* [PATCH 1/3] mfd: add Intel MSIC driver
2011-09-07 13:06 [PATCH 0/3] Intel MSIC MFD driver for Medfield platform Mika Westerberg
@ 2011-09-07 13:06 ` Mika Westerberg
2011-09-20 17:17 ` Samuel Ortiz
2011-09-07 13:06 ` [PATCH 2/3] x86, mrst: Some drivers need to known when an SCU is available Mika Westerberg
` (2 subsequent siblings)
3 siblings, 1 reply; 14+ messages in thread
From: Mika Westerberg @ 2011-09-07 13:06 UTC (permalink / raw)
To: linux-kernel
Cc: alan, sameo, tglx, mingo, hpa, feng.tang, jacob.jun.pan,
Mika Westerberg
Add support for Intel MSIC chip found on Intel Medfield platforms. This
chip embeds several subdevices: audio, ADC, GPIO, power button, etc. The
driver creates platform device for each subdevice.
We also provide an MSIC register access API which should replace the more
generic SCU IPC interface currently used. Existing drivers can choose
whether they convert to this new API or stick with the SCU IPC interface.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/mfd/Kconfig | 9 +
drivers/mfd/Makefile | 1 +
drivers/mfd/intel_msic.c | 501 ++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/intel_msic.h | 456 ++++++++++++++++++++++++++++++++++++
4 files changed, 967 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/intel_msic.c
create mode 100644 include/linux/mfd/intel_msic.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 21574bd..3f02265 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -770,6 +770,15 @@ config MFD_AAT2870_CORE
additional drivers must be enabled in order to use the
functionality of the device.
+config MFD_INTEL_MSIC
+ bool "Support for Intel MSIC"
+ depends on INTEL_SCU_IPC
+ select MFD_CORE
+ help
+ Select this option to enable access to Intel MSIC (Avatele
+ Passage) chip. This chip embeds audio, battery, GPIO, etc.
+ devices used in Intel Medfield platforms.
+
endif # MFD_SUPPORT
menu "Multimedia Capabilities Port drivers"
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index c580203..7d53a7c 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -102,3 +102,4 @@ obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o
obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o
+obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o
diff --git a/drivers/mfd/intel_msic.c b/drivers/mfd/intel_msic.c
new file mode 100644
index 0000000..bd086b9
--- /dev/null
+++ b/drivers/mfd/intel_msic.c
@@ -0,0 +1,501 @@
+/*
+ * Driver for Intel MSIC
+ *
+ * Copyright (C) 2011, Intel Corporation
+ * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * 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/gpio.h>
+#include <linux/module.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/intel_msic.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <asm/intel_scu_ipc.h>
+
+#define MSIC_VENDOR(id) ((id >> 6) & 3)
+#define MSIC_VERSION(id) (id & 0x3f)
+#define MSIC_MAJOR(id) ('A' + ((id >> 3) & 7))
+#define MSIC_MINOR(id) (id & 7)
+
+/*
+ * MSIC interrupt tree is readable from SRAM at INTEL_MSIC_IRQ_PHYS_BASE.
+ * Since IRQ block starts from address 0x002 we need to substract that from
+ * the actual IRQ status register address.
+ */
+#define MSIC_IRQ_STATUS(x) (INTEL_MSIC_IRQ_PHYS_BASE + ((x) - 2))
+#define MSIC_IRQ_STATUS_ACCDET MSIC_IRQ_STATUS(INTEL_MSIC_ACCDET)
+
+/*
+ * The SCU hardware has limitation of 16 bytes per read/write buffer on
+ * Medfield.
+ */
+#define SCU_IPC_RWBUF_LIMIT 16
+
+/**
+ * struct intel_msic - an MSIC MFD instance
+ * @pdev: pointer to the platform device
+ * @vendor: vendor ID
+ * @version: chip version
+ * @irq_base: base address of the mapped MSIC SRAM interrupt tree
+ */
+struct intel_msic {
+ struct platform_device *pdev;
+ unsigned vendor;
+ unsigned version;
+ void __iomem *irq_base;
+};
+
+static struct resource msic_touch_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_adc_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_battery_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_gpio_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_audio_resources[] = {
+ {
+ .name = "IRQ",
+ .flags = IORESOURCE_IRQ,
+ },
+ /*
+ * We will pass IRQ_BASE to the driver now but this can be removed
+ * when/if the driver starts to use intel_msic_irq_read().
+ */
+ {
+ .name = "IRQ_BASE",
+ .flags = IORESOURCE_MEM,
+ .start = MSIC_IRQ_STATUS_ACCDET,
+ .end = MSIC_IRQ_STATUS_ACCDET,
+ },
+};
+
+static struct resource msic_hdmi_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_thermal_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_power_btn_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource msic_ocd_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+/*
+ * Devices that are part of the MSIC and are available via firmware
+ * populated SFI DEVS table.
+ */
+static struct mfd_cell msic_devs[] = {
+ [INTEL_MSIC_BLOCK_TOUCH] = {
+ .name = "msic_touch",
+ .num_resources = ARRAY_SIZE(msic_touch_resources),
+ .resources = msic_touch_resources,
+ },
+ [INTEL_MSIC_BLOCK_ADC] = {
+ .name = "msic_adc",
+ .num_resources = ARRAY_SIZE(msic_adc_resources),
+ .resources = msic_adc_resources,
+ },
+ [INTEL_MSIC_BLOCK_BATTERY] = {
+ .name = "msic_battery",
+ .num_resources = ARRAY_SIZE(msic_battery_resources),
+ .resources = msic_battery_resources,
+ },
+ [INTEL_MSIC_BLOCK_GPIO] = {
+ .name = "msic_gpio",
+ .num_resources = ARRAY_SIZE(msic_gpio_resources),
+ .resources = msic_gpio_resources,
+ },
+ [INTEL_MSIC_BLOCK_AUDIO] = {
+ .name = "msic_audio",
+ .num_resources = ARRAY_SIZE(msic_audio_resources),
+ .resources = msic_audio_resources,
+ },
+ [INTEL_MSIC_BLOCK_HDMI] = {
+ .name = "msic_hdmi",
+ .num_resources = ARRAY_SIZE(msic_hdmi_resources),
+ .resources = msic_hdmi_resources,
+ },
+ [INTEL_MSIC_BLOCK_THERMAL] = {
+ .name = "msic_thermal",
+ .num_resources = ARRAY_SIZE(msic_thermal_resources),
+ .resources = msic_thermal_resources,
+ },
+ [INTEL_MSIC_BLOCK_POWER_BTN] = {
+ .name = "msic_power_btn",
+ .num_resources = ARRAY_SIZE(msic_power_btn_resources),
+ .resources = msic_power_btn_resources,
+ },
+ [INTEL_MSIC_BLOCK_OCD] = {
+ .name = "msic_ocd",
+ .num_resources = ARRAY_SIZE(msic_ocd_resources),
+ .resources = msic_ocd_resources,
+ },
+};
+
+/*
+ * Other MSIC related devices which are not directly available via SFI DEVS
+ * table. These can be pseudo devices, regulators etc. which are needed for
+ * different purposes.
