| Message ID | 20240701-b4-v6-10-topic-usbc-tcpci-v1-0-3fd5f4a193cc@pengutronix.de |
|---|---|
| Headers | show |
| Series | AT24 EEPROM MTD Support | expand |
On 7/1/24 4:53 PM, Marco Felsch wrote: > Provide a simple helper to make it easy to detect an master mtd device. > > Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> > --- > include/linux/mtd/mtd.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h > index 8d10d9d2e830..bf3fc2ea7230 100644 > --- a/include/linux/mtd/mtd.h > +++ b/include/linux/mtd/mtd.h > @@ -408,6 +408,11 @@ static inline struct mtd_info *mtd_get_master(struct mtd_info *mtd) > return mtd; > } > > +static inline bool mtd_is_master(struct mtd_info *mtd) > +{ > + return mtd->parent ? false : true; Perhaps: return !mtd->parent; [...] MBR, Sergey
On 24-07-01, Sergei Shtylyov wrote: > On 7/1/24 4:53 PM, Marco Felsch wrote: > > > Provide a simple helper to make it easy to detect an master mtd device. > > > > Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> > > --- > > include/linux/mtd/mtd.h | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h > > index 8d10d9d2e830..bf3fc2ea7230 100644 > > --- a/include/linux/mtd/mtd.h > > +++ b/include/linux/mtd/mtd.h > > @@ -408,6 +408,11 @@ static inline struct mtd_info *mtd_get_master(struct mtd_info *mtd) > > return mtd; > > } > > > > +static inline bool mtd_is_master(struct mtd_info *mtd) > > +{ > > + return mtd->parent ? false : true; > > Perhaps: > > return !mtd->parent; Sure, if you prefer this style rather I will change it. Regards, Marco
This series adds the intial support to handle EEPROMs via the MTD layer as well. This allow the user-space to have separate paritions since EEPROMs can become quite large nowadays. With this patchset applied EEPROMs can be accessed via: - legacy 'eeprom' device - nvmem device - mtd device(s) The patchset targets only the AT24 (I2C) EEPROMs since I have no access to AT25 (SPI) EEPROMs nor to one of the other misc/eeprom/* devices. Note: I'm not familiar with Kconfig symbol migration so I don't know if the last patch is required at the moment. Please be notified that the list of recipients is quite large due to the defconfig changes. Regards, Marco Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> --- Marco Felsch (9): mtd: core: add nvmem_write support mtd: add mtd_is_master helper mtd: add support to handle EEPROM devices mtd: devices: add AT24 eeprom support ARM: defconfig: convert to MTD_EEPROM_AT24 powerpc: convert to MTD_EEPROM_AT24 MIPS: configs: convert to MTD_EEPROM_AT24 LoongArch: convert to MTD_EEPROM_AT24 eeprom: at24: remove deprecated Kconfig symbol MAINTAINERS | 2 +- arch/arm/configs/aspeed_g4_defconfig | 2 +- arch/arm/configs/aspeed_g5_defconfig | 2 +- arch/arm/configs/at91_dt_defconfig | 2 +- arch/arm/configs/axm55xx_defconfig | 2 +- arch/arm/configs/davinci_all_defconfig | 2 +- arch/arm/configs/imx_v4_v5_defconfig | 2 +- arch/arm/configs/imx_v6_v7_defconfig | 2 +- arch/arm/configs/ixp4xx_defconfig | 2 +- arch/arm/configs/keystone_defconfig | 2 +- arch/arm/configs/lpc18xx_defconfig | 2 +- arch/arm/configs/lpc32xx_defconfig | 2 +- arch/arm/configs/multi_v5_defconfig | 2 +- arch/arm/configs/multi_v7_defconfig | 2 +- arch/arm/configs/mvebu_v5_defconfig | 2 +- arch/arm/configs/mvebu_v7_defconfig | 2 +- arch/arm/configs/mxs_defconfig | 2 +- arch/arm/configs/omap2plus_defconfig | 2 +- arch/arm/configs/pxa_defconfig | 2 +- arch/arm/configs/s3c6400_defconfig | 2 +- arch/arm/configs/sama5_defconfig | 2 +- arch/arm/configs/sama7_defconfig | 2 +- arch/arm/configs/shmobile_defconfig | 2 +- arch/arm/configs/socfpga_defconfig | 2 +- arch/arm/configs/tegra_defconfig | 2 +- arch/arm/configs/wpcm450_defconfig | 2 +- arch/loongarch/configs/loongson3_defconfig | 2 +- arch/mips/configs/cavium_octeon_defconfig | 2 +- arch/mips/configs/db1xxx_defconfig | 2 +- arch/powerpc/configs/44x/warp_defconfig | 2 +- arch/powerpc/configs/mpc512x_defconfig | 2 +- arch/powerpc/configs/mpc5200_defconfig | 2 +- arch/powerpc/configs/ppc6xx_defconfig | 2 +- arch/powerpc/configs/skiroot_defconfig | 2 +- drivers/misc/eeprom/Kconfig | 31 ------- drivers/misc/eeprom/Makefile | 1 - drivers/mtd/devices/Kconfig | 31 +++++++ drivers/mtd/devices/Makefile | 1 + drivers/{misc/eeprom => mtd/devices}/at24.c | 122 +++++++++++++++------------- drivers/mtd/mtdcore.c | 49 ++++++++++- include/linux/mtd/mtd.h | 5 ++ include/uapi/mtd/mtd-abi.h | 2 + 42 files changed, 187 insertions(+), 123 deletions(-) --- base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 change-id: 20240701-b4-v6-10-topic-usbc-tcpci-c4bc9bcce604 Best regards,