| Message ID | 20211202141726.1796793-5-dmitry.baryshkov@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | qcom: add support for PCIe0 on SM8450 platform | expand |
On Thu, Dec 02, 2021 at 05:17:20PM +0300, Dmitry Baryshkov wrote: > In preparation to adding more flags to configuration data, use struct > qcom_pcie_cfg directly inside struct qcom_pcie, rather than duplicating > all its fields. This would save us from the boilerplate code that just > copies flags values from one sruct to another one. > > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/pci/controller/dwc/pcie-qcom.c | 34 ++++++++++++-------------- > 1 file changed, 16 insertions(+), 18 deletions(-) > > diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c > index 3bee901c4df7..64f762cdbc7d 100644 > --- a/drivers/pci/controller/dwc/pcie-qcom.c > +++ b/drivers/pci/controller/dwc/pcie-qcom.c > @@ -204,8 +204,7 @@ struct qcom_pcie { > union qcom_pcie_resources res; > struct phy *phy; > struct gpio_desc *reset; > - const struct qcom_pcie_ops *ops; > - unsigned int pipe_clk_need_muxing:1; > + struct qcom_pcie_cfg cfg; A common strategy is to simply save the pointer to the match data, e.g., struct imx6_pcie { ... const struct imx6_pcie_drvdata *drvdata; }; imx6_pcie_probe() imx6_pcie->drvdata = of_device_get_match_data(dev); struct ls_pcie { ... const struct ls_pcie_drvdata *drvdata; }; ls_pcie_probe() pcie->drvdata = of_device_get_match_data(dev); struct tegra_pcie { ... const struct tegra_pcie_soc *soc; }; tegra_pcie_probe() pcie->soc = of_device_get_match_data(dev); struct mtk_pcie { ... const struct mtk_pcie_soc *soc; }; mtk_pcie_probe() pcie->soc = of_device_get_match_data(dev); Bonus points if you name the pointer the same, e.g., "soc" or maybe "drvdata" (although this one is possibly confusing with platform_set_drvdata(), which is something different). > }; > > #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) > @@ -229,8 +228,8 @@ static int qcom_pcie_start_link(struct dw_pcie *pci) > struct qcom_pcie *pcie = to_qcom_pcie(pci); > > /* Enable Link Training state machine */ > - if (pcie->ops->ltssm_enable) > - pcie->ops->ltssm_enable(pcie); > + if (pcie->cfg.ops->ltssm_enable) > + pcie->cfg.ops->ltssm_enable(pcie); > > return 0; > } > @@ -1176,7 +1175,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) > if (ret < 0) > return ret; > > - if (pcie->pipe_clk_need_muxing) { > + if (pcie->cfg.pipe_clk_need_muxing) { > res->pipe_clk_src = devm_clk_get(dev, "pipe_mux"); > if (IS_ERR(res->pipe_clk_src)) > return PTR_ERR(res->pipe_clk_src); > @@ -1209,7 +1208,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) > } > > /* Set TCXO as clock source for pcie_pipe_clk_src */ > - if (pcie->pipe_clk_need_muxing) > + if (pcie->cfg.pipe_clk_need_muxing) > clk_set_parent(res->pipe_clk_src, res->ref_clk_src); > > ret = clk_bulk_prepare_enable(res->num_clks, res->clks); > @@ -1287,7 +1286,7 @@ static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie) > struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; > > /* Set pipe clock as clock source for pcie_pipe_clk_src */ > - if (pcie->pipe_clk_need_muxing) > + if (pcie->cfg.pipe_clk_need_muxing) > clk_set_parent(res->pipe_clk_src, res->phy_pipe_clk); > > return clk_prepare_enable(res->pipe_clk); > @@ -1387,7 +1386,7 @@ static int qcom_pcie_host_init(struct pcie_port *pp) > > qcom_ep_reset_assert(pcie); > > - ret = pcie->ops->init(pcie); > + ret = pcie->cfg.ops->init(pcie); > if (ret) > return ret; > > @@ -1395,16 +1394,16 @@ static int qcom_pcie_host_init(struct pcie_port *pp) > if (ret) > goto err_deinit; > > - if (pcie->ops->post_init) { > - ret = pcie->ops->post_init(pcie); > + if (pcie->cfg.ops->post_init) { > + ret = pcie->cfg.ops->post_init(pcie); > if (ret) > goto err_disable_phy; > } > > qcom_ep_reset_deassert(pcie); > > - if (pcie->ops->config_sid) { > - ret = pcie->ops->config_sid(pcie); > + if (pcie->cfg.ops->config_sid) { > + ret = pcie->cfg.ops->config_sid(pcie); > if (ret) > goto err; > } > @@ -1413,12 +1412,12 @@ static int qcom_pcie_host_init(struct pcie_port *pp) > > err: > qcom_ep_reset_assert(pcie); > - if (pcie->ops->post_deinit) > - pcie->ops->post_deinit(pcie); > + if (pcie->cfg.ops->post_deinit) > + pcie->cfg.ops->post_deinit(pcie); > err_disable_phy: > phy_power_off(pcie->phy); > err_deinit: > - pcie->ops->deinit(pcie); > + pcie->cfg.ops->deinit(pcie); > > return ret; > } > @@ -1562,8 +1561,7 @@ static int qcom_pcie_probe(struct platform_device *pdev) > return -EINVAL; > } > > - pcie->ops = pcie_cfg->ops; > - pcie->pipe_clk_need_muxing = pcie_cfg->pipe_clk_need_muxing; > + pcie->cfg = *pcie_cfg; > > pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_HIGH); > if (IS_ERR(pcie->reset)) { > @@ -1589,7 +1587,7 @@ static int qcom_pcie_probe(struct platform_device *pdev) > goto err_pm_runtime_put; > } > > - ret = pcie->ops->get_resources(pcie); > + ret = pcie->cfg.ops->get_resources(pcie); > if (ret) > goto err_pm_runtime_put; > > -- > 2.33.0 >
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 3bee901c4df7..64f762cdbc7d 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -204,8 +204,7 @@ struct qcom_pcie { union qcom_pcie_resources res; struct phy *phy; struct gpio_desc *reset; - const struct qcom_pcie_ops *ops; - unsigned int pipe_clk_need_muxing:1; + struct qcom_pcie_cfg cfg; }; #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) @@ -229,8 +228,8 @@ static int qcom_pcie_start_link(struct dw_pcie *pci) struct qcom_pcie *pcie = to_qcom_pcie(pci); /* Enable Link Training state machine */ - if (pcie->ops->ltssm_enable) - pcie->ops->ltssm_enable(pcie); + if (pcie->cfg.ops->ltssm_enable) + pcie->cfg.ops->ltssm_enable(pcie); return 0; } @@ -1176,7 +1175,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) if (ret < 0) return ret; - if (pcie->pipe_clk_need_muxing) { + if (pcie->cfg.pipe_clk_need_muxing) { res->pipe_clk_src = devm_clk_get(dev, "pipe_mux"); if (IS_ERR(res->pipe_clk_src)) return PTR_ERR(res->pipe_clk_src); @@ -1209,7 +1208,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) } /* Set TCXO as clock source for pcie_pipe_clk_src */ - if (pcie->pipe_clk_need_muxing) + if (pcie->cfg.pipe_clk_need_muxing) clk_set_parent(res->pipe_clk_src, res->ref_clk_src); ret = clk_bulk_prepare_enable(res->num_clks, res->clks); @@ -1287,7 +1286,7 @@ static int qcom_pcie_post_init_2_7_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; /* Set pipe clock as clock source for pcie_pipe_clk_src */ - if (pcie->pipe_clk_need_muxing) + if (pcie->cfg.pipe_clk_need_muxing) clk_set_parent(res->pipe_clk_src, res->phy_pipe_clk); return clk_prepare_enable(res->pipe_clk); @@ -1387,7 +1386,7 @@ static int qcom_pcie_host_init(struct pcie_port *pp) qcom_ep_reset_assert(pcie); - ret = pcie->ops->init(pcie); + ret = pcie->cfg.ops->init(pcie); if (ret) return ret; @@ -1395,16 +1394,16 @@ static int qcom_pcie_host_init(struct pcie_port *pp) if (ret) goto err_deinit; - if (pcie->ops->post_init) { - ret = pcie->ops->post_init(pcie); + if (pcie->cfg.ops->post_init) { + ret = pcie->cfg.ops->post_init(pcie); if (ret) goto err_disable_phy; } qcom_ep_reset_deassert(pcie); - if (pcie->ops->config_sid) { - ret = pcie->ops->config_sid(pcie); + if (pcie->cfg.ops->config_sid) { + ret = pcie->cfg.ops->config_sid(pcie); if (ret) goto err; } @@ -1413,12 +1412,12 @@ static int qcom_pcie_host_init(struct pcie_port *pp) err: qcom_ep_reset_assert(pcie); - if (pcie->ops->post_deinit) - pcie->ops->post_deinit(pcie); + if (pcie->cfg.ops->post_deinit) + pcie->cfg.ops->post_deinit(pcie); err_disable_phy: phy_power_off(pcie->phy); err_deinit: - pcie->ops->deinit(pcie); + pcie->cfg.ops->deinit(pcie); return ret; } @@ -1562,8 +1561,7 @@ static int qcom_pcie_probe(struct platform_device *pdev) return -EINVAL; } - pcie->ops = pcie_cfg->ops; - pcie->pipe_clk_need_muxing = pcie_cfg->pipe_clk_need_muxing; + pcie->cfg = *pcie_cfg; pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_HIGH); if (IS_ERR(pcie->reset)) { @@ -1589,7 +1587,7 @@ static int qcom_pcie_probe(struct platform_device *pdev) goto err_pm_runtime_put; } - ret = pcie->ops->get_resources(pcie); + ret = pcie->cfg.ops->get_resources(pcie); if (ret) goto err_pm_runtime_put;
In preparation to adding more flags to configuration data, use struct qcom_pcie_cfg directly inside struct qcom_pcie, rather than duplicating all its fields. This would save us from the boilerplate code that just copies flags values from one sruct to another one. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/pci/controller/dwc/pcie-qcom.c | 34 ++++++++++++-------------- 1 file changed, 16 insertions(+), 18 deletions(-)