diff options
Diffstat (limited to 'drivers/clk/clk-si570.c')
| -rw-r--r-- | drivers/clk/clk-si570.c | 69 |
1 files changed, 39 insertions, 30 deletions
diff --git a/drivers/clk/clk-si570.c b/drivers/clk/clk-si570.c index de0212fb5f..a549ea13be 100644 --- a/drivers/clk/clk-si570.c +++ b/drivers/clk/clk-si570.c @@ -50,11 +50,21 @@ #define SI570_FREEZE_DCO (1 << 4) /** + * struct clk_si570_info: + * @max_freq: Maximum frequency for this device + * @has_temperature_stability: Device support temperature stability + */ +struct clk_si570_info { + u64 max_freq; + bool has_temperature_stability; +}; + +/** * struct clk_si570: * @hw: Clock hw struct * @regmap: Device's regmap * @div_offset: Rgister offset for dividers - * @max_freq: Maximum frequency for this device + * @info: Device info * @fxtal: Factory xtal frequency * @n1: Clock divider N1 * @hs_div: Clock divider HSDIV @@ -66,7 +76,7 @@ struct clk_si570 { struct clk_hw hw; struct regmap *regmap; unsigned int div_offset; - u64 max_freq; + const struct clk_si570_info *info; u64 fxtal; unsigned int n1; unsigned int hs_div; @@ -76,11 +86,6 @@ struct clk_si570 { }; #define to_clk_si570(_hw) container_of(_hw, struct clk_si570, hw) -enum clk_si570_variant { - si57x, - si59x -}; - /** * si570_get_divs() - Read clock dividers from HW * @data: Pointer to struct clk_si570 @@ -341,7 +346,7 @@ static int si570_set_rate(struct clk_hw *hw, unsigned long rate, struct i2c_client *client = data->i2c_client; int err; - if (rate < SI570_MIN_FREQ || rate > data->max_freq) { + if (rate < SI570_MIN_FREQ || rate > data->info->max_freq) { dev_err(&client->dev, "requested frequency %lu Hz is out of range\n", rate); return -EINVAL; @@ -392,30 +397,19 @@ static bool si570_regmap_is_writeable(struct device *dev, unsigned int reg) static const struct regmap_config si570_regmap_config = { .reg_bits = 8, .val_bits = 8, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, .max_register = 137, .writeable_reg = si570_regmap_is_writeable, .volatile_reg = si570_regmap_is_volatile, }; -static const struct i2c_device_id si570_id[] = { - { "si570", si57x }, - { "si571", si57x }, - { "si598", si59x }, - { "si599", si59x }, - { } -}; -MODULE_DEVICE_TABLE(i2c, si570_id); - static int si570_probe(struct i2c_client *client) { struct clk_si570 *data; struct clk_init_data init; - const struct i2c_device_id *id = i2c_match_id(si570_id, client); u32 initial_fout, factory_fout, stability; bool skip_recall; int err; - enum clk_si570_variant variant = id->driver_data; data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -427,7 +421,8 @@ static int si570_probe(struct i2c_client *client) data->hw.init = &init; data->i2c_client = client; - if (variant == si57x) { + data->info = i2c_get_match_data(client); + if (data->info->has_temperature_stability) { err = of_property_read_u32(client->dev.of_node, "temperature-stability", &stability); if (err) { @@ -438,10 +433,6 @@ static int si570_probe(struct i2c_client *client) /* adjust register offsets for 7ppm devices */ if (stability == 7) data->div_offset = SI570_DIV_OFFSET_7PPM; - - data->max_freq = SI570_MAX_FREQ; - } else { - data->max_freq = SI598_MAX_FREQ; } if (of_property_read_string(client->dev.of_node, "clock-output-names", @@ -496,12 +487,30 @@ static int si570_probe(struct i2c_client *client) return 0; } +static const struct clk_si570_info clk_si570_info = { + .max_freq = SI570_MAX_FREQ, + .has_temperature_stability = true, +}; + +static const struct clk_si570_info clk_si590_info = { + .max_freq = SI598_MAX_FREQ, +}; + +static const struct i2c_device_id si570_id[] = { + { "si570", (kernel_ulong_t)&clk_si570_info }, + { "si571", (kernel_ulong_t)&clk_si570_info }, + { "si598", (kernel_ulong_t)&clk_si590_info }, + { "si599", (kernel_ulong_t)&clk_si590_info }, + { } +}; +MODULE_DEVICE_TABLE(i2c, si570_id); + static const struct of_device_id clk_si570_of_match[] = { - { .compatible = "silabs,si570" }, - { .compatible = "silabs,si571" }, - { .compatible = "silabs,si598" }, - { .compatible = "silabs,si599" }, - { }, + { .compatible = "silabs,si570", .data = &clk_si570_info }, + { .compatible = "silabs,si571", .data = &clk_si570_info }, + { .compatible = "silabs,si598", .data = &clk_si590_info }, + { .compatible = "silabs,si599", .data = &clk_si590_info }, + { } }; MODULE_DEVICE_TABLE(of, clk_si570_of_match); |