; - irqstat &= ~(1 << index); - ch = pwm->channel[index]; - handler = pwm->handler[index]; - if (handler && ch) { - spin_unlock(&p->lock); - handler(ch); - spin_lock(&p->lock); - handled = IRQ_HANDLED; - } - } - - spin_unlock(&p->lock); - return handled; -} - -static int __init pwm_probe(struct platform_device *pdev) -{ - struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - int irq = platform_get_irq(pdev, 0); - u32 *mp = pdev->dev.platform_data; - struct pwm *p; - int status = -EIO; - - if (pwm) - return -EBUSY; - if (!r || irq < 0 || !mp || !*mp) - return -ENODEV; - if (*mp & ~((1<<PWM_NCHAN)-1)) { - dev_warn(&pdev->dev, "mask 0x%x ... more than %d channels\n", - *mp, PWM_NCHAN); - return -EINVAL; - } - - p = kzalloc(sizeof(*p), GFP_KERNEL); - if (!p) - return -ENOMEM; - - spin_lock_init(&p->lock); - p->pdev = pdev; - p->mask = *mp; - p->irq = irq; - p->base = ioremap(r->start, resource_size(r)); - if (!p->base) - goto fail; - p->clk = clk_get(&pdev->dev, "pwm_clk"); - if (IS_ERR(p->clk)) { - status = PTR_ERR(p->clk); - p->clk = NULL; - goto fail; - } - - status = request_irq(irq, pwm_irq, 0, pdev->name, p); - if (status < 0) - goto fail; - - pwm = p; - platform_set_drvdata(pdev, p); - - return 0; - -fail: - if (p->clk) - clk_put(p->clk); - if (p->base) - iounmap(p->base); - - kfree(p); - return status; -} - -static int __exit pwm_remove(struct platform_device *pdev) -{ - struct pwm *p = platform_get_drvdata(pdev); - - if (p != pwm) - return -EINVAL; - - clk_enable(pwm->clk); - pwm_writel(pwm, PWM_DIS, (1 << PWM_NCHAN) - 1); - pwm_writel(pwm, PWM_IDR, (1 << PWM_NCHAN) - 1); - clk_disable(pwm->clk); - - pwm = NULL; - - free_irq(p->irq, p); - clk_put(p->clk); - iounmap(p->base); - kfree(p); - - return 0; -} - -static struct platform_driver atmel_pwm_driver = { - .driver = { - .name = "atmel_pwm", - .owner = THIS_MODULE, - }, - .remove = __exit_p(pwm_remove), - - /* NOTE: PWM can keep running in AVR32 "idle" and "frozen" states; - * and all AT91sam9263 states, albeit at reduced clock rate if - * MCK becomes the slow clock (i.e. what Linux labels STR). - */ -}; - -module_platform_driver_probe(atmel_pwm_driver, pwm_probe); - -MODULE_DESCRIPTION("Driver for AT32/AT91 PWM module"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:atmel_pwm"); diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 4ad7b89a4cb4..331dfca415c7 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -43,7 +43,7 @@ config PWM_AB8500 config PWM_ATMEL tristate "Atmel PWM support" - depends on ARCH_AT91 + depends on ARCH_AT91 || AVR32 help Generic PWM framework driver for Atmel SoC. diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 5d449059a556..c3c18339b8cb 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -178,17 +178,6 @@ config BACKLIGHT_ATMEL_LCDC If in doubt, it's safe to enable this option; it doesn't kick in unless the board's description says it's wired that way. -config BACKLIGHT_ATMEL_PWM - tristate "Atmel PWM backlight control" - depends on ATMEL_PWM - help - Say Y here if you want to use the PWM peripheral in Atmel AT91 and - AVR32 devices. This driver will need additional platform data to know - which PWM instance to use and how to configure it. - - To compile this driver as a module, choose M here: the module will be - called atmel-pwm-bl. - config BACKLIGHT_EP93XX tristate "Cirrus EP93xx Backlight Driver" depends on FB_EP93XX diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index bb820024f346..351451dbb607 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -25,7 +25,6 @@ obj-$(CONFIG_BACKLIGHT_ADP8860) += adp8860_bl.o obj-$(CONFIG_BACKLIGHT_ADP8870) += adp8870_bl.o obj-$(CONFIG_BACKLIGHT_APPLE) += apple_bl.o obj-$(CONFIG_BACKLIGHT_AS3711) += as3711_bl.o -obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o obj-$(CONFIG_BACKLIGHT_BD6107) += bd6107.o obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c deleted file mode 100644 index 261b1a4ec3d8..000000000000 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (C) 2008 Atmel Corporation - * - * Backlight driver using Atmel PWM peripheral. