diff options
Diffstat (limited to 'drivers/reset/reset-uniphier-glue.c')
| -rw-r--r-- | drivers/reset/reset-uniphier-glue.c | 85 |
1 files changed, 33 insertions, 52 deletions
diff --git a/drivers/reset/reset-uniphier-glue.c b/drivers/reset/reset-uniphier-glue.c index a45923f4df6d..a2a262bf6bfc 100644 --- a/drivers/reset/reset-uniphier-glue.c +++ b/drivers/reset/reset-uniphier-glue.c @@ -6,11 +6,10 @@ #include <linux/clk.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/reset.h> - -#include "reset-simple.h" +#include <linux/reset/reset-simple.h> #define MAX_CLKS 2 #define MAX_RSTS 2 @@ -24,19 +23,24 @@ struct uniphier_glue_reset_soc_data { struct uniphier_glue_reset_priv { struct clk_bulk_data clk[MAX_CLKS]; - struct reset_control *rst[MAX_RSTS]; + struct reset_control_bulk_data rst[MAX_RSTS]; struct reset_simple_data rdata; const struct uniphier_glue_reset_soc_data *data; }; +static void uniphier_clk_disable(void *_priv) +{ + struct uniphier_glue_reset_priv *priv = _priv; + + clk_bulk_disable_unprepare(priv->data->nclks, priv->clk); +} + static int uniphier_glue_reset_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct uniphier_glue_reset_priv *priv; struct resource *res; - resource_size_t size; - const char *name; - int i, ret, nr; + int i, ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -47,9 +51,7 @@ static int uniphier_glue_reset_probe(struct platform_device *pdev) priv->data->nrsts > MAX_RSTS)) return -EINVAL; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - size = resource_size(res); - priv->rdata.membase = devm_ioremap_resource(dev, res); + priv->rdata.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(priv->rdata.membase)) return PTR_ERR(priv->rdata.membase); @@ -59,58 +61,30 @@ static int uniphier_glue_reset_probe(struct platform_device *pdev) if (ret) return ret; - for (i = 0; i < priv->data->nrsts; i++) { - name = priv->data->reset_names[i]; - priv->rst[i] = devm_reset_control_get_shared(dev, name); - if (IS_ERR(priv->rst[i])) - return PTR_ERR(priv->rst[i]); - } - ret = clk_bulk_prepare_enable(priv->data->nclks, priv->clk); if (ret) return ret; - for (nr = 0; nr < priv->data->nrsts; nr++) { - ret = reset_control_deassert(priv->rst[nr]); - if (ret) - goto out_rst_assert; - } + ret = devm_add_action_or_reset(dev, uniphier_clk_disable, priv); + if (ret) + return ret; + + for (i = 0; i < priv->data->nrsts; i++) + priv->rst[i].id = priv->data->reset_names[i]; + ret = devm_reset_control_bulk_get_shared_deasserted(dev, + priv->data->nrsts, + priv->rst); + if (ret) + return ret; spin_lock_init(&priv->rdata.lock); priv->rdata.rcdev.owner = THIS_MODULE; - priv->rdata.rcdev.nr_resets = size * BITS_PER_BYTE; + priv->rdata.rcdev.nr_resets = resource_size(res) * BITS_PER_BYTE; priv->rdata.rcdev.ops = &reset_simple_ops; priv->rdata.rcdev.of_node = dev->of_node; priv->rdata.active_low = true; - platform_set_drvdata(pdev, priv); - - ret = devm_reset_controller_register(dev, &priv->rdata.rcdev); - if (ret) - goto out_rst_assert; - - return 0; - -out_rst_assert: - while (nr--) - reset_control_assert(priv->rst[nr]); - - clk_bulk_disable_unprepare(priv->data->nclks, priv->clk); - - return ret; -} - -static int uniphier_glue_reset_remove(struct platform_device *pdev) -{ - struct uniphier_glue_reset_priv *priv = platform_get_drvdata(pdev); - int i; - - for (i = 0; i < priv->data->nrsts; i++) - reset_control_assert(priv->rst[i]); - - clk_bulk_disable_unprepare(priv->data->nclks, priv->clk); - - return 0; + return devm_reset_controller_register(dev, &priv->rdata.rcdev); } static const char * const uniphier_pro4_clock_reset_names[] = { @@ -141,6 +115,10 @@ static const struct of_device_id uniphier_glue_reset_match[] = { .data = &uniphier_pro4_data, }, { + .compatible = "socionext,uniphier-pro5-usb3-reset", + .data = &uniphier_pro4_data, + }, + { .compatible = "socionext,uniphier-pxs2-usb3-reset", .data = &uniphier_pxs2_data, }, @@ -153,6 +131,10 @@ static const struct of_device_id uniphier_glue_reset_match[] = { .data = &uniphier_pxs2_data, }, { + .compatible = "socionext,uniphier-nx1-usb3-reset", + .data = &uniphier_pxs2_data, + }, + { .compatible = "socionext,uniphier-pro4-ahci-reset", .data = &uniphier_pro4_data, }, @@ -170,7 +152,6 @@ MODULE_DEVICE_TABLE(of, uniphier_glue_reset_match); static struct platform_driver uniphier_glue_reset_driver = { .probe = uniphier_glue_reset_probe, - .remove = uniphier_glue_reset_remove, .driver = { .name = "uniphier-glue-reset", .of_match_table = uniphier_glue_reset_match, |