From 83dda228866eb2e30bff2fc7a4192872f61fe900 Mon Sep 17 00:00:00 2001 From: Sean Paul Date: Mon, 17 Jun 2019 16:12:49 -0400 Subject: [PATCH] drm/msm/dsi_pll_10nm: Release clk hw on destroy and failure The 10nm pll driver didn't have any failure-path cleanup in register, and the destroy function didn't unregister any of the hardware. This patch adds both. The reason things haven't been blowing up horribly is that msm_drv has a reference count issue that keeps devices alive, so the destroy function was never called. That will be fixed in a follow-up patch. Reviewed-by: Rob Clark Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20190617201301.133275-1-sean@poorly.run --- drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c | 103 ++++++++++++++++++++--------- 1 file changed, 73 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c index aabab63..618b498 100644 --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c @@ -104,8 +104,13 @@ struct dsi_pll_10nm { struct dsi_pll_regs reg_setup; /* private clocks: */ - struct clk_hw *hws[NUM_DSI_CLOCKS_MAX]; - u32 num_hws; + struct clk_hw *out_div_clk_hw; + struct clk_hw *bit_clk_hw; + struct clk_hw *byte_clk_hw; + struct clk_hw *by_2_bit_clk_hw; + struct clk_hw *post_out_div_clk_hw; + struct clk_hw *pclk_mux_hw; + struct clk_hw *out_dsiclk_hw; /* clock-provider: */ struct clk_hw_onecell_data *hw_data; @@ -617,8 +622,19 @@ static int dsi_pll_10nm_get_provider(struct msm_dsi_pll *pll, static void dsi_pll_10nm_destroy(struct msm_dsi_pll *pll) { struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll); + struct device *dev = &pll_10nm->pdev->dev; DBG("DSI PLL%d", pll_10nm->id); + of_clk_del_provider(dev->of_node); + + clk_hw_unregister_divider(pll_10nm->out_dsiclk_hw); + clk_hw_unregister_mux(pll_10nm->pclk_mux_hw); + clk_hw_unregister_fixed_factor(pll_10nm->post_out_div_clk_hw); + clk_hw_unregister_fixed_factor(pll_10nm->by_2_bit_clk_hw); + clk_hw_unregister_fixed_factor(pll_10nm->byte_clk_hw); + clk_hw_unregister_divider(pll_10nm->bit_clk_hw); + clk_hw_unregister_divider(pll_10nm->out_div_clk_hw); + clk_hw_unregister(&pll_10nm->base.clk_hw); } /* @@ -639,10 +655,8 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) .ops = &clk_ops_dsi_pll_10nm_vco, }; struct device *dev = &pll_10nm->pdev->dev; - struct clk_hw **hws = pll_10nm->hws; struct clk_hw_onecell_data *hw_data; struct clk_hw *hw; - int num = 0; int ret; DBG("DSI%d", pll_10nm->id); @@ -660,8 +674,6 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) if (ret) return ret; - hws[num++] = &pll_10nm->base.clk_hw; - snprintf(clk_name, 32, "dsi%d_pll_out_div_clk", pll_10nm->id); snprintf(parent, 32, "dsi%dvco_clk", pll_10nm->id); @@ -670,10 +682,12 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) pll_10nm->mmio + REG_DSI_10nm_PHY_PLL_PLL_OUTDIV_RATE, 0, 2, CLK_DIVIDER_POWER_OF_TWO, NULL); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_base_clk_hw; + } - hws[num++] = hw; + pll_10nm->out_div_clk_hw = hw; snprintf(clk_name, 32, "dsi%d_pll_bit_clk", pll_10nm->id); snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_10nm->id); @@ -685,10 +699,12 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) REG_DSI_10nm_PHY_CMN_CLK_CFG0, 0, 4, CLK_DIVIDER_ONE_BASED, &pll_10nm->postdiv_lock); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_out_div_clk_hw; + } - hws[num++] = hw; + pll_10nm->bit_clk_hw = hw; snprintf(clk_name, 32, "dsi%d_phy_pll_out_byteclk", pll_10nm->id); snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_10nm->id); @@ -696,10 +712,12 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) /* DSI Byte clock = VCO_CLK / OUT_DIV / BIT_DIV / 8 */ hw = clk_hw_register_fixed_factor(dev, clk_name, parent, CLK_SET_RATE_PARENT, 1, 8); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_bit_clk_hw; + } - hws[num++] = hw; + pll_10nm->byte_clk_hw = hw; hw_data->hws[DSI_BYTE_PLL_CLK] = hw; snprintf(clk_name, 32, "dsi%d_pll_by_2_bit_clk", pll_10nm->id); @@ -707,20 +725,24 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) hw = clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 1, 2); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_byte_clk_hw; + } - hws[num++] = hw; + pll_10nm->by_2_bit_clk_hw = hw; snprintf(clk_name, 32, "dsi%d_pll_post_out_div_clk", pll_10nm->id); snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_10nm->id); hw = clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 1, 4); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_by_2_bit_clk_hw; + } - hws[num++] = hw; + pll_10nm->post_out_div_clk_hw = hw; snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_10nm->id); snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_10nm->id); @@ -734,10 +756,12 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) }, 4, 0, pll_10nm->phy_cmn_mmio + REG_DSI_10nm_PHY_CMN_CLK_CFG1, 0, 2, 0, NULL); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_post_out_div_clk_hw; + } - hws[num++] = hw; + pll_10nm->pclk_mux_hw = hw; snprintf(clk_name, 32, "dsi%d_phy_pll_out_dsiclk", pll_10nm->id); snprintf(parent, 32, "dsi%d_pclk_mux", pll_10nm->id); @@ -748,14 +772,14 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) REG_DSI_10nm_PHY_CMN_CLK_CFG0, 4, 4, CLK_DIVIDER_ONE_BASED, &pll_10nm->postdiv_lock); - if (IS_ERR(hw)) - return PTR_ERR(hw); + if (IS_ERR(hw)) { + ret = PTR_ERR(hw); + goto err_pclk_mux_hw; + } - hws[num++] = hw; + pll_10nm->out_dsiclk_hw = hw; hw_data->hws[DSI_PIXEL_PLL_CLK] = hw; - pll_10nm->num_hws = num; - hw_data->num = NUM_PROVIDED_CLKS; pll_10nm->hw_data = hw_data; @@ -763,10 +787,29 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm) pll_10nm->hw_data); if (ret) { DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret); - return ret; + goto err_dsiclk_hw; } return 0; + +err_dsiclk_hw: + clk_hw_unregister_divider(pll_10nm->out_dsiclk_hw); +err_pclk_mux_hw: + clk_hw_unregister_mux(pll_10nm->pclk_mux_hw); +err_post_out_div_clk_hw: + clk_hw_unregister_fixed_factor(pll_10nm->post_out_div_clk_hw); +err_by_2_bit_clk_hw: + clk_hw_unregister_fixed_factor(pll_10nm->by_2_bit_clk_hw); +err_byte_clk_hw: + clk_hw_unregister_fixed_factor(pll_10nm->byte_clk_hw); +err_bit_clk_hw: + clk_hw_unregister_divider(pll_10nm->bit_clk_hw); +err_out_div_clk_hw: + clk_hw_unregister_divider(pll_10nm->out_div_clk_hw); +err_base_clk_hw: + clk_hw_unregister(&pll_10nm->base.clk_hw); + + return ret; } struct msm_dsi_pll *msm_dsi_pll_10nm_init(struct platform_device *pdev, int id) -- 2.7.4