From 1861a1ffbc08ad53e1f07af8d754514298c22eb4 Mon Sep 17 00:00:00 2001 From: Yannick Fertré Date: Thu, 21 Mar 2019 09:13:53 +0100 Subject: drm/stm: dw_mipi_dsi-stm: add sleep power management MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implements system sleep power management ops. Signed-off-by: Yannick Fertré Acked-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1553156033-13792-1-git-send-email-yannick.fertre@st.com --- drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index a672b59a2226..1bef73e8c8fe 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -356,12 +356,40 @@ static int dw_mipi_dsi_stm_remove(struct platform_device *pdev) return 0; } +static int __maybe_unused dw_mipi_dsi_stm_suspend(struct device *dev) +{ + struct dw_mipi_dsi_stm *dsi = dw_mipi_dsi_stm_plat_data.priv_data; + + DRM_DEBUG_DRIVER("\n"); + + clk_disable_unprepare(dsi->pllref_clk); + + return 0; +} + +static int __maybe_unused dw_mipi_dsi_stm_resume(struct device *dev) +{ + struct dw_mipi_dsi_stm *dsi = dw_mipi_dsi_stm_plat_data.priv_data; + + DRM_DEBUG_DRIVER("\n"); + + clk_prepare_enable(dsi->pllref_clk); + + return 0; +} + +static const struct dev_pm_ops dw_mipi_dsi_stm_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dw_mipi_dsi_stm_suspend, + dw_mipi_dsi_stm_resume) +}; + static struct platform_driver dw_mipi_dsi_stm_driver = { .probe = dw_mipi_dsi_stm_probe, .remove = dw_mipi_dsi_stm_remove, .driver = { .of_match_table = dw_mipi_dsi_stm_dt_ids, .name = "stm32-display-dsi", + .pm = &dw_mipi_dsi_stm_pm_ops, }, }; -- cgit 1.4.1