From da0d098d0ecc5cb99b8367f7067b4e57604347de Mon Sep 17 00:00:00 2001 From: Kevin Huang Date: Mon, 23 Apr 2012 13:59:55 -0700 Subject: video: tegra: dsi: Ref-count pllp_out3 clock in DSI. Bug 933653 Change-Id: If7ce4dc5129782a7e3487028d2dba01c9380ba90 Signed-off-by: Kevin Huang Reviewed-on: http://git-master/r/98256 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Aleksandr Frid Reviewed-by: Animesh Kishore Reviewed-by: Yu-Huan Hsu --- drivers/video/tegra/dc/dsi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/video/tegra/dc/dsi.c') diff --git a/drivers/video/tegra/dc/dsi.c b/drivers/video/tegra/dc/dsi.c index 4b055ec529c6..def5b38b8b9d 100644 --- a/drivers/video/tegra/dc/dsi.c +++ b/drivers/video/tegra/dc/dsi.c @@ -109,6 +109,7 @@ struct tegra_dc_dsi_data { struct clk *dc_clk; struct clk *dsi_clk; + struct clk *dsi_fixed_clk; bool clk_ref; struct mutex lock; @@ -1453,6 +1454,7 @@ static void tegra_dsi_set_dsi_clk(struct tegra_dc *dc, if (!dsi->clk_ref) { dsi->clk_ref = true; clk_enable(dsi->dsi_clk); + clk_enable(dsi->dsi_fixed_clk); tegra_periph_reset_deassert(dsi->dsi_clk); } dsi->current_dsi_clk_khz = clk_get_rate(dsi->dsi_clk) / 1000; @@ -2861,6 +2863,7 @@ static int tegra_dc_dsi_init(struct tegra_dc *dc) void __iomem *base; struct clk *dc_clk = NULL; struct clk *dsi_clk = NULL; + struct clk *dsi_fixed_clk = NULL; struct tegra_dsi_out *dsi_pdata; int err; @@ -2903,8 +2906,9 @@ static int tegra_dc_dsi_init(struct tegra_dc *dc) dsi_clk = clk_get(&dc->ndev->dev, "dsib"); else dsi_clk = clk_get(&dc->ndev->dev, "dsia"); + dsi_fixed_clk = clk_get(&dc->ndev->dev, "dsi-fixed"); - if (IS_ERR_OR_NULL(dsi_clk)) { + if (IS_ERR_OR_NULL(dsi_clk) || IS_ERR_OR_NULL(dsi_fixed_clk)) { dev_err(&dc->ndev->dev, "dsi: can't get clock\n"); err = -EBUSY; goto err_release_regs; @@ -2924,6 +2928,7 @@ static int tegra_dc_dsi_init(struct tegra_dc *dc) dsi->base_res = base_res; dsi->dc_clk = dc_clk; dsi->dsi_clk = dsi_clk; + dsi->dsi_fixed_clk = dsi_fixed_clk; err = tegra_dc_dsi_cp_info(dsi, dsi_pdata); if (err < 0) @@ -2937,6 +2942,7 @@ static int tegra_dc_dsi_init(struct tegra_dc *dc) err_dsi_data: err_clk_put: clk_put(dsi_clk); + clk_put(dsi_fixed_clk); err_release_regs: release_resource(base_res); err_free_dsi: @@ -3050,6 +3056,7 @@ static int tegra_dsi_deep_sleep(struct tegra_dc *dc, /* Disable dsi source clock */ clk_disable(dsi->dsi_clk); + clk_disable(dsi->dsi_fixed_clk); dsi->clk_ref = false; dsi->enabled = false; -- cgit v1.2.3