From: Benson Leung <bleung@google.com>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: olof@lixom.net, bleung@chromium.org,
linux-kernel@vger.kernel.org, lee.jones@linaro.org,
Gwendal Grignou <gwendal@chromium.org>,
Thierry Escande <thierry.escande@collabora.com>
Subject: Re: [PATCH RESEND 07/13] platform/chrome: cros_ec_lpc: Add support for GOOG004 ACPI device
Date: Thu, 22 Jun 2017 12:39:13 -0700 [thread overview]
Message-ID: <20170622193913.GB85041@decatoncale.mtv.corp.google.com> (raw)
In-Reply-To: <20170516161319.13257-8-enric.balletbo@collabora.com>
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Hi Enric and Thierry,
On Tue, May 16, 2017 at 06:13:13PM +0200, Enric Balletbo i Serra wrote:
> From: Gwendal Grignou <gwendal@chromium.org>
>
> This patch removes platform_device_register() call and adds an ACPI
> device id structure. The driver is now automatically probed for devices
> with a GOOG0004 ACPI entry.
>
> Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
Applied to what will become the immutable branch.
> ---
> drivers/platform/chrome/Kconfig | 2 +-
> drivers/platform/chrome/cros_ec_lpc.c | 23 +++++++++--------------
> 2 files changed, 10 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
> index 6d80fb5..0ad6e29 100644
> --- a/drivers/platform/chrome/Kconfig
> +++ b/drivers/platform/chrome/Kconfig
> @@ -49,7 +49,7 @@ config CROS_EC_CHARDEV
>
> config CROS_EC_LPC
> tristate "ChromeOS Embedded Controller (LPC)"
> - depends on MFD_CROS_EC && (X86 || COMPILE_TEST)
> + depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
> help
> If you say Y here, you get support for talking to the ChromeOS EC
> over an LPC bus. This uses a simple byte-level protocol with a
> diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
> index bc2dc62..90703521 100644
> --- a/drivers/platform/chrome/cros_ec_lpc.c
> +++ b/drivers/platform/chrome/cros_ec_lpc.c
> @@ -21,6 +21,7 @@
> * expensive.
> */
>
> +#include <linux/acpi.h>
> #include <linux/dmi.h>
> #include <linux/delay.h>
> #include <linux/io.h>
> @@ -32,6 +33,7 @@
> #include <linux/printk.h>
>
> #define DRV_NAME "cros_ec_lpcs"
> +#define ACPI_DRV_NAME "GOOG0004"
>
> static int ec_response_timed_out(void)
> {
> @@ -288,6 +290,12 @@ static int cros_ec_lpc_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct acpi_device_id cros_ec_lpc_acpi_device_ids[] = {
> + { ACPI_DRV_NAME, 0 },
> + { }
> +};
> +MODULE_DEVICE_TABLE(acpi, cros_ec_lpc_acpi_device_ids);
> +
> static struct dmi_system_id cros_ec_lpc_dmi_table[] __initdata = {
> {
> /*
> @@ -328,15 +336,12 @@ MODULE_DEVICE_TABLE(dmi, cros_ec_lpc_dmi_table);
> static struct platform_driver cros_ec_lpc_driver = {
> .driver = {
> .name = DRV_NAME,
> + .acpi_match_table = cros_ec_lpc_acpi_device_ids,
> },
> .probe = cros_ec_lpc_probe,
> .remove = cros_ec_lpc_remove,
> };
>
> -static struct platform_device cros_ec_lpc_device = {
> - .name = DRV_NAME
> -};
> -
> static int __init cros_ec_lpc_init(void)
> {
> int ret;
> @@ -356,21 +361,11 @@ static int __init cros_ec_lpc_init(void)
> return ret;
> }
>
> - /* Register the device, and it'll get hooked up automatically */
> - ret = platform_device_register(&cros_ec_lpc_device);
> - if (ret) {
> - pr_err(DRV_NAME ": can't register device: %d\n", ret);
> - platform_driver_unregister(&cros_ec_lpc_driver);
> - cros_ec_lpc_reg_destroy();
> - return ret;
> - }
> -
> return 0;
> }
>
> static void __exit cros_ec_lpc_exit(void)
> {
> - platform_device_unregister(&cros_ec_lpc_device);
> platform_driver_unregister(&cros_ec_lpc_driver);
> cros_ec_lpc_reg_destroy();
> }
> --
> 2.9.3
>
--
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@google.com
Chromium OS Project
bleung@chromium.org
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next prev parent reply other threads:[~2017-06-22 19:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-16 16:13 [PATCH RESEND 00/13] platform/chrome: Add console debugfs, lpc and lightbar programming support Enric Balletbo i Serra
2017-05-16 16:13 ` [PATCH RESEND 01/13] mfd: cros_ec: Add helper for event notifier Enric Balletbo i Serra
2017-06-16 20:45 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 02/13] mfd: cros_ec: Add EC console read structures definitions Enric Balletbo i Serra
2017-06-16 20:47 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 03/13] mfd: cros_ec: add debugfs, console log file Enric Balletbo i Serra
2017-06-16 19:42 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 04/13] mfd: cros_ec: Add support for dumping panic information Enric Balletbo i Serra
2017-06-22 23:38 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 05/13] platform/chrome: cros_ec_lpc: Add R/W helpers to LPC protocol variants Enric Balletbo i Serra
2017-05-22 11:09 ` Lee Jones
2017-06-22 19:02 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 06/13] platform/chrome: cros_ec_lpc: Add support for mec1322 EC Enric Balletbo i Serra
2017-05-22 11:09 ` Lee Jones
2017-06-22 19:01 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 07/13] platform/chrome: cros_ec_lpc: Add support for GOOG004 ACPI device Enric Balletbo i Serra
2017-06-22 19:39 ` Benson Leung [this message]
2017-05-16 16:13 ` [PATCH RESEND 08/13] platform/chrome: cros_ec_lpc: Add power management ops Enric Balletbo i Serra
2017-06-22 19:46 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 09/13] platform/chrome: cros_ec_lpc: Add MKBP events support over ACPI Enric Balletbo i Serra
2017-06-22 19:35 ` Benson Leung
2017-06-23 7:35 ` Thierry Escande
2017-06-23 17:54 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 10/13] platform/chrome: cros_ec_lightbar - Add lightbar program feature to sysfs Enric Balletbo i Serra
2017-06-22 23:43 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 11/13] platform/chrome: cros_ec_lightbar - Control of suspend/resume lightbar sequence Enric Balletbo i Serra
2017-06-23 22:08 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 12/13] platform/chrome: cros_ec_lightbar - Add userspace lightbar control bit to EC Enric Balletbo i Serra
2017-06-23 22:12 ` Benson Leung
2017-05-16 16:13 ` [PATCH RESEND 13/13] platform/chrome: cros_ec_lightbar - Avoid I2C xfer to EC during suspend Enric Balletbo i Serra
2017-06-23 22:22 ` Benson Leung
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