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Date: Thu, 9 Aug 2018 12:32:48 -0700
From: Matthias Kaehlcke <mka@...omium.org>
To: Amit Kucheria <amit.kucheria@...aro.org>
Cc: linux-kernel@...r.kernel.org, rnayak@...eaurora.org,
linux-arm-msm@...r.kernel.org, bjorn.andersson@...aro.org,
edubezval@...il.com, smohanad@...eaurora.org,
andy.gross@...aro.org, dianders@...omium.org,
Zhang Rui <rui.zhang@...el.com>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v1 05/10] thermal: tsens: Rename map field in order to
add a second address map
On Thu, Aug 09, 2018 at 06:02:37PM +0530, Amit Kucheria wrote:
> The TSENS driver currently only uses a limited set of registers from the TM
> address space. So it was ok to map just that set of registers and call it
> "map".
>
> We'd now like to map a second set: SROT registers to introduce new
> functionality. Rename the "map" field to a more appropriate "tm_map".
>
> The 8960 doesn't have a clear split between TM and SROT registers. To avoid
> complicating the data structure, it will switchover to using tm_map for its
> maps.
>
> There is no functional change with this patch.
>
> Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
> ---
> drivers/thermal/qcom/tsens-8960.c | 30 ++++++++++++++---------------
> drivers/thermal/qcom/tsens-common.c | 17 ++++++++--------
> drivers/thermal/qcom/tsens-v2.c | 6 +++---
> drivers/thermal/qcom/tsens.h | 2 +-
> 4 files changed, 27 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c
> index 4af76de7dc2e..0f0adb302a7b 100644
> --- a/drivers/thermal/qcom/tsens-8960.c
> +++ b/drivers/thermal/qcom/tsens-8960.c
> @@ -60,7 +60,7 @@ static int suspend_8960(struct tsens_device *tmdev)
> {
> int ret;
> unsigned int mask;
> - struct regmap *map = tmdev->map;
> + struct regmap *map = tmdev->tm_map;
>
> ret = regmap_read(map, THRESHOLD_ADDR, &tmdev->ctx.threshold);
> if (ret)
> @@ -85,7 +85,7 @@ static int suspend_8960(struct tsens_device *tmdev)
> static int resume_8960(struct tsens_device *tmdev)
> {
> int ret;
> - struct regmap *map = tmdev->map;
> + struct regmap *map = tmdev->tm_map;
>
> ret = regmap_update_bits(map, CNTL_ADDR, SW_RST, SW_RST);
> if (ret)
> @@ -117,12 +117,12 @@ static int enable_8960(struct tsens_device *tmdev, int id)
> int ret;
> u32 reg, mask;
>
> - ret = regmap_read(tmdev->map, CNTL_ADDR, ®);
> + ret = regmap_read(tmdev->tm_map, CNTL_ADDR, ®);
> if (ret)
> return ret;
>
> mask = BIT(id + SENSOR0_SHIFT);
> - ret = regmap_write(tmdev->map, CNTL_ADDR, reg | SW_RST);
> + ret = regmap_write(tmdev->tm_map, CNTL_ADDR, reg | SW_RST);
> if (ret)
> return ret;
>
> @@ -131,7 +131,7 @@ static int enable_8960(struct tsens_device *tmdev, int id)
> else
> reg |= mask | SLP_CLK_ENA_8660 | EN;
>
> - ret = regmap_write(tmdev->map, CNTL_ADDR, reg);
> + ret = regmap_write(tmdev->tm_map, CNTL_ADDR, reg);
> if (ret)
> return ret;
>
> @@ -148,7 +148,7 @@ static void disable_8960(struct tsens_device *tmdev)
> mask <<= SENSOR0_SHIFT;
> mask |= EN;
>
> - ret = regmap_read(tmdev->map, CNTL_ADDR, ®_cntl);
> + ret = regmap_read(tmdev->tm_map, CNTL_ADDR, ®_cntl);
> if (ret)
> return;
>
> @@ -159,7 +159,7 @@ static void disable_8960(struct tsens_device *tmdev)
> else
> reg_cntl &= ~SLP_CLK_ENA_8660;
>
> - regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
> + regmap_write(tmdev->tm_map, CNTL_ADDR, reg_cntl);
> }
>
> static int init_8960(struct tsens_device *tmdev)
> @@ -167,8 +167,8 @@ static int init_8960(struct tsens_device *tmdev)
> int ret, i;
> u32 reg_cntl;
>
> - tmdev->map = dev_get_regmap(tmdev->dev, NULL);
> - if (!tmdev->map)
> + tmdev->tm_map = dev_get_regmap(tmdev->dev, NULL);
> + if (!tmdev->tm_map)
> return -ENODEV;
>
> /*
> @@ -184,14 +184,14 @@ static int init_8960(struct tsens_device *tmdev)
> }
>
> reg_cntl = SW_RST;
> - ret = regmap_update_bits(tmdev->map, CNTL_ADDR, SW_RST, reg_cntl);
> + ret = regmap_update_bits(tmdev->tm_map, CNTL_ADDR, SW_RST, reg_cntl);
> if (ret)
> return ret;
>
> if (tmdev->num_sensors > 1) {
> reg_cntl |= SLP_CLK_ENA | (MEASURE_PERIOD << 18);
> reg_cntl &= ~SW_RST;
> - ret = regmap_update_bits(tmdev->map, CONFIG_ADDR,
> + ret = regmap_update_bits(tmdev->tm_map, CONFIG_ADDR,
