Check that there is only a single entry for each pin with pull-up and/or
pull-down capabilities.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/dbda76f342258f8029f0420fbe3f341a9abd6f01.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with I/O voltage
capabilities.  If a pin has I/O voltage register bits declarations
through .pin_to_pocctrl(), the SH_PFC_PIN_CFG_IO_VOLTAGE flag should be
set in the pin's configs, and vice versa.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/de81cced01ae3f26d341177d66d4b8e918fbfb76.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with drive
strength capabilities.  If a pin has drive strength register bits
declarations in drive_regs[], the SH_PFC_PIN_CFG_DRIVE_STRENGTH flag
should be set in the pin's configs, and vice versa.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0d5de01b5fe2c5fd23c3bea41077dc57ad105b9e.1640270559.git.geert+renesas@glider.be

Validate consistency of the pin control tables for pins with pull-up
and/or pull-down capabilities.  If a pin has bias register bits
declarations in bias_regs[] or through .pin_to_portcr(), the
corresponding SH_PFC_PIN_CFG_PULL* flags should be set in the pin's
configs, and vice versa, and the .get_bias() and .set_bias() callbacks
should be implemented.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/19b3e0773fbb36c015a43db683f79e75b0fec3ee.1640270559.git.geert+renesas@glider.be

Add checks for discovering pin groups that could share pin data, as
sharing reduces kernel size.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e16fdf729156e13b591d2f082f2cc934da580074.1640270559.git.geert+renesas@glider.be

Simplify the helper that checks if two strings are valid and identical.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/509c70041bcf4302e284758abe1fd8165644b505.1640270559.git.geert+renesas@glider.be

Currently rcar_pin_to_bias_reg() takes a struct sh_pfc pointer, which is
only available after the pin control driver has been initialized,
thus preventing the checker from calling this function for validating
consistency of the pin control tables.

Fix this by replacing the parameter by a struct sh_pfc_soc_info pointer.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/3065a12dde606bacec9e5f14f10cabeaae75e265.1640270559.git.geert+renesas@glider.be

All implementations of the .pin_to_portcr() method implement the same
conversion from Port Control Register offset to virtual address.  Factor
it out into the two callers.
Remove the pfc parameter, as it is no longer used.

Note that the failure handling in r8a7740_pin_to_portcr() is pro forma,
as the function is never called with an invalid pin number.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a485d4986a17259256988eb14e3a4c2b8d61c303.1640270559.git.geert+renesas@glider.be

The pfc parameter of the .pin_to_pocctrl() method was never used.
It is a relic of the old I/O voltage handling before commit
8775306d ("pinctrl: sh-pfc: refactor voltage setting").

Remove the parameter, as it prevents the checker from calling this
function for validating consistency of the pin control tables.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/822133086f32618c7fc920123c6a96f5d4ea7ad6.1640270559.git.geert+renesas@glider.be

Pin group vin4_g8 is a subset of vin4_data24_a.
Pin group vin5_high8 is a subset of vin5_data16_a.

This reduces kernel size by 128 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/cfb71c90c19723ba2770f7512f138e4b17857141.1640269757.git.geert+renesas@glider.be

Pin group vin4_g8 is a subset of vin4_data24_a.
Pin group vin5_high8 is a subset of vin5_data16.

This reduces kernel size by 128 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/fd8779f5c7a397e8e4dc3604fe2af55e250a9f40.1640269757.git.geert+renesas@glider.be

Pin group vin4_g8 is a subset of vin4_data24_a.
Pin group vin5_high8 is a subset of vin5_data16.

This reduces kernel size by 128 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1fc04bb08e2c26109509bd53b19ffbf9ce83d2f1.1640269757.git.geert+renesas@glider.be

Pin group vin4_g8 is a subset of vin4_data24_a.
Pin group vin5_high8 is a subset of vin5_data16.

This reduces kernel size by 128 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/100605798d02cbd8695aedfaaaa8a3b63e3a281f.1640269757.git.geert+renesas@glider.be

Pin group vin2_g8 is a subset of vin2_data24.

This reduces kernel size by 64 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a4f6a70344654456abea1f15539219d1e02a74fe.1640269757.git.geert+renesas@glider.be

Pin group usb0_ovc_vbus is a subset of usb0.
Pin group usb1_pwen is a subset of usb1.

This reduces kernel size by 16 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/b9f37cf00064293b4b6f9068bda8c1ab819090f5.1640269757.git.geert+renesas@glider.be

Pin groups sdi0_data[14] are subsets of sdi0_data8.
Pin groups sdi[12]_data1 are subsets of sdi[12]_data4.