+ *
+ * These devices appear only after the MSIC driver itself is initialized so
+ * we can guarantee that the SCU IPC interface is ready.
+ */
+static struct mfd_cell msic_other_devs[] = {
+ /* Audio codec in the MSIC */
+ {
+ .id = -1,
+ .name = "sn95031",
+ },
+};
+
+/**
+ * intel_msic_reg_read - read a single MSIC register
+ * @reg: register to read
+ * @val: register value is placed here
+ *
+ * Read a single register from MSIC. Returns %0 on success and negative
+ * errno in case of failure.
+ *
+ * Function may sleep.
+ */
+int intel_msic_reg_read(unsigned short reg, u8 *val)
+{
+ return intel_scu_ipc_ioread8(reg, val);
+}
+EXPORT_SYMBOL_GPL(intel_msic_reg_read);
+
+/**
+ * intel_msic_reg_write - write a single MSIC register
+ * @reg: register to write
+ * @val: value to write to that register
+ *
+ * Write a single MSIC register. Returns 0 on success and negative
+ * errno in case of failure.
+ *
+ * Function may sleep.
+ */
+int intel_msic_reg_write(unsigned short reg, u8 val)
+{
+ return intel_scu_ipc_iowrite8(reg, val);
+}
+EXPORT_SYMBOL_GPL(intel_msic_reg_write);
+
+/**
+ * intel_msic_reg_update - update a single MSIC register
+ * @reg: register to update
+ * @val: value to write to the register
+ * @mask: specifies which of the bits are updated (%0 = don't update,
+ * %1 = update)
+ *
+ * Perform an update to a register @reg. @mask is used to specify which
+ * bits are updated. Returns %0 in case of success and negative errno in
+ * case of failure.
+ *
+ * Function may sleep.
+ */
+int intel_msic_reg_update(unsigned short reg, u8 val, u8 mask)
+{
+ return intel_scu_ipc_update_register(reg, val, mask);
+}
+EXPORT_SYMBOL_GPL(intel_msic_reg_update);
+
+/**
+ * intel_msic_bulk_read - read an array of registers
+ * @reg: array of register addresses to read
+ * @buf: array where the read values are placed
+ * @count: number of registers to read
+ *
+ * Function reads @count registers from the MSIC using addresses passed in
+ * @reg. Read values are placed in @buf. Reads are performed atomically
+ * wrt. MSIC.
+ *
+ * Returns %0 in case of success and negative errno in case of failure.
+ *
+ * Function may sleep.
+ */
+int intel_msic_bulk_read(unsigned short *reg, u8 *buf, size_t count)
+{
+ if (WARN_ON(count > SCU_IPC_RWBUF_LIMIT))
+ return -EINVAL;
+
+ return intel_scu_ipc_readv(reg, buf, count);
+}
+EXPORT_SYMBOL_GPL(intel_msic_bulk_read);
+
+/**
+ * intel_msic_bulk_write - write an array of values to the MSIC registers
+ * @reg: array of registers to write
+ * @buf: values to write to each register
+ * @count: number of registers to write
+ *
+ * Function writes @count registers in @buf to MSIC. Writes are performed
+ * atomically wrt MSIC. Returns %0 in case of success and negative errno in
+ * case of failure.
+ *
+ * Function may sleep.
+ */
+int intel_msic_bulk_write(unsigned short *reg, u8 *buf, size_t count)
+{
+ if (WARN_ON(count > SCU_IPC_RWBUF_LIMIT))
+ return -EINVAL;
+
+ return intel_scu_ipc_writev(reg, buf, count);
+}
+EXPORT_SYMBOL_GPL(intel_msic_bulk_write);
+
+/**
+ * intel_msic_irq_read - read a register from an MSIC interrupt tree
+ * @msic: MSIC instance
+ * @reg: interrupt register (between %INTEL_MSIC_IRQLVL1 and
+ * %INTEL_MSIC_RESETIRQ2)
+ * @val: value of the register is placed here
+ *
+ * This function can be used by an MSIC subdevice interrupt handler to read
+ * a register value from the MSIC interrupt tree. In this way subdevice
+ * drivers don't have to map in the interrupt tree themselves but can just
+ * call this function instead.
+ *
+ * Function doesn't sleep and is callable from interrupt context.
+ *
+ * Returns %-EINVAL if @reg is outside of the allowed register region.
+ */
+int intel_msic_irq_read(struct intel_msic *msic, unsigned short reg, u8 *val)
+{
+ if (WARN_ON(reg < INTEL_MSIC_IRQLVL1 || reg > INTEL_MSIC_RESETIRQ2))
+ return -EINVAL;
+
+ *val = readb(msic->irq_base + (reg - INTEL_MSIC_IRQLVL1));
+ return 0;
+}
+EXPORT_SYMBOL_GPL(intel_msic_irq_read);
+
+static int __devinit intel_msic_init_devices(struct intel_msic *msic)
+{
+ struct platform_device *pdev = msic->pdev;
+ struct intel_msic_platform_data *pdata = pdev->dev.platform_data;
+ int ret, i;
+
+ if (pdata->gpio) {
+ struct mfd_cell *cell = &msic_devs[INTEL_MSIC_BLOCK_GPIO];
+
+ cell->platform_data = pdata->gpio;
+ cell->pdata_size = sizeof(*pdata->gpio);
+ }
+
+ if (pdata->ocd) {
+ unsigned gpio = pdata->ocd->gpio;
+
+ ret = gpio_request_one(gpio, GPIOF_IN, "ocd_gpio");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register OCD GPIO\n");
+ return ret;
+ }
+
+ ret = gpio_to_irq(gpio);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no IRQ number for OCD GPIO\n");
+ gpio_free(gpio);
+ return ret;
+ }
+
+ /* Update the IRQ number for the OCD */
+ pdata->irq[INTEL_MSIC_BLOCK_OCD] = ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(msic_devs); i++) {
+ if (!pdata->irq[i])
+ continue;
+
+ ret = mfd_add_devices(&pdev->dev, -1, &msic_devs[i], 1, NULL,
+ pdata->irq[i]);
+ if (ret)
+ goto fail;
+ }
+
+ ret = mfd_add_devices(&pdev->dev, 0, msic_other_devs,
+ ARRAY_SIZE(msic_other_devs), NULL, 0);
+ if (ret)
+ goto fail;
+
+ return 0;
+
+fail:
+ mfd_remove_devices(&pdev->dev);
+ if (pdata->ocd)
+ gpio_free(pdata->ocd->gpio);
+
+ return ret;
+}
+
+static void __devexit intel_msic_remove_devices(struct intel_msic *msic)
+{
+ struct platform_device *pdev = msic->pdev;
+ struct intel_msic_platform_data *pdata = pdev->dev.platform_data;
+
+ mfd_remove_devices(&pdev->dev);
+
+ if (pdata->ocd)
+ gpio_free(pdata->ocd->gpio);
+}
+
+static int __devinit intel_msic_probe(struct platform_device *pdev)
+{
+ struct intel_msic_platform_data *pdata = pdev->dev.platform_data;
+ struct intel_msic *msic;
+ struct resource *res;
+ u8 id0, id1;
+ int ret;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data passed\n");
+ return -EINVAL;
+ }
+
+ /* First validate that we have an MSIC in place */
+ ret = intel_scu_ipc_ioread8(INTEL_MSIC_ID0, &id0);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to identify the MSIC chip (ID0)\n");
+ return -ENXIO;
+ }
+
+ ret = intel_scu_ipc_ioread8(INTEL_MSIC_ID1, &id1);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to identify the MSIC chip (ID1)\n");
+ return -ENXIO;
+ }
+
+ if (MSIC_VENDOR(id0) != MSIC_VENDOR(id1)) {
+ dev_err(&pdev->dev, "invalid vendor ID: %x, %x\n", id0, id1);
+ return -ENXIO;
+ }
+
+ msic = kzalloc(sizeof(*msic), GFP_KERNEL);
+ if (!msic)
+ return -ENOMEM;
+
+ msic->vendor = MSIC_VENDOR(id0);
+ msic->version = MSIC_VERSION(id0);
+ msic->pdev = pdev;
+
+ /*
+ * Map in the MSIC interrupt tree area in SRAM. This is exposed to
+ * the clients via intel_msic_irq_read().
