答复: [2/2] mfd: max77620: Add low battery monitor support
Oh I know that issue and it should be fixed by: https://marc.info/?l=linux-kernel&m=154745840513141&w=3 The root cause is that max77620 doesn't have a dedicated gpio interrupt mask register, so the "mask_base" of max77620 gpio driver is 0, that's why regmap_add_irq_chip writes 0xFF to offset zero. Mark -邮件原件- 发件人: Billy Laws 发送时间: Tuesday, January 29, 2019 9:34 PM 收件人: Mark Zhang 抄送: Lee Jones ; linux-kernel@vger.kernel.org; linux-te...@vger.kernel.org; Laxman Dewangan ; Venkat Reddy Talla 主题: Re: [2/2] mfd: max77620: Add low battery monitor support It does, see this article https://blog.quendi.moe/2018/07/03/en-debugging-nintendo-switch-linux-power-management-battery-desync-edition/ On Tue, Jan 29, 2019 at 9:03 AM Mark Zhang wrote: > > On 1/29/2019 3:36 PM, Billy Laws wrote: > > Sure, that's fine with me, will send then this gets accepted. Two > > other things: you should probably set the reg to 0 if the property > > isn't specified as regmap_add_irqchip sets it to 0xff (basically all > > enabled on highest limit), and you haven't updated the dt-bindings. > > Billy, v2 is out, dt-bindings patches are added. > But after a second thought, I don't think regmap_add_irqchip might set > registers to 0xff. I mean, for 2 registers which this patch set > touches, they're not IRQ registers(mask/status/...), so > regmap_add_irqchip should not touch them so I didn't make changes to driver > codes in v2. > > Mark > > > > > On Tue, Jan 29, 2019 at 6:52 AM Mark Zhang wrote: > >> > >> On 1/27/2019 10:54 PM, Billy Laws wrote: > >>> >This patch adds PMIC configurations for low-battery >monitoring > >>> by handling max77620 register CNFGGLBL1. > >>> > > >>> It might be an idea to add lbhyst configuration here and support > >>> using custom lbdac values to specify a different cutoff point. > >> > >> Yeah this patch doesn't have support to program LBHYST & LBDAC > >> because according to our experiences, we don't have requirement to > >> modify them when low battery monitor support added. > >> > >> I think we can create a new patch to support these 2 fields in the > >> future when we really need them. Or you can create a patch if you > >> have requirement for them, is this OK to you Billy? > >> > >> Mark > >> > >>> > >>> See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 > >>> pg 46 > >>> >Signed-off-by: Laxman Dewangan > >>> >Signed-off-by: Venkat Reddy Talla > >>> >Signed-off-by: Mark Zhang > >>> >--- > >>> > drivers/mfd/max77620.c | 57 > >>> +- > >>> > 1 file changed, 56 insertions(+), 1 deletion(-) > >diff --git > >>> a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c >index > >>> f58143103185..9e50d145afd8 100644 > >>> >--- a/drivers/mfd/max77620.c > >>> >+++ b/drivers/mfd/max77620.c > >>> >@@ -474,6 +474,57 @@ static int > >>> max77620_init_backup_battery_charging(struct max77620_chip *chip) > >>> > return ret; > } > >+static int > >>> max77620_init_low_battery_monitor(struct max77620_chip *chip) >+{ > >>> >+ struct device *dev = chip->dev; >+ struct device_node *np; >+ > >>> bool pval; >+ u8 mask = 0; >+ u8 val = 0; >+ int ret; >+ >+ > >>> np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); > >>> >+ if (!np) { >+ dev_info(dev, "Low battery monitoring support > >>> disabled\n"); >+ return 0; >+ } >+ >+ pval = > >>> of_property_read_bool(np, "maxim,low-battery-dac-enable"); >+ if > >>> (pval) { >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ val |= > >>> MAX77620_CNFGGLBL1_LBDAC_EN; >+ } >+ >+ pval = > >>> of_property_read_bool(np, "maxim,low-battery-dac-disable"); >+ if > >>> (pval) >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ >+ pval = > >>> of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); > >>> >+ if (pval) { > >>> >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >+ val |= > >>> MAX77620_CNFGGLBL1_MPPLD; >+ } >+ >+ pval = > >>> of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); > >>> >+ if (pval) > &g
Re: [2/2] mfd: max77620: Add low battery monitor support
