Thread (7 messages) 7 messages, 2 authors, 2016-09-26

Re: [PATCH v8 1/4] soc: mediatek: Refine scpsys to support multiple platform

From: Matthias Brugger <matthias.bgg@gmail.com>
Date: 2016-09-21 10:25:58
Also in: linux-arm-kernel, linux-mediatek, lkml 


On 19/07/16 09:04, James Liao wrote:
quoted hunk ↗ jump to hunk
Refine scpsys driver common code to support multiple SoC / platform.

Signed-off-by: James Liao <redacted>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
---
 drivers/soc/mediatek/mtk-scpsys.c | 363 +++++++++++++++++++++++---------------
 1 file changed, 220 insertions(+), 143 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 837effe..1f3555a 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -11,17 +11,15 @@
  * GNU General Public License for more details.
  */
 #include <linux/clk.h>
-#include <linux/delay.h>
+#include <linux/init.h>
 #include <linux/io.h>
-#include <linux/kernel.h>
 #include <linux/mfd/syscon.h>
-#include <linux/init.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
-#include <linux/regmap.h>
-#include <linux/soc/mediatek/infracfg.h>
 #include <linux/regulator/consumer.h>
+#include <linux/soc/mediatek/infracfg.h>
+
 #include <dt-bindings/power/mt8173-power.h>

 #define SPM_VDE_PWR_CON			0x0210
@@ -34,6 +32,7 @@
 #define SPM_MFG_2D_PWR_CON		0x02c0
 #define SPM_MFG_ASYNC_PWR_CON		0x02c4
 #define SPM_USB_PWR_CON			0x02cc
+
 #define SPM_PWR_STATUS			0x060c
 #define SPM_PWR_STATUS_2ND		0x0610

@@ -55,12 +54,12 @@
 #define PWR_STATUS_USB			BIT(25)

 enum clk_id {
-	MT8173_CLK_NONE,
-	MT8173_CLK_MM,
-	MT8173_CLK_MFG,
-	MT8173_CLK_VENC,
-	MT8173_CLK_VENC_LT,
-	MT8173_CLK_MAX,
+	CLK_NONE,
+	CLK_MM,
+	CLK_MFG,
+	CLK_VENC,
+	CLK_VENC_LT,
+	CLK_MAX,
 };

 #define MAX_CLKS	2
@@ -76,98 +75,6 @@ struct scp_domain_data {
 	bool active_wakeup;
 };

-static const struct scp_domain_data scp_domain_data[] = {
-	[MT8173_POWER_DOMAIN_VDEC] = {
-		.name = "vdec",
-		.sta_mask = PWR_STATUS_VDEC,
-		.ctl_offs = SPM_VDE_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(12, 12),
-		.clk_id = {MT8173_CLK_MM},
-	},
-	[MT8173_POWER_DOMAIN_VENC] = {
-		.name = "venc",
-		.sta_mask = PWR_STATUS_VENC,
-		.ctl_offs = SPM_VEN_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(15, 12),
-		.clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC},
-	},
-	[MT8173_POWER_DOMAIN_ISP] = {
-		.name = "isp",
-		.sta_mask = PWR_STATUS_ISP,
-		.ctl_offs = SPM_ISP_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(13, 12),
-		.clk_id = {MT8173_CLK_MM},
-	},
-	[MT8173_POWER_DOMAIN_MM] = {
-		.name = "mm",
-		.sta_mask = PWR_STATUS_DISP,
-		.ctl_offs = SPM_DIS_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(12, 12),
-		.clk_id = {MT8173_CLK_MM},
-		.bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
-			MT8173_TOP_AXI_PROT_EN_MM_M1,
-	},
-	[MT8173_POWER_DOMAIN_VENC_LT] = {
-		.name = "venc_lt",
-		.sta_mask = PWR_STATUS_VENC_LT,
-		.ctl_offs = SPM_VEN2_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(15, 12),
-		.clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC_LT},
-	},
-	[MT8173_POWER_DOMAIN_AUDIO] = {
-		.name = "audio",
-		.sta_mask = PWR_STATUS_AUDIO,
-		.ctl_offs = SPM_AUDIO_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(15, 12),
-		.clk_id = {MT8173_CLK_NONE},
-	},
-	[MT8173_POWER_DOMAIN_USB] = {
-		.name = "usb",
-		.sta_mask = PWR_STATUS_USB,
-		.ctl_offs = SPM_USB_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(15, 12),
-		.clk_id = {MT8173_CLK_NONE},
-		.active_wakeup = true,
-	},
-	[MT8173_POWER_DOMAIN_MFG_ASYNC] = {
-		.name = "mfg_async",
-		.sta_mask = PWR_STATUS_MFG_ASYNC,
-		.ctl_offs = SPM_MFG_ASYNC_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = 0,
-		.clk_id = {MT8173_CLK_MFG},
-	},
-	[MT8173_POWER_DOMAIN_MFG_2D] = {
-		.name = "mfg_2d",
-		.sta_mask = PWR_STATUS_MFG_2D,
-		.ctl_offs = SPM_MFG_2D_PWR_CON,
-		.sram_pdn_bits = GENMASK(11, 8),
-		.sram_pdn_ack_bits = GENMASK(13, 12),
-		.clk_id = {MT8173_CLK_NONE},
-	},
-	[MT8173_POWER_DOMAIN_MFG] = {
-		.name = "mfg",
-		.sta_mask = PWR_STATUS_MFG,
-		.ctl_offs = SPM_MFG_PWR_CON,
-		.sram_pdn_bits = GENMASK(13, 8),
-		.sram_pdn_ack_bits = GENMASK(21, 16),
-		.clk_id = {MT8173_CLK_NONE},
-		.bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S |
-			MT8173_TOP_AXI_PROT_EN_MFG_M0 |
-			MT8173_TOP_AXI_PROT_EN_MFG_M1 |
-			MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT,
-	},
-};
-
-#define NUM_DOMAINS	ARRAY_SIZE(scp_domain_data)
-
 struct scp;

