niansa-misc/linux
1
0
Fork 0
mirror of synced 2025-03-06 20:59:54 +01:00
Code Issues Projects Releases Packages Wiki Activity

soc: mediatek: Refine scpsys to support multiple platform

Browse source 
Refine scpsys driver common code to support multiple SoC / platform.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
James Liao 2016-10-20 16:56:35 +08:00 • committed by Matthias Brugger
parent 1001354ca3
commit 6078c65194
1 changed files with 211 additions and 139 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

350
drivers/soc/mediatek/mtk-scpsys.c
View file

@ -11,17 +11,15 @@
* GNU General Public License for more details. * GNU General Public License for more details.
*/ */
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/of_device.h> #include <linux/of_device.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/pm_domain.h> #include <linux/pm_domain.h>
#include <linux/regmap.h>
#include <linux/soc/mediatek/infracfg.h>
#include <linux/regulator/consumer.h> #include <linux/regulator/consumer.h>
#include <linux/soc/mediatek/infracfg.h>
#include <dt-bindings/power/mt8173-power.h> #include <dt-bindings/power/mt8173-power.h>
#define SPM_VDE_PWR_CON 0x0210 #define SPM_VDE_PWR_CON 0x0210
@ -34,6 +32,7 @@
#define SPM_MFG_2D_PWR_CON 0x02c0 #define SPM_MFG_2D_PWR_CON 0x02c0
#define SPM_MFG_ASYNC_PWR_CON 0x02c4 #define SPM_MFG_ASYNC_PWR_CON 0x02c4
#define SPM_USB_PWR_CON 0x02cc #define SPM_USB_PWR_CON 0x02cc
#define SPM_PWR_STATUS 0x060c #define SPM_PWR_STATUS 0x060c
#define SPM_PWR_STATUS_2ND 0x0610 #define SPM_PWR_STATUS_2ND 0x0610
@ -55,12 +54,21 @@
#define PWR_STATUS_USB BIT(25) #define PWR_STATUS_USB BIT(25)
enum clk_id { enum clk_id {
MT8173_CLK_NONE, CLK_NONE,
MT8173_CLK_MM, CLK_MM,
MT8173_CLK_MFG, CLK_MFG,
MT8173_CLK_VENC, CLK_VENC,
MT8173_CLK_VENC_LT, CLK_VENC_LT,
MT8173_CLK_MAX, CLK_MAX,
};
static const char * const clk_names[] = {
NULL,
"mm",
"mfg",
"venc",
"venc_lt",
NULL,
}; };
#define MAX_CLKS 2 #define MAX_CLKS 2
@ -76,98 +84,6 @@ struct scp_domain_data {
bool active_wakeup; 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;
struct scp_domain { struct scp_domain {
@ -179,7 +95,7 @@ struct scp_domain {
}; };
struct scp { struct scp {
struct scp_domain domains[NUM_DOMAINS]; struct scp_domain *domains;
struct genpd_onecell_data pd_data; struct genpd_onecell_data pd_data;
struct device *dev; struct device *dev;
void __iomem *base; void __iomem *base;
@ -408,57 +324,55 @@ static bool scpsys_active_wakeup(struct device *dev)
return scpd->data->active_wakeup; return scpd->data->active_wakeup;
} }
static int scpsys_probe(struct platform_device *pdev) static void init_clks(struct platform_device *pdev, struct clk **clk)
{
int i;
for (i = CLK_NONE + 1; i < CLK_MAX; i++)
clk[i] = devm_clk_get(&pdev->dev, clk_names[i]);
}
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 genpd_onecell_data *pd_data;
struct resource *res; struct resource *res;
int i, j, ret; int i, j;
struct scp *scp; struct scp *scp;
struct clk *clk[MT8173_CLK_MAX]; struct clk *clk[CLK_MAX];
scp = devm_kzalloc(&pdev->dev, sizeof(*scp), GFP_KERNEL); scp = devm_kzalloc(&pdev->dev, sizeof(*scp), GFP_KERNEL);
if (!scp) if (!scp)
return -ENOMEM; return ERR_PTR(-ENOMEM);
scp->dev = &pdev->dev; scp->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
scp->base = devm_ioremap_resource(&pdev->dev, res); scp->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(scp->base)) if (IS_ERR(scp->base))
return PTR_ERR(scp->base); return ERR_CAST(scp->base);
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 = &scp->pd_data;
pd_data->domains = devm_kzalloc(&pdev->dev, pd_data->domains = devm_kzalloc(&pdev->dev,
sizeof(*pd_data->domains) * NUM_DOMAINS, GFP_KERNEL); sizeof(*pd_data->domains) * num, GFP_KERNEL);
if (!pd_data->domains) if (!pd_data->domains)
return -ENOMEM; return ERR_PTR(-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]);
scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"infracfg"); "infracfg");
if (IS_ERR(scp->infracfg)) { if (IS_ERR(scp->infracfg)) {
dev_err(&pdev->dev, "Cannot find infracfg controller: %ld\n", dev_err(&pdev->dev, "Cannot find infracfg controller: %ld\n",
PTR_ERR(scp->infracfg)); PTR_ERR(scp->infracfg));
return PTR_ERR(scp->infracfg); return ERR_CAST(scp->infracfg);
} }
for (i = 0; i < NUM_DOMAINS; i++) { for (i = 0; i < num; i++) {
struct scp_domain *scpd = &scp->domains[i]; struct scp_domain *scpd = &scp->domains[i];
const struct scp_domain_data *data = &scp_domain_data[i]; const struct scp_domain_data *data = &scp_domain_data[i];
@ -467,13 +381,15 @@ static int scpsys_probe(struct platform_device *pdev)