It does, see this article https://blog.quendi.moe/2018/07/03/en-debugging-nintendo-switch-linux-power-management-battery-desync-edition/ On Tue, Jan 29, 2019 at 9:03 AM Mark Zhang wrote: > > On 1/29/2019 3:36 PM, Billy Laws wrote: > > Sure, that's fine with me, will send then this gets accepted. Two > > other things: you should probably set the reg to 0 if the property > > isn't specified as regmap_add_irqchip sets it to 0xff (basically all > > enabled on highest limit), and you haven't updated the dt-bindings. > > Billy, v2 is out, dt-bindings patches are added. > But after a second thought, I don't think regmap_add_irqchip might set > registers to 0xff. I mean, for 2 registers which this patch set touches, > they're not IRQ registers(mask/status/...), so regmap_add_irqchip should > not touch them so I didn't make changes to driver codes in v2. > > Mark > > > > > On Tue, Jan 29, 2019 at 6:52 AM Mark Zhang wrote: > >> > >> On 1/27/2019 10:54 PM, Billy Laws wrote: > >>> >This patch adds PMIC configurations for low-battery > >>> >monitoring by handling max77620 register CNFGGLBL1. > >>> > > >>> It might be an idea to add lbhyst configuration here and support using > >>> custom lbdac values to specify a different cutoff point. > >> > >> Yeah this patch doesn't have support to program LBHYST & LBDAC because > >> according to our experiences, we don't have requirement to modify them > >> when low battery monitor support added. > >> > >> I think we can create a new patch to support these 2 fields in the future > >> when we really need them. Or you can create a patch if you have requirement > >> for them, is this OK to you Billy? > >> > >> Mark > >> > >>> > >>> See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg 46 > >>> >Signed-off-by: Laxman Dewangan > >>> >Signed-off-by: Venkat Reddy Talla > >>> >Signed-off-by: Mark Zhang > >>> >--- > >>> > drivers/mfd/max77620.c | 57 +- > >>> > 1 file changed, 56 insertions(+), 1 deletion(-) > >>> > > >>> >diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c > >>> >index f58143103185..9e50d145afd8 100644 > >>> >--- a/drivers/mfd/max77620.c > >>> >+++ b/drivers/mfd/max77620.c > >>> >@@ -474,6 +474,57 @@ static int > >>> max77620_init_backup_battery_charging(struct max77620_chip *chip) > >>> > return ret; > >>> > } > >>> > > >>> >+static int max77620_init_low_battery_monitor(struct max77620_chip > >>> *chip) > >>> >+{ > >>> >+ struct device *dev = chip->dev; > >>> >+ struct device_node *np; > >>> >+ bool pval; > >>> >+ u8 mask = 0; > >>> >+ u8 val = 0; > >>> >+ int ret; > >>> >+ > >>> >+ np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); > >>> >+ if (!np) { > >>> >+ dev_info(dev, "Low battery monitoring support disabled\n"); > >>> >+ return 0; > >>> >+ } > >>> >+ > >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); > >>> >+ if (pval) { > >>> >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > >>> >+ val |= MAX77620_CNFGGLBL1_LBDAC_EN; > >>> >+ } > >>> >+ > >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); > >>> >+ if (pval) > >>> >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > >>> >+ > >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); > >>> >+ if (pval) { > >>> >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > >>> >+ val |= MAX77620_CNFGGLBL1_MPPLD; > >>> >+ } > >>> >+ > >>> >+ pval = of_property_read_bool(np, > >>> "maxim,low-battery-shutdown-disable"); > >>> >+ if (pval) > >>> >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > >>> >+ > >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); > >>> >+ if (pval) { > >>> >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > >>> >+ val |= MAX77620_CNFGGLBL1_LBRSTEN; > >>> >+ } > >>> >+ > >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); > >>> >+ if (pval) > >>> >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > >>> >+ > >>> >+ ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, > >>> val); > >>> >+ if (ret < 0) > >>> >+ dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); > >>> >+ return ret; > >>> >+} > >>> >+ > >>> > static int max77620_read_es_version(struct max77620_chip *chip) > >>> > { > >>> > unsigned int val; > >>> >@@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client > >>> *client, > >>> > if (ret < 0) > >>> > return ret; > >>> > > >>> >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > >>> >+ ret = max77620_init_low_battery_monitor(chip); > >>> >+ if (ret < 0) > >>> >+ return ret; > >>> >+ > >>> >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > >>> > mfd_cells, n_mfd_cells, NULL, 0, > >>> > regmap_irq_get_domain(chip->top_irq_data)); > >>> > if (ret < 0) { > >>>
Re: [2/2] mfd: max77620: Add low battery monitor support