+ */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "failed to get SRAM iomem resource\n");
+ ret = -ENODEV;
+ goto fail_free_msic;
+ }
+
+ res = request_mem_region(res->start, resource_size(res), pdev->name);
+ if (!res) {
+ ret = -EBUSY;
+ goto fail_free_msic;
+ }
+
+ msic->irq_base = ioremap_nocache(res->start, resource_size(res));
+ if (!msic->irq_base) {
+ dev_err(&pdev->dev, "failed to map SRAM memory\n");
+ ret = -ENOMEM;
+ goto fail_release_region;
+ }
+
+ platform_set_drvdata(pdev, msic);
+
+ ret = intel_msic_init_devices(msic);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize MSIC devices\n");
+ goto fail_unmap_mem;
+ }
+
+ dev_info(&pdev->dev, "Intel MSIC version %c%d (vendor %#x)\n",
+ MSIC_MAJOR(msic->version), MSIC_MINOR(msic->version),
+ msic->vendor);
+
+ return 0;
+
+fail_unmap_mem:
+ iounmap(msic->irq_base);
+fail_release_region:
+ release_mem_region(res->start, resource_size(res));
+fail_free_msic:
+ kfree(msic);
+
+ return ret;
+}
+
+static int __devexit intel_msic_remove(struct platform_device *pdev)
+{
+ struct intel_msic *msic = platform_get_drvdata(pdev);
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ intel_msic_remove_devices(msic);
+ platform_set_drvdata(pdev, NULL);
+ iounmap(msic->irq_base);
+ release_mem_region(res->start, resource_size(res));
+ kfree(msic);
+
+ return 0;
+}
+
+static struct platform_driver intel_msic_driver = {
+ .probe = intel_msic_probe,
+ .remove = __devexit_p(intel_msic_remove),
+ .driver = {
+ .name = "intel_msic",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init intel_msic_init(void)
+{
+ return platform_driver_register(&intel_msic_driver);
+}
+module_init(intel_msic_init);
+
+static void __exit intel_msic_exit(void)
+{
+ platform_driver_unregister(&intel_msic_driver);
+}
+module_exit(intel_msic_exit);
+
+MODULE_DESCRIPTION("Driver for Intel MSIC");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/intel_msic.h b/include/linux/mfd/intel_msic.h
new file mode 100644
index 0000000..439a7a6
--- /dev/null
+++ b/include/linux/mfd/intel_msic.h
@@ -0,0 +1,456 @@
+/*
+ * include/linux/mfd/intel_msic.h - Core interface for Intel MSIC
+ *
+ * Copyright (C) 2011, Intel Corporation
+ * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * 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 __LINUX_MFD_INTEL_MSIC_H__
+#define __LINUX_MFD_INTEL_MSIC_H__
+
+/* ID */
+#define INTEL_MSIC_ID0 0x000 /* RO */
+#define INTEL_MSIC_ID1 0x001 /* RO */
+
+/* IRQ */
+#define INTEL_MSIC_IRQLVL1 0x002
+#define INTEL_MSIC_ADC1INT 0x003
+#define INTEL_MSIC_CCINT 0x004
+#define INTEL_MSIC_PWRSRCINT 0x005
+#define INTEL_MSIC_PWRSRCINT1 0x006
+#define INTEL_MSIC_CHRINT 0x007
+#define INTEL_MSIC_CHRINT1 0x008
+#define INTEL_MSIC_RTCIRQ 0x009
+#define INTEL_MSIC_GPIO0LVIRQ 0x00a
+#define INTEL_MSIC_GPIO1LVIRQ 0x00b
+#define INTEL_MSIC_GPIOHVIRQ 0x00c
+#define INTEL_MSIC_VRINT 0x00d
+#define INTEL_MSIC_OCAUDIO 0x00e
+#define INTEL_MSIC_ACCDET 0x00f
+#define INTEL_MSIC_RESETIRQ1 0x010
+#define INTEL_MSIC_RESETIRQ2 0x011
+#define INTEL_MSIC_MADC1INT 0x012
+#define INTEL_MSIC_MCCINT 0x013
+#define INTEL_MSIC_MPWRSRCINT 0x014
+#define INTEL_MSIC_MPWRSRCINT1 0x015
+#define INTEL_MSIC_MCHRINT 0x016
+#define INTEL_MSIC_MCHRINT1 0x017
+#define INTEL_MSIC_RTCIRQMASK 0x018
+#define INTEL_MSIC_GPIO0LVIRQMASK 0x019
+#define INTEL_MSIC_GPIO1LVIRQMASK 0x01a
+#define INTEL_MSIC_GPIOHVIRQMASK 0x01b
+#define INTEL_MSIC_VRINTMASK 0x01c
+#define INTEL_MSIC_OCAUDIOMASK 0x01d
+#define INTEL_MSIC_ACCDETMASK 0x01e
+#define INTEL_MSIC_RESETIRQ1MASK 0x01f
+#define INTEL_MSIC_RESETIRQ2MASK 0x020
+#define INTEL_MSIC_IRQLVL1MSK 0x021
+#define INTEL_MSIC_PBCONFIG 0x03e
+#define INTEL_MSIC_PBSTATUS 0x03f /* RO */
+
+/* GPIO */
+#define INTEL_MSIC_GPIO0LV7CTLO 0x040
+#define INTEL_MSIC_GPIO0LV6CTLO 0x041
+#define INTEL_MSIC_GPIO0LV5CTLO 0x042
+#define INTEL_MSIC_GPIO0LV4CTLO 0x043
+#define INTEL_MSIC_GPIO0LV3CTLO 0x044
+#define INTEL_MSIC_GPIO0LV2CTLO 0x045
+#define INTEL_MSIC_GPIO0LV1CTLO 0x046
+#define INTEL_MSIC_GPIO0LV0CTLO 0x047
