| Message ID | 1417038661-30209-3-git-send-email-bjorn.andersson@sonymobile.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Bjorn, On Wed, 2014-11-26 at 13:51 -0800, Bjorn Andersson wrote: > Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960 > and 8064 based devices. The driver exposes resources that child drivers > can operate on; to implementing regulator, clock and bus frequency > drivers. > > Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> > --- > > Lee, since your Acked-by earlier I've folded in the part of the RFC where I add > an extra parameter to qcom_rpm_write(). Part of that this is unchanged. > > drivers/mfd/Kconfig | 14 ++ > drivers/mfd/Makefile | 1 + > drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/qcom_rpm.h | 13 + > 4 files changed, 609 insertions(+) > create mode 100644 drivers/mfd/qcom_rpm.c > create mode 100644 include/linux/mfd/qcom_rpm.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 1456ea7..b6bcb79 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -567,6 +567,20 @@ config MFD_PM8921_CORE > Say M here if you want to include support for PM8921 chip as a module. > This will build a module called "pm8921-core". > > +config MFD_QCOM_RPM > + tristate "Qualcomm Resource Power Manager (RPM)" > + depends on ARCH_QCOM && OF > + help > + If you say yes to this option, support will be included for the > + Resource Power Manager system found in the Qualcomm 8660, 8960 and > + 8064 based devices. > + > + This is required to access many regulators, clocks and bus > + frequencies controlled by the RPM on these devices. > + > + Say M here if you want to include support for the Qualcomm RPM as a > + module. This will build a module called "qcom_rpm". > + The Qualcomm RPM regulator driver (see Kconfig symbol REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol, so it has not yet gotten build coverage. Even manual hacks like make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko won't work for that driver, because it includes linux/mfd/qcom_rpm.h, which is not part of the tree. It seems there's no generally agreed upon guideline for situations like this. So I guess it's up to Mark to decide how long the tree should include an unbuildable driver. Paul Bolle
On Mon, Dec 22, 2014 at 2:50 AM, Paul Bolle <pebolle@tiscali.nl> wrote: > Hi Bjorn, > Hi Paul [..] > > The Qualcomm RPM regulator driver (see Kconfig symbol > REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol, > so it has not yet gotten build coverage. Even manual hacks like > make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko > > won't work for that driver, because it includes linux/mfd/qcom_rpm.h, > which is not part of the tree. > Correct, but unfortunately Lee Jones awaits devicetree maintainers ack (or any comment) and have been doing so for months now. I did send out a ping a few weeks ago, but might have done so when they where occupied by the merge window. Lee, the Qualcomm RPM binding is not for a subsystem and is limited to Qualcomm devices. Could we apply this in accordance with II.2 in Documentation/devicetree/bindings/submitting-patches.txt or is there anything I could do to make you feel comfortable doing so? > It seems there's no generally agreed upon guideline for situations like > this. So I guess it's up to Mark to decide how long the tree should > include an unbuildable driver. > I haven't seen any guidelines, but appreciate Mark's way of working in this matter - as we've been able to run our devices with fewer out-of-tree patches. Regards, Bjorn
On Wed, 26 Nov 2014, Bjorn Andersson wrote: > Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960 > and 8064 based devices. The driver exposes resources that child drivers > can operate on; to implementing regulator, clock and bus frequency > drivers. > > Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> > --- > > Lee, since your Acked-by earlier I've folded in the part of the RFC where I add > an extra parameter to qcom_rpm_write(). Part of that this is unchanged. > > drivers/mfd/Kconfig | 14 ++ > drivers/mfd/Makefile | 1 + > drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/qcom_rpm.h | 13 + > 4 files changed, 609 insertions(+) > create mode 100644 drivers/mfd/qcom_rpm.c > create mode 100644 include/linux/mfd/qcom_rpm.h Applied, thanks. > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 1456ea7..b6bcb79 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -567,6 +567,20 @@ config MFD_PM8921_CORE > Say M here if you want to include support for PM8921 chip as a module. > This will build a module called "pm8921-core". > > +config MFD_QCOM_RPM > + tristate "Qualcomm Resource Power Manager (RPM)" > + depends on ARCH_QCOM && OF > + help > + If you say yes to this option, support will be included for the > + Resource Power Manager system found in the Qualcomm 8660, 8960 and > + 8064 based devices. > + > + This is required to access many regulators, clocks and bus > + frequencies controlled by the RPM on these devices. > + > + Say M here if you want to include support for the Qualcomm RPM as a > + module. This will build a module called "qcom_rpm". > + > config MFD_SPMI_PMIC > tristate "Qualcomm SPMI PMICs" > depends on ARCH_QCOM || COMPILE_TEST > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index 8bd54b1..3364bbc 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o > obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o > obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o > obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o > +obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o > obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o > obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o > obj-$(CONFIG_MFD_TPS65090) += tps65090.o > diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c > new file mode 100644 > index 0000000..f696328 > --- /dev/null > +++ b/drivers/mfd/qcom_rpm.c > @@ -0,0 +1,581 @@ > +/* > + * Copyright (c) 2014, Sony Mobile Communications AB. > + * Copyright (c) 2013, The Linux Foundation. All rights reserved. > + * Author: Bjorn Andersson <bjorn.andersson@sonymobile.