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Date: Fri, 17 Jul 2015 15:50:42 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: S Twiss <stwiss.opensource@...semi.com>
Cc: DEVICETREE <devicetree@...r.kernel.org>,
LINUXINPUT <linux-input@...r.kernel.org>,
LINUXKERNEL <linux-kernel@...r.kernel.org>,
RTCLINUX <rtc-linux@...glegroups.com>,
David Dajun Chen <david.chen@...semi.com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Lee Jones <lee.jones@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Pawel Moll <pawel.moll@....com>,
Rob Herring <robh+dt@...nel.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
Support Opensource <support.opensource@...semi.com>
Subject: Re: [PATCH RFC V1 2/3] onkey: da9063: Add DA9062 OnKey capability to
DA9063 OnKey driver
Hi Steve,
On Tue, Jul 14, 2015 at 02:07:50PM +0100, S Twiss wrote:
> From: S Twiss <stwiss.opensource@...semi.com>
>
> Add DA9062 OnKey support into the existing DA9063 OnKey driver component by
> using generic access tables for common register and bit mask definitions.
>
> The following change will add generic register and bit mask support to the
> DA9063 OnKey.
>
> The following alterations have been made to the DA9063 OnKey:
>
> - Addition of a da9063_compatible_onkey_regmap structure to hold all
> generic registers and bitmasks for this type of OnKey component.
> - Addition of an struct of_device_id table for DA9063 and DA9062
> defaults
> - Refactoring functions to use struct da9063_compatible_onkey accesses
> to generic registers/masks instead of using defines from registers.h
> - Re-work of da9063_onkey_probe() to use of_match_node() and
> dev_get_regmap() to provide initialisation of generic registers and
> masks and access to regmap
>
> Signed-off-by: Steve Twiss <stwiss.opensource@...semi.com>
Looks generally good, just a few comments.
>
> ---
> Checks performed with linux-next/next-20150708/scripts/checkpatch.pl
> Kconfig total: 0 errors, 14 warnings, 810 lines checked
> da9063_onkey.c total: 0 errors, 2 warnings, 305 lines checked
> This patch applies against linux-next and next-20150708
>
>
> drivers/input/misc/Kconfig | 6 +-
> drivers/input/misc/da9063_onkey.c | 139 ++++++++++++++++++++++++++++++--------
> 2 files changed, 112 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index d4f0a81..42860f9 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -612,10 +612,10 @@ config INPUT_DA9055_ONKEY
>
> config INPUT_DA9063_ONKEY
> tristate "Dialog DA9063 OnKey"
"Dialog DA9062/63 OnKey" maybe?
> - depends on MFD_DA9063
> + depends on MFD_DA9063 || MFD_DA9062
> help
> - Support the ONKEY of Dialog DA9063 Power Management IC as an
> - input device reporting power button statue.
> + Support the ONKEY of Dialog DA9063 and DA9062 Power Management ICs
> + as an input device capable for reporting the power button status.
>
> To compile this driver as a module, choose M here: the module
> will be called da9063_onkey.
> diff --git a/drivers/input/misc/da9063_onkey.c b/drivers/input/misc/da9063_onkey.c
> index f577585..308de2e 100644
> --- a/drivers/input/misc/da9063_onkey.c
> +++ b/drivers/input/misc/da9063_onkey.c
> @@ -1,5 +1,5 @@
> /*
> - * OnKey device driver for DA9063
> + * OnKey device driver for DA9063 and DA9062 PMICs
> * Copyright (C) 2015 Dialog Semiconductor Ltd.
> *
> * This program is free software; you can redistribute it and/or
> @@ -24,36 +24,96 @@
> #include <linux/mfd/da9063/core.h>
> #include <linux/mfd/da9063/pdata.h>
> #include <linux/mfd/da9063/registers.h>
> +#include <linux/mfd/da9062/core.h>
> +#include <linux/mfd/da9062/registers.h>
>
> -struct da9063_onkey {
> - struct da9063 *hw;
> +struct da9063_compatible_onkey_regmap {
Maybe call it da906x_chip_config?
> + /* REGS */
> + int onkey_status;
> + int onkey_pwr_signalling;
> + int onkey_fault_log;
> + int onkey_shutdown;
> + /* MASKS */
> + int onkey_nonkey_mask;
> + int onkey_nonkey_lock_mask;
> + int onkey_key_reset_mask;
> + int onkey_shutdown_mask;
> + /* NAMES */
> + char *name;
const char *?
> +};
> +
> +struct da9063_compatible_onkey {
If you did not rename the structure your diff would be smaller.
