From ca26308c2223cb424c297a70fb7b6c7530a563ba Mon Sep 17 00:00:00 2001 From: Miguel Aguilar Date: Thu, 11 Mar 2010 09:32:21 -0600 Subject: MFD: DaVinci Voice Codec This is the MFD driver for the DaVinci Voice codec, it has two clients: * Voice codec interface * Voice codec CQ93VC Signed-off-by: Miguel Aguilar Acked-by: Samuel Ortiz Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- drivers/mfd/Kconfig | 4 + drivers/mfd/Makefile | 1 + drivers/mfd/davinci_voicecodec.c | 189 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 194 insertions(+) create mode 100644 drivers/mfd/davinci_voicecodec.c (limited to 'drivers') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 951fa9b93fbe..20e322912a59 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -53,6 +53,10 @@ config MFD_SH_MOBILE_SDHI This driver supports the SDHI hardware block found in many SuperH Mobile SoCs. +config MFD_DAVINCI_VOICECODEC + tristate + select MFD_CORE + config MFD_DM355EVM_MSP bool "DaVinci DM355 EVM microcontroller" depends on I2C && MACH_DAVINCI_DM355_EVM diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 22715add99a7..4fbf8f89a49b 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o +obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o obj-$(CONFIG_MFD_T7L66XB) += t7l66xb.o tmio_core.o diff --git a/drivers/mfd/davinci_voicecodec.c b/drivers/mfd/davinci_voicecodec.c new file mode 100644 index 000000000000..9886aa8de250 --- /dev/null +++ b/drivers/mfd/davinci_voicecodec.c @@ -0,0 +1,189 @@ +/* + * DaVinci Voice Codec Core Interface for TI platforms + * + * Copyright (C) 2010 Texas Instruments, Inc + * + * Author: Miguel Aguilar + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include + +u32 davinci_vc_read(struct davinci_vc *davinci_vc, int reg) +{ + return __raw_readl(davinci_vc->base + reg); +} + +void davinci_vc_write(struct davinci_vc *davinci_vc, + int reg, u32 val) +{ + __raw_writel(val, davinci_vc->base + reg); +} + +static int __init davinci_vc_probe(struct platform_device *pdev) +{ + struct davinci_vc *davinci_vc; + struct resource *res, *mem; + struct mfd_cell *cell = NULL; + int ret; + + davinci_vc = kzalloc(sizeof(struct davinci_vc), GFP_KERNEL); + if (!davinci_vc) { + dev_dbg(&pdev->dev, + "could not allocate memory for private data\n"); + return -ENOMEM; + } + + davinci_vc->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(davinci_vc->clk)) { + dev_dbg(&pdev->dev, + "could not get the clock for voice codec\n"); + ret = -ENODEV; + goto fail1; + } + clk_enable(davinci_vc->clk); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "no mem resource\n"); + ret = -ENODEV; + goto fail2; + } + + davinci_vc->pbase = res->start; + davinci_vc->base_size = resource_size(res); + + mem = request_mem_region(davinci_vc->pbase, davinci_vc->base_size, + pdev->name); + if (!mem) { + dev_err(&pdev->dev, "VCIF region already claimed\n"); + ret = -EBUSY; + goto fail2; + } + + davinci_vc->base = ioremap(davinci_vc->pbase, davinci_vc->base_size); + if (!davinci_vc->base) { + dev_err(&pdev->dev, "can't ioremap mem resource.