+#define INTEL_MSIC_GPIO1LV7CTLOS 0x048
+#define INTEL_MSIC_GPIO1LV6CTLO 0x049
+#define INTEL_MSIC_GPIO1LV5CTLO 0x04a
+#define INTEL_MSIC_GPIO1LV4CTLO 0x04b
+#define INTEL_MSIC_GPIO1LV3CTLO 0x04c
+#define INTEL_MSIC_GPIO1LV2CTLO 0x04d
+#define INTEL_MSIC_GPIO1LV1CTLO 0x04e
+#define INTEL_MSIC_GPIO1LV0CTLO 0x04f
+#define INTEL_MSIC_GPIO0LV7CTLI 0x050
+#define INTEL_MSIC_GPIO0LV6CTLI 0x051
+#define INTEL_MSIC_GPIO0LV5CTLI 0x052
+#define INTEL_MSIC_GPIO0LV4CTLI 0x053
+#define INTEL_MSIC_GPIO0LV3CTLI 0x054
+#define INTEL_MSIC_GPIO0LV2CTLI 0x055
+#define INTEL_MSIC_GPIO0LV1CTLI 0x056
+#define INTEL_MSIC_GPIO0LV0CTLI 0x057
+#define INTEL_MSIC_GPIO1LV7CTLIS 0x058
+#define INTEL_MSIC_GPIO1LV6CTLI 0x059
+#define INTEL_MSIC_GPIO1LV5CTLI 0x05a
+#define INTEL_MSIC_GPIO1LV4CTLI 0x05b
+#define INTEL_MSIC_GPIO1LV3CTLI 0x05c
+#define INTEL_MSIC_GPIO1LV2CTLI 0x05d
+#define INTEL_MSIC_GPIO1LV1CTLI 0x05e
+#define INTEL_MSIC_GPIO1LV0CTLI 0x05f
+#define INTEL_MSIC_PWM0CLKDIV1 0x061
+#define INTEL_MSIC_PWM0CLKDIV0 0x062
+#define INTEL_MSIC_PWM1CLKDIV1 0x063
+#define INTEL_MSIC_PWM1CLKDIV0 0x064
+#define INTEL_MSIC_PWM2CLKDIV1 0x065
+#define INTEL_MSIC_PWM2CLKDIV0 0x066
+#define INTEL_MSIC_PWM0DUTYCYCLE 0x067
+#define INTEL_MSIC_PWM1DUTYCYCLE 0x068
+#define INTEL_MSIC_PWM2DUTYCYCLE 0x069
+#define INTEL_MSIC_GPIO0HV3CTLO 0x06d
+#define INTEL_MSIC_GPIO0HV2CTLO 0x06e
+#define INTEL_MSIC_GPIO0HV1CTLO 0x06f
+#define INTEL_MSIC_GPIO0HV0CTLO 0x070
+#define INTEL_MSIC_GPIO1HV3CTLO 0x071
+#define INTEL_MSIC_GPIO1HV2CTLO 0x072
+#define INTEL_MSIC_GPIO1HV1CTLO 0x073
+#define INTEL_MSIC_GPIO1HV0CTLO 0x074
+#define INTEL_MSIC_GPIO0HV3CTLI 0x075
+#define INTEL_MSIC_GPIO0HV2CTLI 0x076
+#define INTEL_MSIC_GPIO0HV1CTLI 0x077
+#define INTEL_MSIC_GPIO0HV0CTLI 0x078
+#define INTEL_MSIC_GPIO1HV3CTLI 0x079
+#define INTEL_MSIC_GPIO1HV2CTLI 0x07a
+#define INTEL_MSIC_GPIO1HV1CTLI 0x07b
+#define INTEL_MSIC_GPIO1HV0CTLI 0x07c
+
+/* SVID */
+#define INTEL_MSIC_SVIDCTRL0 0x080
+#define INTEL_MSIC_SVIDCTRL1 0x081
+#define INTEL_MSIC_SVIDCTRL2 0x082
+#define INTEL_MSIC_SVIDTXLASTPKT3 0x083 /* RO */
+#define INTEL_MSIC_SVIDTXLASTPKT2 0x084 /* RO */
+#define INTEL_MSIC_SVIDTXLASTPKT1 0x085 /* RO */
+#define INTEL_MSIC_SVIDTXLASTPKT0 0x086 /* RO */
+#define INTEL_MSIC_SVIDPKTOUTBYTE3 0x087
+#define INTEL_MSIC_SVIDPKTOUTBYTE2 0x088
+#define INTEL_MSIC_SVIDPKTOUTBYTE1 0x089
+#define INTEL_MSIC_SVIDPKTOUTBYTE0 0x08a
+#define INTEL_MSIC_SVIDRXVPDEBUG1 0x08b
+#define INTEL_MSIC_SVIDRXVPDEBUG0 0x08c
+#define INTEL_MSIC_SVIDRXLASTPKT3 0x08d /* RO */
+#define INTEL_MSIC_SVIDRXLASTPKT2 0x08e /* RO */
+#define INTEL_MSIC_SVIDRXLASTPKT1 0x08f /* RO */
+#define INTEL_MSIC_SVIDRXLASTPKT0 0x090 /* RO */
+#define INTEL_MSIC_SVIDRXCHKSTATUS3 0x091 /* RO */
+#define INTEL_MSIC_SVIDRXCHKSTATUS2 0x092 /* RO */
+#define INTEL_MSIC_SVIDRXCHKSTATUS1 0x093 /* RO */
+#define INTEL_MSIC_SVIDRXCHKSTATUS0 0x094 /* RO */
+
+/* VREG */
+#define INTEL_MSIC_VCCLATCH 0x0c0
+#define INTEL_MSIC_VNNLATCH 0x0c1
+#define INTEL_MSIC_VCCCNT 0x0c2
+#define INTEL_MSIC_SMPSRAMP 0x0c3
+#define INTEL_MSIC_VNNCNT 0x0c4
+#define INTEL_MSIC_VNNAONCNT 0x0c5
+#define INTEL_MSIC_VCC122AONCNT 0x0c6
+#define INTEL_MSIC_V180AONCNT 0x0c7
+#define INTEL_MSIC_V500CNT 0x0c8
+#define INTEL_MSIC_VIHFCNT 0x0c9
+#define INTEL_MSIC_LDORAMP1 0x0ca
+#define INTEL_MSIC_LDORAMP2 0x0cb
+#define INTEL_MSIC_VCC108AONCNT 0x0cc
+#define INTEL_MSIC_VCC108ASCNT 0x0cd
+#define INTEL_MSIC_VCC108CNT 0x0ce
+#define INTEL_MSIC_VCCA100ASCNT 0x0cf
+#define INTEL_MSIC_VCCA100CNT 0x0d0
+#define INTEL_MSIC_VCC180AONCNT 0x0d1
+#define INTEL_MSIC_VCC180CNT 0x0d2
+#define INTEL_MSIC_VCC330CNT 0x0d3
+#define INTEL_MSIC_VUSB330CNT 0x0d4
+#define INTEL_MSIC_VCCSDIOCNT 0x0d5
+#define INTEL_MSIC_VPROG1CNT 0x0d6
+#define INTEL_MSIC_VPROG2CNT 0x0d7
+#define INTEL_MSIC_VEMMCSCNT 0x0d8
+#define INTEL_MSIC_VEMMC1CNT 0x0d9
+#define INTEL_MSIC_VEMMC2CNT 0x0da
+#define INTEL_MSIC_VAUDACNT 0x0db
+#define INTEL_MSIC_VHSPCNT 0x0dc
+#define INTEL_MSIC_VHSNCNT 0x0dd
+#define INTEL_MSIC_VHDMICNT 0x0de
