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pinctrl: sh-pfc: Reduce kernel size for narrow VIN channels 

Some VIN channels support less than 24 lanes.  As union vin_data always
consumes space for 24 lanes, this wastes memory.

Hence introduce new smaller unions vin_data12 and vin_data16, to
accommodate VIN channels with only 12 or 16 lanes.

This reduces the static pin controller driver size by 320 bytes for
R-Car V2H, and by 96 bytes for R-Car E2.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
This commit is contained in:
Geert Uytterhoeven 2018-10-16 09:46:12 +02:00
parent 9f8dc8e2b1
commit 50f3f2d73e
3 changed files with 25 additions and 12 deletions
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16
drivers/pinctrl/sh-pfc/pfc-r8a7792.c
View File

@ -1474,7 +1474,7 @@ static const unsigned int vin1_clk_mux[] = {
VI1_CLK_MARK,
};
/* - VIN2 ------------------------------------------------------------------- */
static const union vin_data vin2_data_pins = {
static const union vin_data16 vin2_data_pins = {
.data16 = {
RCAR_GP_PIN(6, 4), RCAR_GP_PIN(6, 5),
RCAR_GP_PIN(6, 6), RCAR_GP_PIN(6, 7),
@ -1486,7 +1486,7 @@ static const union vin_data vin2_data_pins = {
RCAR_GP_PIN(8, 11), RCAR_GP_PIN(8, 12),
},
};
static const union vin_data vin2_data_mux = {
static const union vin_data16 vin2_data_mux = {
.data16 = {
VI2_D0_C0_MARK, VI2_D1_C1_MARK,
VI2_D2_C2_MARK, VI2_D3_C3_MARK,
@ -1524,7 +1524,7 @@ static const unsigned int vin2_clk_mux[] = {
VI2_CLK_MARK,
};
/* - VIN3 ------------------------------------------------------------------- */
static const union vin_data vin3_data_pins = {
static const union vin_data16 vin3_data_pins = {
.data16 = {
RCAR_GP_PIN(7, 4), RCAR_GP_PIN(7, 5),
RCAR_GP_PIN(7, 6), RCAR_GP_PIN(7, 7),
@ -1536,7 +1536,7 @@ static const union vin_data vin3_data_pins = {
RCAR_GP_PIN(8, 15), RCAR_GP_PIN(8, 16),
},
};
static const union vin_data vin3_data_mux = {
static const union vin_data16 vin3_data_mux = {
.data16 = {
VI3_D0_C0_MARK, VI3_D1_C1_MARK,
VI3_D2_C2_MARK, VI3_D3_C3_MARK,
@ -1574,7 +1574,7 @@ static const unsigned int vin3_clk_mux[] = {
VI3_CLK_MARK,
};
/* - VIN4 ------------------------------------------------------------------- */
static const union vin_data vin4_data_pins = {
static const union vin_data12 vin4_data_pins = {
.data12 = {
RCAR_GP_PIN(8, 4), RCAR_GP_PIN(8, 5),
RCAR_GP_PIN(8, 6), RCAR_GP_PIN(8, 7),
@ -1584,7 +1584,7 @@ static const union vin_data vin4_data_pins = {
RCAR_GP_PIN(8, 14), RCAR_GP_PIN(8, 15),
},
};
static const union vin_data vin4_data_mux = {
static const union vin_data12 vin4_data_mux = {
.data12 = {
VI4_D0_C0_MARK, VI4_D1_C1_MARK,
VI4_D2_C2_MARK, VI4_D3_C3_MARK,
@ -1620,7 +1620,7 @@ static const unsigned int vin4_clk_mux[] = {
VI4_CLK_MARK,
};
/* - VIN5 ------------------------------------------------------------------- */
static const union vin_data vin5_data_pins = {
static const union vin_data12 vin5_data_pins = {
.data12 = {
RCAR_GP_PIN(9, 4), RCAR_GP_PIN(9, 5),
RCAR_GP_PIN(9, 6), RCAR_GP_PIN(9, 7),
@ -1630,7 +1630,7 @@ static const union vin_data vin5_data_pins = {
RCAR_GP_PIN(9, 14), RCAR_GP_PIN(9, 15),
},
};
static const union vin_data vin5_data_mux = {
static const union vin_data12 vin5_data_mux = {
.data12 = {
VI5_D0_C0_MARK, VI5_D1_C1_MARK,
VI5_D2_C2_MARK, VI5_D3_C3_MARK,

4
drivers/pinctrl/sh-pfc/pfc-r8a7794.c
View File

@ -3704,7 +3704,7 @@ static const unsigned int vin0_clk_mux[] = {
VI0_CLK_MARK,
};
/* - VIN1 ------------------------------------------------------------------- */
static const union vin_data vin1_data_pins = {
static const union vin_data12 vin1_data_pins = {
.data12 = {
RCAR_GP_PIN(5, 12), RCAR_GP_PIN(5, 13),
RCAR_GP_PIN(5, 14), RCAR_GP_PIN(5, 15),
@ -3714,7 +3714,7 @@ static const union vin_data vin1_data_pins = {
RCAR_GP_PIN(1, 12), RCAR_GP_PIN(1, 13),
},
};
static const union vin_data vin1_data_mux = {
static const union vin_data12 vin1_data_mux = {
.data12 = {
VI1_DATA0_MARK, VI1_DATA1_MARK,
VI1_DATA2_MARK, VI1_DATA3_MARK,

17
drivers/pinctrl/sh-pfc/sh_pfc.h
View File

@ -53,8 +53,8 @@ struct sh_pfc_pin_group {
};
/*
* Using union vin_data saves memory occupied by the VIN data pins.
* VIN_DATA_PIN_GROUP() is a macro used to describe the VIN pin groups
* Using union vin_data{,12,16} saves memory occupied by the VIN data pins.
* VIN_DATA_PIN_GROUP() is a macro used to describe the VIN pin groups
* in this case.
*/
#define VIN_DATA_PIN_GROUP(n, s) \
@ -65,6 +65,19 @@ struct sh_pfc_pin_group {
.nr_pins = ARRAY_SIZE(n##_pins.data##s), \
}
union vin_data12 {
unsigned int data12[12];
unsigned int data10[10];
unsigned int data8[8];
};
union vin_data16 {
unsigned int data16[16];
unsigned int data12[12];
unsigned int data10[10];
unsigned int data8[8];
};
union vin_data {
unsigned int data24[24];
unsigned int data20[20];