[PATCH V5 10/11] clk: imx: clk-imx8qxp-lpcg: add runtime pm support
From: Dong Aisheng <aisheng.dong@nxp.com>
Date: 2019-09-09 14:11:39
Also in:
linux-clk
Subsystem:
common clk framework, nxp i.mx clock drivers, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Abel Vesa, Linus Torvalds
add runtime pm support Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: v4->v5: * no changes v3->v4: * disable rpm when error out v3: new patch --- drivers/clk/imx/clk-imx8qxp-lpcg.c | 34 +++++++++++++++++++++++++++------- 1 file changed, 27 insertions(+), 7 deletions(-)
diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.c b/drivers/clk/imx/clk-imx8qxp-lpcg.c
index 31efc7a..f395eb5 100644
--- a/drivers/clk/imx/clk-imx8qxp-lpcg.c
+++ b/drivers/clk/imx/clk-imx8qxp-lpcg.c@@ -12,6 +12,7 @@ #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> #include "clk-scu.h"
@@ -231,26 +232,45 @@ static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev, return -EINVAL; } + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 500); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + for (i = 0; i < count; i++) { idx = bit_offset[i] / 4; if (idx > IMX_LPCG_MAX_CLKS) { dev_warn(&pdev->dev, "invalid bit offset of clock %d\n", i); - return -EINVAL; + ret = -EINVAL; + goto out; } - clk_hws[idx] = imx_clk_lpcg_scu(output_names[i], - parent_names[i], 0, base, - bit_offset[i], false); + clk_hws[idx] = imx_clk_lpcg_scu_dev(&pdev->dev, output_names[i], + parent_names[i], 0, base, + bit_offset[i], false); if (IS_ERR(clk_hws[idx])) { dev_warn(&pdev->dev, "failed to register clock %d\n", idx); - return -EINVAL; + ret = -EINVAL; + goto out; } } - return devm_of_clk_add_hw_provider(&pdev->dev, imx_lpcg_of_clk_src_get, - clk_data); + ret = devm_of_clk_add_hw_provider(&pdev->dev, imx_lpcg_of_clk_src_get, + clk_data); + if (ret) + goto out; + + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + + return 0; + +out: + pm_runtime_disable(&pdev->dev); + return ret; } static int imx8qxp_lpcg_clk_probe(struct platform_device *pdev)
--
2.7.4
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