iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

can: tcan4x5x: Specify separate read/write ranges

Browse Source 
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>
This commit is contained in:
Markus Schneider-Pargmann 2022-12-06 12:57:28 +01:00 committed by Marc Kleine-Budde
parent ef5778f708
commit 39dbb21b6a
1 changed files with 37 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/can/m_can/tcan4x5x-regmap.c
View File

@ -90,16 +90,47 @@ static int tcan4x5x_regmap_read(void *context,
return 0;
}
static const struct regmap_range tcan4x5x_reg_table_yes_range[] = {
static const struct regmap_range tcan4x5x_reg_table_wr_range[] = {
/* Device ID and SPI Registers */
regmap_reg_range(0x000c, 0x0010),
/* Device configuration registers and Interrupt Flags*/
regmap_reg_range(0x0800, 0x080c),
regmap_reg_range(0x0814, 0x0814),
regmap_reg_range(0x0820, 0x0820),
regmap_reg_range(0x0830, 0x0830),
/* M_CAN */
regmap_reg_range(0x100c, 0x102c),
regmap_reg_range(0x1048, 0x1048),
regmap_reg_range(0x1050, 0x105c),
regmap_reg_range(0x1080, 0x1088),
regmap_reg_range(0x1090, 0x1090),
regmap_reg_range(0x1098, 0x10a0),
regmap_reg_range(0x10a8, 0x10b0),
regmap_reg_range(0x10b8, 0x10c0),
regmap_reg_range(0x10c8, 0x10c8),
regmap_reg_range(0x10d0, 0x10d4),
regmap_reg_range(0x10e0, 0x10e4),
regmap_reg_range(0x10f0, 0x10f0),
regmap_reg_range(0x10f8, 0x10f8),
/* MRAM */
regmap_reg_range(0x8000, 0x87fc),
};
static const struct regmap_range tcan4x5x_reg_table_rd_range[] = {
regmap_reg_range(0x0000, 0x0010), /* Device ID and SPI Registers */
regmap_reg_range(0x0800, 0x0830), /* Device configuration registers and Interrupt Flags*/
regmap_reg_range(0x1000, 0x10fc), /* M_CAN */
regmap_reg_range(0x8000, 0x87fc), /* MRAM */
};
static const struct regmap_access_table tcan4x5x_reg_table = {
.yes_ranges = tcan4x5x_reg_table_yes_range,
.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_yes_range),
static const struct regmap_access_table tcan4x5x_reg_table_wr = {
.yes_ranges = tcan4x5x_reg_table_wr_range,
.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_wr_range),
};
static const struct regmap_access_table tcan4x5x_reg_table_rd = {
.yes_ranges = tcan4x5x_reg_table_rd_range,
.n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_rd_range),
};
static const struct regmap_config tcan4x5x_regmap = {
@ -107,8 +138,8 @@ static const struct regmap_config tcan4x5x_regmap = {
.reg_stride = 4,
.pad_bits = 8,
.val_bits = 32,
.wr_table = &tcan4x5x_reg_table,
.rd_table = &tcan4x5x_reg_table,
.wr_table = &tcan4x5x_reg_table_wr,
.rd_table = &tcan4x5x_reg_table_rd,
.max_register = TCAN4X5X_MAX_REGISTER,
.cache_type = REGCACHE_NONE,
.read_flag_mask = (__force unsigned long)