> CONFIG_MASK, CONFIG);
> } else {
> reg_cntl |= SLP_CLK_ENA_8660 | (MEASURE_PERIOD << 16);
> @@ -200,12 +200,12 @@ static int init_8960(struct tsens_device *tmdev)
> }
>
> reg_cntl |= GENMASK(tmdev->num_sensors - 1, 0) << SENSOR0_SHIFT;
> - ret = regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
> + ret = regmap_write(tmdev->tm_map, CNTL_ADDR, reg_cntl);
> if (ret)
> return ret;
>
> reg_cntl |= EN;
> - ret = regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
> + ret = regmap_write(tmdev->tm_map, CNTL_ADDR, reg_cntl);
> if (ret)
> return ret;
>
> @@ -252,12 +252,12 @@ static int get_temp_8960(struct tsens_device *tmdev, int id, int *temp)
>
> timeout = jiffies + usecs_to_jiffies(TIMEOUT_US);
> do {
> - ret = regmap_read(tmdev->map, INT_STATUS_ADDR, &trdy);
> + ret = regmap_read(tmdev->tm_map, INT_STATUS_ADDR, &trdy);
> if (ret)
> return ret;
> if (!(trdy & TRDY_MASK))
> continue;
> - ret = regmap_read(tmdev->map, s->status, &code);
> + ret = regmap_read(tmdev->tm_map, s->status, &code);
> if (ret)
> return ret;
> *temp = code_to_mdegC(code, s);
> diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
> index 303e3fdaca98..0585084630b3 100644
> --- a/drivers/thermal/qcom/tsens-common.c
> +++ b/drivers/thermal/qcom/tsens-common.c
> @@ -99,8 +99,7 @@ int get_temp_common(struct tsens_device *tmdev, int id, int *temp)
> int last_temp = 0, ret;
>
> status_reg = tmdev->tm_offset + STATUS_OFFSET + s->hw_id * SN_ADDR_OFFSET;
> - ret = regmap_read(tmdev->map, status_reg, &code);
> -
> + ret = regmap_read(tmdev->tm_map, status_reg, &code);
> if (ret)
> return ret;
> last_temp = code & SN_ST_TEMP_MASK;
> @@ -118,7 +117,7 @@ static const struct regmap_config tsens_config = {
>
> int __init init_common(struct tsens_device *tmdev)
> {
> - void __iomem *base;
> + void __iomem *tm_base;
> struct resource *res;
> struct platform_device *op = of_find_device_by_node(tmdev->dev->of_node);
>
> @@ -134,13 +133,13 @@ int __init init_common(struct tsens_device *tmdev)
> }
>
> res = platform_get_resource(op, IORESOURCE_MEM, 0);
> - base = devm_ioremap_resource(&op->dev, res);
> - if (IS_ERR(base))
> - return PTR_ERR(base);
> + tm_base = devm_ioremap_resource(&op->dev, res);
> + if (IS_ERR(tm_base))
> + return PTR_ERR(tm_base);
>
> - tmdev->map = devm_regmap_init_mmio(tmdev->dev, base, &tsens_config);
> - if (IS_ERR(tmdev->map))
> - return PTR_ERR(tmdev->map);
> + tmdev->tm_map = devm_regmap_init_mmio(tmdev->dev, tm_base, &tsens_config);
> + if (IS_ERR(tmdev->tm_map))
> + return PTR_ERR(tmdev->tm_map);
>
> return 0;
> }
> diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
> index 44da02f594ac..1bdef92e4521 100644
> --- a/drivers/thermal/qcom/tsens-v2.c
> +++ b/drivers/thermal/qcom/tsens-v2.c
> @@ -21,7 +21,7 @@ static int get_temp_tsens_v2(struct tsens_device *tmdev, int id, int *temp)
> int ret;
>
> status_reg = tmdev->tm_offset + STATUS_OFFSET + s->hw_id * 4;
> - ret = regmap_read(tmdev->map, status_reg, &code);
> + ret = regmap_read(tmdev->tm_map, status_reg, &code);
> if (ret)
> return ret;
> last_temp = code & LAST_TEMP_MASK;
> @@ -29,7 +29,7 @@ static int get_temp_tsens_v2(struct tsens_device *tmdev, int id, int *temp)
> goto done;
>
> /* Try a second time */
> - ret = regmap_read(tmdev->map, status_reg, &code);
> + ret = regmap_read(tmdev->tm_map, status_reg, &code);
> if (ret)
> return ret;
> if (code & STATUS_VALID_BIT) {
> @@ -40,7 +40,7 @@ static int get_temp_tsens_v2(struct tsens_device *tmdev, int id, int *temp)
> }
>
> /* Try a third/last time */
> - ret = regmap_read(tmdev->map, status_reg, &code);
> + ret = regmap_read(tmdev->tm_map, status_reg, &code);
> if (ret)
> return ret;
> if (code & STATUS_VALID_BIT) {
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index 8207610f326a..58e98c4d3a8b 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -69,7 +69,7 @@ struct tsens_context {
> struct tsens_device {
> struct device *dev;
> u32 num_sensors;
> - struct regmap *map;
> + struct regmap *tm_map;
> u32 tm_offset;
> struct tsens_context ctx;
> const struct tsens_ops *ops;
Reviewed-by: Matthias Kaehlcke <mka@...omium.org>
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