On 1/29/2019 3:36 PM, Billy Laws wrote: > Sure, that's fine with me, will send then this gets accepted. Two > other things: you should probably set the reg to 0 if the property > isn't specified as regmap_add_irqchip sets it to 0xff (basically all > enabled on highest limit), and you haven't updated the dt-bindings. Billy, v2 is out, dt-bindings patches are added. But after a second thought, I don't think regmap_add_irqchip might set registers to 0xff. I mean, for 2 registers which this patch set touches, they're not IRQ registers(mask/status/...), so regmap_add_irqchip should not touch them so I didn't make changes to driver codes in v2. Mark > > On Tue, Jan 29, 2019 at 6:52 AM Mark Zhang wrote: >> >> On 1/27/2019 10:54 PM, Billy Laws wrote: >>> >This patch adds PMIC configurations for low-battery >>> >monitoring by handling max77620 register CNFGGLBL1. >>> > >>> It might be an idea to add lbhyst configuration here and support using >>> custom lbdac values to specify a different cutoff point. >> >> Yeah this patch doesn't have support to program LBHYST & LBDAC because >> according to our experiences, we don't have requirement to modify them >> when low battery monitor support added. >> >> I think we can create a new patch to support these 2 fields in the future >> when we really need them. Or you can create a patch if you have requirement >> for them, is this OK to you Billy? >> >> Mark >> >>> >>> See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg 46 >>> >Signed-off-by: Laxman Dewangan >>> >Signed-off-by: Venkat Reddy Talla >>> >Signed-off-by: Mark Zhang >>> >--- >>> > drivers/mfd/max77620.c | 57 +- >>> > 1 file changed, 56 insertions(+), 1 deletion(-) >>> > >>> >diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c >>> >index f58143103185..9e50d145afd8 100644 >>> >--- a/drivers/mfd/max77620.c >>> >+++ b/drivers/mfd/max77620.c >>> >@@ -474,6 +474,57 @@ static int >>> max77620_init_backup_battery_charging(struct max77620_chip *chip) >>> > return ret; >>> > } >>> > >>> >+static int max77620_init_low_battery_monitor(struct max77620_chip *chip) >>> >+{ >>> >+ struct device *dev = chip->dev; >>> >+ struct device_node *np; >>> >+ bool pval; >>> >+ u8 mask = 0; >>> >+ u8 val = 0; >>> >+ int ret; >>> >+ >>> >+ np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); >>> >+ if (!np) { >>> >+ dev_info(dev, "Low battery monitoring support disabled\n"); >>> >+ return 0; >>> >+ } >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); >>> >+ if (pval) { >>> >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >>> >+ val |= MAX77620_CNFGGLBL1_LBDAC_EN; >>> >+ } >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); >>> >+ if (pval) >>> >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); >>> >+ if (pval) { >>> >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >>> >+ val |= MAX77620_CNFGGLBL1_MPPLD; >>> >+ } >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); >>> >+ if (pval) >>> >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); >>> >+ if (pval) { >>> >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >>> >+ val |= MAX77620_CNFGGLBL1_LBRSTEN; >>> >+ } >>> >+ >>> >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); >>> >+ if (pval) >>> >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >>> >+ >>> >+ ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); >>> >+ if (ret < 0) >>> >+ dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); >>> >+ return ret; >>> >+} >>> >+ >>> > static int max77620_read_es_version(struct max77620_chip *chip) >>> > { >>> > unsigned int val; >>> >@@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client *client, >>> > if (ret < 0) >>> > return ret; >>> > >>> >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, >>> >+ ret = max77620_init_low_battery_monitor(chip); >>> >+ if (ret < 0) >>> >+ return ret; >>> >+ >>> >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, >>> > mfd_cells, n_mfd_cells, NULL, 0, >>> > regmap_irq_get_domain(chip->top_irq_data)); >>> > if (ret < 0) { >>>
答复: [2/2] mfd: max77620: Add low battery monitor support
