From a442abbbe186e14128d18bc3e42fb0fbf1a62210 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Mon, 20 Jul 2020 22:21:59 +0800 Subject: reset: imx7: Support module build Use module_platform_driver(), add module device table, author, description and license to support module build, and CONFIG_RESET_IMX7 is changed to default 'y' ONLY for i.MX7D, other platforms need to select it in defconfig. Signed-off-by: Anson Huang Signed-off-by: Philipp Zabel --- drivers/reset/Kconfig | 5 +++-- drivers/reset/reset-imx7.c | 9 +++++++-- 2 files changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers/reset') diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index d9efbfd29646..19f9773133dd 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -65,9 +65,10 @@ config RESET_HSDK This enables the reset controller driver for HSDK board. config RESET_IMX7 - bool "i.MX7/8 Reset Driver" if COMPILE_TEST + tristate "i.MX7/8 Reset Driver" depends on HAS_IOMEM - default SOC_IMX7D || (ARM64 && ARCH_MXC) + depends on SOC_IMX7D || (ARM64 && ARCH_MXC) || COMPILE_TEST + default y if SOC_IMX7D select MFD_SYSCON help This enables the reset controller driver for i.MX7 SoCs. diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c index d170fe663210..9832033a702a 100644 --- a/drivers/reset/reset-imx7.c +++ b/drivers/reset/reset-imx7.c @@ -8,7 +8,7 @@ */ #include -#include +#include #include #include #include @@ -386,6 +386,7 @@ static const struct of_device_id imx7_reset_dt_ids[] = { { .compatible = "fsl,imx8mp-src", .data = &variant_imx8mp }, { /* sentinel */ }, }; +MODULE_DEVICE_TABLE(of, imx7_reset_dt_ids); static struct platform_driver imx7_reset_driver = { .probe = imx7_reset_probe, @@ -394,4 +395,8 @@ static struct platform_driver imx7_reset_driver = { .of_match_table = imx7_reset_dt_ids, }, }; -builtin_platform_driver(imx7_reset_driver); +module_platform_driver(imx7_reset_driver); + +MODULE_AUTHOR("Andrey Smirnov "); +MODULE_DESCRIPTION("NXP i.MX7 reset driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3 From 552f388bbe1ffe486f89d8b97cf19e79dbe55b5e Mon Sep 17 00:00:00 2001 From: Sai Krishna Potthuri Date: Wed, 22 Jul 2020 12:46:05 +0530 Subject: reset: reset-zynqmp: Added support for Versal platform Updated the reset driver to support Versal platform. As part of adding Versal support - Added Versal specific compatible string. - Reset Id and number of resets are different for Versal and ZynqMP, hence taken care of these two based on compatible string. Signed-off-by: Sai Krishna Potthuri Signed-off-by: Philipp Zabel --- drivers/reset/reset-zynqmp.c | 50 ++++++++++++++++++++++++++++++++++++++------ 1 file changed, 44 insertions(+), 6 deletions(-) (limited to 'drivers/reset') diff --git a/drivers/reset/reset-zynqmp.c b/drivers/reset/reset-zynqmp.c index 373ea8d4f7a1..ebd433fa09dd 100644 --- a/drivers/reset/reset-zynqmp.c +++ b/drivers/reset/reset-zynqmp.c @@ -9,12 +9,20 @@ #include #include #include +#include #define ZYNQMP_NR_RESETS (ZYNQMP_PM_RESET_END - ZYNQMP_PM_RESET_START) #define ZYNQMP_RESET_ID ZYNQMP_PM_RESET_START +#define VERSAL_NR_RESETS 95 + +struct zynqmp_reset_soc_data { + u32 reset_id; + u32 num_resets; +}; struct zynqmp_reset_data { struct reset_controller_dev rcdev; + const struct zynqmp_reset_soc_data *data; }; static inline struct zynqmp_reset_data * @@ -26,23 +34,28 @@ to_zynqmp_reset_data(struct reset_controller_dev *rcdev) static int zynqmp_reset_assert(struct reset_controller_dev *rcdev, unsigned