+#define INTEL_MSIC_VOTGCNT 0x0df
+#define INTEL_MSIC_V1P35CNT 0x0e0
+#define INTEL_MSIC_V330AONCNT 0x0e1
+
+/* RESET */
+#define INTEL_MSIC_CHIPCNTRL 0x100 /* WO */
+#define INTEL_MSIC_ERCONFIG 0x101
+
+/* BURST */
+#define INTEL_MSIC_BATCURRENTLIMIT12 0x102
+#define INTEL_MSIC_BATTIMELIMIT12 0x103
+#define INTEL_MSIC_BATTIMELIMIT3 0x104
+#define INTEL_MSIC_BATTIMEDB 0x105
+#define INTEL_MSIC_BRSTCONFIGOUTPUTS 0x106
+#define INTEL_MSIC_BRSTCONFIGACTIONS 0x107
+#define INTEL_MSIC_BURSTCONTROLSTATUS 0x108
+
+/* RTC */
+#define INTEL_MSIC_RTCB1 0x140 /* RO */
+#define INTEL_MSIC_RTCB2 0x141 /* RO */
+#define INTEL_MSIC_RTCB3 0x142 /* RO */
+#define INTEL_MSIC_RTCB4 0x143 /* RO */
+#define INTEL_MSIC_RTCOB1 0x144
+#define INTEL_MSIC_RTCOB2 0x145
+#define INTEL_MSIC_RTCOB3 0x146
+#define INTEL_MSIC_RTCOB4 0x147
+#define INTEL_MSIC_RTCAB1 0x148
+#define INTEL_MSIC_RTCAB2 0x149
+#define INTEL_MSIC_RTCAB3 0x14a
+#define INTEL_MSIC_RTCAB4 0x14b
+#define INTEL_MSIC_RTCWAB1 0x14c
+#define INTEL_MSIC_RTCWAB2 0x14d
+#define INTEL_MSIC_RTCWAB3 0x14e
+#define INTEL_MSIC_RTCWAB4 0x14f
+#define INTEL_MSIC_RTCSC1 0x150
+#define INTEL_MSIC_RTCSC2 0x151
+#define INTEL_MSIC_RTCSC3 0x152
+#define INTEL_MSIC_RTCSC4 0x153
+#define INTEL_MSIC_RTCSTATUS 0x154 /* RO */
+#define INTEL_MSIC_RTCCONFIG1 0x155
+#define INTEL_MSIC_RTCCONFIG2 0x156
+
+/* CHARGER */
+#define INTEL_MSIC_BDTIMER 0x180
+#define INTEL_MSIC_BATTRMV 0x181
+#define INTEL_MSIC_VBUSDET 0x182
+#define INTEL_MSIC_VBUSDET1 0x183
+#define INTEL_MSIC_ADPHVDET 0x184
+#define INTEL_MSIC_ADPLVDET 0x185
+#define INTEL_MSIC_ADPDETDBDM 0x186
+#define INTEL_MSIC_LOWBATTDET 0x187
+#define INTEL_MSIC_CHRCTRL 0x188
+#define INTEL_MSIC_CHRCVOLTAGE 0x189
+#define INTEL_MSIC_CHRCCURRENT 0x18a
+#define INTEL_MSIC_SPCHARGER 0x18b
+#define INTEL_MSIC_CHRTTIME 0x18c
+#define INTEL_MSIC_CHRCTRL1 0x18d
+#define INTEL_MSIC_PWRSRCLMT 0x18e
+#define INTEL_MSIC_CHRSTWDT 0x18f
+#define INTEL_MSIC_WDTWRITE 0x190 /* WO */
+#define INTEL_MSIC_CHRSAFELMT 0x191
+#define INTEL_MSIC_SPWRSRCINT 0x192 /* RO */
+#define INTEL_MSIC_SPWRSRCINT1 0x193 /* RO */
+#define INTEL_MSIC_CHRLEDPWM 0x194
+#define INTEL_MSIC_CHRLEDCTRL 0x195
+
+/* ADC */
+#define INTEL_MSIC_ADC1CNTL1 0x1c0
+#define INTEL_MSIC_ADC1CNTL2 0x1c1
+#define INTEL_MSIC_ADC1CNTL3 0x1c2
+#define INTEL_MSIC_ADC1OFFSETH 0x1c3 /* RO */
+#define INTEL_MSIC_ADC1OFFSETL 0x1c4 /* RO */
+#define INTEL_MSIC_ADC1ADDR0 0x1c5
+#define INTEL_MSIC_ADC1ADDR1 0x1c6
+#define INTEL_MSIC_ADC1ADDR2 0x1c7
+#define INTEL_MSIC_ADC1ADDR3 0x1c8
+#define INTEL_MSIC_ADC1ADDR4 0x1c9
+#define INTEL_MSIC_ADC1ADDR5 0x1ca
+#define INTEL_MSIC_ADC1ADDR6 0x1cb
+#define INTEL_MSIC_ADC1ADDR7 0x1cc
+#define INTEL_MSIC_ADC1ADDR8 0x1cd
+#define INTEL_MSIC_ADC1ADDR9 0x1ce
+#define INTEL_MSIC_ADC1ADDR10 0x1cf
+#define INTEL_MSIC_ADC1ADDR11 0x1d0
+#define INTEL_MSIC_ADC1ADDR12 0x1d1
+#define INTEL_MSIC_ADC1ADDR13 0x1d2
+#define INTEL_MSIC_ADC1ADDR14 0x1d3
+#define INTEL_MSIC_ADC1SNS0H 0x1d4 /* RO */
+#define INTEL_MSIC_ADC1SNS0L 0x1d5 /* RO */
+#define INTEL_MSIC_ADC1SNS1H 0x1d6 /* RO */
+#define INTEL_MSIC_ADC1SNS1L 0x1d7 /* RO */
+#define INTEL_MSIC_ADC1SNS2H 0x1d8 /* RO */
+#define INTEL_MSIC_ADC1SNS2L 0x1d9 /* RO */
+#define INTEL_MSIC_ADC1SNS3H 0x1da /* RO */
+#define INTEL_MSIC_ADC1SNS3L 0x1db /* RO */
+#define INTEL_MSIC_ADC1SNS4H 0x1dc /* RO */
+#define INTEL_MSIC_ADC1SNS4L 0x1dd /* RO */
+#define INTEL_MSIC_ADC1SNS5H 0x1de /* RO */
+#define INTEL_MSIC_ADC1SNS5L 0x1df /* RO */
+#define INTEL_MSIC_ADC1SNS6H 0x1e0 /* RO */
+#define INTEL_MSIC_ADC1SNS6L 0x1e1 /* RO */
+#define INTEL_MSIC_ADC1SNS7H 0x1e2 /* RO */
+#define INTEL_MSIC_ADC1SNS7L 0x1e3 /* RO */
+#define INTEL_MSIC_ADC1SNS8H 0x1e4 /* RO */
+#define INTEL_MSIC_ADC1SNS8L 0x1e5 /* RO */
+#define INTEL_MSIC_ADC1SNS9H 0x1e6 /* RO */
+#define INTEL_MSIC_ADC1SNS9L 0x1e7 /* RO */
+#define INTEL_MSIC_ADC1SNS10H 0x1e8 /* RO */
+#define INTEL_MSIC_ADC1SNS10L 0x1e9 /* RO */
+#define INTEL_MSIC_ADC1SNS11H 0x1ea /* RO */
+#define INTEL_MSIC_ADC1SNS11L 0x1eb /* RO */
+#define INTEL_MSIC_ADC1SNS12H 0x1ec /* RO */
