can: tcan4x5x: Specify separate read/write ranges
Specify exactly which registers are read/writeable in the chip. This is supposed to help detect any violations in the future. Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com> Link: https://lore.kernel.org/all/20221206115728.1056014-12-msp@baylibre.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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@ -90,16 +90,47 @@ static int tcan4x5x_regmap_read(void *context,
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return 0;
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}
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static const struct regmap_range tcan4x5x_reg_table_yes_range[] = {
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static const struct regmap_range tcan4x5x_reg_table_wr_range[] = {
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/* Device ID and SPI Registers */
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regmap_reg_range(0x000c, 0x0010),
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/* Device configuration registers and Interrupt Flags*/
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regmap_reg_range(0x0800, 0x080c),
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regmap_reg_range(0x0814, 0x0814),
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regmap_reg_range(0x0820, 0x0820),
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regmap_reg_range(0x0830, 0x0830),
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/* M_CAN */
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regmap_reg_range(0x100c, 0x102c),
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regmap_reg_range(0x1048, 0x1048),
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regmap_reg_range(0x1050, 0x105c),
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regmap_reg_range(0x1080, 0x1088),
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regmap_reg_range(0x1090, 0x1090),
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regmap_reg_range(0x1098, 0x10a0),
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regmap_reg_range(0x10a8, 0x10b0),
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regmap_reg_range(0x10b8, 0x10c0),
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regmap_reg_range(0x10c8, 0x10c8),
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regmap_reg_range(0x10d0, 0x10d4),
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regmap_reg_range(0x10e0, 0x10e4),
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regmap_reg_range(0x10f0, 0x10f0),
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regmap_reg_range(0x10f8, 0x10f8),
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/* MRAM */
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regmap_reg_range(0x8000, 0x87fc),
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};
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static const struct regmap_range tcan4x5x_reg_table_rd_range[] = {
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regmap_reg_range(0x0000, 0x0010), /* Device ID and SPI Registers */
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regmap_reg_range(0x0800, 0x0830), /* Device configuration registers and Interrupt Flags*/
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regmap_reg_range(0x1000, 0x10fc), /* M_CAN */
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regmap_reg_range(0x8000, 0x87fc), /* MRAM */
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};
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static const struct regmap_access_table tcan4x5x_reg_table = {
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.yes_ranges = tcan4x5x_reg_table_yes_range,
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.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_yes_range),
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static const struct regmap_access_table tcan4x5x_reg_table_wr = {
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.yes_ranges = tcan4x5x_reg_table_wr_range,
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.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_wr_range),
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};
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static const struct regmap_access_table tcan4x5x_reg_table_rd = {
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.yes_ranges = tcan4x5x_reg_table_rd_range,
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.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_rd_range),
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};
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static const struct regmap_config tcan4x5x_regmap = {
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@ -107,8 +138,8 @@ static const struct regmap_config tcan4x5x_regmap = {
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.reg_stride = 4,
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.pad_bits = 8,
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.val_bits = 32,
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.wr_table = &tcan4x5x_reg_table,
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.rd_table = &tcan4x5x_reg_table,
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.wr_table = &tcan4x5x_reg_table_wr,
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.rd_table = &tcan4x5x_reg_table_rd,
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.max_register = TCAN4X5X_MAX_REGISTER,
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.cache_type = REGCACHE_NONE,
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.read_flag_mask = (__force unsigned long)
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