From: Eduardo Valentin <eduardo.valentin@ti.com>
To: gregkh@linuxfoundation.org
Cc: devel@driverdev.osuosl.org, linux-omap@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Eduardo Valentin <eduardo.valentin@ti.com>
Subject: [PATCH 07/50] staging: omap-thermal: introduce RMW_BITS macro
Date: Fri, 15 Mar 2013 08:59:55 -0400 [thread overview]
Message-ID: <1363352438-15935-8-git-send-email-eduardo.valentin@ti.com> (raw)
In-Reply-To: <1363352438-15935-1-git-send-email-eduardo.valentin@ti.com>
This patch introduce a macro to read, update, write bitfields.
It will be specific to bandgap data structures.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
---
drivers/staging/omap-thermal/omap-bandgap.c | 178 +++++++--------------------
1 files changed, 46 insertions(+), 132 deletions(-)
diff --git a/drivers/staging/omap-thermal/omap-bandgap.c b/drivers/staging/omap-thermal/omap-bandgap.c
index 9f2d7cc..1c1b905 100644
--- a/drivers/staging/omap-thermal/omap-bandgap.c
+++ b/drivers/staging/omap-thermal/omap-bandgap.c
@@ -52,25 +52,29 @@ static void omap_bandgap_writel(struct omap_bandgap *bg_ptr, u32 val, u32 reg)
writel(val, bg_ptr->base + reg);
}
+/* update bits, value will be shifted */
+#define RMW_BITS(bg_ptr, id, reg, mask, val) \
+do { \
+ struct temp_sensor_registers *t; \
+ u32 r; \
+ \
+ t = bg_ptr->conf->sensors[(id)].registers; \
+ r = omap_bandgap_readl(bg_ptr, t->reg); \
+ r &= ~t->mask; \
+ r |= (val) << __ffs(t->mask); \
+ omap_bandgap_writel(bg_ptr, r, t->reg); \
+} while (0)
+
static int omap_bandgap_power(struct omap_bandgap *bg_ptr, bool on)
{
- struct temp_sensor_registers *tsr;
int i;
- u32 ctrl;
if (!OMAP_BANDGAP_HAS(bg_ptr, POWER_SWITCH))
return 0;
- for (i = 0; i < bg_ptr->conf->sensor_count; i++) {
- tsr = bg_ptr->conf->sensors[i].registers;
- ctrl = omap_bandgap_readl(bg_ptr, tsr->temp_sensor_ctrl);
- ctrl &= ~tsr->bgap_tempsoff_mask;
+ for (i = 0; i < bg_ptr->conf->sensor_count; i++)
/* active on 0 */
- ctrl |= !on << __ffs(tsr->bgap_tempsoff_mask);
-
- /* write BGAP_TEMPSOFF should be reset to 0 */
- omap_bandgap_writel(bg_ptr, ctrl, tsr->temp_sensor_ctrl);
- }
+ RMW_BITS(bg_ptr, i, temp_sensor_ctrl, bgap_tempsoff_mask, !on);
return 0;
}
@@ -78,15 +82,13 @@ static int omap_bandgap_power(struct omap_bandgap *bg_ptr, bool on)
static u32 omap_bandgap_read_temp(struct omap_bandgap *bg_ptr, int id)
{
struct temp_sensor_registers *tsr;
- u32 temp, ctrl, reg;
+ u32 temp, reg;
tsr = bg_ptr->conf->sensors[id].registers;
reg = tsr->temp_sensor_ctrl;
if (OMAP_BANDGAP_HAS(bg_ptr, FREEZE_BIT)) {
- ctrl = omap_bandgap_readl(bg_ptr, tsr->bgap_mask_ctrl);
- ctrl |= tsr->mask_freeze_mask;
- omap_bandgap_writel(bg_ptr, ctrl, tsr->bgap_mask_ctrl);
+ RMW_BITS(bg_ptr, id, bgap_mask_ctrl, mask_freeze_mask, 1);
/*
* In case we cannot read from cur_dtemp / dtemp_0,
* then we read from the last valid temp read
@@ -98,11 +100,8 @@ static u32 omap_bandgap_read_temp(struct omap_bandgap *bg_ptr, int id)