This reduces kernel size by 56 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0f35f01666748217b93c2debc0098f9442061a1a.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[012]_data1 are subsets of sdhi[012]_data4.

This reduces kernel size by 24 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/96a5be0c34c66b302e16e915a7cc6272783aa73c.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[01]_data1 are subsets of sdhi[01]_data4.
Pin groups sdhi3_data[14] are subsets of sdhi3_data8.

This reduces kernel size by 56 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/2f702b6c6114458a43a77ae04089e7f9e20482e5.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[01]_data1 are subsets of sdhi[01]_data4.
Pin groups sdhi[23]_data[14] are subsets of sdhi[23]_data8.

This reduces kernel size by 96 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/b638b7ad4a874e64a35057fa1ce6ab23db3406cf.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[01]_data1 are subsets of sdhi[01]_data4.
Pin groups sdhi[23]_data[14] are subsets of sdhi[23]_data8.

This reduces kernel size by 96 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/d40b65eaf5e18856b6df53a1b787a1432ef14dd2.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[01]_data1 are subsets of sdhi[01]_data4.
Pin groups sdhi[23]_data[14] are subsets of sdhi[23]_data8.

This reduces kernel size by 96 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/f15024a4984f4b13e1171e3c40df9c6f7b672d7b.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[01]_data1 are subsets of sdhi[01]_data4.
Pin groups sdhi[23]_data[14] are subsets of sdhi[23]_data8.

This reduces kernel size by 96 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/4a479a1126bb405dbc853f328d483f649d43c61e.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[012]_data1 are subsets of sdhi[012]_data4.

This reduces kernel size by 24 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e4d831e163010d2b62ecc20f8e4b79fd298b2172.1640269757.git.geert+renesas@glider.be

Pin group sdhi0_data1 is a subset of sdhi0_data4.

This reduces kernel size by 8 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/76a245f8b39f8e71e3311868ec15ce8c9c44bde0.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[012]_data1 are subsets of sdhi[012]_data4.

This reduces kernel size by 24 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/cb39cb8fe9152197df56f70b4b146d8fe96fb0b7.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[0-3]_data1 are subsets of sdhi[0-3]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/88a3c2b09d34f2a528ecaa1bd55b6a96e156f5b1.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[0-3]_data1 are subsets of sdhi[0-3]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/01fd254a90be16bf37be5ecd20ada0ab2b50abd2.1640269757.git.geert+renesas@glider.be

Pin group sdhi0_data1 is a subset of sdhi0_data4.
Pin groups sdhi[12]_data1_[ab] are subsets of sdhi[12]_data4_[ab].

This reduces kernel size by 40 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/997df5b8a01657ede685c0869d73e4d6b71dce26.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[02]_data1 are subsets of sdhi[02]_data4.

This reduces kernel size by 16 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9888bbd36ec207d6e5ece6c661e2fb8bc05a7dd6.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[012]_data1 are subsets of sdhi[012]_data4.

This reduces kernel size by 24 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e07ae7b52efba55cc210d52de6a771129dd8a3b0.1640269757.git.geert+renesas@glider.be

Pin groups sdhi[012]_data1 are subsets of sdhi[012]_data4.

This reduces kernel size by 24 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/fca0b9c7cc5a1b4dd8d9bf4eff35d88d37eeab21.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data[24] are subsets of rpc_data.
Pin group rpc_clk1 is a subset of rpc_clk2.

This reduces kernel size by 104 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6da6ef4184939a0793ca5fd805e9f6bc6c07a095.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data[24] are subsets of rpc_data.
Pin group rpc_clk1 is a subset of rpc_clk2.

This reduces kernel size by 104 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a71da3daa818a33c1e81bff07d643d3f30ff1b7d.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/bba05f9ac803ecd55c6c480fa139fa1a0d268d78.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/54779df96c1e0fc9ce02786cfd9f66d4cfc063f0.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/602b718b26d5a61b59bfca785f804f0c4a8e09bc.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/725d18018c5899b33a20b8f898a421547b0bb6c5.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/3f81abaecbbca5e7a43586682472d44870c695ee.1640269757.git.geert+renesas@glider.be

Pin groups qspi[01]_data2 are subsets of qspi[01]_data4.

This reduces kernel size by 32 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6d9de5b50bbad0c7b22f08d241a23c25e487c102.1640269757.git.geert+renesas@glider.be

Pin group qspi_data2 is a subset of qspi_data4.

This reduces kernel size by 16 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/114bde1f6e7405f9b299c67f1219adde16ea0212.1640269757.git.geert+renesas@glider.be