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/fb.h> -#include <linux/gpio.h> -#include <linux/backlight.h> -#include <linux/atmel_pwm.h> -#include <linux/atmel-pwm-bl.h> -#include <linux/slab.h> - -struct atmel_pwm_bl { - const struct atmel_pwm_bl_platform_data *pdata; - struct backlight_device *bldev; - struct platform_device *pdev; - struct pwm_channel pwmc; - int gpio_on; -}; - -static void atmel_pwm_bl_set_gpio_on(struct atmel_pwm_bl *pwmbl, int on) -{ - if (!gpio_is_valid(pwmbl->gpio_on)) - return; - - gpio_set_value(pwmbl->gpio_on, on ^ pwmbl->pdata->on_active_low); -} - -static int atmel_pwm_bl_set_intensity(struct backlight_device *bd) -{ - struct atmel_pwm_bl *pwmbl = bl_get_data(bd); - int intensity = bd->props.brightness; - int pwm_duty; - - if (bd->props.power != FB_BLANK_UNBLANK) - intensity = 0; - if (bd->props.fb_blank != FB_BLANK_UNBLANK) - intensity = 0; - - if (pwmbl->pdata->pwm_active_low) - pwm_duty = pwmbl->pdata->pwm_duty_min + intensity; - else - pwm_duty = pwmbl->pdata->pwm_duty_max - intensity; - - if (pwm_duty > pwmbl->pdata->pwm_duty_max) - pwm_duty = pwmbl->pdata->pwm_duty_max; - if (pwm_duty < pwmbl->pdata->pwm_duty_min) - pwm_duty = pwmbl->pdata->pwm_duty_min; - - if (!intensity) { - atmel_pwm_bl_set_gpio_on(pwmbl, 0); - pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty); - pwm_channel_disable(&pwmbl->pwmc); - } else { - pwm_channel_enable(&pwmbl->pwmc); - pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty); - atmel_pwm_bl_set_gpio_on(pwmbl, 1); - } - - return 0; -} - -static int atmel_pwm_bl_get_intensity(struct backlight_device *bd) -{ - struct atmel_pwm_bl *pwmbl = bl_get_data(bd); - u32 cdty; - u32 intensity; - - cdty = pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY); - if (pwmbl->pdata->pwm_active_low) - intensity = cdty - pwmbl->pdata->pwm_duty_min; - else - intensity = pwmbl->pdata->pwm_duty_max - cdty; - - return intensity & 0xffff; -} - -static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl) -{ - unsigned long pwm_rate = pwmbl->pwmc.mck; - unsigned long prescale = DIV_ROUND_UP(pwm_rate, - (pwmbl->pdata->pwm_frequency * - pwmbl->pdata->pwm_compare_max)) - 1; - - /* - * Prescale must be power of two and maximum 0xf in size because of - * hardware limit. PWM speed will be: - * PWM module clock speed / (2 ^ prescale). - */ - prescale = fls(prescale); - if (prescale > 0xf) - prescale = 0xf; - - pwm_channel_writel(&pwmbl->pwmc, PWM_CMR, prescale); - pwm_channel_writel(&pwmbl->pwmc, PWM_CDTY, - pwmbl->pdata->pwm_duty_min + - pwmbl->bldev->props.brightness); - pwm_channel_writel(&pwmbl->pwmc, PWM_CPRD, - pwmbl->pdata->pwm_compare_max); - - dev_info(&pwmbl->pdev->dev, "Atmel PWM backlight driver (%lu Hz)\n", - pwmbl->pwmc.mck / pwmbl->pdata->pwm_compare_max / - (1 << prescale)); - - return pwm_channel_enable(&pwmbl->pwmc); -} - -static const struct backlight_ops atmel_pwm_bl_ops = { - .get_brightness = atmel_pwm_bl_get_intensity, - .update_status = atmel_pwm_bl_set_intensity, -}; - -static int