From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Georgi Djakov <georgi.djakov@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Peter De Schrijver <pdeschrijver@nvidia.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Mikko Perttunen <cyndis@kapsi.fi>
Cc: "Artur Świgoń" <a.swigon@samsung.com>,
linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
devicetree@vger.kernel.org
Subject: [PATCH v3 04/39] memory: tegra20-emc: Make driver modular
Date: Sun, 7 Jun 2020 21:54:55 +0300 [thread overview]
Message-ID: <20200607185530.18113-5-digetx@gmail.com> (raw)
In-Reply-To: <20200607185530.18113-1-digetx@gmail.com>
This patch adds modularization support to the Tegra20 EMC driver. Driver
now can be compiled as a loadable kernel module.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/memory/tegra/Kconfig | 2 +-
drivers/memory/tegra/tegra20-emc.c | 16 +++++++++++-----
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/memory/tegra/Kconfig b/drivers/memory/tegra/Kconfig
index 9f0a96bf9ccc..7e0e1ef87763 100644
--- a/drivers/memory/tegra/Kconfig
+++ b/drivers/memory/tegra/Kconfig
@@ -8,7 +8,7 @@ config TEGRA_MC
NVIDIA Tegra SoCs.
config TEGRA20_EMC
- bool "NVIDIA Tegra20 External Memory Controller driver"
+ tristate "NVIDIA Tegra20 External Memory Controller driver"
default y
depends on ARCH_TEGRA_2x_SOC
help
diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 027f46287dbf..035d9251e28a 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -724,6 +724,13 @@ static int tegra_emc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, emc);
tegra_emc_debugfs_init(emc);
+ /*
+ * Don't allow the kernel module to be unloaded. Unloading adds some
+ * extra complexity which doesn't really worth the effort in a case of
+ * this driver.
+ */
+ try_module_get(THIS_MODULE);
+
return 0;
unset_cb:
@@ -736,6 +743,7 @@ static const struct of_device_id tegra_emc_of_match[] = {
{ .compatible = "nvidia,tegra20-emc", },
{},
};
+MODULE_DEVICE_TABLE(of, tegra_emc_of_match);
static struct platform_driver tegra_emc_driver = {
.probe = tegra_emc_probe,
@@ -745,9 +753,7 @@ static struct platform_driver tegra_emc_driver = {
.suppress_bind_attrs = true,
},
};
+module_platform_driver(tegra_emc_driver);
-static int __init tegra_emc_init(void)
-{
- return platform_driver_register(&tegra_emc_driver);
-}
-subsys_initcall(tegra_emc_init);
+MODULE_DESCRIPTION("NVIDIA Tegra20 EMC driver");
+MODULE_LICENSE("GPL v2");
--
2.26.0
next prev parent reply other threads:[~2020-06-07 19:00 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-07 18:54 [PATCH v3 00/39] Introduce memory interconnect for NVIDIA Tegra SoCs Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 01/39] clk: Export clk_hw_reparent() Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 02/39] clk: tegra: Remove Memory Controller lock Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 03/39] clk: tegra: Export Tegra20 EMC kernel symbols Dmitry Osipenko
2020-06-07 18:54 ` Dmitry Osipenko [this message]
2020-06-07 18:54 ` [PATCH v3 05/39] memory: tegra30-emc: Make driver modular Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 06/39] memory: tegra124-emc: " Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 07/39] memory: tegra124-emc: Use devm_platform_ioremap_resource Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 08/39] soc/tegra: fuse: Export tegra_read_ram_code() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 09/39] memory: tegra20-emc: Initialize MC timings Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 10/39] PM / devfreq: tegra20: Silence deferred probe error Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 11/39] PM / devfreq: tegra30: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 12/39] PM / devfreq: tegra20: Use MC timings for building OPP table Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 13/39] PM / devfreq: tegra30: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 14/39] PM / devfreq: tegra20: Add error messages to tegra_devfreq_target() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 15/39] PM / devfreq: tegra30: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 16/39] PM / devfreq: tegra20: Adjust clocks conversion ratio and polling interval Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 17/39] PM / devfreq: tegra20: Relax Kconfig dependency Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 18/39] dt-bindings: memory: tegra20: mc: Document new interconnect property Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 19/39] dt-bindings: memory: tegra20: emc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 20/39] dt-bindings: memory: tegra30: mc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 21/39] dt-bindings: memory: tegra30: emc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 22/39] dt-bindings: host1x: Document new interconnect properties Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 23/39] dt-bindings: memory: tegra20: Add memory client IDs Dmitry Osipenko
2020-06-09 20:01 ` Rob Herring
2020-06-07 18:55 ` [PATCH v3 24/39] dt-bindings: memory: tegra30: " Dmitry Osipenko
2020-06-09 20:02 ` Rob Herring
2020-06-07 18:55 ` [PATCH v3 25/39] ARM: tegra: Add interconnect properties to Tegra20 device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 26/39] ARM: tegra: Add interconnect properties to Tegra30 device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 27/39] interconnect: Relax requirement in of_icc_get_from_provider() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 28/39] memory: tegra: Register as interconnect provider Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 29/39] memory: tegra20-emc: Use devm_platform_ioremap_resource Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 30/39] memory: tegra20-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 31/39] memory: tegra20-emc: Register as interconnect provider Dmitry Osipenko
2020-06-07 21:47 ` Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 32/39] memory: tegra20-emc: Create tegra20-devfreq device Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 33/39] memory: tegra30-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 34/39] memory: tegra30-emc: Register as interconnect provider Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 35/39] drm/tegra: dc: Support memory bandwidth management Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 36/39] drm/tegra: dc: Tune up high priority request controls for Tegra20 Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 37/39] drm/tegra: dc: Extend debug stats with total number of events Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 38/39] ARM: tegra: Enable interconnect API in tegra_defconfig Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 39/39] ARM: multi_v7_defconfig: Enable interconnect API Dmitry Osipenko
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