Re: [U-Boot] [PATCH v2 2/3] pmic:pfuze implement regulator mode set
Hi, Przemyslaw On 1/15/2015 10:58 PM, Przemyslaw Marczak wrote: Hello Peng, On 01/15/2015 11:18 AM, Peng Fan wrote: This patch is to implement pfuze_mode_init and pfuze_regulator_mode_set function, and add prototype in header file. pfuze_mode_init is to set switching mode for all buck regulators to improve system efficiency. pfuze_regulator_mode_set is to set the regulator's mode according input parameter. Mode: OFF: The regulator is switched off and the output voltage is discharged. PFM: In this mode, the regulator is always in PFM mode, which is useful at light loads for optimized efficiency. PWM: In this mode, the regulator is always in PWM mode operation regardless of load conditions. APS: In this mode, the regulator moves automatically between pulse skipping mode and PWM mode depending on load conditions. Signed-off-by: Peng Fan --- Changes v2: implement one function mode for one regulator. board/freescale/common/pfuze.c | 43 ++ board/freescale/common/pfuze.h | 2 ++ 2 files changed, 45 insertions(+) diff --git a/board/freescale/common/pfuze.c b/board/freescale/common/pfuze.c index 2cd1794..f2fffc1 100644 --- a/board/freescale/common/pfuze.c +++ b/board/freescale/common/pfuze.c @@ -8,6 +8,49 @@ #include #include +/* Set one switch regulator's mode */ This is not exactly what I mean. Actually by doing this, we have pmic_reg_write() function with just the other name. +int pfuze_regulator_mode_set(struct pmic *p, u32 regulator, u32 mode) +{ +return pmic_reg_write(p, regulator, mode); +} The 'u32 regulator' suggests to pass the regulator number rather than defined mode register address - little unclear. And the "pfuze.." function name is general and should be implemented by pfuze driver, which could be 'temporary' implemented in: drivers/power/pmic/pmic_pfuze100.c And this driver should take care of the PFUZE id and write the given mode to proper pmic register address. I mean 'temporary' because, soon we will move to the next pmic framework, finally I hope to send it at the end of the next week. + +/* Set all switch regulators' working mode */ So I think, that the below function without the loop could be implemented in the pfuze driver file. +int pfuze_mode_init(struct pmic *p, u32 mode) Starting with some like this: int pfuze_sw_regulator_mode_set(struct pmic *p, u32 ??switch_num??, u32 mode) +{ +unsigned char offset, i, switch_num; +u32 id, ret; + +pmic_reg_read(p, PFUZE100_DEVICEID, &id); +id = id & 0xf; + +if (id == 0) { +switch_num = 6; +offset = PFUZE100_SW1CMODE; +} else if (id == 1) { +switch_num = 4; +offset = PFUZE100_SW2MODE; +} else { +printf("Not supported, id=%d\n", id); +return -1; +} + Ending with something like this: ret = pmic_reg_write(p, offset + switch_num * 7, mode); if (ret ... ... } And this code below can stay in the 'common.c' code, with small changes: ret = pfuze_sw_regulator_mode_set(p, 1, mode); +ret = pfuze_regulator_mode_set(p, PFUZE100_SW1ABMODE, mode); +if (ret < 0) { +printf("Set SW1AB mode error!\n"); +return ret; +} + +for (i = 0; i < switch_num - 1; i++) { ret = pfuze_sw_regulator_mode_set(p, i, mode); +ret = pfuze_regulator_mode_set(p, offset + i * 7, mode); +if (ret < 0) { +printf("Set switch%x mode error!\n", offset + i * 7); +return ret; +} +} + +return ret; +} + struct pmic *pfuze_common_init(unsigned char i2cbus) { struct pmic *p; diff --git a/board/freescale/common/pfuze.h b/board/freescale/common/pfuze.h index 7a4126c..7c316c6 100644 --- a/board/freescale/common/pfuze.h +++ b/board/freescale/common/pfuze.h @@ -8,5 +8,7 @@ #define __PFUZE_BOARD_HELPER__ struct pmic *pfuze_common_init(unsigned char i2cbus); +int pfuze_mode_init(struct pmic *p, u32 mode); +int pfuze_regulator_mode_set(struct pmic *p, u32 regulator, u32 mode); And this: int pfuze_sw_regulator_mode_set(...); should go here: include/power/pfuze100_pmic.h #endif I suggested the 'sw' in the function name for the switching regulator type, so then we can pass just switching regulator number as an argument: e.g. 1,2,3... And maybe in the future you will need ldo or some else regulator type, so adding 'pfuze_ldo_regulator_mode_set' function, will keep the code consistence. I would like to keep the driver specific code in driver file and common code in the common file. Thanks for your review. Get it. I think this first version is fine for me now, this new feature can be done in future patch. I think it is reasonable. If you now prefer to keep the first version of this patch set, then you have still my ACK for it:). Best regards, Regards, Peng. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/li