temp = omap_bandgap_readl(bg_ptr, reg);
temp &= tsr->bgap_dtemp_mask;
- if (OMAP_BANDGAP_HAS(bg_ptr, FREEZE_BIT)) {
- ctrl = omap_bandgap_readl(bg_ptr, tsr->bgap_mask_ctrl);
- ctrl &= ~tsr->mask_freeze_mask;
- omap_bandgap_writel(bg_ptr, ctrl, tsr->bgap_mask_ctrl);
- }
+ if (OMAP_BANDGAP_HAS(bg_ptr, FREEZE_BIT))
+ RMW_BITS(bg_ptr, id, bgap_mask_ctrl, mask_freeze_mask, 0);
return temp;
}
@@ -290,37 +289,6 @@ int temp_sensor_configure_thot(struct omap_bandgap *bg_ptr, int id, int t_hot)
return temp_sensor_unmask_interrupts(bg_ptr, id, t_hot, cold);
}
-/* Talert Thot and Tcold thresholds. Call it only if HAS(TALERT) is set */
-static
-int temp_sensor_init_talert_thresholds(struct omap_bandgap *bg_ptr, int id,
- int t_hot, int t_cold)
-{
- struct temp_sensor_registers *tsr;
- u32 reg_val, thresh_val;
-
- tsr = bg_ptr->conf->sensors[id].registers;
- thresh_val = omap_bandgap_readl(bg_ptr, tsr->bgap_threshold);
-
- /* write the new t_cold value */
- reg_val = thresh_val & ~tsr->threshold_tcold_mask;
- reg_val |= (t_cold << __ffs(tsr->threshold_tcold_mask));
- omap_bandgap_writel(bg_ptr, reg_val, tsr->bgap_threshold);
-
- thresh_val = omap_bandgap_readl(bg_ptr, tsr->bgap_threshold);
-
- /* write the new t_hot value */
- reg_val = thresh_val & ~tsr->threshold_thot_mask;
- reg_val |= (t_hot << __ffs(tsr->threshold_thot_mask));
- omap_bandgap_writel(bg_ptr, reg_val, tsr->bgap_threshold);
-
- reg_val = omap_bandgap_readl(bg_ptr, tsr->bgap_mask_ctrl);
- reg_val |= tsr->mask_hot_mask;
- reg_val |= tsr->mask_cold_mask;
- omap_bandgap_writel(bg_ptr, reg_val, tsr->bgap_mask_ctrl);
-
- return 0;
-}
-
/* Talert Tcold threshold. Call it only if HAS(TALERT) is set */
static
int temp_sensor_configure_tcold(struct omap_bandgap *bg_ptr, int id,
@@ -359,54 +327,6 @@ int temp_sensor_configure_tcold(struct omap_bandgap *bg_ptr, int id,
return temp_sensor_unmask_interrupts(bg_ptr, id, hot, t_cold);
}
-/* This is Tshut Thot config. Call it only if HAS(TSHUT_CONFIG) is set */
-static int temp_sensor_configure_tshut_hot(struct omap_bandgap *bg_ptr,
- int id, int tshut_hot)
-{
- struct temp_sensor_registers *tsr;
- u32 reg_val;
-
- tsr = bg_ptr->conf->sensors[id].registers;
- reg_val = omap_bandgap_readl(bg_ptr, tsr->tshut_threshold);
- reg_val &= ~tsr->tshut_hot_mask;
- reg_val |= tshut_hot << __ffs(tsr->tshut_hot_mask);
- omap_bandgap_writel(bg_ptr, reg_val, tsr->tshut_threshold);
-
- return 0;
-}
-
-/* This is Tshut Tcold config. Call it only if HAS(TSHUT_CONFIG) is set */
-static int temp_sensor_configure_tshut_cold(struct omap_bandgap *bg_ptr,
- int id, int tshut_cold)
-{
- struct temp_sensor_registers *tsr;
- u32 reg_val;
-
- tsr = bg_ptr->conf->sensors[id].registers;
- reg_val = omap_bandgap_readl(bg_ptr, tsr->tshut_threshold);
- reg_val &= ~tsr->tshut_cold_mask;
- reg_val |= tshut_cold << __ffs(tsr->tshut_cold_mask);
- omap_bandgap_writel(bg_ptr, reg_val, tsr->tshut_threshold);
-
- return 0;
-}
-
