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Message-ID: <VI1PR04MB4333C000C9B8DCA7387284A6F3540@VI1PR04MB4333.eurprd04.prod.outlook.com>
Date: Fri, 13 Dec 2019 08:52:26 +0000
From: Andy Tang <andy.tang@....com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
Andrey Smirnov <andrew.smirnov@...il.com>
CC: Anson Huang <anson.huang@....com>,
Lucas Stach <l.stach@...gutronix.de>,
Chris Healy <cphealy@...il.com>,
Eduardo Valentin <edubezval@...il.com>,
Angus Ainslie <angus@...ea.ca>,
dl-linux-imx <linux-imx@....com>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [EXT] [PATCH v8 08/12] thermal: qoriq: Convert driver to use
regmap API
> -----Original Message-----
> From: Daniel Lezcano <daniel.lezcano@...aro.org>
> Sent: 2019年12月13日 15:48
> To: Andy Tang <andy.tang@....com>; Andrey Smirnov
> <andrew.smirnov@...il.com>
> Cc: Anson Huang <anson.huang@....com>; Lucas Stach
> <l.stach@...gutronix.de>; Chris Healy <cphealy@...il.com>; Eduardo
> Valentin <edubezval@...il.com>; Angus Ainslie <angus@...ea.ca>;
> dl-linux-imx <linux-imx@....com>; linux-pm@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [EXT] [PATCH v8 08/12] thermal: qoriq: Convert driver to use
> regmap API
>
> Caution: EXT Email
>
> On 13/12/2019 07:16, Andy Tang wrote:
> > Hi Andrew,
> >
> > I failed to apply your patch. Could you please rebase it to the latest code
> and send me the patch directly?
>
> Hi Andy,
>
> I'm taking care of the series.
Thanks, I just want to verify it on the board since the author can't access the tmu v2 module.
BR,
Andy
>
> Thanks
>
> -- Daniel
>
>
> >> -----Original Message-----
> >> From: Andrey Smirnov <andrew.smirnov@...il.com>
> >> Sent: 2019年12月11日 0:42
> >> To: Daniel Lezcano <daniel.lezcano@...aro.org>
> >> Cc: Andrey Smirnov <andrew.smirnov@...il.com>; Andy Tang
> >> <andy.tang@....com>; Anson Huang <anson.huang@....com>; Lucas
> Stach
> >> <l.stach@...gutronix.de>; Chris Healy <cphealy@...il.com>; Eduardo
> >> Valentin <edubezval@...il.com>; Angus Ainslie <angus@...ea.ca>;
> >> dl-linux-imx <linux-imx@....com>; linux-pm@...r.kernel.org;
> >> linux-kernel@...r.kernel.org
> >> Subject: [EXT] [PATCH v8 08/12] thermal: qoriq: Convert driver to use
> >> regmap API
> >>
> >> Caution: EXT Email
> >>
> >> Convert driver to use regmap API, drop custom LE/BE IO helpers and
> >> simplify bit manipulation using regmap_update_bits(). This also
> >> allows us to convert some register initialization to use loops and
> >> adds convenient debug access to TMU registers via debugfs.
> >>
> >> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
> >> Reviewed-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> >> Tested-by: Lucas Stach <l.stach@...gutronix.de>
> >> Cc: Chris Healy <cphealy@...il.com>
> >> Cc: Lucas Stach <l.stach@...gutronix.de>
> >> Cc: Eduardo Valentin <edubezval@...il.com>
> >> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> >> Cc: Angus Ainslie (Purism) <angus@...ea.ca>
> >> Cc: linux-imx@....com
> >> Cc: linux-pm@...r.kernel.org
> >> Cc: linux-kernel@...r.kernel.org
> >> ---
> >>
> >> Yuantian, Anson:
> >>
> >> I don't have access to Layerscape HW that has v2 register layout, so
> >> if you could give this patch a try and verify that I got the
> >> 'qoriq_yes_ranges' right, I'd really appreciate it.