Oh yeah will do, thanks. -邮件原件- 发件人: Billy Laws 发送时间: Tuesday, January 29, 2019 3:36 PM 收件人: Mark Zhang 抄送: Lee Jones ; linux-kernel@vger.kernel.org; linux-te...@vger.kernel.org; Laxman Dewangan ; Venkat Reddy Talla 主题: Re: [2/2] mfd: max77620: Add low battery monitor support Sure, that's fine with me, will send then this gets accepted. Two other things: you should probably set the reg to 0 if the property isn't specified as regmap_add_irqchip sets it to 0xff (basically all enabled on highest limit), and you haven't updated the dt-bindings. On Tue, Jan 29, 2019 at 6:52 AM Mark Zhang wrote: > > On 1/27/2019 10:54 PM, Billy Laws wrote: > > >This patch adds PMIC configurations for low-battery >monitoring > > by handling max77620 register CNFGGLBL1. > > > > > It might be an idea to add lbhyst configuration here and support > > using custom lbdac values to specify a different cutoff point. > > Yeah this patch doesn't have support to program LBHYST & LBDAC because > according to our experiences, we don't have requirement to modify them > when low battery monitor support added. > > I think we can create a new patch to support these 2 fields in the > future when we really need them. Or you can create a patch if you have > requirement for them, is this OK to you Billy? > > Mark > > > > > See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg > > 46 > > >Signed-off-by: Laxman Dewangan > > >Signed-off-by: Venkat Reddy Talla > > >Signed-off-by: Mark Zhang > > >--- > > > drivers/mfd/max77620.c | 57 > > +- > > > 1 file changed, 56 insertions(+), 1 deletion(-) > >diff --git > > a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c >index > > f58143103185..9e50d145afd8 100644 > > >--- a/drivers/mfd/max77620.c > > >+++ b/drivers/mfd/max77620.c > > >@@ -474,6 +474,57 @@ static int > > max77620_init_backup_battery_charging(struct max77620_chip *chip) > > > return ret; > } > >+static int > > max77620_init_low_battery_monitor(struct max77620_chip *chip) >+{ > > >+ struct device *dev = chip->dev; >+ struct device_node *np; >+ > > bool pval; >+ u8 mask = 0; >+ u8 val = 0; >+ int ret; >+ >+ np > > = of_get_child_by_name(dev->of_node, "low-battery-monitor"); >+ if > > (!np) { >+ dev_info(dev, "Low battery monitoring support > > disabled\n"); >+ return 0; >+ } >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-dac-enable"); >+ if > > (pval) { >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ val |= > > MAX77620_CNFGGLBL1_LBDAC_EN; >+ } >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-dac-disable"); >+ if > > (pval) >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); > > >+ if (pval) { > > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >+ val |= > > MAX77620_CNFGGLBL1_MPPLD; >+ } >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); > > >+ if (pval) > > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-reset-enable"); > > >+ if (pval) { > > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >+ val |= > > MAX77620_CNFGGLBL1_LBRSTEN; >+ } >+ >+ pval = > > of_property_read_bool(np, "maxim,low-battery-reset-disable"); > > >+ if (pval) > > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >+ >+ ret = > > regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); > > >+ if (ret < 0) >+ dev_err(dev, "Reg CNFGGLBL1 update failed: > > %d\n", ret); >+ return ret; >+} >+ > static int > > max77620_read_es_version(struct max77620_chip *chip) > { > > > unsigned int val; >@@ -563,7 +614,11 @@ static int > > max77620_probe(struct i2c_client *client, > if (ret < 0) > > > return ret; > > > >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, >+ > > ret = max77620_init_low_battery_monitor(chip); > > >+ if (ret < 0) > > >+ return ret; > > >+ > > >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > > > mfd_cells, n_mfd_cells, NULL, 0, > > > regmap_irq_get_domain(chip->top_irq_data)); > > > if (ret < 0) { > >
Re: [2/2] mfd: max77620: Add low battery monitor support
Sure, that's fine with me, will send then this gets accepted. Two other things: you should probably set the reg to 0 if the property isn't specified as regmap_add_irqchip sets it to 0xff (basically all enabled on highest limit), and you haven't updated the dt-bindings. On Tue, Jan 29, 2019 at 6:52 AM Mark Zhang wrote: > > On 1/27/2019 10:54 PM, Billy Laws wrote: > > >This patch adds PMIC configurations for low-battery > > >monitoring by handling max77620 register CNFGGLBL1. > > > > > It might be an idea to add lbhyst configuration here and support using > > custom lbdac values to specify a different cutoff point. > > Yeah this patch doesn't have support to program LBHYST & LBDAC because > according to our experiences, we