> struct delayed_work work;
> struct input_dev *input;
> struct device *dev;
> + struct regmap *regmap;
> + const struct da9063_compatible_onkey_regmap *config;
> + char phys[32];
> bool key_power;
> };
>
> +static const struct da9063_compatible_onkey_regmap da9063_regs = {
> + /* REGS */
> + .onkey_status = DA9063_REG_STATUS_A,
> + .onkey_pwr_signalling = DA9063_REG_CONTROL_B,
> + .onkey_fault_log = DA9063_REG_FAULT_LOG,
> + .onkey_shutdown = DA9063_REG_CONTROL_F,
> + /* MASKS */
> + .onkey_nonkey_mask = DA9063_NONKEY,
> + .onkey_nonkey_lock_mask = DA9063_NONKEY_LOCK,
> + .onkey_key_reset_mask = DA9063_KEY_RESET,
> + .onkey_shutdown_mask = DA9063_SHUTDOWN,
> + /* NAMES */
> + .name = DA9063_DRVNAME_ONKEY,
> +};
> +
> +static const struct da9063_compatible_onkey_regmap da9062_regs = {
> + /* REGS */
> + .onkey_status = DA9062AA_STATUS_A,
> + .onkey_pwr_signalling = DA9062AA_CONTROL_B,
> + .onkey_fault_log = DA9062AA_FAULT_LOG,
> + .onkey_shutdown = DA9062AA_CONTROL_F,
> + /* MASKS */
> + .onkey_nonkey_mask = DA9062AA_NONKEY_MASK,
> + .onkey_nonkey_lock_mask = DA9062AA_NONKEY_LOCK_MASK,
> + .onkey_key_reset_mask = DA9062AA_KEY_RESET_MASK,
> + .onkey_shutdown_mask = DA9062AA_SHUTDOWN_MASK,
> + /* NAMES */
> + .name = "da9062-onkey",
> +};
> +
> +static const struct of_device_id da9063_compatible_reg_id_table[] = {
> + { .compatible = "dlg,da9063-onkey", .data = &da9063_regs },
> + { .compatible = "dlg,da9062-onkey", .data = &da9062_regs },
> + { },
> +};
> +
> static void da9063_poll_on(struct work_struct *work)
> {
> - struct da9063_onkey *onkey = container_of(work, struct da9063_onkey,
> - work.work);
> + struct da9063_compatible_onkey *onkey = container_of(work,
> + struct da9063_compatible_onkey,
> + work.work);
> + const struct da9063_compatible_onkey_regmap *config = onkey->config;
> unsigned int val;
> int fault_log = 0;
> bool poll = true;
> int error;
>
> /* Poll to see when the pin is released */
> - error = regmap_read(onkey->hw->regmap, DA9063_REG_STATUS_A, &val);
> + error = regmap_read(onkey->regmap,
> + config->onkey_status,
> + &val);
> if (error) {
> dev_err(onkey->dev,
> "Failed to read ON status: %d\n", error);
> goto err_poll;
> }
>
> - if (!(val & DA9063_NONKEY)) {
> - error = regmap_update_bits(onkey->hw->regmap,
> - DA9063_REG_CONTROL_B,
> - DA9063_NONKEY_LOCK, 0);
> + if (!(val & config->onkey_nonkey_mask)) {
> + error = regmap_update_bits(onkey->regmap,
> + config->onkey_pwr_signalling,
> + config->onkey_nonkey_lock_mask,
> + 0);
> if (error) {
> dev_err(onkey->dev,
> "Failed to reset the Key Delay %d\n", error);
> @@ -70,15 +130,16 @@ static void da9063_poll_on(struct work_struct *work)
> * If the fault log KEY_RESET is detected, then clear it
> * and shut down the system.