-/* This is counter config. Call it only if HAS(COUNTER) is set */
-static int configure_temp_sensor_counter(struct omap_bandgap *bg_ptr, int id,
- u32 counter)
-{
- struct temp_sensor_registers *tsr;
- u32 val;
-
- tsr = bg_ptr->conf->sensors[id].registers;
- val = omap_bandgap_readl(bg_ptr, tsr->bgap_counter);
- val &= ~tsr->counter_mask;
- val |= counter << __ffs(tsr->counter_mask);
- omap_bandgap_writel(bg_ptr, val, tsr->bgap_counter);
-
- return 0;
-}
-
#define bandgap_is_valid(b) \
(!IS_ERR_OR_NULL(b))
#define bandgap_is_valid_sensor_id(b, i) \
@@ -628,7 +548,7 @@ int omap_bandgap_write_update_interval(struct omap_bandgap *bg_ptr,
interval = interval * bg_ptr->clk_rate / 1000;
mutex_lock(&bg_ptr->bg_mutex);
- configure_temp_sensor_counter(bg_ptr, id, interval);
+ RMW_BITS(bg_ptr, id, bgap_counter, counter_mask, interval);
mutex_unlock(&bg_ptr->bg_mutex);
return 0;
@@ -645,7 +565,6 @@ int omap_bandgap_write_update_interval(struct omap_bandgap *bg_ptr,
int omap_bandgap_read_temperature(struct omap_bandgap *bg_ptr, int id,
int *temperature)
{
- struct temp_sensor_registers *tsr;
u32 temp;
int ret;
@@ -653,7 +572,6 @@ int omap_bandgap_read_temperature(struct omap_bandgap *bg_ptr, int id,
if (ret)
return ret;
- tsr = bg_ptr->conf->sensors[id].registers;
mutex_lock(&bg_ptr->bg_mutex);
temp = omap_bandgap_read_temp(bg_ptr, id);
mutex_unlock(&bg_ptr->bg_mutex);
@@ -708,31 +626,23 @@ void *omap_bandgap_get_sensor_data(struct omap_bandgap *bg_ptr, int id)
static int
omap_bandgap_force_single_read(struct omap_bandgap *bg_ptr, int id)
{
- struct temp_sensor_registers *tsr;
u32 temp = 0, counter = 1000;
- tsr = bg_ptr->conf->sensors[id].registers;
/* Select single conversion mode */
- if (OMAP_BANDGAP_HAS(bg_ptr, MODE_CONFIG)) {
- temp = omap_bandgap_readl(bg_ptr, tsr->bgap_mode_ctrl);
- temp &= ~(1 << __ffs(tsr->mode_ctrl_mask));
- omap_bandgap_writel(bg_ptr, temp, tsr->bgap_mode_ctrl);
- }
+ if (OMAP_BANDGAP_HAS(bg_ptr, MODE_CONFIG))
+ RMW_BITS(bg_ptr, id, bgap_mode_ctrl, mode_ctrl_mask, 0);
/* Start of Conversion = 1 */
- temp = omap_bandgap_readl(bg_ptr, tsr->temp_sensor_ctrl);
- temp |= 1 << __ffs(tsr->bgap_soc_mask);
- omap_bandgap_writel(bg_ptr, temp, tsr->temp_sensor_ctrl);
+ RMW_BITS(bg_ptr, id, temp_sensor_ctrl, bgap_soc_mask, 1);
/* Wait until DTEMP is updated */
temp = omap_bandgap_read_temp(bg_ptr, id);
while ((temp == 0) && --counter)
temp = omap_bandgap_read_temp(bg_ptr, id);
+ /* REVISIT: Check correct condition for end of conversion */
/* Start of Conversion = 0 */
- temp = omap_bandgap_readl(bg_ptr, tsr->temp_sensor_ctrl);
- temp &= ~(1 << __ffs(tsr->bgap_soc_mask));
- omap_bandgap_writel(bg_ptr, temp, tsr->temp_sensor_ctrl);
+ RMW_BITS(bg_ptr, id, temp_sensor_ctrl, bgap_soc_mask, 0);
return 0;
}
@@ -745,17 +655,12 @@ omap_bandgap_force_single_read(struct omap_bandgap *bg_ptr, int id)
*/
static int enable_continuous_mode(struct omap_bandgap *bg_ptr)
{
- struct temp_sensor_registers *tsr;
int i;
- u32 val;