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 and > + * only version 2 as published by the Free Software Foundation. > + * > + * 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. > + */ > + > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/of_platform.h> > +#include <linux/io.h> > +#include <linux/interrupt.h> > +#include <linux/mfd/qcom_rpm.h> > +#include <linux/mfd/syscon.h> > +#include <linux/regmap.h> > + > +#include <dt-bindings/mfd/qcom-rpm.h> > + > +struct qcom_rpm_resource { > + unsigned target_id; > + unsigned status_id; > + unsigned select_id; > + unsigned size; > +}; > + > +struct qcom_rpm_data { > + u32 version; > + const struct qcom_rpm_resource *resource_table; > + unsigned n_resources; > +}; > + > +struct qcom_rpm { > + struct device *dev; > + struct regmap *ipc_regmap; > + unsigned ipc_offset; > + unsigned ipc_bit; > + > + struct completion ack; > + struct mutex lock; > + > + void __iomem *status_regs; > + void __iomem *ctrl_regs; > + void __iomem *req_regs; > + > + u32 ack_status; > + > + const struct qcom_rpm_data *data; > +}; > + > +#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4) > +#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4) > +#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4) > + > +#define RPM_REQUEST_TIMEOUT (5 * HZ) > + > +#define RPM_REQUEST_CONTEXT 3 > +#define RPM_REQ_SELECT 11 > +#define RPM_ACK_CONTEXT 15 > +#define RPM_ACK_SELECTOR 23 > +#define RPM_SELECT_SIZE 7 > + > +#define RPM_NOTIFICATION BIT(30) > +#define RPM_REJECTED BIT(31) > + > +#define RPM_SIGNAL BIT(2) > + > +static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = { > + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 }, > + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 }, > + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 }, > + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 }, > + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 }, > + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 }, > + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 }, > + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 }, > + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 }, > + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 }, > + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 }, > + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 }, > + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 }, > + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 }, > + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 }, > + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 }, > + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 }, > + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 }, > + [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 }, > + [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 }, > + [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 }, > + [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 }, > + [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 }, > + [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 }, > + [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 }, > + [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 }, > + [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 }, > + [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 }, > + [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 }, > + [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 }, > + [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 }, > + [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 }, > + [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 }, > + [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 }, > + [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 }, > + [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 }, > + [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 }, > + [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 }, > + [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 }, > + [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 }, > + [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 }, > + [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 }, > + [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 }, > + [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 }, > + [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 }, > + [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 }, > + [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 }, > + [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 }, > + [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 }, > + [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 }, > + [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 }, > + [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 }, > + [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 }, > + [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 }, > + [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 }, > + [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 }, > + [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 }, > + [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 }, > + [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 }, > + [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 }, > + [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 }, > + [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 }, > + [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 }, > + [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 }, > + [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 }, > + [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 }, > + [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 }, > + [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 }, > + [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 }, > + [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 }, > + [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 }, > + [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 }, > + [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 }, > + [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 }, > + [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 }, > + [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 }, > + [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 }, > +}; > + > +static const struct qcom_rpm_data apq8064_template = { > + .version = 3, > + .resource_table = apq8064_rpm_resource_table, > + .