> */
> - error = regmap_read(onkey->hw->regmap,
> - DA9063_REG_FAULT_LOG, &fault_log);
> + error = regmap_read(onkey->regmap,
> + config->onkey_fault_log,
> + &fault_log);
> if (error) {
> dev_warn(&onkey->input->dev,
> "Cannot read FAULT_LOG: %d\n", error);
> - } else if (fault_log & DA9063_KEY_RESET) {
> - error = regmap_write(onkey->hw->regmap,
> - DA9063_REG_FAULT_LOG,
> - DA9063_KEY_RESET);
> + } else if (fault_log & config->onkey_key_reset_mask) {
> + error = regmap_write(onkey->regmap,
> + config->onkey_fault_log,
> + config->onkey_key_reset_mask);
> if (error) {
> dev_warn(&onkey->input->dev,
> "Cannot reset KEY_RESET fault log: %d\n",
> @@ -88,10 +149,10 @@ static void da9063_poll_on(struct work_struct *work)
> * and then send shutdown command
> */
> dev_dbg(&onkey->input->dev,
> - "Sending SHUTDOWN to DA9063 ...\n");
> - error = regmap_write(onkey->hw->regmap,
> - DA9063_REG_CONTROL_F,
> - DA9063_SHUTDOWN);
> + "Sending SHUTDOWN to DA9063 ...\n");
> + error = regmap_write(onkey->regmap,
> + config->onkey_shutdown,
> + config->onkey_shutdown_mask);
> if (error)
> dev_err(&onkey->input->dev,
> "Cannot SHUTDOWN DA9063: %d\n",
> @@ -106,12 +167,15 @@ err_poll:
>
> static irqreturn_t da9063_onkey_irq_handler(int irq, void *data)
> {
> - struct da9063_onkey *onkey = data;
> + struct da9063_compatible_onkey *onkey = data;
> + const struct da9063_compatible_onkey_regmap *config = onkey->config;
> unsigned int val;
> int error;
>
> - error = regmap_read(onkey->hw->regmap, DA9063_REG_STATUS_A, &val);
> - if (onkey->key_power && !error && (val & DA9063_NONKEY)) {
> + error = regmap_read(onkey->regmap,
> + config->onkey_status,
> + &val);
> + if (onkey->key_power && !error && (val & config->onkey_nonkey_mask)) {
> input_report_key(onkey->input, KEY_POWER, 1);
> input_sync(onkey->input);
> schedule_delayed_work(&onkey->work, 0);
> @@ -129,7 +193,7 @@ static irqreturn_t da9063_onkey_irq_handler(int irq, void *data)
>
> static void da9063_cancel_poll(void *data)
> {
> - struct da9063_onkey *onkey = data;
> + struct da9063_compatible_onkey *onkey = data;
>
> cancel_delayed_work_sync(&onkey->work);
> }
> @@ -138,19 +202,31 @@ static int da9063_onkey_probe(struct platform_device *pdev)
> {
> struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
> struct da9063_pdata *pdata = dev_get_platdata(da9063->dev);
> - struct da9063_onkey *onkey;
> + struct da9063_compatible_onkey *onkey;
> + const struct of_device_id *match;
> int irq;
> int error;
>
> - onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9063_onkey),
> + match = of_match_node(da9063_compatible_reg_id_table,
> + pdev->dev.of_node);
> + if (!match)
> + return -ENXIO;
> +
> + onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9063_compatible_onkey),
> GFP_KERNEL);
> if (!onkey) {
> dev_err(&pdev->dev, "Failed to allocate memory.\n");
> return -ENOMEM;
> }
>
> + onkey->config = match->data;
> onkey->dev = &pdev->dev;
> - onkey->hw = da9063;
> +
> + onkey->regmap = dev_get_regmap(pdev->dev.parent, NULL);
> + if (!onkey->regmap) {
> + dev_err(&pdev->dev, "Parent regmap unavailable.\n");
> + return -ENXIO;
> + }
>
> if (pdata)
> onkey->key_power = pdata->key_power;
> @@ -165,8 +241,10 @@ static int da9063_onkey_probe(struct platform_device *pdev)
> return -ENOMEM;
> }
>
> - onkey->input->name = DA9063_DRVNAME_ONKEY;
> - onkey->input->phys = DA9063_DRVNAME_ONKEY "/input0";
> + onkey->input->name = onkey->config->name;
> + snprintf(onkey->phys, sizeof(onkey->phys), "%s/input0",
> + onkey->config->name);
> + onkey->input->phys = onkey->phys;
> onkey->input->dev.parent = &pdev->dev;
>
> if (onkey->key_power)
> @@ -216,11 +294,12 @@ static struct platform_driver da9063_onkey_driver = {
> .probe = da9063_onkey_probe,
> .driver = {
> .name = DA9063_DRVNAME_ONKEY,
> + .of_match_table = da9063_compatible_reg_id_table,
> },
> };
> module_platform_driver(da9063_onkey_driver);
>
> MODULE_AUTHOR("S Twiss <stwiss.opensource@...semi.com>");
> -MODULE_DESCRIPTION("Onkey device driver for Dialog DA9063");
> +MODULE_DESCRIPTION("Onkey device driver for Dialog DA9063 and DA9062");
> MODULE_LICENSE("GPL");
> MODULE_ALIAS("platform:" DA9063_DRVNAME_ONKEY);
> --
> end-of-patch for PATCH RFC V1
>
Thanks.
--
Dmitry
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