for (i = 0; i < bg_ptr->conf->sensor_count; i++) {
/* Perform a single read just before enabling continuous */
omap_bandgap_force_single_read(bg_ptr, i);
- tsr = bg_ptr->conf->sensors[i].registers;
- val = omap_bandgap_readl(bg_ptr, tsr->bgap_mode_ctrl);
- val |= 1 << __ffs(tsr->mode_ctrl_mask);
- omap_bandgap_writel(bg_ptr, val, tsr->bgap_mode_ctrl);
+ RMW_BITS(bg_ptr, i, bgap_mode_ctrl, mode_ctrl_mask, 1);
}
return 0;
@@ -955,22 +860,31 @@ int omap_bandgap_probe(struct platform_device *pdev)
/* Set default counter to 1 for now */
if (OMAP_BANDGAP_HAS(bg_ptr, COUNTER))
for (i = 0; i < bg_ptr->conf->sensor_count; i++)
- configure_temp_sensor_counter(bg_ptr, i, 1);
+ RMW_BITS(bg_ptr, i, bgap_counter, counter_mask, 1);
+ /* Set default thresholds for alert and shutdown */
for (i = 0; i < bg_ptr->conf->sensor_count; i++) {
struct temp_sensor_data *ts_data;
ts_data = bg_ptr->conf->sensors[i].ts_data;
- if (OMAP_BANDGAP_HAS(bg_ptr, TALERT))
- temp_sensor_init_talert_thresholds(bg_ptr, i,
- ts_data->t_hot,
- ts_data->t_cold);
+ if (OMAP_BANDGAP_HAS(bg_ptr, TALERT)) {
+ /* Set initial Talert thresholds */
+ RMW_BITS(bg_ptr, i, bgap_threshold,
+ threshold_tcold_mask, ts_data->t_cold);
+ RMW_BITS(bg_ptr, i, bgap_threshold,
+ threshold_thot_mask, ts_data->t_hot);
+ /* Enable the alert events */
+ RMW_BITS(bg_ptr, i, bgap_mask_ctrl, mask_hot_mask, 1);
+ RMW_BITS(bg_ptr, i, bgap_mask_ctrl, mask_cold_mask, 1);
+ }
+
if (OMAP_BANDGAP_HAS(bg_ptr, TSHUT_CONFIG)) {
- temp_sensor_configure_tshut_hot(bg_ptr, i,
- ts_data->tshut_hot);
- temp_sensor_configure_tshut_cold(bg_ptr, i,
- ts_data->tshut_cold);
+ /* Set initial Tshut thresholds */
+ RMW_BITS(bg_ptr, i, tshut_threshold,
+ tshut_hot_mask, ts_data->tshut_hot);
+ RMW_BITS(bg_ptr, i, tshut_threshold,
+ tshut_cold_mask, ts_data->tshut_cold);
}
}
@@ -980,8 +894,8 @@ int omap_bandgap_probe(struct platform_device *pdev)
/* Set .250 seconds time as default counter */
if (OMAP_BANDGAP_HAS(bg_ptr, COUNTER))
for (i = 0; i < bg_ptr->conf->sensor_count; i++)
- configure_temp_sensor_counter(bg_ptr, i,
- bg_ptr->clk_rate / 4);
+ RMW_BITS(bg_ptr, i, bgap_counter, counter_mask,
+ bg_ptr->clk_rate / 4);
/* Every thing is good? Then expose the sensors */
for (i = 0; i < bg_ptr->conf->sensor_count; i++) {
--
1.7.7.1.488.ge8e1c
next prev parent reply other threads:[~2013-03-15 13:03 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-15 12:59 [PATCH 00/50] staging: omap-thermal: several code refactoring Eduardo Valentin
2013-03-15 12:59 ` [PATCH 01/50] staging: omap-thermal: use BIT() macro Eduardo Valentin
2013-03-15 12:59 ` [PATCH 02/50] staging: omap-thermal: remove unused _SHIFT macros Eduardo Valentin
2013-03-15 12:59 ` [PATCH 03/50] staging: omap-thermal: create header for register, bitfields and definitions Eduardo Valentin
2013-03-15 12:59 ` [PATCH 04/50] staging: omap-thermal: update documentation of omap-bandgap.h Eduardo Valentin
2013-03-15 12:59 ` [PATCH 05/50] staging: omap-thermal: style cleanup on omap-bandgap.c Eduardo Valentin