> >>
> >> Thanks,
> >> Andrey Smirnov
> >>
> >> drivers/thermal/qoriq_thermal.c | 228
> >> ++++++++++++++------------------
> >> 1 file changed, 98 insertions(+), 130 deletions(-)
> >>
> >> diff --git a/drivers/thermal/qoriq_thermal.c
> >> b/drivers/thermal/qoriq_thermal.c index 11749c673b3b..6227c940b9b0
> >> 100644
> >> --- a/drivers/thermal/qoriq_thermal.c
> >> +++ b/drivers/thermal/qoriq_thermal.c
> >> @@ -9,6 +9,7 @@
> >> #include <linux/io.h>
> >> #include <linux/of.h>
> >> #include <linux/of_address.h>
> >> +#include <linux/regmap.h>
> >> #include <linux/thermal.h>
> >>
> >> #include "thermal_core.h"
> >> @@ -24,85 +25,35 @@
> >> #define TMU_VER1 0x1
> >> #define TMU_VER2 0x2
> >>
> >> -/*
> >> - * QorIQ TMU Registers
> >> - */
> >> -struct qoriq_tmu_site_regs {
> >> - u32 tritsr; /* Immediate Temperature Site
> Register
> >> */
> >> - u32 tratsr; /* Average Temperature Site Register
> */
> >> - u8 res0[0x8];
> >> -};
> >> +#define REGS_TMR 0x000 /* Mode Register */
> >> +#define TMR_DISABLE 0x0
> >> +#define TMR_ME 0x80000000
> >> +#define TMR_ALPF 0x0c000000
> >>
> >> -struct qoriq_tmu_regs_v1 {
> >> - u32 tmr; /* Mode Register */
> >> - u32 tsr; /* Status Register */
> >> - u32 tmtmir; /* Temperature measurement
> interval
> >> Register */
> >> - u8 res0[0x14];
> >> - u32 tier; /* Interrupt Enable Register */
> >> - u32 tidr; /* Interrupt Detect Register */
> >> - u32 tiscr; /* Interrupt Site Capture Register */
> >> - u32 ticscr; /* Interrupt Critical Site Capture
> Register
> >> */
> >> - u8 res1[0x10];
> >> - u32 tmhtcrh; /* High Temperature Capture
> Register
> >> */
> >> - u32 tmhtcrl; /* Low Temperature Capture
> Register */
> >> - u8 res2[0x8];
> >> - u32 tmhtitr; /* High Temperature Immediate
> >> Threshold */
> >> - u32 tmhtatr; /* High Temperature Average
> Threshold
> >> */
> >> - u32 tmhtactr; /* High Temperature Average Crit Threshold */
> >> - u8 res3[0x24];
> >> - u32 ttcfgr; /* Temperature Configuration
> Register
> >> */
> >> - u32 tscfgr; /* Sensor Configuration Register */
> >> - u8 res4[0x78];
> >> - struct qoriq_tmu_site_regs site[SITES_MAX];
> >> - u8 res5[0x9f8];
> >> - u32 ipbrr0; /* IP Block Revision Register 0 */
> >> - u32 ipbrr1; /* IP Block Revision Register 1 */
> >> - u8 res6[0x310];
> >> - u32 ttrcr[4]; /* Temperature Range Control
> Register */
> >> -};
> >> +#define REGS_TMTMIR 0x008 /* Temperature measurement
> >> interval Register */
> >> +#define TMTMIR_DEFAULT 0x0000000f
> >>
> >> -struct qoriq_tmu_regs_v2 {
> >> - u32 tmr; /* Mode Register */
> >> - u32 tsr; /* Status Register */
> >> - u32 tmsr; /* monitor site register */
> >> - u32 tmtmir; /* Temperature measurement
> interval
> >> Register */
> >> - u8 res0[0x10];
> >> - u32 tier; /* Interrupt Enable Register */
> >> - u32 tidr; /* Interrupt Detect Register */
> >> - u8 res1[0x8];
> >> - u32 tiiscr; /* interrupt immediate site capture
> >> register */
> >> - u32 tiascr; /* interrupt average site capture
> register
> >> */
> >> - u32 ticscr; /* Interrupt Critical Site Capture
> Register
> >> */
> >> - u32 res2;
> >> - u32 tmhtcr; /* monitor high temperature capture
> >> register */
> >> - u32 tmltcr; /* monitor low temperature capture
> >> register */
> >> - u32 tmrtrcr; /* monitor rising temperature rate capture
> >> register */
> >> - u32 tmftrcr; /* monitor falling temperature rate capture
> >> register */
> >> - u32 tmhtitr; /* High Temperature Immediate Threshold */