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table), > +}; > + > +static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = { > + [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 }, > + [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 }, > + [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 }, > + [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 }, > + [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 }, > + [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 }, > + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 }, > + [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 }, > + [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 }, > + [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 }, > + [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 }, > + [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 }, > + [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 }, > + [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 }, > + [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 }, > + [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 }, > + [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 }, > + [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 }, > + [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 }, > + [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 }, > + [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 }, > + [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 }, > + [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 }, > + [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 }, > + [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 }, > + [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 }, > + [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 }, > + [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 }, > + [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 }, > + [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 }, > + [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 }, > + [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 }, > + [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 }, > + [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 }, > + [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 }, > + [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 }, > + [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 }, > + [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 }, > + [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 }, > + [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 }, > + [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 }, > + [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 }, > + [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 }, > + [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 }, > + [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 }, > + [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 }, > + [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 }, > + [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 }, > + [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 }, > + [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 }, > + [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 }, > + [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 }, > + [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 }, > + [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 }, > + [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 }, > + [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 }, > + [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 }, > + [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 }, > + [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 }, > + [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 }, > + [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 }, > + [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 }, > + [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 }, > + [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 }, > + [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 }, > + [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 }, > + [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 }, > + [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 }, > + [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 }, > + [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 }, > + [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 }, > + [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 }, > + [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 }, > + [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 }, > +}; > + > +static const struct qcom_rpm_data msm8660_template = { > + .version = 2, > + .resource_table = msm8660_rpm_resource_table, > + .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table), > +}; > + > +static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = { > + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 }, > + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 }, > + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 }, > + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 }, > + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 }, > + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 }, > + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 }, > + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 }, > + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 }, > + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 }, > + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 }, > + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 }, > + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 }, > + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 }, > + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 }, > + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 }, > + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 }, > + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 }, > + [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 }, > + [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 }, > + [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 }, > + [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 }, > + [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 }, > + [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 }, > + [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 }, > + [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 }, > + [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 }, > + [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 }, > + [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 }, > + [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 }, > + [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 }, > + [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 }, > + [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 }, > + [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 }, > + [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 }, > + [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 }, > + [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 }, > + [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 }, > + [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 }, > + [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 }, > + [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 }, > + [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 }, > + [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 }, > + [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 }, > + [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 }, > + [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 }, > + [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 }, > + [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 }, > + [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 }, > + [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 }, > + [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 }, > + [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 }, > + [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 }, > + [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 }, > + [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 }, > + [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 }, > + [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 }, > + [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 }, > + [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 }, > + [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 }, > + [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 }, > + [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 }, > + [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 }, > + [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 }, > + [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 }, > + [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 }, > + [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 }, > + [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 }, > + [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 }, > + [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 }, > + [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 }, > + [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 }, > + [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 }, > +}; > + > +static const struct qcom_rpm_data msm8960_template = { > + .version = 3, > + .resource_table = msm8960_rpm_resource_table, > + .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table), > +}; > + > +static const struct of_device_id qcom_rpm_of_match[] = { > + { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template }, > + { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template }, > + { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, qcom_rpm_of_match); > + > +int qcom_rpm_write(struct qcom_rpm *rpm, > + int state, > + int resource, > + u32 *buf, size_t count) > +{ > + const struct qcom_rpm_resource *res; > + const struct qcom_rpm_data *data = rpm->data; > + u32 sel_mask[RPM_SELECT_SIZE] = { 0 }; > + int left; > + int ret = 0; > + int i; > + > + if (WARN_ON(resource < 0 || resource >= data->n_resources)) > + return -EINVAL; > + > + res = &data->resource_table[resource]; > + if (WARN_ON(res->size != count)) > + return -EINVAL; > + > + mutex_lock(&rpm->lock); > + > + for (i = 0; i < res->size; i++) > + writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i)); > + > + bitmap_set((unsigned long *)sel_mask, res->select_id, 1); > + for (i = 0; i < ARRAY_SIZE(sel_mask); i++) { > + writel_relaxed(sel_mask[i], > + RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i)); > + } > + > + writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT)); > + > + reinit_completion(&rpm->ack); > + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit)); > + > + left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT); > + if (!left) > + ret = -ETIMEDOUT; > + else if (rpm->ack_status & RPM_REJECTED) > + ret = -EIO; > + > + mutex_unlock(&rpm->lock); > + > + return ret; > +} > +EXPORT_SYMBOL(qcom_rpm_write); > + > +static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev) > +{ > + struct qcom_rpm *rpm = dev; > + u32 ack; > + int i; > + > + ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT)); > + for (i = 0; i < RPM_SELECT_SIZE; i++) > + writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i)); > + writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT)); > + > + if (ack & RPM_NOTIFICATION) { > + dev_warn(rpm->dev, "ignoring notification!\n"); > + } else { > + rpm->ack_status = ack; > + complete(&rpm->ack); > + } > + > + return IRQ_HANDLED; > +} > + > +static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev) > +{ > + struct qcom_rpm *rpm = dev; > + > + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit)); > + dev_err(rpm->dev, "RPM triggered fatal error\n"); > + > + return IRQ_HANDLED; > +} > + > +static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev) > +{ > + return IRQ_HANDLED; > +} > + > +static int qcom_rpm_probe(struct platform_device *pdev) > +{ > + const struct of_device_id *match; > + struct device_node *syscon_np; > + struct resource *res; > + struct qcom_rpm *rpm; > + u32 fw_version[3]; > + int irq_wakeup; > + int irq_ack; > + int irq_err; > + int ret; > + > + rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL); > + if (!rpm) > + return -ENOMEM; > + > + rpm->dev = &pdev->dev; > + mutex_init(&rpm->lock); > + init_completion(&rpm->ack); > + > + irq_ack = platform_get_irq_byname(pdev, "ack"); > + if (irq_ack < 0) { > + dev_err(&pdev->dev, "required ack interrupt missing\n"); > + return irq_ack; > + } > + > + irq_err = platform_get_irq_byname(pdev, "err"); > + if (irq_err < 0) { > + dev_err(&pdev->dev, "required err interrupt missing\n"); > + return irq_err; > + } > + > + irq_wakeup = platform_get_irq_byname(pdev, "wakeup"); > + if (irq_wakeup < 0) { > + dev_err(&pdev->dev, "required wakeup interrupt missing\n"); > + return irq_wakeup; > + } > + > + match = of_match_device(qcom_rpm_of_match, &pdev->dev); > + rpm->data = match->data; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + rpm->status_regs = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(rpm->status_regs)) > + return PTR_ERR(rpm->status_regs); > + rpm->ctrl_regs = rpm->status_regs + 0x400; > + rpm->req_regs = rpm->status_regs + 0x600; > + > + syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0); > + if (!syscon_np) { > + dev_err(&pdev->dev, "no qcom,ipc node\n"); > + return -ENODEV; > + } > + > + rpm->ipc_regmap = syscon_node_to_regmap(syscon_np); > + if (IS_ERR(rpm->ipc_regmap)) > + return PTR_ERR(rpm->ipc_regmap); > + > + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1, > + &rpm->ipc_offset); > + if (ret < 0) { > + dev_err(&pdev->dev, "no offset in qcom,ipc\n"); > + return -EINVAL; > + } > + > + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2, > + &rpm->ipc_bit); > + if (ret < 0) { > + dev_err(&pdev->dev, "no bit in qcom,ipc\n"); > + return -EINVAL; > + } > + > + dev_set_drvdata(&pdev->dev, rpm); > + > + fw_version[0] = readl(RPM_STATUS_REG(rpm, 0)); > + fw_version[1] = readl(RPM_STATUS_REG(rpm, 1)); > + fw_version[2] = readl(RPM_STATUS_REG(rpm, 2)); > + if (fw_version[0] != rpm->data->version) { > + dev_err(&pdev->dev, > + "RPM version %u.