 struct scp_domain {
@@ -179,7 +86,7 @@ struct scp_domain {
 };

 struct scp {
-	struct scp_domain domains[NUM_DOMAINS];
+	struct scp_domain *domains;
 	struct genpd_onecell_data pd_data;
 	struct device *dev;
 	void __iomem *base;
@@ -408,57 +315,69 @@ static bool scpsys_active_wakeup(struct device *dev)
 	return scpd->data->active_wakeup;
 }

-static int scpsys_probe(struct platform_device *pdev)
+static void init_clks(struct platform_device *pdev, struct clk *clk[CLK_MAX])
+{
+	enum clk_id clk_ids[] = {
+		CLK_MM,
+		CLK_MFG,
+		CLK_VENC,
+		CLK_VENC_LT
+	};
+
+	static const char * const clk_names[] = {
+		"mm",
+		"mfg",
+		"venc",
+		"venc_lt",
+	};
+
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(clk_ids); i++)
+		clk[clk_ids[i]] = devm_clk_get(&pdev->dev, clk_names[i]);
Should be:
for (i = CLK_NONE + 1; i < CLK_MAX; i++)

then we can get rid of clk_ids[].

+}
+
+static struct scp *init_scp(struct platform_device *pdev,
+			const struct scp_domain_data *scp_domain_data, int num)
 {
 	struct genpd_onecell_data *pd_data;
 	struct resource *res;
-	int i, j, ret;
+	int i, j;
 	struct scp *scp;
-	struct clk *clk[MT8173_CLK_MAX];
+	struct clk *clk[CLK_MAX];

 	scp = devm_kzalloc(&pdev->dev, sizeof(*scp), GFP_KERNEL);
 	if (!scp)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);

 	scp->dev = &pdev->dev;

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	scp->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(scp->base))
-		return PTR_ERR(scp->base);
-
-	pd_data = &scp->pd_data;
-
-	pd_data->domains = devm_kzalloc(&pdev->dev,
-			sizeof(*pd_data->domains) * NUM_DOMAINS, GFP_KERNEL);
-	if (!pd_data->domains)
-		return -ENOMEM;
-
-	clk[MT8173_CLK_MM] = devm_clk_get(&pdev->dev, "mm");
-	if (IS_ERR(clk[MT8173_CLK_MM]))
-		return PTR_ERR(clk[MT8173_CLK_MM]);
-
-	clk[MT8173_CLK_MFG] = devm_clk_get(&pdev->dev, "mfg");
-	if (IS_ERR(clk[MT8173_CLK_MFG]))
-		return PTR_ERR(clk[MT8173_CLK_MFG]);
-
-	clk[MT8173_CLK_VENC] = devm_clk_get(&pdev->dev, "venc");
-	if (IS_ERR(clk[MT8173_CLK_VENC]))
-		return PTR_ERR(clk[MT8173_CLK_VENC]);
-
-	clk[MT8173_CLK_VENC_LT] = devm_clk_get(&pdev->dev, "venc_lt");
-	if (IS_ERR(clk[MT8173_CLK_VENC_LT]))
-		return PTR_ERR(clk[MT8173_CLK_VENC_LT]);
+		return ERR_CAST(scp->base);

 	scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
 			"infracfg");
 	if (IS_ERR(scp->infracfg)) {
 		dev_err(&pdev->dev, "Cannot find infracfg controller: %ld\n",
 				PTR_ERR(scp->infracfg));
-		return PTR_ERR(scp->infracfg);
+		return ERR_CAST(scp->infracfg);
 	}

-	for (i = 0; i < NUM_DOMAINS; i++) {
+	scp->domains = devm_kzalloc(&pdev->dev,
+				sizeof(*scp->domains) * num, GFP_KERNEL);
+	if (!scp->domains)
+		return ERR_PTR(-ENOMEM);
+
+	pd_data = &scp->pd_data;
+
+	pd_data->domains = devm_kzalloc(&pdev->dev,
+			sizeof(*pd_data->domains) * num, GFP_KERNEL);
+	if (!pd_data->domains)
+		return ERR_PTR(-ENOMEM);
+
While at it, please leave this block of code between
devm_ioremap_resource(...) and syscon_regmap_lookup_by_phandle(...)

Thanks,
Matthias
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