linux-kernel - Re: [PATCH v1 1/1] i2c: qcom-geni: Use generic definitions for bus frequencies

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Message-ID: <dc7ae8d3-f5c0-4d5b-8a21-1439f518fe4a@quicinc.com>
Date: Wed, 26 Mar 2025 10:25:59 +0530
From: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
To: Christopher Obbard <christopher.obbard@...aro.org>,
        Andy Shevchenko
	<andriy.shevchenko@...ux.intel.com>
CC: Andi Shyti <andi.shyti@...nel.org>, <linux-i2c@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Viken
 Dadhaniya" <quic_vdadhani@...cinc.com>
Subject: Re: [PATCH v1 1/1] i2c: qcom-geni: Use generic definitions for bus
 frequencies

Thanks Andy for the change !

On 3/22/2025 9:48 PM, Christopher Obbard wrote:
> Hi Andy,
> 
> On Sat, 22 Mar 2025 at 14:59, Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
>>
>> Since we have generic definitions for bus frequencies, let's use them.
>>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
> Looks good to me.
> 
> Reviewed-by: Christopher Obbard <christopher.obbard@...aro.org>
Reviewed-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
> 
>> ---
>>   drivers/i2c/busses/i2c-qcom-geni.c | 19 +++++++++----------
>>   1 file changed, 9 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
>> index 515a784c951c..ccea575fb783 100644
>> --- a/drivers/i2c/busses/i2c-qcom-geni.c
>> +++ b/drivers/i2c/busses/i2c-qcom-geni.c
>> @@ -71,7 +71,6 @@ enum geni_i2c_err_code {
>>                                                                          << 5)
>>
>>   #define I2C_AUTO_SUSPEND_DELAY 250
>> -#define KHZ(freq)              (1000 * freq)
>>   #define PACKING_BYTES_PW       4
>>
>>   #define ABORT_TIMEOUT          HZ
>> @@ -148,18 +147,18 @@ struct geni_i2c_clk_fld {
>>    * source_clock = 19.2 MHz
>>    */
>>   static const struct geni_i2c_clk_fld geni_i2c_clk_map_19p2mhz[] = {
>> -       {KHZ(100), 7, 10, 12, 26},
>> -       {KHZ(400), 2,  5, 11, 22},
>> -       {KHZ(1000), 1, 2,  8, 18},
>> -       {},
>> +       { I2C_MAX_STANDARD_MODE_FREQ, 7, 10, 12, 26 },
>> +       { I2C_MAX_FAST_MODE_FREQ, 2,  5, 11, 22 },
>> +       { I2C_MAX_FAST_MODE_PLUS_FREQ, 1, 2,  8, 18 },
>> +       {}
>>   };
>>
>>   /* source_clock = 32 MHz */
>>   static const struct geni_i2c_clk_fld geni_i2c_clk_map_32mhz[] = {
>> -       {KHZ(100), 8, 14, 18, 40},
>> -       {KHZ(400), 4,  3, 11, 20},
>> -       {KHZ(1000), 2, 3,  6, 15},
>> -       {},
>> +       { I2C_MAX_STANDARD_MODE_FREQ, 8, 14, 18, 40 },
>> +       { I2C_MAX_FAST_MODE_FREQ, 4,  3, 11, 20 },
>> +       { I2C_MAX_FAST_MODE_PLUS_FREQ, 2, 3,  6, 15 },
>> +       {}
>>   };
>>
>>   static int geni_i2c_clk_map_idx(struct geni_i2c_dev *gi2c)
>> @@ -812,7 +811,7 @@ static int geni_i2c_probe(struct platform_device *pdev)
>>                                         &gi2c->clk_freq_out);
>>          if (ret) {
>>                  dev_info(dev, "Bus frequency not specified, default to 100kHz.\n");
>> -               gi2c->clk_freq_out = KHZ(100);
>> +               gi2c->clk_freq_out = I2C_MAX_STANDARD_MODE_FREQ;
>>          }
>>
>>          if (has_acpi_companion(dev))
>> --
>> 2.47.2
>>
>>