> >> - u32 tmhtatr; /* High Temperature Average Threshold */
> >> - u32 tmhtactr; /* High Temperature Average Crit Threshold */
> >> - u32 res3;
> >> - u32 tmltitr; /* monitor low temperature immediate
> threshold
> >> */
> >> - u32 tmltatr; /* monitor low temperature average threshold
> >> register */
> >> - u32 tmltactr; /* monitor low temperature average critical
> >> threshold */
> >> - u32 res4;
> >> - u32 tmrtrctr; /* monitor rising temperature rate critical
> >> threshold */
> >> - u32 tmftrctr; /* monitor falling temperature rate critical
> >> threshold*/
> >> - u8 res5[0x8];
> >> - u32 ttcfgr; /* Temperature Configuration Register */
> >> - u32 tscfgr; /* Sensor Configuration Register */
> >> - u8 res6[0x78];
> >> - struct qoriq_tmu_site_regs site[SITES_MAX];
> >> - u8 res7[0x9f8];
> >> - u32 ipbrr0; /* IP Block Revision Register 0 */
> >> - u32 ipbrr1; /* IP Block Revision Register 1 */
> >> - u8 res8[0x300];
> >> - u32 teumr0;
> >> - u32 teumr1;
> >> - u32 teumr2;
> >> - u32 res9;
> >> - u32 ttrcr[4]; /* Temperature Range Control Register */
> >> -};
> >> +#define REGS_V2_TMSR 0x008 /* monitor site register */
> >> +
> >> +#define REGS_V2_TMTMIR 0x00c /* Temperature measurement
> interval
> >> Register */
> >> +
> >> +#define REGS_TIER 0x020 /* Interrupt Enable Register */
> >> +#define TIER_DISABLE 0x0
> >> +
> >> +
> >> +#define REGS_TTCFGR 0x080 /* Temperature Configuration
> Register
> >> */
> >> +#define REGS_TSCFGR 0x084 /* Sensor Configuration Register */
> >> +
> >> +#define REGS_TRITSR(n) (0x100 + 16 * (n)) /* Immediate Temperature
> >> + * Site Register
> >> + */ #define
> >> REGS_TTRnCR(n)
> >> +(0xf10 + 4 * (n)) /* Temperature Range n
> >> + * Control Register
> >> + */
> >> +#define REGS_IPBRR(n) (0xbf8 + 4 * (n)) /* IP Block Revision
> >> + * Register
> n
> >> + */
> >> +#define REGS_V2_TEUMR(n) (0xf00 + 4 * (n))
> >>
> >> /*
> >> * Thermal zone data
> >> @@ -113,10 +64,8 @@ struct qoriq_sensor {
> >>
> >> struct qoriq_tmu_data {
> >> int ver;
> >> - struct qoriq_tmu_regs_v1 __iomem *regs;
> >> - struct qoriq_tmu_regs_v2 __iomem *regs_v2;
> >> + struct regmap *regmap;
> >> struct clk *clk;
> >> - bool little_endian;
> >> struct qoriq_sensor sensor[SITES_MAX];
> >> };
> >>
> >> @@ -125,29 +74,13 @@ static struct qoriq_tmu_data
> >> *qoriq_sensor_to_data(struct qoriq_sensor *s)
> >> return container_of(s, struct qoriq_tmu_data, sensor[s->id]);
> >> }
> >>
> >> -static void tmu_write(struct qoriq_tmu_data *p, u32 val, void
> >> __iomem
> >> *addr) -{
> >> - if (p->little_endian)
> >> - iowrite32(val, addr);
> >> - else
> >> - iowrite32be(val, addr);
> >> -}
> >> -
> >> -static u32 tmu_read(struct qoriq_tmu_data *p, void __iomem *addr) -{
> >> - if (p->little_endian)
> >> - return ioread32(addr);
> >> - else
> >> - return ioread32be(addr);
> >> -}
> >> -
> >> static int tmu_get_temp(void *p, int *temp) {
> >> struct qoriq_sensor *qsensor = p;
> >> struct qoriq_tmu_data *qdata =
> qoriq_sensor_to_data(qsensor);
> >> u32 val;
> >>
> >> - val = tmu_read(qdata, &qdata->regs->site[qsensor->id].tritsr);
> >> + regmap_read(qdata->regmap, REGS_TRITSR(qsensor->id),
> &val);
> >> *temp = (val & 0xff) * 1000;
> >>
> >> return 0;
> >> @@ -189,12 +122,12 @@ static int qoriq_tmu_register_tmu_zone(struct
> >> device *dev,
> >> /* Enable monitoring */
> >> if (sites != 0) {
> >> if (qdata->ver == TMU_VER1) {
> >> - tmu_write(qdata, sites | TMR_ME |
> TMR_ALPF,
