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i2c: mux: mlxcpld: Extend supported mux number 

Allow to extend mux number supported by driver.
Currently it is limited by eight, which is not enough for new coming
Mellanox modular system with line cards, which require up to 64 mux
support.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Vadim Pasternak 2021-02-08 22:16:05 +02:00 committed by Wolfram Sang
parent c52a1c5f5d
commit 699c050654
1 changed files with 2 additions and 8 deletions
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10
drivers/i2c/muxes/i2c-mux-mlxcpld.c
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@ -15,8 +15,6 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#define CPLD_MUX_MAX_NCHANS 8
/* mlxcpld_mux - mux control structure:
* @last_val - last selected register value or -1 if mux deselected
* @client - I2C device client
@ -142,7 +140,7 @@ static int mlxcpld_mux_probe(struct platform_device *pdev)
if (!i2c_check_functionality(client->adapter, func))
return -ENODEV;
muxc = i2c_mux_alloc(client->adapter, &pdev->dev, CPLD_MUX_MAX_NCHANS,
muxc = i2c_mux_alloc(client->adapter, &pdev->dev, pdata->num_adaps,
sizeof(*data), 0, mlxcpld_mux_select_chan,
mlxcpld_mux_deselect);
if (!muxc)
@ -155,11 +153,7 @@ static int mlxcpld_mux_probe(struct platform_device *pdev)
data->last_val = -1; /* force the first selection */
/* Create an adapter for each channel. */
for (num = 0; num < CPLD_MUX_MAX_NCHANS; num++) {
if (num >= pdata->num_adaps)
/* discard unconfigured channels */
break;
for (num = 0; num < pdata->num_adaps; num++) {
err = i2c_mux_add_adapter(muxc, 0, pdata->chan_ids[num], 0);
if (err)
goto virt_reg_failed;