\n"); + ret = -ENOMEM; + goto fail3; + } + + res = platform_get_resource(pdev, IORESOURCE_DMA, 0); + if (!res) { + dev_err(&pdev->dev, "no DMA resource\n"); + return -ENXIO; + } + + davinci_vc->davinci_vcif.dma_tx_channel = res->start; + davinci_vc->davinci_vcif.dma_tx_addr = + (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO); + + res = platform_get_resource(pdev, IORESOURCE_DMA, 1); + if (!res) { + dev_err(&pdev->dev, "no DMA resource\n"); + return -ENXIO; + } + + davinci_vc->davinci_vcif.dma_rx_channel = res->start; + davinci_vc->davinci_vcif.dma_rx_addr = + (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_RFIFO); + + davinci_vc->dev = &pdev->dev; + davinci_vc->pdev = pdev; + + /* Voice codec interface client */ + cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL]; + cell->name = "davinci_vcif"; + cell->driver_data = davinci_vc; + + /* Voice codec CQ93VC client */ + cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL]; + cell->name = "cq93vc"; + cell->driver_data = davinci_vc; + + ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells, + DAVINCI_VC_CELLS, NULL, 0); + if (ret != 0) { + dev_err(&pdev->dev, "fail to register client devices\n"); + goto fail4; + } + + return 0; + +fail4: + iounmap(davinci_vc->base); +fail3: + release_mem_region(davinci_vc->pbase, davinci_vc->base_size); +fail2: + clk_disable(davinci_vc->clk); + clk_put(davinci_vc->clk); + davinci_vc->clk = NULL; +fail1: + kfree(davinci_vc); + + return ret; +} + +static int __devexit davinci_vc_remove(struct platform_device *pdev) +{ + struct davinci_vc *davinci_vc = platform_get_drvdata(pdev); + + mfd_remove_devices(&pdev->dev); + + iounmap(davinci_vc->base); + release_mem_region(davinci_vc->pbase, davinci_vc->base_size); + + clk_disable(davinci_vc->clk); + clk_put(davinci_vc->clk); + davinci_vc->clk = NULL; + + kfree(davinci_vc); + + return 0; +} + +static struct platform_driver davinci_vc_driver = { + .driver = { + .name = "davinci_voicecodec", + .owner = THIS_MODULE, + }, + .remove = __devexit_p(davinci_vc_remove), +}; + +static int __init davinci_vc_init(void) +{ + return platform_driver_probe(&davinci_vc_driver, davinci_vc_probe); +} +module_init(davinci_vc_init); + +static void __exit davinci_vc_exit(void) +{ + platform_driver_unregister(&davinci_vc_driver); +} +module_exit(davinci_vc_exit); + +MODULE_AUTHOR("Miguel Aguilar"); +MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 6a1c7b7e2ea3ca5f6ae73154c4b72755d262c9e0 Mon Sep 17 00:00:00 2001 From: "Olaya, Margarita" Date: Wed, 17 Mar 2010 17:42:29 -0500 Subject: OMAP4: PMIC: Rename twl6030_codec as twl6040_codec Correction for chips: twl6030 is Phoenix Power chip twl6040 is Phoenix Audio chip Signed-off-by: Margarita Olaya Cabrera Acked-by: Liam Girdwood Acked-by: Samuel Ortiz Signed-off-by: Mark Brown --- drivers/mfd/twl-core.c | 4 ++-- include/linux/i2c/twl.h | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c index 562cd4935e17..720e099e506d 100644 --- a/drivers/mfd/twl-core.c +++ b/drivers/mfd/twl-core.c @@ -109,7 +109,7 @@ #endif #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\ - defined(CONFIG_SND_SOC_TWL6030) || defined(CONFIG_SND_SOC_TWL6030_MODULE) + defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE) #define twl_has_codec() true #else #define twl_has_codec() false @@ -708,7 +708,7 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features) /* Phoenix*/ if (twl_has_codec() && pdata->codec && twl_class_is_6030()) { sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; - child = add_child(sub_chip_id, "twl6030_codec", + child = add_child(sub_chip_id, "twl6040_codec", pdata->codec, sizeof(*pdata->codec), false, 0, 0); if (IS_ERR(child)) diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index fb6784e86d5f..ebd90ce58ca2 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -569,9 +569,9 @@ struct twl4030_codec_data { struct twl4030_codec_audio_data *audio; struct twl4030_codec_vibra_data *vibra; - /* twl6030 */ - int audpwron_gpio; /* audio power-on gpio */ - int naudint_irq; /* audio interrupt */ + /* twl6040 */ + int audpwron_gpio; /* audio power-on gpio */ + int naudint_irq; /* audio interrupt */ }; struct twl4030_platform_data { -- cgit v1.2.3 From 8c0d8fa26ba5ec1f69e88044c671dab58c51e0e1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 30 Mar 2010 02:52:40 +0900 Subject: mfd: update gfp/slab.h includes Implicit slab.h inclusion via percpu.h is about to go away. Make sure gfp.h or slab.h is included as necessary. Signed-off-by: Tejun Heo Acked-by: Samuel Ortiz Signed-off-by: Mark Brown --- drivers/mfd/davinci_voicecodec.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mfd/davinci_voicecodec.c b/drivers/mfd/davinci_voicecodec.c index 9886aa8de250..3e75f02e4778 100644 --- a/drivers/mfd/davinci_voicecodec.c +++ b/drivers/mfd/davinci_voicecodec.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include -- cgit v1.2.3 From c9fbf7e070bbf9cc7adc1420df87706c62cb04ed Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 26 Mar 2010 16:49:15 +0000 Subject: mfd: Add WM8994 interrupt controller support The WM8994 has an interrupt controller which supports interrupts for both CODEC and GPIO portions of the chip. Support this using genirq, while allowing for systems that do not have an interrupt hooked up. Wrapper functions are provided for the IRQ request and free to simplify the code in consumer drivers when handling cases where IRQs are not set up. Signed-off-by: Mark Brown Acked-by: Samuel Ortiz --- drivers/mfd/Kconfig | 4 +- drivers/mfd/Makefile | 2 +- drivers/mfd/wm8994-core.c | 43 +++++- drivers/mfd/wm8994-irq.c | 310 +++++++++++++++++++++++++++++++++++++++ include/linux/mfd/wm8994/core.h | 53 ++++++- include/linux/mfd/wm8994/pdata.h | 1 + 6 files changed, 406 insertions(+), 7 deletions(-) create mode 100644 drivers/mfd/wm8994-irq.c (limited to 'drivers') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b2073e0266f5..de3e74cde51c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -301,9 +301,9 @@ config MFD_WM8350_I2C selected to enable support for the functionality of the chip. config MFD_WM8994 - tristate "Support Wolfson Microelectronics WM8994" + bool "Support Wolfson Microelectronics WM8994" select MFD_CORE - depends on I2C + depends on I2C=y && GENERIC_HARDIRQS help The WM8994 is a highly integrated hi-fi CODEC designed for smartphone applicatiosn. As well as audio functionality it diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 4fbf8f89a49b..87935f967aa0 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -26,7 +26,7 @@ wm8350-objs := wm8350-core.o wm8350-regmap.o wm8350-gpio.o wm8350-objs += wm8350-irq.o obj-$(CONFIG_MFD_WM8350) += wm8350.o obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o -obj-$(CONFIG_MFD_WM8994) += wm8994-core.o +obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o obj-$(CONFIG_TPS65010) += tps65010.o obj-$(CONFIG_MENELAUS) += menelaus.o diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index 844e1c1b7d90..39cde82afb48 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -172,9 +172,34 @@ static struct mfd_cell wm8994_regulator_devs[] = { { .name = "wm8994-ldo", .id = 2 }, }; +static struct resource wm8994_codec_resources[] = { + { + .start = WM8994_IRQ_TEMP_SHUT, + .end = WM8994_IRQ_TEMP_WARN, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource wm8994_gpio_resources[] = { + { + .start = WM8994_IRQ_GPIO(1), + .end = WM8994_IRQ_GPIO(11), + .flags = IORESOURCE_IRQ, + }, +}; + static struct mfd_cell wm8994_devs[] = { - { .name = "wm8994-codec" }, - { .name = "wm8994-gpio" }, + { + .name = "wm8994-codec", + .num_resources = ARRAY_SIZE(wm8994_codec_resources), + .resources = wm8994_codec_resources, + }, + + { + .name = "wm8994-gpio", + .num_resources = ARRAY_SIZE(wm8994_gpio_resources), + .resources = wm8994_gpio_resources, + }, }; /* @@ -235,6 +260,11 @@ static int wm8994_device_resume(struct device *dev) return ret; } + ret = wm8994_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK, + WM8994_NUM_IRQ_REGS * 2, &wm8994->irq_masks_cur); + if (ret < 0) + dev_err(dev, "Failed to restore interrupt masks: %d\n", ret); + ret = wm8994_write(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2, &wm8994->ldo_regs); if (ret < 0) @@ -347,6 +377,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, unsigned long id, int irq) if (pdata) { + wm8994->irq_base = pdata->irq_base; wm8994->gpio_base = pdata->gpio_base; /* GPIO configuration is only applied if it's non-zero */ @@ -374,16 +405,20 @@ static int wm8994_device_init(struct wm8994 *wm8994, unsigned long id, int irq) WM8994_LDO1_DISCH, 0); } + wm8994_irq_init(wm8994); + ret = mfd_add_devices(wm8994->dev, -1, wm8994_devs, ARRAY_SIZE(wm8994_devs), NULL, 0); if (ret != 0) { dev_err(wm8994->dev, "Failed to add children: %d\n", ret); - goto err_enable; + goto err_irq; } return 0; +err_irq: + wm8994_irq_exit(wm8994); err_enable: regulator_bulk_disable(ARRAY_SIZE(wm8994_main_supplies), wm8994->supplies); @@ -400,6 +435,7 @@ err: static void wm8994_device_exit(struct wm8994 *wm8994) { mfd_remove_devices(wm8994->dev); + wm8994_irq_exit(wm8994); regulator_bulk_disable(ARRAY_SIZE(wm8994_main_supplies), wm8994->supplies); regulator_bulk_free(ARRAY_SIZE(wm8994_main_supplies), wm8994->supplies); @@ -468,6 +504,7 @@ static int wm8994_i2c_probe(struct i2c_client *i2c, wm8994->control_data = i2c; wm8994->read_dev = wm8994_i2c_read_device; wm8994->write_dev = wm8994_i2c_write_device; + wm8994->irq = i2c->irq; return wm8994_device_init(wm8994, id->driver_data, i2c->irq); } diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c new file mode 100644 index 000000000000..8400eb1ee5db --- /dev/null +++ b/drivers/mfd/wm8994-irq.c @@ -0,0 +1,310 @@ +/* + * wm8994-irq.c -- Interrupt controller support for Wolfson WM8994 + * + * Copyright 2010 Wolfson Microelectronics PLC. + * + * Author: Mark Brown + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +struct wm8994_irq_data { + int reg; + int mask; +}; + +static struct wm8994_irq_data wm8994_irqs[] = { + [WM8994_IRQ_TEMP_SHUT] = { + .reg = 2, + .mask = WM8994_TEMP_SHUT_EINT, + }, + [WM8994_IRQ_MIC1_DET] = { + .reg = 2, + .mask = WM8994_MIC1_DET_EINT, + }, + [WM8994_IRQ_MIC1_SHRT] = { + .reg = 2, + .mask = WM8994_MIC1_SHRT_EINT, + }, + [WM8994_IRQ_MIC2_DET] = { + .reg = 2, + .mask = WM8994_MIC2_DET_EINT, + }, + [WM8994_IRQ_MIC2_SHRT] = { + .reg = 2, + .mask = WM8994_MIC2_SHRT_EINT, + }, + [WM8994_IRQ_FLL1_LOCK] = { + .reg = 2, + .mask = WM8994_FLL1_LOCK_EINT, + }, + [WM8994_IRQ_FLL2_LOCK] = { + .reg = 2, + .mask = WM8994_FLL2_LOCK_EINT, + }, + [WM8994_IRQ_SRC1_LOCK] = { + .reg = 2, + .mask = WM8994_SRC1_LOCK_EINT, + }, + [WM8994_IRQ_SRC2_LOCK] = { + .reg = 2, + .mask = WM8994_SRC2_LOCK_EINT, + }, + [WM8994_IRQ_AIF1DRC1_SIG_DET] = { + .reg = 2, + .mask = WM8994_AIF1DRC1_SIG_DET, + }, + [WM8994_IRQ_AIF1DRC2_SIG_DET] = { + .reg = 2, + .mask = WM8994_AIF1DRC2_SIG_DET_EINT, + }, + [WM8994_IRQ_AIF2DRC_SIG_DET] = { + .reg = 2, + .mask = WM8994_AIF2DRC_SIG_DET_EINT, + }, + [WM8994_IRQ_FIFOS_ERR] = { + .reg = 2, + .mask = WM8994_FIFOS_ERR_EINT, + }, + [WM8994_IRQ_WSEQ_DONE] = { + .reg = 2, + .mask = WM8994_WSEQ_DONE_EINT, + }, + [WM8994_IRQ_DCS_DONE] = { + .reg = 2, + .mask = WM8994_DCS_DONE_EINT, + }, + [WM8994_IRQ_TEMP_WARN] = { + .reg = 2, + .mask = WM8994_TEMP_WARN_EINT, + }, + [WM8994_IRQ_GPIO(1)] = { + .reg = 1, + .mask = WM8994_GP1_EINT, + }, + [WM8994_IRQ_GPIO(2)] = { + .reg = 1, + .mask = WM8994_GP2_EINT, + }, + [WM8994_IRQ_GPIO(3)] = { + .reg = 1, + .mask = WM8994_GP3_EINT, + }, + [WM8994_IRQ_GPIO(4)] = { + .reg = 1, + .mask = WM8994_GP4_EINT, + }, + [WM8994_IRQ_GPIO(5)] = { + .reg = 1, + .mask = WM8994_GP5_EINT, + }, + [WM8994_IRQ_GPIO(6)] = { + .reg = 1, + .mask = WM8994_GP6_EINT, + }, + [WM8994_IRQ_GPIO(7)] = { + .reg = 1, + .mask = WM8994_GP7_EINT, + }, + [WM8994_IRQ_GPIO(8)] = { + .reg = 1, + .mask = WM8994_GP8_EINT, + }, + [WM8994_IRQ_GPIO(9)] = { + .reg = 1, + .mask = WM8994_GP8_EINT, + }, + [WM8994_IRQ_GPIO(10)] = { + .reg = 1, + .mask = WM8994_GP10_EINT, + }, + [WM8994_IRQ_GPIO(11)] = { + .reg = 1, + .mask = WM8994_GP11_EINT, + }, +}; + +static inline int irq_data_to_status_reg(struct wm8994_irq_data *irq_data) +{ + return WM8994_INTERRUPT_STATUS_1 - 1 + irq_data->reg; +} + +static inline int irq_data_to_mask_reg(struct wm8994_irq_data *irq_data) +{ + return WM8994_INTERRUPT_STATUS_1_MASK - 1 + irq_data->reg; +} + +static inline struct wm8994_irq_data *irq_to_wm8994_irq(struct wm8994 *wm8994, + int irq) +{ + return &wm8994_irqs[irq - wm8994->irq_base]; +} + +static void wm8994_irq_lock(unsigned int irq) +{ + struct wm8994 *wm8994 = get_irq_chip_data(irq); + + mutex_lock(&wm8994->irq_lock); +} + +static void wm8994_irq_sync_unlock(unsigned int irq) +{ + struct wm8994 *wm8994 = get_irq_chip_data(irq); + int i; + + for (i = 0; i < ARRAY_SIZE(wm8994->irq_masks_cur); i++) { + /* If there's been a change in the mask write it back + * to the hardware. */ + if (wm8994->irq_masks_cur[i] != wm8994->irq_masks_cache[i]) { + wm8994->irq_masks_cache[i] = wm8994->irq_masks_cur[i]; + wm8994_reg_write(wm8994, + WM8994_INTERRUPT_STATUS_1_MASK + i, + wm8994->irq_masks_cur[i]); + } + } + + mutex_unlock(&wm8994->irq_lock); +} + +static void wm8994_irq_unmask(unsigned int irq) +{ + struct wm8994 *wm8994 = get_irq_chip_data(irq); + struct wm8994_irq_data *irq_data = irq_to_wm8994_irq(wm8994, irq); + + wm8994->irq_masks_cur[irq_data->reg - 1] &= ~irq_data->mask; +} + +static void wm8994_irq_mask(unsigned int irq) +{ + struct wm8994 *wm8994 = get_irq_chip_data(irq); + struct wm8994_irq_data *irq_data = irq_to_wm8994_irq(wm8994, irq); + + wm8994->irq_masks_cur[irq_data->reg - 1] |= irq_data->mask; +} + +static struct irq_chip wm8994_irq_chip = { + .name = "wm8994", + .bus_lock = wm8994_irq_lock, + .bus_sync_unlock = wm8994_irq_sync_unlock, + .mask = wm8994_irq_mask, + .unmask = wm8994_irq_unmask, +}; + +/* The processing of the primary interrupt occurs in a thread so that + * we can interact with the device over I2C or SPI. */ +static irqreturn_t wm8994_irq_thread(int irq, void *data) +{ + struct wm8994 *wm8994 = data; + unsigned int i; + u16 status[WM8994_NUM_IRQ_REGS]; + int ret; + + ret = wm8994_bulk_read(wm8994, WM8994_INTERRUPT_STATUS_1, + WM8994_NUM_IRQ_REGS, status); + if (ret < 0) { + dev_err(wm8994->dev, "Failed to read interrupt status: %d\n", + ret); + return IRQ_NONE; + } + + /* Apply masking */ + for (i = 0; i < WM8994_NUM_IRQ_REGS; i++) + status[i] &= ~wm8994->irq_masks_cur[i]; + + /* Report */ + for (i = 0; i < ARRAY_SIZE(wm8994_irqs); i++) { + if (status[wm8994_irqs[i].reg - 1] & wm8994_irqs[i].mask) + handle_nested_irq(wm8994->irq_base + i); + } + + /* Ack any unmasked IRQs */ + for (i = 0; i < ARRAY_SIZE(status); i++) { + if (status[i]) + wm8994_reg_write(wm8994, WM8994_INTERRUPT_STATUS_1 + i, + status[i]); + } + + return IRQ_HANDLED; +} + +int wm8994_irq_init(struct wm8994 *wm8994) +{ + int i, cur_irq, ret; + + mutex_init(&wm8994->irq_lock); + + /* Mask the individual interrupt sources */ + for (i = 0; i < ARRAY_SIZE(wm8994->irq_masks_cur); i++) { + wm8994->irq_masks_cur[i] = 0xffff; + wm8994->irq_masks_cache[i] = 0xffff; + wm8994_reg_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK + i, + 0xffff); + } + + if (!wm8994->irq) { + dev_warn(wm8994->dev, + "No interrupt specified, no interrupts\n"); + wm8994->irq_base = 0; + return 0; + } + + if (!wm8994->irq_base) { + dev_err(wm8994->dev, + "No interrupt base specified, no interrupts\n"); + return 0; + } + + /* Register them with genirq */ + for (cur_irq = wm8994->irq_base; + cur_irq < ARRAY_SIZE(wm8994_irqs) + wm8994->irq_base; + cur_irq++) { + set_irq_chip_data(cur_irq, wm8994); + set_irq_chip_and_handler(cur_irq, &wm8994_irq_chip, + handle_edge_irq); + set_irq_nested_thread(cur_irq, 1); + + /* ARM needs us to explicitly flag the IRQ as valid + * and will set them noprobe when we do so. */ +#ifdef CONFIG_ARM + set_irq_flags(cur_irq, IRQF_VALID); +#else + set_irq_noprobe(cur_irq); +#endif + } + + ret = request_threaded_irq(wm8994->irq, NULL, wm8994_irq_thread, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "wm8994", wm8994); + if (ret != 0) { + dev_err(wm8994->dev, "Failed to request IRQ %d: %d\n", + wm8994->irq, ret); + return ret; + } + + /* Enable top level interrupt if it was masked */ + wm8994_reg_write(wm8994, WM8994_INTERRUPT_CONTROL, 0); + + return 0; +} + +void wm8994_irq_exit(struct wm8994 *wm8994) +{ + if (wm8994->irq) + free_irq(wm8994->irq, wm8994); +} diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index b06ff2846748..de79baee4925 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -15,14 +15,38 @@ #ifndef __MFD_WM8994_CORE_H__ #define __MFD_WM8994_CORE_H__ +#include + struct regulator_dev; struct regulator_bulk_data; #define WM8994_NUM_GPIO_REGS 11 -#define WM8994_NUM_LDO_REGS 2 +#define WM8994_NUM_LDO_REGS 2 +#define WM8994_NUM_IRQ_REGS 2 + +#define WM8994_IRQ_TEMP_SHUT 0 +#define WM8994_IRQ_MIC1_DET 1 +#define WM8994_IRQ_MIC1_SHRT 2 +#define WM8994_IRQ_MIC2_DET 3 +#define WM8994_IRQ_MIC2_SHRT 4 +#define WM8994_IRQ_FLL1_LOCK 5 +#define WM8994_IRQ_FLL2_LOCK 6 +#define WM8994_IRQ_SRC1_LOCK 7 +#define WM8994_IRQ_SRC2_LOCK 8 +#define WM8994_IRQ_AIF1DRC1_SIG_DET 9 +#define WM8994_IRQ_AIF1DRC2_SIG_DET 10 +#define WM8994_IRQ_AIF2DRC_SIG_DET 11 +#define WM8994_IRQ_FIFOS_ERR 12 +#define WM8994_IRQ_WSEQ_DONE 13 +#define WM8994_IRQ_DCS_DONE 14 +#define WM8994_IRQ_TEMP_WARN 15 + +/* GPIOs in the chip are numbered from 1-11 */ +#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) struct wm8994 { struct mutex io_lock; + struct mutex irq_lock; struct device *dev; int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, @@ -33,6 +57,11 @@ struct wm8994 { void *control_data; int gpio_base; + int irq_base; + + int irq; + u16 irq_masks_cur[WM8994_NUM_IRQ_REGS]; + u16 irq_masks_cache[WM8994_NUM_IRQ_REGS]; /* Used over suspend/resume */ u16 ldo_regs[WM8994_NUM_LDO_REGS]; @@ -51,4 +80,26 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, int count, u16 *buf); + +/* Helper to save on boilerplate */ +static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq, + irq_handler_t handler, const char *name, + void *data) +{ + if (!wm8994->irq_base) + return -EINVAL; + return request_threaded_irq(wm8994->irq_base + irq, NULL, handler, + IRQF_TRIGGER_RISING, name, + data); +} +static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data) +{ + if (!wm8994->irq_base) + return; + free_irq(wm8994->irq_base + irq, data); +} + +int wm8994_irq_init(struct wm8994 *wm8994); +void wm8994_irq_exit(struct wm8994 *wm8994); + #endif diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 70d6a8687dc5..5c51f367c061 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -70,6 +70,7 @@ struct wm8994_pdata { struct wm8994_ldo_pdata ldo[WM8994_NUM_LDO]; + int irq_base; /** Base IRQ number for WM8994, required for IRQs */ int num_drc_cfgs; struct wm8994_drc_cfg *drc_cfgs; -- cgit v1.2.3 From ddf438cf2a6de9aa47783a45907e1188b9437ff7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 2 Apr 2010 14:51:59 +0100 Subject: gpiolib: Implement gpio_to_irq for WM8994 GPIO controller Signed-off-by: Mark Brown --- drivers/gpio/wm8994-gpio.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers') diff --git a/drivers/gpio/wm8994-gpio.c b/drivers/gpio/wm8994-gpio.c index de28b4a470ea..3ee35badcf1d 100644 --- a/drivers/gpio/wm8994-gpio.c +++ b/drivers/gpio/wm8994-gpio.c @@ -80,6 +80,18 @@ static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value) wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, WM8994_GPN_LVL, value); } +static int wm8994_gpio_to_irq(struct gpio_chip *chip, unsigned offset) +{ + struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip); + struct wm8994 *wm8994 = wm8994_gpio->wm8994; + + if (!wm8994->irq_base) + return -EINVAL; + + return wm8994->irq_base + offset; +} + + #ifdef CONFIG_DEBUG_FS static void wm8994_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { -- cgit v1.2.3