2013-03-15 12:59 ` [PATCH 06/50] staging: omap-thermal: fix error checking Eduardo Valentin
2013-03-15 12:59 ` Eduardo Valentin [this message]
2013-03-15 21:09 ` [PATCH 07/50] staging: omap-thermal: introduce RMW_BITS macro Dan Carpenter
2013-03-16 12:36 ` Eduardo Valentin
2013-03-16 14:00 ` Dan Carpenter
2013-03-15 12:59 ` [PATCH 08/50] staging: omap-thermal: add documentation for register access functions Eduardo Valentin
2013-03-15 12:59 ` [PATCH 09/50] staging: omap-thermal: make a omap_bandgap_power with only one exit point Eduardo Valentin
2013-03-15 21:22 ` Dan Carpenter
2013-03-16 12:39 ` Eduardo Valentin
2013-03-16 13:56 ` Dan Carpenter
2013-03-15 12:59 ` [PATCH 10/50] staging: omap-thermal: add documentation for omap_bandgap_power Eduardo Valentin
2013-03-15 12:59 ` [PATCH 11/50] staging: omap-thermal: add documentation for omap_bandgap_read_temp Eduardo Valentin
2013-03-15 13:00 ` [PATCH 12/50] staging: omap-thermal: rename talert handler Eduardo Valentin
2013-03-15 13:00 ` [PATCH 13/50] staging: omap-thermal: update documentation for talert irq handler Eduardo Valentin
2013-03-15 13:00 ` [PATCH 14/50] staging: omap-thermal: update tshut IRQ handler documentation Eduardo Valentin
2013-03-15 13:00 ` [PATCH 15/50] staging: omap-thermal: remove duplicated code Eduardo Valentin
2013-03-15 13:00 ` [PATCH 16/50] staging: omap-thermal: read status only once inside alert IRQ Eduardo Valentin
2013-03-15 13:00 ` [PATCH 17/50] staging: omap-thermal: add a section of register manipulation Eduardo Valentin
2013-03-15 13:00 ` [PATCH 18/50] staging: omap-thermal: section of basic helpers Eduardo Valentin
2013-03-15 13:00 ` [PATCH 19/50] staging: omap-thermal: IRQ handler section Eduardo Valentin
2013-03-15 13:00 ` [PATCH 20/50] staging: omap-thermal: ADC section Eduardo Valentin
2013-03-15 13:00 ` [PATCH 21/50] staging: omap-thermal: name adc_to_temp_conversion in a better way Eduardo Valentin
2013-03-15 13:00 ` [PATCH 22/50] staging: omap-thermal: rewrite omap_bandgap_adc_to_mcelsius on kernel coding style Eduardo Valentin
2013-03-16 8:27 ` Dan Carpenter
2013-03-15 13:00 ` [PATCH 23/50] staging: omap-thermal: add documentation for omap_bandgap_adc_to_mcelsius Eduardo Valentin
2013-03-15 13:00 ` [PATCH 24/50] staging: omap-thermal: name temp_to_adc_conversion in a better way Eduardo Valentin
2013-03-15 13:00 ` [PATCH 25/50] staging: omap-thermal: rewrite omap_bandgap_mcelsius_to_adc on kernel coding style Eduardo Valentin
2013-03-16 8:33 ` Dan Carpenter
2013-03-15 13:00 ` [PATCH 26/50] staging: omap-thermal: move conv table limits out of sensor data Eduardo Valentin
2013-03-15 13:00 ` [PATCH 27/50] staging: omap-thermal: add documentation for omap_bandgap_mcelsius_to_adc Eduardo Valentin
2013-03-15 13:00 ` [PATCH 28/50] staging: omap-thermal: rename add_hyst to omap_bandgap_add_hyst Eduardo Valentin