if (PTR_ERR(scpd->supply) == -ENODEV) if (PTR_ERR(scpd->supply) == -ENODEV)
scpd->supply = NULL; scpd->supply = NULL;
else else
return PTR_ERR(scpd->supply); return ERR_CAST(scpd->supply);
} }
} }
pd_data->num_domains = NUM_DOMAINS; pd_data->num_domains = num;
for (i = 0; i < NUM_DOMAINS; i++) { init_clks(pdev, clk);
for (i = 0; i < num; i++) {
struct scp_domain *scpd = &scp->domains[i]; struct scp_domain *scpd = &scp->domains[i];
struct generic_pm_domain *genpd = &scpd->genpd; struct generic_pm_domain *genpd = &scpd->genpd;
const struct scp_domain_data *data = &scp_domain_data[i]; const struct scp_domain_data *data = &scp_domain_data[i];
@ -482,13 +398,37 @@ static int scpsys_probe(struct platform_device *pdev)
scpd->scp = scp; scpd->scp = scp;
scpd->data = data; scpd->data = data;
for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++)
scpd->clk[j] = clk[data->clk_id[j]]; for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++) {
struct clk *c = clk[data->clk_id[j]];
if (IS_ERR(c)) {
dev_err(&pdev->dev, "%s: clk unavailable\n",
data->name);
return ERR_CAST(c);
}
scpd->clk[j] = c;
}
genpd->name = data->name; genpd->name = data->name;
genpd->power_off = scpsys_power_off; genpd->power_off = scpsys_power_off;
genpd->power_on = scpsys_power_on; genpd->power_on = scpsys_power_on;
genpd->dev_ops.active_wakeup = scpsys_active_wakeup; genpd->dev_ops.active_wakeup = scpsys_active_wakeup;
}
return scp;
}
static void mtk_register_power_domains(struct platform_device *pdev,
struct scp *scp, int num)
{
struct genpd_onecell_data *pd_data;
int i, ret;
for (i = 0; i < num; i++) {
struct scp_domain *scpd = &scp->domains[i];
struct generic_pm_domain *genpd = &scpd->genpd;
/* /*
* Initially turn on all domains to make the domains usable * Initially turn on all domains to make the domains usable
@ -507,6 +447,123 @@ static int scpsys_probe(struct platform_device *pdev)
* valid. * valid.
*/ */
pd_data = &scp->pd_data;
ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
if (ret)
dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
}
/*
* MT8173 power domain support
*/
static const struct scp_domain_data scp_domain_data_mt8173[] = {
[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 = {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 = {CLK_MM, 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 = {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 = {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 = {CLK_MM, 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 = {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 = {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 = {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 = {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 = {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_MT8173 ARRAY_SIZE(scp_domain_data_mt8173)
static int __init scpsys_probe_mt8173(struct platform_device *pdev)
{
struct scp *scp;
struct genpd_onecell_data *pd_data;
int ret;
scp = init_scp(pdev, scp_domain_data_mt8173, NUM_DOMAINS_MT8173);
if (IS_ERR(scp))
return PTR_ERR(scp);
mtk_register_power_domains(pdev, scp, NUM_DOMAINS_MT8173);
pd_data = &scp->pd_data;
ret = pm_genpd_add_subdomain(pd_data->domains[MT8173_POWER_DOMAIN_MFG_ASYNC], ret = pm_genpd_add_subdomain(pd_data->domains[MT8173_POWER_DOMAIN_MFG_ASYNC],
pd_data->domains[MT8173_POWER_DOMAIN_MFG_2D]); pd_data->domains[MT8173_POWER_DOMAIN_MFG_2D]);
if (ret && IS_ENABLED(CONFIG_PM)) if (ret && IS_ENABLED(CONFIG_PM))
@ -517,21 +574,36 @@ static int scpsys_probe(struct platform_device *pdev)
if (ret && IS_ENABLED(CONFIG_PM)) if (ret && IS_ENABLED(CONFIG_PM))
dev_err(&pdev->dev, "Failed to add subdomain: %d\n", ret); dev_err(&pdev->dev, "Failed to add subdomain: %d\n", ret);
ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
if (ret)
dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
return 0; return 0;
} }
/*
* scpsys driver init
*/
static const struct of_device_id of_scpsys_match_tbl[] = { static const struct of_device_id of_scpsys_match_tbl[] = {
{ {
.compatible = "mediatek,mt8173-scpsys", .compatible = "mediatek,mt8173-scpsys",
.data = scpsys_probe_mt8173,
}, { }, {
/* sentinel */ /* sentinel */
} }
}; };
static int scpsys_probe(struct platform_device *pdev)
{
int (*probe)(struct platform_device *);
const struct of_device_id *of_id;
of_id = of_match_node(of_scpsys_match_tbl, pdev->dev.of_node);
if (!of_id || !of_id->data)
return -EINVAL;
probe = of_id->data;
return probe(pdev);
}
static struct platform_driver scpsys_drv = { static struct platform_driver scpsys_drv = {
.probe = scpsys_probe, .probe = scpsys_probe,
.driver = { .driver = {