+#define INTEL_MSIC_ADC1SNS12L 0x1ed /* RO */
+#define INTEL_MSIC_ADC1SNS13H 0x1ee /* RO */
+#define INTEL_MSIC_ADC1SNS13L 0x1ef /* RO */
+#define INTEL_MSIC_ADC1SNS14H 0x1f0 /* RO */
+#define INTEL_MSIC_ADC1SNS14L 0x1f1 /* RO */
+#define INTEL_MSIC_ADC1BV0H 0x1f2 /* RO */
+#define INTEL_MSIC_ADC1BV0L 0x1f3 /* RO */
+#define INTEL_MSIC_ADC1BV1H 0x1f4 /* RO */
+#define INTEL_MSIC_ADC1BV1L 0x1f5 /* RO */
+#define INTEL_MSIC_ADC1BV2H 0x1f6 /* RO */
+#define INTEL_MSIC_ADC1BV2L 0x1f7 /* RO */
+#define INTEL_MSIC_ADC1BV3H 0x1f8 /* RO */
+#define INTEL_MSIC_ADC1BV3L 0x1f9 /* RO */
+#define INTEL_MSIC_ADC1BI0H 0x1fa /* RO */
+#define INTEL_MSIC_ADC1BI0L 0x1fb /* RO */
+#define INTEL_MSIC_ADC1BI1H 0x1fc /* RO */
+#define INTEL_MSIC_ADC1BI1L 0x1fd /* RO */
+#define INTEL_MSIC_ADC1BI2H 0x1fe /* RO */
+#define INTEL_MSIC_ADC1BI2L 0x1ff /* RO */
+#define INTEL_MSIC_ADC1BI3H 0x200 /* RO */
+#define INTEL_MSIC_ADC1BI3L 0x201 /* RO */
+#define INTEL_MSIC_CCCNTL 0x202
+#define INTEL_MSIC_CCOFFSETH 0x203 /* RO */
+#define INTEL_MSIC_CCOFFSETL 0x204 /* RO */
+#define INTEL_MSIC_CCADCHA 0x205 /* RO */
+#define INTEL_MSIC_CCADCLA 0x206 /* RO */
+
+/* AUDIO */
+#define INTEL_MSIC_AUDPLLCTRL 0x240
+#define INTEL_MSIC_DMICBUF0123 0x241
+#define INTEL_MSIC_DMICBUF45 0x242
+#define INTEL_MSIC_DMICGPO 0x244
+#define INTEL_MSIC_DMICMUX 0x245
+#define INTEL_MSIC_DMICCLK 0x246
+#define INTEL_MSIC_MICBIAS 0x247
+#define INTEL_MSIC_ADCCONFIG 0x248
+#define INTEL_MSIC_MICAMP1 0x249
+#define INTEL_MSIC_MICAMP2 0x24a
+#define INTEL_MSIC_NOISEMUX 0x24b
+#define INTEL_MSIC_AUDIOMUX12 0x24c
+#define INTEL_MSIC_AUDIOMUX34 0x24d
+#define INTEL_MSIC_AUDIOSINC 0x24e
+#define INTEL_MSIC_AUDIOTXEN 0x24f
+#define INTEL_MSIC_HSEPRXCTRL 0x250
+#define INTEL_MSIC_IHFRXCTRL 0x251
+#define INTEL_MSIC_VOICETXVOL 0x252
+#define INTEL_MSIC_SIDETONEVOL 0x253
+#define INTEL_MSIC_MUSICSHARVOL 0x254
+#define INTEL_MSIC_VOICETXCTRL 0x255
+#define INTEL_MSIC_HSMIXER 0x256
+#define INTEL_MSIC_DACCONFIG 0x257
+#define INTEL_MSIC_SOFTMUTE 0x258
+#define INTEL_MSIC_HSLVOLCTRL 0x259
+#define INTEL_MSIC_HSRVOLCTRL 0x25a
+#define INTEL_MSIC_IHFLVOLCTRL 0x25b
+#define INTEL_MSIC_IHFRVOLCTRL 0x25c
+#define INTEL_MSIC_DRIVEREN 0x25d
+#define INTEL_MSIC_LINEOUTCTRL 0x25e
+#define INTEL_MSIC_VIB1CTRL1 0x25f
+#define INTEL_MSIC_VIB1CTRL2 0x260
+#define INTEL_MSIC_VIB1CTRL3 0x261
+#define INTEL_MSIC_VIB1SPIPCM_1 0x262
+#define INTEL_MSIC_VIB1SPIPCM_2 0x263
+#define INTEL_MSIC_VIB1CTRL5 0x264
+#define INTEL_MSIC_VIB2CTRL1 0x265
+#define INTEL_MSIC_VIB2CTRL2 0x266
+#define INTEL_MSIC_VIB2CTRL3 0x267
+#define INTEL_MSIC_VIB2SPIPCM_1 0x268
+#define INTEL_MSIC_VIB2SPIPCM_2 0x269
+#define INTEL_MSIC_VIB2CTRL5 0x26a
+#define INTEL_MSIC_BTNCTRL1 0x26b
+#define INTEL_MSIC_BTNCTRL2 0x26c
+#define INTEL_MSIC_PCM1TXSLOT01 0x26d
+#define INTEL_MSIC_PCM1TXSLOT23 0x26e
+#define INTEL_MSIC_PCM1TXSLOT45 0x26f
+#define INTEL_MSIC_PCM1RXSLOT0123 0x270
+#define INTEL_MSIC_PCM1RXSLOT045 0x271
+#define INTEL_MSIC_PCM2TXSLOT01 0x272
+#define INTEL_MSIC_PCM2TXSLOT23 0x273
+#define INTEL_MSIC_PCM2TXSLOT45 0x274
+#define INTEL_MSIC_PCM2RXSLOT01 0x275
+#define INTEL_MSIC_PCM2RXSLOT23 0x276
+#define INTEL_MSIC_PCM2RXSLOT45 0x277
+#define INTEL_MSIC_PCM1CTRL1 0x278
+#define INTEL_MSIC_PCM1CTRL2 0x279
+#define INTEL_MSIC_PCM1CTRL3 0x27a
+#define INTEL_MSIC_PCM2CTRL1 0x27b
+#define INTEL_MSIC_PCM2CTRL2 0x27c
+
+/* HDMI */
+#define INTEL_MSIC_HDMIPUEN 0x280
+#define INTEL_MSIC_HDMISTATUS 0x281 /* RO */
+
+/* Physical address of the start of the MSIC interrupt tree in SRAM */
+#define INTEL_MSIC_IRQ_PHYS_BASE 0xffff7fc0
+
+/**
+ * struct intel_msic_gpio_pdata - platform data for the MSIC GPIO driver
+ * @gpio_base: base number for the GPIOs
+ */
+struct intel_msic_gpio_pdata {
+ unsigned gpio_base;
+};
+
+/**
+ * struct intel_msic_ocd_pdata - platform data for the MSIC OCD driver
+ * @gpio: GPIO number used for OCD interrupts
+ *
+ * The MSIC MFD driver converts @gpio into an IRQ number and passes it to
+ * the OCD driver as %IORESOURCE_IRQ.