don't have requirement to modify them > when low battery monitor support added. > > I think we can create a new patch to support these 2 fields in the future > when we really need them. Or you can create a patch if you have requirement > for them, is this OK to you Billy? > > Mark > > > > > See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg 46 > > >Signed-off-by: Laxman Dewangan > > >Signed-off-by: Venkat Reddy Talla > > >Signed-off-by: Mark Zhang > > >--- > > > drivers/mfd/max77620.c | 57 +- > > > 1 file changed, 56 insertions(+), 1 deletion(-) > > > > > >diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c > > >index f58143103185..9e50d145afd8 100644 > > >--- a/drivers/mfd/max77620.c > > >+++ b/drivers/mfd/max77620.c > > >@@ -474,6 +474,57 @@ static int > > max77620_init_backup_battery_charging(struct max77620_chip *chip) > > > return ret; > > > } > > > > > >+static int max77620_init_low_battery_monitor(struct max77620_chip *chip) > > >+{ > > >+ struct device *dev = chip->dev; > > >+ struct device_node *np; > > >+ bool pval; > > >+ u8 mask = 0; > > >+ u8 val = 0; > > >+ int ret; > > >+ > > >+ np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); > > >+ if (!np) { > > >+ dev_info(dev, "Low battery monitoring support disabled\n"); > > >+ return 0; > > >+ } > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); > > >+ if (pval) { > > >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > > >+ val |= MAX77620_CNFGGLBL1_LBDAC_EN; > > >+ } > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); > > >+ if (pval) > > >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); > > >+ if (pval) { > > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > > >+ val |= MAX77620_CNFGGLBL1_MPPLD; > > >+ } > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); > > >+ if (pval) > > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); > > >+ if (pval) { > > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > > >+ val |= MAX77620_CNFGGLBL1_LBRSTEN; > > >+ } > > >+ > > >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); > > >+ if (pval) > > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > > >+ > > >+ ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); > > >+ if (ret < 0) > > >+ dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); > > >+ return ret; > > >+} > > >+ > > > static int max77620_read_es_version(struct max77620_chip *chip) > > > { > > > unsigned int val; > > >@@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client *client, > > > if (ret < 0) > > > return ret; > > > > > >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > > >+ ret = max77620_init_low_battery_monitor(chip); > > >+ if (ret < 0) > > >+ return ret; > > >+ > > >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > > > mfd_cells, n_mfd_cells, NULL, 0, > > > regmap_irq_get_domain(chip->top_irq_data)); > > > if (ret < 0) { > >
Re: [2/2] mfd: max77620: Add low battery monitor support
On 1/27/2019 10:54 PM, Billy Laws wrote: > >This patch adds PMIC configurations for low-battery > >monitoring by handling max77620 register CNFGGLBL1. > > > It might be an idea to add lbhyst configuration here and support using > custom lbdac values to specify a different cutoff point. Yeah this patch doesn't have support to program LBHYST & LBDAC because according to our experiences, we don't have requirement to modify them when low battery monitor support added. I think we can create a new patch to support these 2 fields in the future when we really need them. Or you can create a patch if you have requirement for them, is this OK to you Billy? Mark > > See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg 46 > >Signed-off-by: Laxman Dewangan > >Signed-off-by: Venkat Reddy Talla > >Signed-off-by: Mark Zhang > >--- > > drivers/mfd/max77620.c | 57 +- > > 1 file changed, 56 insertions(+), 1 deletion(-) > > > >diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c > >index f58143103185..9e50d145afd8 100644 > >--- a/drivers/mfd/max77620.c > >+++ b/drivers/mfd/max77620.c > >@@ -474,6 +474,57 @@ static int > max77620_init_backup_battery_charging(struct max77620_chip *chip) > > return ret; > > } > > > >+static int max77620_init_low_battery_monitor(struct max77620_chip *chip) > >+{ > >+ struct device *dev = chip->dev; > >+ struct device_node *np; > >+ bool pval; > >+ u8 mask = 0; > >+ u8 val = 0; > >+ int