On Tue, 24 May 2022 at 00:38, Marijn Suijten
<marijn.suijten@xxxxxxxxxxxxxx> wrote:
>
> parent_hw pointers are easier to manage and cheaper to use than
> repeatedly formatting the parent name and subsequently leaving the clk
> framework to perform lookups based on that name.
Can you please add a followup patch (or a preface one) removing the
rest of devm_kzalloc()'ed clock names.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Minor nit below.
>
> Signed-off-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
> ---
> .../gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 18 +++++++-----------
> 1 file changed, 7 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> index fc56cdcc9ad6..943a7e847c90 100644
> --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
> @@ -383,7 +383,7 @@ static int dsi_28nm_pll_restore_state(struct msm_dsi_phy *phy)
>
> static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **provided_clocks)
> {
> - char *clk_name, *parent_name, *vco_name;
> + char *clk_name, *vco_name;
> struct clk_init_data vco_init = {
> .parent_data = &(const struct clk_parent_data) {
> .fw_name = "ref",
> @@ -408,10 +408,6 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
> if (!vco_name)
> return -ENOMEM;
>
> - parent_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> - if (!parent_name)
> - return -ENOMEM;
> -
> clk_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> if (!clk_name)
> return -ENOMEM;
> @@ -429,13 +425,14 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
> bytediv->hw.init = &bytediv_init;
> bytediv->reg = pll_28nm->phy->pll_base + REG_DSI_28nm_8960_PHY_PLL_CTRL_9;
>
> - snprintf(parent_name, 32, "dsi%dvco_clk", pll_28nm->phy->id);
> snprintf(clk_name, 32, "dsi%dpllbyte", pll_28nm->phy->id + 1);
>
> bytediv_init.name = clk_name;
> bytediv_init.ops = &clk_bytediv_ops;
> bytediv_init.flags = CLK_SET_RATE_PARENT;
> - bytediv_init.parent_names = (const char * const *) &parent_name;
> + bytediv_init.parent_hws = (const struct clk_hw*[]){
> + &pll_28nm->clk_hw,
> + };
> bytediv_init.num_parents = 1;
I wonder if we can express the bytediv clock with the standard ops.
However it's definitely a separate topic.
>
> /* DIV2 */
> @@ -446,10 +443,9 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov
>
> snprintf(clk_name, 32, "dsi%dpll", pll_28nm->phy->id + 1);
> /* DIV3 */
> - hw = devm_clk_hw_register_divider(dev, clk_name,
> - parent_name, 0, pll_28nm->phy->pll_base +
> - REG_DSI_28nm_8960_PHY_PLL_CTRL_10,
> - 0, 8, 0, NULL);
> + hw = devm_clk_hw_register_divider_parent_hw(dev, clk_name,
> + &pll_28nm->clk_hw, 0, pll_28nm->phy->pll_base +
> + REG_DSI_28nm_8960_PHY_PLL_CTRL_10, 0, 8, 0, NULL);
Again, could you please keep the linebreak in place?
> if (IS_ERR(hw))
> return PTR_ERR(hw);
> provided_clocks[DSI_PIXEL_PLL_CLK] = hw;
> --
> 2.36.1
>
--
With best wishes
Dmitry