> >> - &qdata->regs->tmr);
> >> + regmap_write(qdata->regmap, REGS_TMR,
> >> + sites | TMR_ME |
> TMR_ALPF);
> >> } else {
> >> - tmu_write(qdata, sites,
> >> &qdata->regs_v2->tmsr);
> >> - tmu_write(qdata, TMR_ME | TMR_ALPF_V2,
> >> - &qdata->regs_v2->tmr);
> >> + regmap_write(qdata->regmap,
> >> REGS_V2_TMSR, sites);
> >> + regmap_write(qdata->regmap, REGS_TMR,
> >> + TMR_ME | TMR_ALPF_V2);
> >> }
> >> }
> >>
> >> @@ -223,7 +156,7 @@ static int qoriq_tmu_calibration(struct device
> >> *dev,
> >>
> >> /* Init temperature range registers */
> >> for (i = 0; i < len; i++)
> >> - tmu_write(data, range[i], &data->regs->ttrcr[i]);
> >> + regmap_write(data->regmap, REGS_TTRnCR(i),
> range[i]);
> >>
> >> calibration = of_get_property(np, "fsl,tmu-calibration", &len);
> >> if (calibration == NULL || len % 8) { @@ -233,9 +166,9 @@
> >> static int qoriq_tmu_calibration(struct device *dev,
> >>
> >> for (i = 0; i < len; i += 8, calibration += 2) {
> >> val = of_read_number(calibration, 1);
> >> - tmu_write(data, val, &data->regs->ttcfgr);
> >> + regmap_write(data->regmap, REGS_TTCFGR, val);
> >> val = of_read_number(calibration + 1, 1);
> >> - tmu_write(data, val, &data->regs->tscfgr);
> >> + regmap_write(data->regmap, REGS_TSCFGR, val);
> >> }
> >>
> >> return 0;
> >> @@ -244,20 +177,40 @@ static int qoriq_tmu_calibration(struct device
> >> *dev, static void qoriq_tmu_init_device(struct qoriq_tmu_data *data) {
> >> /* Disable interrupt, using polling instead */
> >> - tmu_write(data, TIER_DISABLE, &data->regs->tier);
> >> + regmap_write(data->regmap, REGS_TIER, TIER_DISABLE);
> >>
> >> /* Set update_interval */
> >> +
> >> if (data->ver == TMU_VER1) {
> >> - tmu_write(data, TMTMIR_DEFAULT,
> >> &data->regs->tmtmir);
> >> + regmap_write(data->regmap, REGS_TMTMIR,
> >> TMTMIR_DEFAULT);
> >> } else {
> >> - tmu_write(data, TMTMIR_DEFAULT,
> >> &data->regs_v2->tmtmir);
> >> - tmu_write(data, TEUMR0_V2,
> &data->regs_v2->teumr0);
> >> + regmap_write(data->regmap, REGS_V2_TMTMIR,
> >> TMTMIR_DEFAULT);
> >> + regmap_write(data->regmap, REGS_V2_TEUMR(0),
> >> TEUMR0_V2);
> >> }
> >>
> >> /* Disable monitoring */
> >> - tmu_write(data, TMR_DISABLE, &data->regs->tmr);
> >> + regmap_write(data->regmap, REGS_TMR, TMR_DISABLE);
> >> }
> >>
> >> +static const struct regmap_range qoriq_yes_ranges[] = {
> >> + regmap_reg_range(REGS_TMR, REGS_TSCFGR),
> >> + regmap_reg_range(REGS_TTRnCR(0), REGS_TTRnCR(3)),
> >> + regmap_reg_range(REGS_V2_TEUMR(0), REGS_V2_TEUMR(2)),
> >> + regmap_reg_range(REGS_IPBRR(0), REGS_IPBRR(1)),
> >> + /* Read only registers below */
> >> + regmap_reg_range(REGS_TRITSR(0), REGS_TRITSR(15)), };
> >> +
> >> +static const struct regmap_access_table qoriq_wr_table = {
> >> + .yes_ranges = qoriq_yes_ranges,
> >> + .n_yes_ranges = ARRAY_SIZE(qoriq_yes_ranges) - 1,
> >> +};
> >> +
> >> +static const struct regmap_access_table qoriq_rd_table = {
> >> + .yes_ranges = qoriq_yes_ranges,
> >> + .n_yes_ranges = ARRAY_SIZE(qoriq_yes_ranges),
> >> +};
> >> +
> >> static int qoriq_tmu_probe(struct platform_device *pdev) {
> >> int ret;
> >> @@ -265,18 +218,37 @@ static int qoriq_tmu_probe(struct
> >> platform_device
> >> *pdev)
> >> struct qoriq_tmu_data *data;
> >> struct device_node *np = pdev->dev.of_node;
> >> struct device *dev = &pdev->dev;
> >> + const bool little_endian = of_property_read_bool(np,
> >> "little-endian");
> >> + const enum regmap_endian format_endian =