%u.%u incompatible with driver version %u", > + fw_version[0], > + fw_version[1], > + fw_version[2], > + rpm->data->version); > + return -EFAULT; > + } > + > + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0], > + fw_version[1], > + fw_version[2]); > + > + ret = devm_request_irq(&pdev->dev, > + irq_ack, > + qcom_rpm_ack_interrupt, > + IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND, > + "qcom_rpm_ack", > + rpm); > + if (ret) { > + dev_err(&pdev->dev, "failed to request ack interrupt\n"); > + return ret; > + } > + > + ret = irq_set_irq_wake(irq_ack, 1); > + if (ret) > + dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n"); > + > + ret = devm_request_irq(&pdev->dev, > + irq_err, > + qcom_rpm_err_interrupt, > + IRQF_TRIGGER_RISING, > + "qcom_rpm_err", > + rpm); > + if (ret) { > + dev_err(&pdev->dev, "failed to request err interrupt\n"); > + return ret; > + } > + > + ret = devm_request_irq(&pdev->dev, > + irq_wakeup, > + qcom_rpm_wakeup_interrupt, > + IRQF_TRIGGER_RISING, > + "qcom_rpm_wakeup", > + rpm); > + if (ret) { > + dev_err(&pdev->dev, "failed to request wakeup interrupt\n"); > + return ret; > + } > + > + ret = irq_set_irq_wake(irq_wakeup, 1); > + if (ret) > + dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n"); > + > + return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); > +} > + > +static int qcom_rpm_remove(struct platform_device *pdev) > +{ > + of_platform_depopulate(&pdev->dev); > + return 0; > +} > + > +static struct platform_driver qcom_rpm_driver = { > + .probe = qcom_rpm_probe, > + .remove = qcom_rpm_remove, > + .driver = { > + .name = "qcom_rpm", > + .of_match_table = qcom_rpm_of_match, > + }, > +}; > + > +static int __init qcom_rpm_init(void) > +{ > + return platform_driver_register(&qcom_rpm_driver); > +} > +arch_initcall(qcom_rpm_init); > + > +static void __exit qcom_rpm_exit(void) > +{ > + platform_driver_unregister(&qcom_rpm_driver); > +} > +module_exit(qcom_rpm_exit) > + > +MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver"); > +MODULE_LICENSE("GPL v2"); > +MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>"); > diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h > new file mode 100644 > index 0000000..742ebf1 > --- /dev/null > +++ b/include/linux/mfd/qcom_rpm.h > @@ -0,0 +1,13 @@ > +#ifndef __QCOM_RPM_H__ > +#define __QCOM_RPM_H__ > + > +#include <linux/types.h> > + > +struct qcom_rpm; > + > +#define QCOM_RPM_ACTIVE_STATE 0 > +#define QCOM_RPM_SLEEP_STATE 1 > + > +int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count); > + > +#endif
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1456ea7..b6bcb79 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -567,6 +567,20 @@ config MFD_PM8921_CORE Say M here if you want to include support for PM8921 chip as a module. This will build a module called "pm8921-core". +config MFD_QCOM_RPM + tristate "Qualcomm Resource Power Manager (RPM)" + depends on ARCH_QCOM && OF + help + If you say yes to this option, support will be included for the + Resource Power Manager system found in the Qualcomm 8660, 8960 and + 8064 based devices. + + This is required to access many regulators, clocks and bus + frequencies controlled by the RPM on these devices. + + Say M here if you want to include support for the Qualcomm RPM as a + module. This will build a module called "qcom_rpm". + config MFD_SPMI_PMIC tristate "Qualcomm SPMI PMICs" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8bd54b1..3364bbc 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o +obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_TPS65090) += tps65090.o diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c new file mode 100644 index 0000000..f696328 --- /dev/null +++ b/drivers/mfd/qcom_rpm.c @@ -0,0 +1,581 @@ +/* + * Copyright (c) 2014, Sony Mobile Communications AB. + * Copyright (c) 2013, The Linux Foundation. All rights reserved. + * Author: Bjorn Andersson <bjorn.andersson@sonymobile.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 and + * only version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of_platform.h> +#include <linux/io.h> +#include <linux/interrupt.h> +#include <linux/mfd/qcom_rpm.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> + +#include <dt-bindings/mfd/qcom-rpm.h> + +struct qcom_rpm_resource { + unsigned target_id; + unsigned status_id; + unsigned select_id; + unsigned size; +}; + +struct qcom_rpm_data { + u32 version; + const struct qcom_rpm_resource *resource_table; + unsigned n_resources; +}; + +struct qcom_rpm { + struct device *dev; + struct regmap *ipc_regmap; + unsigned ipc_offset; + unsigned ipc_bit; + + struct completion ack; + struct mutex lock; + + void __iomem *status_regs; + void __iomem *ctrl_regs; + void __iomem *req_regs; + + u32 ack_status; + + const struct qcom_rpm_data *data; +}; + +#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4) +#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4) +#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4) + +#define RPM_REQUEST_TIMEOUT (5 * HZ) + +#define RPM_REQUEST_CONTEXT 3 +#define RPM_REQ_SELECT 11 +#define RPM_ACK_CONTEXT 15 +#define RPM_ACK_SELECTOR 23 +#define RPM_SELECT_SIZE 7 + +#define RPM_NOTIFICATION BIT(30) +#define RPM_REJECTED BIT(31) + +#define RPM_SIGNAL BIT(2) + +static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = { + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 }, + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 }, + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 }, + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 }, + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 }, + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 }, + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 }, + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 }, + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 }, + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 }, + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 }, + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 }, + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 }, + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 }, + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 }, + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 }, + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 }, + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 }, + [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 }, + [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 }, + [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 }, + [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 }, + [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 }, + [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 }, + [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 }, + [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 }, + [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 }, + [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 }, + [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 }, + [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 }, + [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 }, + [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 }, + [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 }, + [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 }, + [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 }, + [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 }, + [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 }, + [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 }, + [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 }, + [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 }, + [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 }, + [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 }, + [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 }, + [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 }, + [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 }, + [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 }, + [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 }, + [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 }, + [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 }, + [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 }, + [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 }, + [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 }, + [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 }, + [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 }, + [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 }, + [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 }, + [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 }, + [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 }, + [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 }, + [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 }, + [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 }, + [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 }, + [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 }, + [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 }, + [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 }, + [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 }, + [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 }, + [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 }, + [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 }, + [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 }, + [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 }, + [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 }, + [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 }, + [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 }, + [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 }, + [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 }, + [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 }, +}; + +static const struct qcom_rpm_data apq8064_template = { + .version = 3, + .resource_table = apq8064_rpm_resource_table, + .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table), +}; + +static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = { + [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 }, + [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 }, + [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 }, + [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 }, + [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 }, + [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 }, + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 }, + [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 }, + [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 }, + [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 }, + [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 }, + [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 }, + [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 }, + [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 }, + [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 }, + [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 }, + [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 }, + [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 }, + [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 }, + [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 }, + [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 }, + [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 }, + [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 }, + [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 }, + [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 }, + [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 }, + [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 }, + [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 }, + [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 }, + [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 }, + [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 }, + [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 }, + [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 }, + [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 }, + [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 }, + [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 }, + [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 }, + [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 }, + [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 }, + [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 }, + [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 }, + [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 }, + [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 }, + [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 }, + [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 }, + [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 }, + [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 }, + [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 }, + [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 }, + [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 }, + [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 }, + [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 }, + [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 }, + [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 }, + [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 }, + [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 }, + [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 }, + [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 }, + [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 }, + [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 }, + [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 }, + [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 }, + [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 }, + [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 }, + [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 }, + [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 }, + [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 }, + [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 }, + [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 }, + [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 }, + [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 }, + [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 }, + [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 }, + [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 }, +}; + +static const struct qcom_rpm_data msm8660_template = { + .version = 2, + .resource_table = msm8660_rpm_resource_table, + .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table), +}; + +static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = { + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 }, + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 }, + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 }, + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 }, + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 }, + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 }, + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 }, + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 }, + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 }, + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 }, + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 }, + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 }, + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 }, + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 }, + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 }, + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 }, + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 }, + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 }, + [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 }, + [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 }, + [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 }, + [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 }, + [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 }, + [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 }, + [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 }, + [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 }, + [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 }, + [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 }, + [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 }, + [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 }, + [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 }, + [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 }, + [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 }, + [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 }, + [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 }, + [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 }, + [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 }, + [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 }, + [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 }, + [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 }, + [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 }, + [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 }, + [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 }, + [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 }, + [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 }, + [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 }, + [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 }, + [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 }, + [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 }, + [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 }, + [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 }, + [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 }, + [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 }, + [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 }, + [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 }, + [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 }, + [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 }, + [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 }, + [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 }, + [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 }, + [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 }, + [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 }, + [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 }, + [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 }, + [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 }, + [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 }, + [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 }, + [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 }, + [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 }, + [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 }, + [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 }, + [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 }, + [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 }, +}; + +static const struct qcom_rpm_data msm8960_template = { + .version = 3, + .resource_table = msm8960_rpm_resource_table, + .