ret; > >+ > >+ np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); > >+ if (!np) { > >+ dev_info(dev, "Low battery monitoring support disabled\n"); > >+ return 0; > >+ } > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); > >+ if (pval) { > >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > >+ val |= MAX77620_CNFGGLBL1_LBDAC_EN; > >+ } > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); > >+ if (pval) > >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); > >+ if (pval) { > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > >+ val |= MAX77620_CNFGGLBL1_MPPLD; > >+ } > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); > >+ if (pval) > >+ mask |= MAX77620_CNFGGLBL1_MPPLD; > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); > >+ if (pval) { > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > >+ val |= MAX77620_CNFGGLBL1_LBRSTEN; > >+ } > >+ > >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); > >+ if (pval) > >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; > >+ > >+ ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); > >+ if (ret < 0) > >+ dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); > >+ return ret; > >+} > >+ > > static int max77620_read_es_version(struct max77620_chip *chip) > > { > > unsigned int val; > >@@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client *client, > > if (ret < 0) > > return ret; > > > >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > >+ ret = max77620_init_low_battery_monitor(chip); > >+ if (ret < 0) > >+ return ret; > >+ > >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > > mfd_cells, n_mfd_cells, NULL, 0, > > regmap_irq_get_domain(chip->top_irq_data)); > > if (ret < 0) { >
Re: [2/2] mfd: max77620: Add low battery monitor support
On 1/28/19, Lee Jones wrote: > Re-sending due to dodgy looking 'reply-to'. > > On Sun, 27 Jan 2019, Billy Laws wrote: > >> >This patch adds PMIC configurations for low-battery >> >monitoring by handling max77620 register CNFGGLBL1. >> > >> It might be an idea to add lbhyst configuration here and support using >> custom lbdac values to specify a different cutoff point. > > Do you know why this email was sent independent of the original > submission? Something wrong with your mailer? > I tried to add the reply to manually in thunderbird as I wasn't subscribed to the mailing list, seems it didn't exactly work. > -- > Lee Jones [李琼斯] > Linaro Services Technical Lead > Linaro.org │ Open source software for ARM SoCs > Follow Linaro: Facebook | Twitter | Blog >
Re: [2/2] mfd: max77620: Add low battery monitor support
Re-sending due to dodgy looking 'reply-to'. On Sun, 27 Jan 2019, Billy Laws wrote: > >This patch adds PMIC configurations for low-battery > >monitoring by handling max77620 register CNFGGLBL1. > > > It might be an idea to add lbhyst configuration here and support using > custom lbdac values to specify a different cutoff point. Do you know why this email was sent independent of the original submission? Something wrong with your mailer? -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
Re: [2/2] mfd: max77620: Add low battery monitor support
On Sun, 27 Jan 2019, Billy Laws wrote: > >This patch adds PMIC configurations for low-battery > >monitoring by handling max77620 register CNFGGLBL1. > > > It might be an idea to add lbhyst configuration here and support using > custom lbdac values to specify a different cutoff point. Do you know why this email was sent independent of the original submission? Something wrong with your mailer? -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
Re: [2/2] mfd: max77620: Add low battery monitor support
>This patch adds PMIC configurations for low-battery >monitoring by handling max77620 register CNFGGLBL1. > It might be an idea to add lbhyst configuration here and support using custom lbdac values to specify a different cutoff point. See: https://datasheetspdf.com/pdf-file/924230/Maxim/MAX8698C/1 pg 46 >Signed-off-by: Laxman Dewangan >Signed-off-by: Venkat Reddy Talla >Signed-off-by: Mark Zhang >--- > drivers/mfd/max77620.c | 57 +- > 1 file changed, 56 insertions(+), 1 deletion(-) > >diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c >index f58143103185..9e50d145afd8 100644 >--- a/drivers/mfd/max77620.c >+++ b/drivers/mfd/max77620.c >@@ -474,6 +474,57 @@ static int max77620_init_backup_battery_charging(struct