+ */
+struct intel_msic_ocd_pdata {
+ unsigned gpio;
+};
+
+/* MSIC embedded blocks (subdevices) */
+enum intel_msic_block {
+ INTEL_MSIC_BLOCK_TOUCH,
+ INTEL_MSIC_BLOCK_ADC,
+ INTEL_MSIC_BLOCK_BATTERY,
+ INTEL_MSIC_BLOCK_GPIO,
+ INTEL_MSIC_BLOCK_AUDIO,
+ INTEL_MSIC_BLOCK_HDMI,
+ INTEL_MSIC_BLOCK_THERMAL,
+ INTEL_MSIC_BLOCK_POWER_BTN,
+ INTEL_MSIC_BLOCK_OCD,
+
+ INTEL_MSIC_BLOCK_LAST,
+};
+
+/**
+ * struct intel_msic_platform_data - platform data for the MSIC driver
+ * @irq: array of interrupt numbers, one per device. If @irq is set to %0
+ * for a given block, the corresponding platform device is not
+ * created. For devices which don't have an interrupt, use %0xff
+ * (this is same as in SFI spec).
+ * @gpio: platform data for the MSIC GPIO driver
+ * @ocd: platform data for the MSIC OCD driver
+ *
+ * Once the MSIC driver is initialized, the register interface is ready to
+ * use. All the platform devices for subdevices are created after the
+ * register interface is ready so that we can guarantee its availability to
+ * the subdevice drivers.
+ *
+ * Interrupt numbers are passed to the subdevices via %IORESOURCE_IRQ
+ * resources of the created platform device.
+ */
+struct intel_msic_platform_data {
+ int irq[INTEL_MSIC_BLOCK_LAST];
+ struct intel_msic_gpio_pdata *gpio;
+ struct intel_msic_ocd_pdata *ocd;
+};
+
+struct intel_msic;
+
+extern int intel_msic_reg_read(unsigned short reg, u8 *val);
+extern int intel_msic_reg_write(unsigned short reg, u8 val);
+extern int intel_msic_reg_update(unsigned short reg, u8 val, u8 mask);
+extern int intel_msic_bulk_read(unsigned short *reg, u8 *buf, size_t count);
+extern int intel_msic_bulk_write(unsigned short *reg, u8 *buf, size_t count);
+
+/*
+ * pdev_to_intel_msic - gets an MSIC instance from the platform device
+ * @pdev: platform device pointer
+ *
+ * The client drivers need to have pointer to the MSIC instance if they
+ * want to call intel_msic_irq_read(). This macro can be used for
+ * convenience to get the MSIC pointer from @pdev where needed. This is
+ * _only_ valid for devices which are managed by the MSIC.
+ */
+#define pdev_to_intel_msic(pdev) (dev_get_drvdata(pdev->dev.parent))
+
+extern int intel_msic_irq_read(struct intel_msic *msic, unsigned short reg,
+ u8 *val);
+
+#endif /* __LINUX_MFD_INTEL_MSIC_H__ */
--
1.7.5.4
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 3/3] x86, mrst: add platform support for MSIC MFD driver
2011-09-07 13:06 [PATCH 0/3] Intel MSIC MFD driver for Medfield platform Mika Westerberg
2011-09-07 13:06 ` [PATCH 1/3] mfd: add Intel MSIC driver Mika Westerberg
2011-09-07 13:06 ` [PATCH 2/3] x86, mrst: Some drivers need to known when an SCU is available Mika Westerberg
@ 2011-09-07 13:06 ` Mika Westerberg
2011-10-14 7:59 ` Mika Westerberg
2011-09-19 7:34 ` [PATCH 0/3] Intel MSIC MFD driver for Medfield platform Mika Westerberg
3 siblings, 1 reply; 14+ messages in thread
From: Mika Westerberg @ 2011-09-07 13:06 UTC (permalink / raw)
To: linux-kernel
Cc: alan, sameo, tglx, mingo, hpa, feng.tang, jacob.jun.pan,
Mika Westerberg
The MSIC MFD driver creates platform devices for MSIC device drivers so we
don't need to create them in platform code anymore.