> >> + little_endian ? REGMAP_ENDIAN_LITTLE :
> >> REGMAP_ENDIAN_BIG;
> >> + const struct regmap_config regmap_config = {
> >> + .reg_bits = 32,
> >> + .val_bits = 32,
> >> + .reg_stride = 4,
> >> + .rd_table = &qoriq_rd_table,
> >> + .wr_table = &qoriq_wr_table,
> >> + .val_format_endian = format_endian,
> >> + .max_register = SZ_4K,
> >> + };
> >> + void __iomem *base;
> >>
> >> data = devm_kzalloc(dev, sizeof(struct qoriq_tmu_data),
> >> GFP_KERNEL);
> >> if (!data)
> >> return -ENOMEM;
> >>
> >> - data->little_endian = of_property_read_bool(np, "little-endian");
> >> -
> >> - data->regs = devm_platform_ioremap_resource(pdev, 0);
> >> - if (IS_ERR(data->regs)) {
> >> + base = devm_platform_ioremap_resource(pdev, 0);
> >> + ret = PTR_ERR_OR_ZERO(base);
> >> + if (ret) {
> >> dev_err(dev, "Failed to get memory region\n");
> >> - return PTR_ERR(data->regs);
> >> + return ret;
> >> + }
> >> +
> >> + data->regmap = devm_regmap_init_mmio(dev, base,
> >> ®map_config);
> >> + ret = PTR_ERR_OR_ZERO(data->regmap);
> >> + if (ret) {
> >> + dev_err(dev, "Failed to init regmap (%d)\n", ret);
> >> + return ret;
> >> }
> >>
> >> data->clk = devm_clk_get_optional(dev, NULL); @@ -290,10
> >> +262,12 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
> >> }
> >>
> >> /* version register offset at: 0xbf8 on both v1 and v2 */
> >> - ver = tmu_read(data, &data->regs->ipbrr0);
> >> + ret = regmap_read(data->regmap, REGS_IPBRR(0), &ver);
> >> + if (ret) {
> >> + dev_err(&pdev->dev, "Failed to read IP block
> version\n");
> >> + return ret;
> >> + }
> >> data->ver = (ver >> 8) & 0xff;
> >> - if (data->ver == TMU_VER2)
> >> - data->regs_v2 = (void __iomem *)data->regs;
> >>
> >> qoriq_tmu_init_device(data); /* TMU initialization */
> >>
> >> @@ -323,7 +297,7 @@ static int qoriq_tmu_remove(struct
> >> platform_device
> >> *pdev)
> >> struct qoriq_tmu_data *data = platform_get_drvdata(pdev);
> >>
> >> /* Disable monitoring */
> >> - tmu_write(data, TMR_DISABLE, &data->regs->tmr);
> >> + regmap_write(data->regmap, REGS_TMR, TMR_DISABLE);
> >>
> >> clk_disable_unprepare(data->clk);
> >>
> >> @@ -332,13 +306,12 @@ static int qoriq_tmu_remove(struct
> >> platform_device *pdev)
> >>
> >> static int __maybe_unused qoriq_tmu_suspend(struct device *dev) {
> >> - u32 tmr;
> >> struct qoriq_tmu_data *data = dev_get_drvdata(dev);
> >> + int ret;
> >>
> >> - /* Disable monitoring */
> >> - tmr = tmu_read(data, &data->regs->tmr);
> >> - tmr &= ~TMR_ME;
> >> - tmu_write(data, tmr, &data->regs->tmr);
> >> + ret = regmap_update_bits(data->regmap, REGS_TMR,
> TMR_ME,
> >> 0);
> >> + if (ret)
> >> + return ret;
> >>
> >> clk_disable_unprepare(data->clk);
> >>
> >> @@ -347,7 +320,6 @@ static int __maybe_unused
> >> qoriq_tmu_suspend(struct device *dev)
> >>
> >> static int __maybe_unused qoriq_tmu_resume(struct device *dev) {
> >> - u32 tmr;
> >> int ret;
> >> struct qoriq_tmu_data *data = dev_get_drvdata(dev);
> >>
> >> @@ -356,11 +328,7 @@ static int __maybe_unused
> >> qoriq_tmu_resume(struct device *dev)
> >> return ret;
> >>
> >> /* Enable monitoring */
> >> - tmr = tmu_read(data, &data->regs->tmr);
> >> - tmr |= TMR_ME;
> >> - tmu_write(data, tmr, &data->regs->tmr);
> >> -
> >> - return 0;
> >> + return regmap_update_bits(data->regmap, REGS_TMR,
> TMR_ME,
> >> + TMR_ME);
> >> }
> >>
> >> static SIMPLE_DEV_PM_OPS(qoriq_tmu_pm_ops,
> >> --
> >> 2.21.0
> >
>
>
> --
>
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