netdev - [net-next 14/19] can: tcan4x5x: add {wr,rd}

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Message-Id: <20210107094900.173046-15-mkl@pengutronix.de>
Date:   Thu,  7 Jan 2021 10:48:55 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Marc Kleine-Budde <mkl@...gutronix.de>,
        Dan Murphy <dmurphy@...com>, Sean Nyekjaer <sean@...nix.com>
Subject: [net-next 14/19] can: tcan4x5x: add {wr,rd}_table

The memory space of the chip is not fully populated, so add a regmap range
table to document this.

Reviewed-by: Dan Murphy <dmurphy@...com>
Tested-by: Sean Nyekjaer <sean@...nix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-15-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/m_can/tcan4x5x-regmap.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/can/m_can/tcan4x5x-regmap.c b/drivers/net/can/m_can/tcan4x5x-regmap.c
index f113881fb012..5ea162578619 100644
--- a/drivers/net/can/m_can/tcan4x5x-regmap.c
+++ b/drivers/net/can/m_can/tcan4x5x-regmap.c
@@ -53,10 +53,24 @@ static int tcan4x5x_regmap_read(void *context,
 	return spi_write_then_read(spi, &addr, reg_size, (u32 *)val, val_size);
 }
 
+static const struct regmap_range tcan4x5x_reg_table_yes_range[] = {
+	regmap_reg_range(0x0000, 0x002c),	/* Device ID and SPI Registers */
+	regmap_reg_range(0x0800, 0x083c),	/* 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_config tcan4x5x_regmap = {
 	.reg_bits = 32,
 	.reg_stride = 4,
 	.val_bits = 32,
+	.wr_table = &tcan4x5x_reg_table,
+	.rd_table = &tcan4x5x_reg_table,
 	.cache_type = REGCACHE_NONE,
 	.max_register = TCAN4X5X_MAX_REGISTER,
 };
-- 
2.29.2