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table), +}; + +static const struct of_device_id qcom_rpm_of_match[] = { + { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template }, + { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template }, + { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template }, + { } +}; +MODULE_DEVICE_TABLE(of, qcom_rpm_of_match); + +int qcom_rpm_write(struct qcom_rpm *rpm, + int state, + int resource, + u32 *buf, size_t count) +{ + const struct qcom_rpm_resource *res; + const struct qcom_rpm_data *data = rpm->data; + u32 sel_mask[RPM_SELECT_SIZE] = { 0 }; + int left; + int ret = 0; + int i; + + if (WARN_ON(resource < 0 || resource >= data->n_resources)) + return -EINVAL; + + res = &data->resource_table[resource]; + if (WARN_ON(res->size != count)) + return -EINVAL; + + mutex_lock(&rpm->lock); + + for (i = 0; i < res->size; i++) + writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i)); + + bitmap_set((unsigned long *)sel_mask, res->select_id, 1); + for (i = 0; i < ARRAY_SIZE(sel_mask); i++) { + writel_relaxed(sel_mask[i], + RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i)); + } + + writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT)); + + reinit_completion(&rpm->ack); + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit)); + + left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT); + if (!left) + ret = -ETIMEDOUT; + else if (rpm->ack_status & RPM_REJECTED) + ret = -EIO; + + mutex_unlock(&rpm->lock); + + return ret; +} +EXPORT_SYMBOL(qcom_rpm_write); + +static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev) +{ + struct qcom_rpm *rpm = dev; + u32 ack; + int i; + + ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT)); + for (i = 0; i < RPM_SELECT_SIZE; i++) + writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i)); + writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT)); + + if (ack & RPM_NOTIFICATION) { + dev_warn(rpm->dev, "ignoring notification!\n"); + } else { + rpm->ack_status = ack; + complete(&rpm->ack); + } + + return IRQ_HANDLED; +} + +static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev) +{ + struct qcom_rpm *rpm = dev; + + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit)); + dev_err(rpm->dev, "RPM triggered fatal error\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev) +{ + return IRQ_HANDLED; +} + +static int qcom_rpm_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + struct device_node *syscon_np; + struct resource *res; + struct qcom_rpm *rpm; + u32 fw_version[3]; + int irq_wakeup; + int irq_ack; + int irq_err; + int ret; + + rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL); + if (!rpm) + return -ENOMEM; + + rpm->dev = &pdev->dev; + mutex_init(&rpm->lock); + init_completion(&rpm->ack); + + irq_ack = platform_get_irq_byname(pdev, "ack"); + if (irq_ack < 0) { + dev_err(&pdev->dev, "required ack interrupt missing\n"); + return irq_ack; + } + + irq_err = platform_get_irq_byname(pdev, "err"); + if (irq_err < 0) { + dev_err(&pdev->dev, "required err interrupt missing\n"); + return irq_err; + } + + irq_wakeup = platform_get_irq_byname(pdev, "wakeup"); + if (irq_wakeup < 0) { + dev_err(&pdev->dev, "required wakeup interrupt missing\n"); + return irq_wakeup; + } + + match = of_match_device(qcom_rpm_of_match, &pdev->dev); + rpm->data = match->data; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + rpm->status_regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(rpm->status_regs)) + return PTR_ERR(rpm->status_regs); + rpm->ctrl_regs = rpm->status_regs + 0x400; + rpm->req_regs = rpm->status_regs + 0x600; + + syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0); + if (!syscon_np) { + dev_err(&pdev->dev, "no qcom,ipc node\n"); + return -ENODEV; + } + + rpm->ipc_regmap = syscon_node_to_regmap(syscon_np); + if (IS_ERR(rpm->ipc_regmap)) + return PTR_ERR(rpm->ipc_regmap); + + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1, + &rpm->ipc_offset); + if (ret < 0) { + dev_err(&pdev->dev, "no offset in qcom,ipc\n"); + return -EINVAL; + } + + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2, + &rpm->ipc_bit); + if (ret < 0) { + dev_err(&pdev->dev, "no bit in qcom,ipc\n"); + return -EINVAL; + } + + dev_set_drvdata(&pdev->dev, rpm); + + fw_version[0] = readl(RPM_STATUS_REG(rpm, 0)); + fw_version[1] = readl(RPM_STATUS_REG(rpm, 1)); + fw_version[2] = readl(RPM_STATUS_REG(rpm, 2)); + if (fw_version[0] != rpm->data->version) { + dev_err(&pdev->dev, + "RPM version %u.%u.%u incompatible with driver version %u", + fw_version[0], + fw_version[1], + fw_version[2], + rpm->data->version); + return -EFAULT; + } + + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0], + fw_version[1], + fw_version[2]); + + ret = devm_request_irq(&pdev->dev, + irq_ack, + qcom_rpm_ack_interrupt, + IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND, + "qcom_rpm_ack", + rpm); + if (ret) { + dev_err(&pdev->dev, "failed to request ack interrupt\n"); + return ret; + } + + ret = irq_set_irq_wake(irq_ack, 1); + if (ret) + dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n"); + + ret = devm_request_irq(&pdev->dev, + irq_err, + qcom_rpm_err_interrupt, + IRQF_TRIGGER_RISING, + "qcom_rpm_err", + rpm); + if (ret) { + dev_err(&pdev->dev, "failed to request err interrupt\n"); + return ret; + } + + ret = devm_request_irq(&pdev->dev, + irq_wakeup, + qcom_rpm_wakeup_interrupt, + IRQF_TRIGGER_RISING, + "qcom_rpm_wakeup", + rpm); + if (ret) { + dev_err(&pdev->dev, "failed to request wakeup interrupt\n"); + return ret; + } + + ret = irq_set_irq_wake(irq_wakeup, 1); + if (ret) + dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n"); + + return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); +} + +static int qcom_rpm_remove(struct platform_device *pdev) +{ + of_platform_depopulate(&pdev->dev); + return 0; +} + +static struct platform_driver qcom_rpm_driver = { + .probe = qcom_rpm_probe, + .remove = qcom_rpm_remove, + .driver = { + .name = "qcom_rpm", + .of_match_table = qcom_rpm_of_match, + }, +}; + +static int __init qcom_rpm_init(void) +{ + return platform_driver_register(&qcom_rpm_driver); +} +arch_initcall(qcom_rpm_init); + +static void __exit qcom_rpm_exit(void) +{ + platform_driver_unregister(&qcom_rpm_driver); +} +module_exit(qcom_rpm_exit) + +MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>"); diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h new file mode 100644 index 0000000..742ebf1 --- /dev/null +++ b/include/linux/mfd/qcom_rpm.h @@ -0,0 +1,13 @@ +#ifndef __QCOM_RPM_H__ +#define __QCOM_RPM_H__ + +#include <linux/types.h> + +struct qcom_rpm; + +#define QCOM_RPM_ACTIVE_STATE 0 +#define QCOM_RPM_SLEEP_STATE 1 + +int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count); + +#endif
Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960 and 8064 based devices. The driver exposes resources that child drivers can operate on; to implementing regulator, clock and bus frequency drivers. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> --- Lee, since your Acked-by earlier I've folded in the part of the RFC where I add an extra parameter to qcom_rpm_write(). Part of that this is unchanged. drivers/mfd/Kconfig | 14 ++ drivers/mfd/Makefile | 1 + drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/qcom_rpm.h | 13 + 4 files changed, 609 insertions(+) create mode 100644 drivers/mfd/qcom_rpm.c create mode 100644 include/linux/mfd/qcom_rpm.h