atmel_pwm_bl_probe(struct platform_device *pdev) -{ - struct backlight_properties props; - const struct atmel_pwm_bl_platform_data *pdata; - struct backlight_device *bldev; - struct atmel_pwm_bl *pwmbl; - unsigned long flags; - int retval; - - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) - return -ENODEV; - - if (pdata->pwm_compare_max < pdata->pwm_duty_max || - pdata->pwm_duty_min > pdata->pwm_duty_max || - pdata->pwm_frequency == 0) - return -EINVAL; - - pwmbl = devm_kzalloc(&pdev->dev, sizeof(struct atmel_pwm_bl), - GFP_KERNEL); - if (!pwmbl) - return -ENOMEM; - - pwmbl->pdev = pdev; - pwmbl->pdata = pdata; - pwmbl->gpio_on = pdata->gpio_on; - - retval = pwm_channel_alloc(pdata->pwm_channel, &pwmbl->pwmc); - if (retval) - return retval; - - if (gpio_is_valid(pwmbl->gpio_on)) { - /* Turn display off by default. */ - if (pdata->on_active_low) - flags = GPIOF_OUT_INIT_HIGH; - else - flags = GPIOF_OUT_INIT_LOW; - - retval = devm_gpio_request_one(&pdev->dev, pwmbl->gpio_on, - flags, "gpio_atmel_pwm_bl"); - if (retval) - goto err_free_pwm; - } - - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = pdata->pwm_duty_max - pdata->pwm_duty_min; - bldev = devm_backlight_device_register(&pdev->dev, "atmel-pwm-bl", - &pdev->dev, pwmbl, &atmel_pwm_bl_ops, - &props); - if (IS_ERR(bldev)) { - retval = PTR_ERR(bldev); - goto err_free_pwm; - } - - pwmbl->bldev = bldev; - - platform_set_drvdata(pdev, pwmbl); - - /* Power up the backlight by default at middle intesity. */ - bldev->props.power = FB_BLANK_UNBLANK; - bldev->props.brightness = bldev->props.max_brightness / 2; - - retval = atmel_pwm_bl_init_pwm(pwmbl); - if (retval) - goto err_free_pwm; - - atmel_pwm_bl_set_intensity(bldev); - - return 0; - -err_free_pwm: - pwm_channel_free(&pwmbl->pwmc); - - return retval; -} - -static int atmel_pwm_bl_remove(struct platform_device *pdev) -{ - struct atmel_pwm_bl *pwmbl = platform_get_drvdata(pdev); - - atmel_pwm_bl_set_gpio_on(pwmbl, 0); - pwm_channel_disable(&pwmbl->pwmc); - pwm_channel_free(&pwmbl->pwmc); - - return 0; -} - -static struct platform_driver atmel_pwm_bl_driver = { - .driver = { - .name = "atmel-pwm-bl", - }, - /* REVISIT add suspend() and resume() */ - .probe = atmel_pwm_bl_probe, - .remove = atmel_pwm_bl_remove, -}; - -module_platform_driver(atmel_pwm_bl_driver); - -MODULE_AUTHOR("Hans-Christian egtvedt <[email protected]>"); -MODULE_DESCRIPTION("Atmel PWM backlight driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:atmel-pwm-bl"); diff --git a/include/linux/atmel-pwm-bl.h b/include/linux/atmel-pwm-bl.h deleted file mode 100644 index 0153a47806c2..000000000000 --- a/include/linux/atmel-pwm-bl.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (C) 2007 Atmel Corporation - * - * Driver for the AT32AP700X PS/2 controller (PSIF). - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#ifndef __INCLUDE_ATMEL_PWM_BL_H -#define __INCLUDE_ATMEL_PWM_BL_H - -/** - * struct atmel_pwm_bl_platform_data - * @pwm_channel: which PWM channel in the PWM module to use. - * @pwm_frequency: PWM frequency to generate, the driver will try to be as - * close as the prescaler allows. - * @pwm_compare_max: value to use in the PWM channel compare register. - * @pwm_duty_max: maximum duty cycle value, must be less than or equal to - * pwm_compare_max. - * @pwm_duty_min: minimum duty cycle value, must be less than pwm_duty_max. - * @pwm_active_low: set to one if the low part of the PWM signal increases the - * brightness of the backlight. - * @gpio_on: GPIO line to control the backlight on/off, set to -1 if not used. - * @on_active_low: set to one if the on/off signal is on when GPIO is low. - * - * This struct must be added to the platform device in the board code. It is - * used by the atmel-pwm-bl driver to setup the GPIO to control on/off and the - * PWM device. - */ -struct atmel_pwm_bl_platform_data { - unsigned int pwm_channel; - unsigned int pwm_frequency; - unsigned int pwm_compare_max; - unsigned int pwm_duty_max; - unsigned int pwm_duty_min; - unsigned int pwm_active_low; - int gpio_on; - unsigned int on_active_low; -}; - -#endif /* __INCLUDE_ATMEL_PWM_BL_H */ diff --git a/include/linux/atmel_pwm.h b/include/linux/atmel_pwm.h deleted file mode 100644 index ea04abb3db8e..000000000000 --- a/include/linux/atmel_pwm.h +++ /dev/null @@ -1,70 +0,0 @@ -#ifndef __LINUX_ATMEL_PWM_H -#define __LINUX_ATMEL_PWM_H - -/** - * struct pwm_channel - driver handle to a PWM channel - * @regs: base of this channel's registers - * @index: number of this channel (0..31) - * @mck: base clock rate, which can be prescaled and maybe subdivided - * - * Drivers initialize a pwm_channel structure using pwm_channel_alloc(). - * Then they configure its clock rate (derived from MCK), alignment, - * polarity, and duty cycle by writing directly to the channel registers, - * before enabling the channel by calling pwm_channel_enable(). - * - * After emitting a PWM signal for the desired length of time, drivers - * may then pwm_channel_disable() or pwm_channel_free(). Both of these - * disable the channel, but when it's freed the IRQ is deconfigured and - * the channel must later be re-allocated and reconfigured. - * - * Note that if the period or duty cycle need to be changed while the - * PWM channel is operating, drivers must use the PWM_CUPD double buffer - * mechanism, either polling until they change or getting implicitly - * notified through a once-per-period interrupt handler. - */ -struct pwm_channel { - void __iomem *regs; - unsigned index; - unsigned long mck; -}; - -extern int pwm_channel_alloc(int index, struct pwm_channel *ch); -extern int pwm_channel_free(struct pwm_channel *ch); - -extern int pwm_clk_alloc(unsigned prescale, unsigned div); -extern void pwm_clk_free(unsigned clk); - -extern int __pwm_channel_onoff(struct pwm_channel *ch, int enabled); - -#define pwm_channel_enable(ch) __pwm_channel_onoff((ch), 1) -#define pwm_channel_disable(ch) __pwm_channel_onoff((ch), 0) - -/* periodic interrupts, mostly for CUPD changes to period or cycle */ -extern int pwm_channel_handler(struct pwm_channel *ch, - void (*handler)(struct pwm_channel *ch)); - -/* per-channel registers (banked at pwm_channel->regs) */ -#define PWM_CMR 0x00 /* mode register */ -#define PWM_CPR_CPD (1 << 10) /* set: CUPD modifies period */ -#define PWM_CPR_CPOL (1 << 9) /* set: idle high */ -#define PWM_CPR_CALG (1 << 8) /* set: center align */ -#define PWM_CPR_CPRE (0xf << 0) /* mask: rate is mck/(2^pre) */ -#define PWM_CPR_CLKA (0xb << 0) /* rate CLKA */ -#define PWM_CPR_CLKB (0xc << 0) /* rate CLKB */ -#define PWM_CDTY 0x04 /* duty cycle (max of CPRD) */ -#define PWM_CPRD 0x08 /* period (count up from zero) */ -#define PWM_CCNT 0x0c /* counter (20 bits?) */ -#define PWM_CUPD 0x10 /* update CPRD (or CDTY) next period */ - -static inline void -pwm_channel_writel(struct pwm_channel *pwmc, unsigned offset, u32 val) -{ - __raw_writel(val, pwmc->regs + offset); -} - -static inline u32 pwm_channel_readl(struct pwm_channel *pwmc, unsigned offset) -{ - return __raw_readl(pwmc->regs + offset); -} - -#endif /* __LINUX_ATMEL_PWM_H */ |