From: swarren@wwwdotorg•org (Stephen Warren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 6/6] thermal: Add Tegra SOCTHERM thermal management driver
Date: Mon, 30 Jun 2014 15:23:04 -0600 [thread overview]
Message-ID: <53B1D538.6000704@wwwdotorg.org> (raw)
In-Reply-To: <1403856699-2140-7-git-send-email-mperttunen@nvidia.com>
On 06/27/2014 02:11 AM, Mikko Perttunen wrote:
> This adds support for the Tegra SOCTHERM thermal sensing and management
> system found in the Tegra124 system-on-chip. This initial driver supports
> the four thermal zones with hardware-tracked trip points.
> diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c
> +static struct tegra_tsensor t124_tsensors[] = {
> + {
> + .base = 0xc0,
> + .name = "cpu0",
> + .config = &t124_tsensor_config,
> + .calib_fuse_offset = 0x098,
> + .fuse_corr_alpha = 1135400,
> + .fuse_corr_beta = -6266900,
> + },
I wonder why some of those fields are named "fuse_xxx" when the values
are hard-coded in these tables rather than read from fuses? These values
don't seem to be used to adjust values read from fuses.
> +static int tegra_thermctl_get_temp(void *data, long *out_temp)
> + switch (zone->sensor) {
> + case 0:
> + val = readl(zone->tegra->regs + SENSOR_TEMP1)
> + >> SENSOR_TEMP1_CPU_TEMP_SHIFT;
Can't the register offset and shift be stored in *zone, so that this
whole switch can be replaced with something generic:
val = readl(zone->tegra->regs + zone->reg_offset) >> zone->value_shift;
> +static int tegra_soctherm_probe(struct platform_device *pdev)
> + irq = platform_get_irq(pdev, 0);
> + if (irq <= 0) {
> + dev_err(&pdev->dev, "can't get interrupt\n");
> + return -EINVAL;
> + }
irq is assigned once here ... (see later)
> + for (i = 0; i < 4; ++i) {
Why "4"? Should the loop count be the ARRAY_SIZE(some array)? At the
very least, a named constant that describes the value would be useful...
> + err = devm_request_threaded_irq(&pdev->dev, irq, soctherm_isr,
> + soctherm_isr_thread,
> + IRQF_SHARED, "tegra_soctherm",
> + zone);
Why request the same IRQ 4 times here. Rather, shouldn't the IRQ be
requested once, and the ISR simply loop over the status register (or
whatever there are 4 of)?
next prev parent reply other threads:[~2014-06-30 21:23 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-27 8:11 [PATCH 0/6] of-thermal hardware trip points + Tegra124 SOCTHERM driver Mikko Perttunen
2014-06-27 8:11 ` [PATCH 1/6] thermal: of: Add support for hardware-tracked trip points Mikko Perttunen
2014-06-30 21:08 ` Stephen Warren
2014-07-01 7:27 ` Mikko Perttunen
2014-07-01 18:15 ` Stephen Warren
2014-07-03 14:15 ` Mikko Perttunen
2014-07-30 14:16 ` Eduardo Valentin
2014-08-01 11:42 ` Mikko Perttunen
2014-08-01 13:15 ` edubezval at gmail.com
2014-06-27 8:11 ` [PATCH 2/6] of: Add bindings for nvidia,tegra124-soctherm Mikko Perttunen
2014-06-30 20:40 ` Stephen Warren
2014-06-27 8:11 ` [PATCH 3/6] ARM: tegra: Add thermal trip points for Jetson TK1 Mikko Perttunen
2014-06-30 20:45 ` Stephen Warren
2014-06-27 8:11 ` [PATCH 4/6] ARM: tegra: Add soctherm and thermal zones to Tegra124 device tree Mikko Perttunen
2014-06-30 20:48 ` Stephen Warren
2014-07-01 7:49 ` Mikko Perttunen
2014-07-21 23:13 ` Matthew Longnecker
2014-06-27 8:11 ` [PATCH 5/6] clk: tegra: Add soctherm and tsensor clocks to Tegra124 init table Mikko Perttunen
2014-06-27 12:18 ` Peter De Schrijver
2014-06-27 8:11 ` [PATCH 6/6] thermal: Add Tegra SOCTHERM thermal management driver Mikko Perttunen
2014-06-30 21:23 ` Stephen Warren [this message]
2014-07-01 8:06 ` Mikko Perttunen
2014-07-01 18:26 ` Stephen Warren
2014-07-03 13:51 ` Mikko Perttunen
2014-07-01 23:47 ` Tuomas Tynkkynen
2014-07-04 8:43 ` Wei Ni
2014-07-04 11:52 ` Mikko Perttunen
2014-07-21 7:42 ` [PATCH 0/6] of-thermal hardware trip points + Tegra124 SOCTHERM driver Zhang Rui
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