2013-03-15 13:00 ` [PATCH 29/50] staging: omap-thermal: document omap_bandgap_add_hyst function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 30/50] staging: omap-thermal: threshold manipulation section Eduardo Valentin
2013-03-15 13:00 ` [PATCH 31/50] staging: omap-thermal: refactor temp_sensor_unmask_interrupts Eduardo Valentin
2013-03-15 13:00 ` [PATCH 32/50] staging: omap-thermal: update omap_bandgap_unmask_interrupts documentation Eduardo Valentin
2013-03-15 13:00 ` [PATCH 33/50] staging: omap-thermal: refactor APIs handling threshold values Eduardo Valentin
2013-03-16 8:39 ` Dan Carpenter
2013-03-16 12:49 ` Eduardo Valentin
2013-03-16 13:58 ` Dan Carpenter
2013-03-15 13:00 ` [PATCH 34/50] staging: omap-thermal: device initialization section Eduardo Valentin
2013-03-15 13:00 ` [PATCH 35/50] staging: omap-thermal: section of device driver callbacks Eduardo Valentin
2013-03-15 13:00 ` [PATCH 36/50] staging: omap-thermal: rename enable_continuous_mode Eduardo Valentin
2013-03-15 13:00 ` [PATCH 37/50] staging: omap-thermal: update omap_bandgap_set_continous_mode documentation Eduardo Valentin
2013-03-15 13:00 ` [PATCH 38/50] staging: omap-thermal: document omap_bandgap_force_single_read Eduardo Valentin
2013-03-15 13:00 ` [PATCH 39/50] staging: omap-thermal: document omap_bandgap_update_alert_threshold function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 40/50] staging: omap-thermal: document _omap_bandgap_write_threshold function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 41/50] staging: omap-thermal: document _omap_bandgap_read_threshold function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 42/50] staging: omap-thermal: document omap_bandgap_tshut_init function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 43/50] staging: omap-thermal: document omap_bandgap_alert_init function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 44/50] staging: omap-thermal: document omap_bandgap_build function Eduardo Valentin
2013-03-15 13:00 ` [PATCH 45/50] staging: omap-thermal: change Kconfig dependency method Eduardo Valentin
2013-03-15 13:00 ` [PATCH 46/50] staging: Add a MAINTAINERS entry for TI bandgap and thermal driver Eduardo Valentin
2013-03-15 13:00 ` [PATCH 47/50] staging: omap-thermal: switch mutex to spinlock inside omap-bandgap Eduardo Valentin
2013-03-16 8:59 ` Dan Carpenter
2013-03-16 12:41 ` Eduardo Valentin
2013-03-16 14:22 ` Dan Carpenter
2013-03-15 13:00 ` [PATCH 48/50] staging: omap-thermal: remove TODO entry suggesting regmap usage Eduardo Valentin
2013-03-15 13:00 ` [PATCH 49/50] staging: omap-thermal: remove TODO entry for exposed APIs Eduardo Valentin
2013-03-15 13:00 ` [PATCH 50/50] staging: omap-thermal: add documentation for omap_bandgap_validate Eduardo Valentin
2013-03-16 9:05 ` [PATCH 00/50] staging: omap-thermal: several code refactoring Dan Carpenter
2013-03-16 12:46 ` Eduardo Valentin
2013-03-16 16:16 ` Greg KH
2013-03-18 14:44 ` Eduardo Valentin
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