max77620_chip *chip) > return ret; > } > >+static int max77620_init_low_battery_monitor(struct max77620_chip *chip) >+{ >+ struct device *dev = chip->dev; >+ struct device_node *np; >+ bool pval; >+ u8 mask = 0; >+ u8 val = 0; >+ int ret; >+ >+ np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); >+ if (!np) { >+ dev_info(dev, "Low battery monitoring support disabled\n"); >+ return 0; >+ } >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); >+ if (pval) { >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ val |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ } >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); >+ if (pval) >+ mask |= MAX77620_CNFGGLBL1_LBDAC_EN; >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); >+ if (pval) { >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >+ val |= MAX77620_CNFGGLBL1_MPPLD; >+ } >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); >+ if (pval) >+ mask |= MAX77620_CNFGGLBL1_MPPLD; >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); >+ if (pval) { >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >+ val |= MAX77620_CNFGGLBL1_LBRSTEN; >+ } >+ >+ pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); >+ if (pval) >+ mask |= MAX77620_CNFGGLBL1_LBRSTEN; >+ >+ ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); >+ if (ret < 0) >+ dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); >+ return ret; >+} >+ > static int max77620_read_es_version(struct max77620_chip *chip) > { > unsigned int val; >@@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client *client, > if (ret < 0) > return ret; > >- ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, >+ ret = max77620_init_low_battery_monitor(chip); >+ if (ret < 0) >+ return ret; >+ >+ ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, > mfd_cells, n_mfd_cells, NULL, 0, > regmap_irq_get_domain(chip->top_irq_data)); > if (ret < 0) {
[PATCH 2/2] mfd: max77620: Add low battery monitor support
This patch adds PMIC configurations for low-battery monitoring by handling max77620 register CNFGGLBL1. Signed-off-by: Laxman Dewangan Signed-off-by: Venkat Reddy Talla Signed-off-by: Mark Zhang --- drivers/mfd/max77620.c | 57 +- 1 file changed, 56 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c index f58143103185..9e50d145afd8 100644 --- a/drivers/mfd/max77620.c +++ b/drivers/mfd/max77620.c @@ -474,6 +474,57 @@ static int max77620_init_backup_battery_charging(struct max77620_chip *chip) return ret; } +static int max77620_init_low_battery_monitor(struct max77620_chip *chip) +{ + struct device *dev = chip->dev; + struct device_node *np; + bool pval; + u8 mask = 0; + u8 val = 0; + int ret; + + np = of_get_child_by_name(dev->of_node, "low-battery-monitor"); + if (!np) { + dev_info(dev, "Low battery monitoring support disabled\n"); + return 0; + } + + pval = of_property_read_bool(np, "maxim,low-battery-dac-enable"); + if (pval) { + mask |= MAX77620_CNFGGLBL1_LBDAC_EN; + val |= MAX77620_CNFGGLBL1_LBDAC_EN; + } + + pval = of_property_read_bool(np, "maxim,low-battery-dac-disable"); + if (pval) + mask |= MAX77620_CNFGGLBL1_LBDAC_EN; + + pval = of_property_read_bool(np, "maxim,low-battery-shutdown-enable"); + if (pval) { + mask |= MAX77620_CNFGGLBL1_MPPLD; + val |= MAX77620_CNFGGLBL1_MPPLD; + } + + pval = of_property_read_bool(np, "maxim,low-battery-shutdown-disable"); + if (pval) + mask |= MAX77620_CNFGGLBL1_MPPLD; + + pval = of_property_read_bool(np, "maxim,low-battery-reset-enable"); + if (pval) { + mask |= MAX77620_CNFGGLBL1_LBRSTEN; + val |= MAX77620_CNFGGLBL1_LBRSTEN; + } + + pval = of_property_read_bool(np, "maxim,low-battery-reset-disable"); + if (pval) + mask |= MAX77620_CNFGGLBL1_LBRSTEN; + + ret = regmap_update_bits(chip->rmap, MAX77620_REG_CNFGGLBL1, mask, val); + if (ret < 0) + dev_err(dev, "Reg CNFGGLBL1 update failed: %d\n", ret); + return ret; +} + static int max77620_read_es_version(struct max77620_chip *chip) { unsigned int val; @@ -563,7 +614,11 @@ static int max77620_probe(struct i2c_client *client, if (ret < 0) return ret; - ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, + ret = max77620_init_low_battery_monitor(chip); + if (ret < 0) + return ret; + + ret = devm_mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, mfd_cells, n_mfd_cells, NULL, 0, regmap_irq_get_domain(chip->top_irq_data)); if (ret < 0) { -- 2.19.2