This patch adds a new runtime check which determines whether we are running
on a Medfield platform and enables the MSIC MFD driver accordingly.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
arch/x86/platform/mrst/mrst.c | 167 +++++++++++++++++++++++++++++++++++++----
1 files changed, 153 insertions(+), 14 deletions(-)
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index 97138a3..2a89f70 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -25,6 +25,7 @@
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/notifier.h>
+#include <linux/mfd/intel_msic.h>
#include <asm/setup.h>
#include <asm/mpspec_def.h>
@@ -504,6 +505,128 @@ static void __init *no_platform_data(void *info)
return NULL;
}
+static struct resource msic_resources[] = {
+ {
+ .start = INTEL_MSIC_IRQ_PHYS_BASE,
+ .end = INTEL_MSIC_IRQ_PHYS_BASE + 64 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct intel_msic_platform_data msic_pdata;
+
+static struct platform_device msic_device = {
+ .name = "intel_msic",
+ .id = -1,
+ .dev = {
+ .platform_data = &msic_pdata,
+ },
+ .num_resources = ARRAY_SIZE(msic_resources),
+ .resource = msic_resources,
+};
+
+static inline bool mrst_has_msic(void)
+{
+ return mrst_identify_cpu() == MRST_CPU_CHIP_PENWELL;
+}
+
+static int msic_scu_status_change(struct notifier_block *nb,
+ unsigned long code, void *data)
+{
+ if (code == SCU_DOWN) {
+ platform_device_unregister(&msic_device);
+ return 0;
+ }
+
+ return platform_device_register(&msic_device);
+}
+
+static int __init msic_init(void)
+{
+ static struct notifier_block msic_scu_notifier = {
+ .notifier_call = msic_scu_status_change,
+ };
+
+ /*
+ * We need to be sure that the SCU IPC is ready before MSIC device
+ * can be registered.
+ */
+ if (mrst_has_msic())
+ intel_scu_notifier_add(&msic_scu_notifier);
+
+ return 0;
+}
+arch_initcall(msic_init);
+
+/*
+ * msic_generic_platform_data - sets generic platform data for the block
+ * @info: pointer to the SFI device table entry for this block
+ * @block: MSIC block
+ *
+ * Function sets IRQ number from the SFI table entry for given device to
+ * the MSIC platform data.
+ */
+static void *msic_generic_platform_data(void *info, enum intel_msic_block block)
+{
+ struct sfi_device_table_entry *entry = info;
+
+ BUG_ON(block < 0 || block >= INTEL_MSIC_BLOCK_LAST);
+ msic_pdata.irq[block] = entry->irq;
+
+ return no_platform_data(info);
+}
+
+static void *msic_battery_platform_data(void *info)
+{
+ return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_BATTERY);
+}
+
+static void *msic_gpio_platform_data(void *info)
+{
+ static struct intel_msic_gpio_pdata pdata;
+ int gpio = get_gpio_by_name("msic_gpio_base");
+
+ if (gpio < 0)
+ return NULL;
+
+ pdata.gpio_base = gpio;
+ msic_pdata.gpio = &pdata;
+
+ return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_GPIO);
+}
+
+static void *msic_audio_platform_data(void *info)
+{
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_simple("sst-platform", -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ pr_err("failed to create audio platform device\n");
+ return NULL;
+ }
+
+ return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_AUDIO);
+}
+
+static void *msic_power_btn_platform_data(void *info)
+{
+ return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_POWER_BTN);
+}
+
+static void *msic_ocd_platform_data(void *info)
+{
+ static struct intel_msic_ocd_pdata pdata;
+ int gpio = get_gpio_by_name("ocd_gpio");
+
+ if (gpio < 0)
+ return NULL;
+
+ pdata.gpio = gpio;
+ msic_pdata.ocd = &pdata;
+
+ return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_OCD);
+}
+
static const struct devs_id __initconst device_ids[] = {
{"pmic_gpio", SFI_DEV_TYPE_SPI, 1, &pmic_gpio_platform_data},
{"spi_max3111", SFI_DEV_TYPE_SPI, 0, &max3111_platform_data},
@@ -512,7 +635,14 @@ static const struct devs_id __initconst device_ids[] = {
{"emc1403", SFI_DEV_TYPE_I2C, 1, &emc1403_platform_data},
{"i2c_accel", SFI_DEV_TYPE_I2C, 0, &lis331dl_platform_data},
{"pmic_audio", SFI_DEV_TYPE_IPC, 1, &no_platform_data},
- {"msic_audio", SFI_DEV_TYPE_IPC, 1, &no_platform_data},
+
+ /* MSIC subdevices */
+ {"msic_battery", SFI_DEV_TYPE_IPC, 1, &msic_battery_platform_data},
+ {"msic_gpio", SFI_DEV_TYPE_IPC, 1, &msic_gpio_platform_data},
+ {"msic_audio", SFI_DEV_TYPE_IPC, 1, &msic_audio_platform_data},
+ {"msic_power_btn", SFI_DEV_TYPE_IPC, 1, &msic_power_btn_platform_data},
+ {"msic_ocd", SFI_DEV_TYPE_IPC, 1, &msic_ocd_platform_data},
+
{},
};
@@ -633,19 +763,37 @@ static void __init install_irq_resource(struct platform_device *pdev, int irq)
platform_device_add_resources(pdev, &res, 1);
}
-static void __init sfi_handle_ipc_dev(struct platform_device *pdev)
+static void __init sfi_handle_ipc_dev(struct sfi_device_table_entry *entry)
{
const struct devs_id *dev = device_ids;
+ struct platform_device *pdev;
void *pdata = NULL;
while (dev->name[0]) {
if (dev->type == SFI_DEV_TYPE_IPC &&
- !strncmp(dev->name, pdev->name, SFI_NAME_LEN)) {
- pdata = dev->get_platform_data(pdev);
+ !strncmp(dev->name, entry->name, SFI_NAME_LEN)) {
+ pdata = dev->get_platform_data(entry);
break;
}
dev++;
}
+
+ /*
+ * On Medfield the platform device creation is handled by the MSIC
+ * MFD driver so we don't need to do it here.
+ */
+ if (mrst_has_msic())
+ return;
+
+ /* ID as IRQ is a hack that will go away */
+ pdev = platform_device_alloc(entry->name, entry->irq);
+ if (pdev == NULL) {
+ pr_err("out of memory for SFI platform device '%s'.\n",
+ entry->name);
+ return;
+ }
+ install_irq_resource(pdev, entry->irq);
+
pdev->dev.platform_data = pdata;
intel_scu_device_register(pdev);
}
@@ -698,7 +846,6 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
struct sfi_device_table_entry *pentry;
struct spi_board_info spi_info;
struct i2c_board_info i2c_info;
- struct platform_device *pdev;
int num, i, bus;
int ioapic;
struct io_apic_irq_attr irq_attr;
@@ -724,17 +871,9 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
switch (pentry->type) {
case SFI_DEV_TYPE_IPC:
- /* ID as IRQ is a hack that will go away */
- pdev = platform_device_alloc(pentry->name, pentry->irq);
- if (pdev == NULL) {
- pr_err("out of memory for SFI platform device '%s'.\n",
- pentry->name);
- continue;
- }
- install_irq_resource(pdev, pentry->irq);
pr_debug("info[%2d]: IPC bus, name = %16.16s, "
"irq = 0x%2x\n", i, pentry->name, pentry->irq);
- sfi_handle_ipc_dev(pdev);
+ sfi_handle_ipc_dev(pentry);
break;
case SFI_DEV_TYPE_SPI:
memset(&spi_info, 0, sizeof(spi_info));
--
1.7.5.4
^ permalink raw reply related [flat|nested] 14+ messages in thread