long id) { - return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id, + struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev); + + return zynqmp_pm_reset_assert(priv->data->reset_id + id, PM_RESET_ACTION_ASSERT); } static int zynqmp_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id) { - return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id, + struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev); + + return zynqmp_pm_reset_assert(priv->data->reset_id + id, PM_RESET_ACTION_RELEASE); } static int zynqmp_reset_status(struct reset_controller_dev *rcdev, unsigned long id) { + struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev); int val, err; - err = zynqmp_pm_reset_get_status(ZYNQMP_RESET_ID + id, &val); + err = zynqmp_pm_reset_get_status(priv->data->reset_id + id, &val); if (err) return err; @@ -52,10 +65,28 @@ static int zynqmp_reset_status(struct reset_controller_dev *rcdev, static int zynqmp_reset_reset(struct reset_controller_dev *rcdev, unsigned long id) { - return zynqmp_pm_reset_assert(ZYNQMP_RESET_ID + id, + struct zynqmp_reset_data *priv = to_zynqmp_reset_data(rcdev); + + return zynqmp_pm_reset_assert(priv->data->reset_id + id, PM_RESET_ACTION_PULSE); } +static int zynqmp_reset_of_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + return reset_spec->args[0]; +} + +static const struct zynqmp_reset_soc_data zynqmp_reset_data = { + .reset_id = ZYNQMP_RESET_ID, + .num_resets = ZYNQMP_NR_RESETS, +}; + +static const struct zynqmp_reset_soc_data versal_reset_data = { + .reset_id = 0, + .num_resets = VERSAL_NR_RESETS, +}; + static const struct reset_control_ops zynqmp_reset_ops = { .reset = zynqmp_reset_reset, .assert = zynqmp_reset_assert, @@ -71,18 +102,25 @@ static int zynqmp_reset_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; + priv->data = of_device_get_match_data(&pdev->dev); + if (!priv->data) + return -EINVAL; + platform_set_drvdata(pdev, priv); priv->rcdev.ops = &zynqmp_reset_ops; priv->rcdev.owner = THIS_MODULE; priv->rcdev.of_node = pdev->dev.of_node; - priv->rcdev.nr_resets = ZYNQMP_NR_RESETS; + priv->rcdev.nr_resets = priv->data->num_resets; + priv->rcdev.of_reset_n_cells = 1; + priv->rcdev.of_xlate = zynqmp_reset_of_xlate; return devm_reset_controller_register(&pdev->dev, &priv->rcdev); } static const struct of_device_id zynqmp_reset_dt_ids[] = { - { .compatible = "xlnx,zynqmp-reset", }, + { .compatible = "xlnx,zynqmp-reset", .data = &zynqmp_reset_data, }, + { .compatible = "xlnx,versal-reset", .data = &versal_reset_data, }, { /* sentinel */ }, }; -- cgit v1.2.3 From 3315be577411d55df393fc8ab9f7a384cb90835a Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 28 Jul 2020 19:10:11 +0200 Subject: reset: Fix and extend kerneldoc Fix W=1 compile warnings (invalid kerneldoc): drivers/reset/core.c:50: warning: Function parameter or member 'array' not described in 'reset_control' drivers/reset/core.c:50: warning: Function parameter or member 'deassert_count' not described in 'reset_control' Signed-off-by: Krzysztof Kozlowski Signed-off-by: Philipp Zabel --- drivers/reset/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/reset') diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 01c0c7aa835c..a2df88e90011 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -32,7 +32,8 @@ static LIST_HEAD(reset_lookup_list); * @refcnt: Number of gets of this reset_control * @acquired: Only one reset_control may be acquired for a given rcdev and id. * @shared: Is this a shared (1), or an exclusive (0) reset_control? - * @deassert_cnt: Number of times this reset line has been deasserted + * @array: Is this an array of reset controls (1)? + * @deassert_count: Number of times this reset line has been deasserted * @triggered_count: Number of times this reset line has been reset. Currently * only used for shared resets, which means that the value * will be either 0 or 1. -- cgit v1.2.3 From f008c403270cc2b830868ec0967a3cac7f18a984 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 30 Jul 2020 14:46:09 +0800 Subject: reset: imx7: add the cm4 reset for i.MX8MQ Add the cm4 reset used by the remoteproc driver Signed-off-by: Peng Fan Signed-off-by: Philipp Zabel --- drivers/reset/reset-imx7.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/reset') diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c index 9832033a702a..b60534a1e0ef 100644 --- a/drivers/reset/reset-imx7.c +++ b/drivers/reset/reset-imx7.c @@ -178,6 +178,9 @@ static const struct imx7_src_signal imx8mq_src_signals[IMX8MQ_RESET_NUM] = { [IMX8MQ_RESET_A53_SOC_DBG_RESET] = { SRC_A53RCR0, BIT(20) }, [IMX8MQ_RESET_A53_L2RESET] = { SRC_A53RCR0, BIT(21) }, [IMX8MQ_RESET_SW_NON_SCLR_M4C_RST] = { SRC_M4RCR, BIT(0) }, + [IMX8MQ_RESET_SW_M4C_RST] = { SRC_M4RCR, BIT(1) }, + [IMX8MQ_RESET_SW_M4P_RST] = { SRC_M4RCR, BIT(2) }, + [IMX8MQ_RESET_M4_ENABLE] = { SRC_M4RCR, BIT(3) }, [IMX8MQ_RESET_OTG1_PHY_RESET] = { SRC_USBOPHY1_RCR, BIT(0) }, [IMX8MQ_RESET_OTG2_PHY_RESET] = { SRC_USBOPHY2_RCR, BIT(0) }, [IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N] = { SRC_MIPIPHY_RCR, BIT(1) }, @@ -238,6 +241,7 @@ static int imx8mq_reset_set(struct reset_controller_dev *rcdev, case IMX8MQ_RESET_MIPI_DSI_DPI_RESET_N: /* fallthrough */ case IMX8MQ_RESET_MIPI_DSI_RESET_N: /* fallthrough */ case IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N: /* fallthrough */ + case IMX8MQ_RESET_M4_ENABLE: value = assert ? 0 : bit; break; } -- cgit v1.2.3 From 68a215164e1938490c82eecccb263d30c586b84a Mon Sep 17 00:00:00 2001 From: Alain Volmat Date: Mon, 31 Aug 2020 22:38:04 +0200 Subject: reset: sti: reset-syscfg: fix struct description warnings Fix formating of struct description to avoid warning highlighted by W=1 compilation. Fixes: e5d76075d930 ("drivers: reset: STi SoC system configuration reset controller support") Signed-off-by: Alain Volmat Signed-off-by: Philipp Zabel --- drivers/reset/sti/reset-syscfg.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/reset') diff --git a/drivers/reset/sti/reset-syscfg.c b/drivers/reset/sti/reset-syscfg.c index 91215bb88f62..99b63035fe72 100644 --- a/drivers/reset/sti/reset-syscfg.c +++ b/drivers/reset/sti/reset-syscfg.c @@ -17,7 +17,7 @@ #include "reset-syscfg.h" /** - * Reset channel regmap configuration + * struct syscfg_reset_channel - Reset channel regmap configuration * * @reset: regmap field for the channel's reset bit. * @ack: regmap field for the channel's ack bit (optional). @@ -28,8 +28,9 @@ struct syscfg_reset_channel { }; /** - * A reset controller which groups together a set of related reset bits, which - * may be located in different system configuration registers. + * struct syscfg_reset_controller - A reset controller which groups together + * a set of related reset bits, which may be located in different system + * configuration registers. * * @rst: base reset controller structure. * @active_low: are the resets in this controller active low, i.e. clearing -- cgit v1.2.3