Re: [PATCH v21 2/2] drm/bridge: Add I2C based driver for ps8640 bridge

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On Wed, 2019-12-18 at 16:21 +0100, Enric Balletbo i Serra wrote:
> Hi Ezequiel,
> 
> Many thanks for the review, I am just preparing the next version to send.
> 
[..]
> > > +
> > > +#define PAGE1_VSTART		0x6b
> > > +#define PAGE2_SPI_CFG3		0x82
> > > +#define I2C_TO_SPI_RESET	0x20
> > > +#define PAGE2_ROMADD_BYTE1	0x8e
> > > +#define PAGE2_ROMADD_BYTE2	0x8f
> > > +#define PAGE2_SWSPI_WDATA	0x90
> > > +#define PAGE2_SWSPI_RDATA	0x91
> > > +#define PAGE2_SWSPI_LEN		0x92
> > > +#define PAGE2_SWSPI_CTL		0x93
> > > +#define TRIGGER_NO_READBACK	0x05
> > > +#define TRIGGER_READBACK	0x01
> > > +#define PAGE2_SPI_STATUS	0x9e
> > > +#define SPI_READY		0x0c
> > > +#define PAGE2_GPIO_L		0xa6
> > > +#define PAGE2_GPIO_H		0xa7
> > > +#define PS_GPIO9		BIT(1)
> > > +#define PAGE2_IROM_CTRL		0xb0
> > > +#define IROM_ENABLE		0xc0
> > > +#define IROM_DISABLE		0x80
> > > +#define PAGE2_SW_RESET		0xbc
> > > +#define SPI_SW_RESET		BIT(7)
> > > +#define MPU_SW_RESET		BIT(6)
> > > +#define PAGE2_ENCTLSPI_WR	0xda
> > > +#define PAGE2_I2C_BYPASS	0xea
> > > +#define I2C_BYPASS_EN		0xd0
> > > +#define PAGE2_MCS_EN		0xf3
> > > +#define MCS_EN			BIT(0)
> > > +#define PAGE3_SET_ADD		0xfe
> > > +#define PAGE3_SET_VAL		0xff
> > > +#define VDO_CTL_ADD		0x13
> > > +#define VDO_DIS			0x18
> > > +#define VDO_EN			0x1c
> > > +#define PAGE4_REV_L		0xf0
> > > +#define PAGE4_REV_H		0xf1
> > > +#define PAGE4_CHIP_L		0xf2
> > > +#define PAGE4_CHIP_H		0xf3
> > > +
> > > +#define PAGE0_DP_CNTL		0
> > 
> > Unused macro.
> > 
> > > +#define PAGE1_VDO_BDG		1
> > > +#define PAGE2_TOP_CNTL		2
> > > +#define PAGE3_DSI_CNTL1		3
> > > +#define PAGE4_MIPI_PHY		4
> > 
> > Ditto... maybe others as well?
> > 
> 
> I removed all the unused macros.
> 

In this case, given these PAGEX_XXX refer
to the I2C ancillaries, maybe you can leave them.

Moreover, I'd put them in an enum, to emphasize
their relationship.

Regards,
Ezequiel

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