Re: [U-Boot] [PATCH v2 2/3] pmic:pfuze implement regulator mode set
Hello Peng, On 01/15/2015 11:18 AM, Peng Fan wrote: This patch is to implement pfuze_mode_init and pfuze_regulator_mode_set function, and add prototype in header file. pfuze_mode_init is to set switching mode for all buck regulators to improve system efficiency. pfuze_regulator_mode_set is to set the regulator's mode according input parameter. Mode: OFF: The regulator is switched off and the output voltage is discharged. PFM: In this mode, the regulator is always in PFM mode, which is useful at light loads for optimized efficiency. PWM: In this mode, the regulator is always in PWM mode operation regardless of load conditions. APS: In this mode, the regulator moves automatically between pulse skipping mode and PWM mode depending on load conditions. Signed-off-by: Peng Fan --- Changes v2: implement one function mode for one regulator. board/freescale/common/pfuze.c | 43 ++ board/freescale/common/pfuze.h | 2 ++ 2 files changed, 45 insertions(+) diff --git a/board/freescale/common/pfuze.c b/board/freescale/common/pfuze.c index 2cd1794..f2fffc1 100644 --- a/board/freescale/common/pfuze.c +++ b/board/freescale/common/pfuze.c @@ -8,6 +8,49 @@ #include #include +/* Set one switch regulator's mode */ This is not exactly what I mean. Actually by doing this, we have pmic_reg_write() function with just the other name. +int pfuze_regulator_mode_set(struct pmic *p, u32 regulator, u32 mode) +{ + return pmic_reg_write(p, regulator, mode); +} The 'u32 regulator' suggests to pass the regulator number rather than defined mode register address - little unclear. And the "pfuze.." function name is general and should be implemented by pfuze driver, which could be 'temporary' implemented in: drivers/power/pmic/pmic_pfuze100.c And this driver should take care of the PFUZE id and write the given mode to proper pmic register address. I mean 'temporary' because, soon we will move to the next pmic framework, finally I hope to send it at the end of the next week. + +/* Set all switch regulators' working mode */ So I think, that the below function without the loop could be implemented in the pfuze driver file. +int pfuze_mode_init(struct pmic *p, u32 mode) Starting with some like this: int pfuze_sw_regulator_mode_set(struct pmic *p, u32 ??switch_num??, u32 mode) +{ + unsigned char offset, i, switch_num; + u32 id, ret; + + pmic_reg_read(p, PFUZE100_DEVICEID, &id); + id = id & 0xf; + + if (id == 0) { + switch_num = 6; + offset = PFUZE100_SW1CMODE; + } else if (id == 1) { + switch_num = 4; + offset = PFUZE100_SW2MODE; + } else { + printf("Not supported, id=%d\n", id); + return -1; + } + Ending with something like this: ret = pmic_reg_write(p, offset + switch_num * 7, mode); if (ret ... ... } And this code below can stay in the 'common.c' code, with small changes: ret = pfuze_sw_regulator_mode_set(p, 1, mode); + ret = pfuze_regulator_mode_set(p, PFUZE100_SW1ABMODE, mode); + if (ret < 0) { + printf("Set SW1AB mode error!\n"); + return ret; + } + + for (i = 0; i < switch_num - 1; i++) { ret = pfuze_sw_regulator_mode_set(p, i, mode); + ret = pfuze_regulator_mode_set(p, offset + i * 7, mode); + if (ret < 0) { + printf("Set switch%x mode error!\n", offset + i * 7); + return ret; + } + } + + return ret; +} + struct pmic *pfuze_common_init(unsigned char i2cbus) { struct pmic *p; diff --git a/board/freescale/common/pfuze.h b/board/freescale/common/pfuze.h index 7a4126c..7c316c6 100644 --- a/board/freescale/common/pfuze.h +++ b/board/freescale/common/pfuze.h @@ -8,5 +8,7 @@ #define __PFUZE_BOARD_HELPER__ struct pmic *pfuze_common_init(unsigned char i2cbus); +int pfuze_mode_init(struct pmic *p, u32 mode); +int pfuze_regulator_mode_set(struct pmic *p, u32 regulator, u32 mode); And this: int pfuze_sw_regulator_mode_set(...); should go here: include/power/pfuze100_pmic.h #endif I suggested the 'sw' in the function name for the switching regulator type, so then we can pass just switching regulator number as an argument: e.g. 1,2,3... And maybe in the future you will need ldo or some else regulator type, so adding 'pfuze_ldo_regulator_mode_set' function, will keep the code consistence. I would like to keep the driver specific code in driver file and common code in the common file. I think it is reasonable. If you now prefer to keep the first version of this patch set, then you have still my ACK for it:). Best regards, -- Przemyslaw Marczak Samsung R&D Institute Poland Samsung Electronics p.marc...@samsung.com ___ U-Boot mailing list U-Boot@lists.denx.de http://l